WO2018171451A1

WO2018171451A1 - Transmission method and device for system information

Info

Publication number: WO2018171451A1
Application number: PCT/CN2018/078640
Authority: WO
Inventors: 李赛楠; 黄煌
Original assignee: 华为技术有限公司
Priority date: 2017-03-23
Filing date: 2018-03-09
Publication date: 2018-09-27
Also published as: CN108632920B; CN108632920A

Abstract

Disclosed in the present application is a transmission method and device for system information. According to the present application, system information blocks (SIBs) having the same system information content as a target high frequency cell in cells within a given area range form one SIB group. When a terminal device performs cell handover, the terminal device receives a minimum SI message of a target network device. The minimum SI message carries an identifier of the SIB group. According to the differences and similarities between an identifier of an SIB group of a source high frequency cell and an identifier of an SIB group of the target high frequency cell, the terminal device acquires other SIBs included in an SIB group having a different identifier to that of the target high frequency cell. In this way, in high frequency networking, it is not necessary for a terminal device to acquire other SIBs of all SIB groups of a target high frequency cell, reducing signaling overheads between the terminal device and a network device.

Description

Method and device for transmitting system information

This application claims the priority of the Chinese Patent Application filed on March 23, 2017, the Chinese Patent Office, the application number is 201710178793.X, and the application name is "a method and device for transmitting system information", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting system information.

Background technique

In order to meet the large-capacity requirements of next-generation communication systems, high-frequency bands greater than 6 GHz are introduced for communication to utilize large-bandwidth, high-rate transmission. Due to the high path loss of high frequency communication, a narrow beam is needed to ensure the propagation distance and high beam gain. However, the narrow beam coverage is limited. In order to ensure communication quality, narrow beam alignment between the network device and the terminal device is required.

The System Information (SI) in the Long Term Evolution (LTE) system is organized in the form of System Information Blocks (SIBs). Each SIB aggregates a function-related parameter. The system information in LTE is transmitted periodically. The system information in the high-frequency network needs the network device to scan multiple beams and transmit the information to the terminal device to ensure coverage of the entire cell. If all system information is still sent periodically, the system information is occupied. The network has too many resources. Moreover, since the coverage of the high-frequency cell is small, the distribution of the high-frequency cell needs to be very dense to ensure coverage, and when the terminal device moves in a certain area, the switching between different high-frequency cells is very frequent, and within a certain area. The system information of each high-frequency cell is mostly the same. If the terminal device needs to re-acquire all system information every time it enters a cell, it will impose too much burden on the network.

FIG. 1 is a schematic diagram of a system information transmission scheme in a high-low frequency hybrid networking in the prior art. In FIG. 1, the macro cell (Achor cell) is a low frequency system, and there may be multiple high frequency cells (such as cell 2) and low frequency cells (such as small cell 3) in its coverage, and the macro cell may be covered by the macro cell. Other cells perform system information management: when transmitting other system information blocks (other SIBs), the macro cell carries the basic system information block (minimum SIB) of the cell in its coverage area in other SIB, and carries the corresponding minimum SIB corresponding The identifier of the cell and the validity information of the minimum SIB (such as the value tag). If the minimum SIB of the different cells is the same, the minimum SIB needs to be sent only once by the macro cell, and the other within the coverage of the macro cell. The cell only needs to broadcast the identity of the sending cell and the valid information of the minimum SI.

When the terminal device enters the coverage area of the macro cell, the terminal device first connects to the macro cell, and reads the minimum SIB of all cells in the coverage range broadcast by the macro cell, when the terminal device needs to access a macro cell coverage. If the other cell in the cell identifies the cell identity of the cell and the valid information of the minimum SIB, the corresponding minimum SIB can be obtained. When the terminal device needs to acquire the other SIB of the cell, the macro cell that can be connected can also perform scheduling transmission. Since the macro cell is a low frequency, transmitting system information does not need to perform beam scanning, thereby reducing the overhead of the high frequency small station transmitting system information for performing a large number of beam scanning.

However, when the communication system is a high-frequency independent networking, or if there are only high-frequency cells in some areas and no low-frequency macro cells, the solution cannot be implemented. Therefore, it is urgent to solve the problem of transmission of system information in a high frequency network to reduce the transmission overhead of system information.

Summary of the invention

The application provides a method and device for transmitting system information, so as to solve the problem of system information transmission in a high frequency network and reduce the transmission overhead of system information.

In one aspect, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the terminal device receives a network device corresponding to the target high frequency cell Basic system information message, wherein the basic system information message includes an identification of a system information block group of at least one other system information block and at least one basic system information block, each of the system information block groups including the target At least one cell of the frequency cell having at least one cell within the set area having the same system information content, the at least one other system information block being a system information block other than the basic system information block; The terminal device further performs at least one step of: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier of at least one system information block group of the target high frequency cell The terminal device does not need to acquire any system information block of the target high frequency cell. At least one other system information block included; if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identification portion of the at least one system information block group of the target high frequency cell, The terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request to acquire a system information block group different from the identifier of the at least one system information block group of the target high frequency cell. At least one other system information block; if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of at least one system information block group of the target high frequency cell, The terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.

In this implementation manner, the terminal device does not need to acquire other system information blocks included in all system information block groups of the target high frequency cell, thereby saving signaling overhead between the terminal device and the network device.

In another aspect, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the terminal device receives a network corresponding to the target high frequency cell a basic system information message of the device, wherein the basic system information message includes an identification of a system information block group of at least one other system information block, each of the system information block groups including the target high frequency cell in a set region At least one cell in the range has at least one other system information block of the same system information content; the terminal device further performs at least one step of: if the terminal device stores at least one system information block of the source high frequency cell The identifier of the group is the same as the identifier of the at least one system information block group of the target high frequency cell, and the terminal device does not need to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell. At least one system information block group of the source high frequency cell stored by the terminal device Identifying that the identifier portion of the at least one system information block group of the target high frequency cell is the same, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request acquisition and the target At least one system information block group of the high frequency cell identifies at least one other system information block included in the different system information block group; if the terminal device stores the identifier of the at least one system information block group of the source high frequency cell If the identifiers of the at least one system information block group of the target high-frequency cell are all different, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to acquire the target high-frequency cell. At least one other system information block included in all system information block groups.

In an implementation, the basic system information message further includes an area identifier of the target high frequency cell, and the method further includes: the terminal device further performing at least one of the following steps: if the source high frequency cell The area identifier is different from the area identifier of the target high frequency cell, and the terminal device sends the second acquisition request to the network device; if the area identifier of the source high frequency cell and the target high frequency area The area identifiers are the same, and if the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all the same, the terminal is The device does not need to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell; if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if Determining, by the terminal device, an identifier of the at least one system information block group of the source high frequency cell and at least one system letter of the target high frequency cell If the identification part of the block group is the same, the terminal device sends the first acquisition request to the network device; if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if The identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, and the terminal device sends the identifier to the network device. Sending the second acquisition request.

In this implementation manner, by setting the area identifier, the operation of comparing the identifiers of the system information block groups by the terminal device is simpler and more efficient.

In another implementation manner, the system information block group having the same system information content in the set area has the same identifier, and the system information block group having different system information contents in the set area has Different logos.

In still another aspect, a terminal device is provided, the terminal device having a function of implementing the behavior of the terminal device in the above method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation, the terminal device includes: a receiving unit, configured to receive a basic system from a network device corresponding to the target high frequency cell when the terminal device switches from the source high frequency cell to the target high frequency cell An information message, wherein the basic system information message includes an identification of a system information block group of at least one other system information block and at least one basic system information block, each of the system information block groups including the target high frequency cell Setting at least one cell within the area of the area to have at least one other system information block of the same system information content, the at least one other system information block being a system information block other than the basic system information block; Performing at least one of the following operations: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier of the at least one system information block group of the target high frequency cell, Obtaining at least one other system letter included in any one of the system information block groups of the target high frequency cell And sending, to the network device, if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell a first acquisition request, the first acquisition request for requesting acquiring at least one other system information block included in a system information block group different from an identifier of the at least one system information block group of the target high frequency cell; And transmitting, by the device, the identifier of the at least one system information block group of the source high frequency cell to the identifier of the at least one system information block group of the target high frequency cell, and sending a second acquisition request to the network device, where The second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.

In another possible implementation, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes, and the processor is configured to invoke the storage in the memory The program code is configured to: when the terminal device switches from the source high frequency cell to the target high frequency cell, control the receiver to receive a basic system information message from the network device corresponding to the target high frequency cell, where The basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each of the system information block groups including the target high frequency cell within a set area At least one cell having at least one other system information block of the same system information content, the at least one other system information block being a system information block other than the basic system information block; the processor further performing at least one of the following steps And at least one system information block group of the source high frequency cell stored by the terminal device If the identifier of the at least one system information block group of the target high frequency cell is all the same, it is not necessary to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell; And determining, by the device, that the identifier of the at least one system information block group of the source high frequency cell is the same as the identifier portion of the at least one system information block group of the target high frequency cell, and then controlling the transmitter to send the a first acquisition request, the first acquisition request is configured to request to acquire at least one other system information block included in a system information block group different from an identifier of the at least one system information block group of the target high frequency cell; And storing the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell, and controlling the transmitter to send the second to the network device Obtaining a request, where the second obtaining request is used to acquire at least one of all system information block groups of the target high frequency cell It is a system information block.

Based on the same inventive concept, the principle and the beneficial effects of the device can be referred to the method embodiments of the foregoing possible terminal devices and the beneficial effects thereof. Therefore, the implementation of the device can refer to the implementation of the method, and the repetition is not Let me repeat.

In another aspect, a method for transmitting system information is provided, the method comprising: a network device corresponding to a target high frequency cell broadcasting a basic system information message, wherein the basic system information message includes at least one other system information block system An identifier of the information block group and at least one basic system information block, each of the system information block groups including at least one other system having the same system information content as the target high frequency cell at least one cell within a set area An information block, the at least one other system information block being a system information block other than the basic system information block; the network device further performing at least one of the following steps: if the source device stores the source high frequency cell The identifier of the at least one system information block group is the same as the identification portion of the at least one system information block group of the target high frequency cell, and the network device receives the first acquisition request from the terminal device, where the first acquisition request is Requesting to acquire at least one system information block group of the source high frequency cell of the terminal device Identifying at least one other system information block included in the system information block group different from the identification portion of the at least one system information block group of the target high frequency cell, and the network device transmitting the requested identification portion to the terminal device is different At least one other system information block included in the system information block group; if the terminal device stores the identifier of the at least one system information block group of the source high frequency cell and the at least one system information block group of the target high frequency cell The network device receives a second acquisition request from the terminal device, where the second acquisition request is used to acquire at least one other system information included in all system information block groups of the target high frequency cell. Blocking, and the network device transmitting, to the terminal device, at least one other system information block included in all system information block groups of the target high frequency cell.

In this implementation manner, the terminal device does not need to acquire other system information blocks included in all system information block groups of the target high frequency cell, thereby saving signaling overhead between the network device and the terminal device.

In an implementation, the basic system information message further includes an area identifier of the target high frequency cell, and the method further includes: the network device further performing at least one of the following steps: if the source high frequency cell The area identifier is different from the area identifier of the target high frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends the target high frequency cell to the terminal device At least one other system information block included in the system information block group; if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the source device stores the source high frequency cell The identifier of the at least one system information block group is the same as the identification portion of the at least one system information block group of the target high frequency cell, and the network device receives the first acquisition request from the terminal device, and the Transmitting, by the network device, the at least one other system information included in the system information block group different in the requested identification part to the terminal device If the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the terminal device stores the identifier of the at least one system information block group of the source high frequency cell and the The identifiers of the at least one system information block group of the target high frequency cell are all different, the network device receives the second acquisition request from the terminal device, and the network device sends the target high to the terminal device At least one other system information block included in all system information block groups of the frequency cell.

In another implementation manner, the system information block group sent by the network device to the terminal device further includes an identifier of the system information block group.

In this implementation, the terminal device stores at least one other system information block included in the system information block group of the target high frequency cell according to the identifier of the system information block group, so that the terminal device switches to the target high frequency cell or the target high frequency. When the cell has the same system information block group, the terminal device does not need to repeatedly acquire at least one other system information block included in the system information block group.

In still another implementation, the method further includes: if the at least one other system information block included in any system information block group of any cell adjacent to the target high frequency cell generates an update, the network device Receiving, by the network backhaul transmission, an identifier of the updated at least one system information block group that generates another system information block update; the network device identifying and identifying at least one other system information block group of the target high frequency cell Comparing the identifiers of the updated at least one system information block group of the adjacent cells, obtaining identifiers of at least one system information block group having the same identifier, and broadcasting at least one of the same identifiers in the basic system information message The identifier of the system information block group.

In this implementation, the network device can obtain more updated identifiers of the system information block groups of the cells in the set area by the backhaul update between the network devices.

In still another aspect, a network device is provided, the network device having a function of implementing network device behavior in the above method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation manner, the network device includes: a sending unit, configured to broadcast a basic system information message, where the basic system information message includes an identifier of the system information block group of at least one other system information block, and at least one a basic system information block, each of the system information block groups including at least one other system information block having the same system information content as the at least one cell of the target high frequency cell within the set area, the at least one other system information The block is a system information block other than the basic system information block; the receiving unit is configured to: if the terminal device stores the identifier of the at least one system information block group of the source high frequency cell and the target high frequency cell Receiving a first acquisition request from the terminal device, where the first acquisition request is used to request acquisition of at least one system information block group of the source high frequency cell of the terminal device Identifying system information different from the identification portion of the at least one system information block group of the target high frequency cell At least one other system information block included in the block group, and the transmitting unit is configured to send, to the terminal device, at least one other system information block included in the system identification block group different in the requested identification portion; and/or the receiving The unit is further configured to: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, receive the a second acquisition request of the terminal device, the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the sending unit is further configured to use the terminal The device transmits at least one other system information block included in all system information block groups of the target high frequency cell.

In another possible implementation, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes, and the processor is configured to invoke the storage in the memory Program code for controlling the transmitter to broadcast a basic system information message, wherein the basic system information message includes an identification of a system information block group of at least one other system information block and at least one basic system information block, each The system information block group includes at least one other system information block having the same system information content as the target high frequency cell at least one cell within a set area, the at least one other system information block being a system information block outside the basic system information block; the processor further performing at least one of the steps of: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is higher than the target Controlling the receiver by controlling the same portion of the at least one system information block group of the frequency cell a first acquisition request from the terminal device, where the first acquisition request is used to request to acquire an identifier of at least one system information block group of the source high frequency cell of the terminal device and at least one system information block of the target high frequency cell At least one other system information block included in the system identification block group different in the identification portion of the group, and at least one other system information block included in the system information block group that controls the transmitter to transmit the requested identification portion to the terminal device And if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of at least one system information block group of the target high frequency cell, controlling the receiver to receive from a second acquisition request of the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and control the transmitter to the terminal The device transmits at least one other system information block included in all system information block groups of the target high frequency cell.

Based on the same inventive concept, the principle and the beneficial effects of the device can be referred to the method embodiments of the foregoing possible network devices and the beneficial effects thereof. Therefore, the implementation of the device can refer to the implementation of the method, and the repetition is not Let me repeat.

In still another aspect, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the terminal device receives a corresponding high frequency cell corresponding to the target a basic system information message of the network device, wherein the basic system information message includes at least one basic system information block and an identification of at least one system information block group of the basic system information block, each of the system information block groups including The target high frequency cell has at least one basic system information block of the same system information content in at least one cell in the set area; the terminal device further performs at least one of the following steps: if the terminal device stores the The identifier of the system information block group of at least one of the basic system information blocks of the source high frequency cell is the same as the identifier of the system information block group of at least one of the basic system information blocks of the target high frequency cell, and the terminal is The device stops acquiring the basic system information message; if the source device stores the source high frequency small The identifier of the system information block group of at least one of the basic system information blocks is the same as the identification portion of the system information block group of the at least one of the basic system information blocks of the target high frequency cell, and the terminal device acquires the At least one system information of a system information block group of at least one of the basic system information blocks of the source high frequency cell and at least one system information different from an identification of a system information block group of at least one of the basic system information blocks of the target high frequency cell The block group includes at least one basic system information block.

In this implementation manner, the terminal device determines, according to the difference between the identifier of the system information block group of the source high frequency cell and the identifier of the system information block group of the target high frequency cell, whether the terminal device continues to acquire the basic system message or the different part of the interception identifier. The system information block group includes basic system information blocks, so that in the high frequency networking, the terminal device does not need to always acquire all the basic system information blocks included in the basic system information message, thereby improving the endurance capability of the terminal device.

As an alternative implementation, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the terminal device receives a high frequency from the target a basic system information message of the network device corresponding to the cell, where the basic system information message includes an identifier of at least one system information block group of the basic system information block, each of the system information block groups including the target The frequency cell has at least one basic system information block of the same system information content in at least one cell in the set area; the terminal device further performs at least one of the following steps: if the source device stores the source high frequency cell The identifier of the system information block group of at least one of the basic system information blocks is the same as the identifier of the system information block group of at least one of the basic system information blocks of the target high frequency cell, and the terminal device stops acquiring a basic system information message; if at least one of the source high frequency cells stored by the terminal device The identifier of the system information block group of the basic system information block is the same as the identification part of the system information block group of the at least one basic system information block of the target high frequency cell, and the terminal device acquires the source high frequency cell The at least one system information block group of the at least one of the basic system information blocks is identified by at least one system information block group different from the identification of the system information block group of the at least one of the basic system information blocks of the target high frequency cell. At least one basic system information block.

In a possible implementation, the terminal device includes: a receiving unit, configured to receive a basic system from a network device corresponding to the target high frequency cell when the terminal device switches from the source high frequency cell to the target high frequency cell An information message, wherein the basic system information message includes an identification of at least one basic system information block and at least one system information block group of the basic system information block, each of the system information block groups including the target high frequency At least one cell in the set area has at least one basic system information block of the same system information content; the sending unit is configured to perform at least one operation: if the source device stores the source high frequency cell Stopping acquiring the basic system information message when the identifier of the system information block group of the at least one basic system information block is the same as the identifier of the system information block group of the at least one basic system information block of the target high frequency cell. At least one of the basic system information blocks of the source high frequency cell stored by the terminal device; Obtaining, by the identifier of the system information block group, the identification part of the system information block group of the at least one basic system information block of the target high frequency cell, acquiring at least one of the basic system information blocks of the source high frequency cell And identifying, by the system information block group, at least one basic system information block included in at least one system information block group different from the identification of the system information block group of the at least one of the basic system information blocks of the target high frequency cell.

In another possible implementation, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes, and the processor is configured to invoke the storage in the memory The program code is configured to: when the terminal device switches from the source high frequency cell to the target high frequency cell, control the receiver to receive a basic system information message from the network device corresponding to the target high frequency cell, where The basic system information message includes at least one basic system information block and an identifier of at least one system information block group of the basic system information block, each of the system information block groups including the target high frequency cell in a set region range At least one cell within the at least one basic system information block having the same system information content; the processor further performing at least one of the steps of: if the terminal device stores at least one of the base systems of the source high frequency cell An identifier of a system information block group of the information block and at least one of the basics of the target high frequency cell If the identifiers of the system information block groups of the system information block are all the same, the receiver is controlled to stop acquiring the basic system information message; if the terminal device stores at least one of the basic system information blocks of the source high frequency cell And the identifier of the system information block group is the same as the identifier portion of the system information block group of the at least one of the basic system information blocks of the target high frequency cell, and then the receiver is controlled to acquire at least one of the source high frequency cells. At least one basic system included in the at least one system information block group of the system information block group of the basic system information block and the identification of the system information block group of the at least one of the basic system information blocks of the target high frequency cell Information block.

In still another aspect, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the terminal device targets the target high frequency cell The network device sends an acquisition request of the system information of the target high frequency cell, where the acquisition request includes an identifier of the source high frequency cell, and the target high frequency cell stores a location corresponding to the identifier of the source high frequency cell Determining at least one system information block of the source high frequency cell; the terminal device receiving a response message from the target network device; wherein, if at least one system information block of the target high frequency cell and the source high frequency cell The at least one system information block is used to indicate that at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell; At least one system information block of the cell is identical to at least one system information block portion of the source high frequency cell, and the response message includes At least one system information block of the high frequency cell is different from at least one system information block of the target high frequency cell; if at least one system information block of the target high frequency cell is different from at least one system information block of the source high frequency cell And the response message includes all system information blocks of the target high frequency cell.

In this implementation, the system information block of the neighboring cell is stored in each cell, and when the target network device receives the acquisition request of the system information block of the terminal device that performs the handover, the system information block of the target high frequency cell is compared with The similarities and differences of the system information blocks of the source high frequency cell can reduce the repeated transmission of the system information block and save the signaling overhead between the network device and the terminal device.

In an implementation manner, the obtaining request further includes valid information of a system information block of the source high frequency cell, and the effective information of the system information block of the source high frequency cell is used to identify the system of the source high frequency cell The version of the information block.

In this implementation manner, one system information block may have multiple versions, and system information contents of different versions of system information blocks are different.

In a possible implementation, the terminal device includes: a sending unit, configured to send a target high to a target network device corresponding to the target high frequency cell when the terminal device switches from the source high frequency cell to the target high frequency cell a request for obtaining system information of a frequency cell, wherein the acquisition request includes an identifier of the source high frequency cell, and the source high frequency cell stores the source high frequency cell corresponding to the identifier of the source high frequency cell At least one system information block; a receiving unit, configured to receive a response message from the target network device; wherein, if at least one system information block of the target high frequency cell and at least one system information of the source high frequency cell If the blocks are all the same, the response message is used to indicate that at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell; if at least one of the target high frequency cells The system information block is identical to the at least one system information block portion of the source high frequency cell, and the response message includes the source high frequency cell Having at least one system information block of a different target high frequency cell of the system information block; if at least one system information block of the target high frequency cell is different from at least one system information block of the source high frequency cell, The response message includes all system information blocks of the target high frequency cell.

In another possible implementation, the terminal device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes, and the processor is configured to invoke the storage in the memory The program code is configured to: when the terminal device switches from the source high frequency cell to the target high frequency cell, control the transmitter to send system information of the target high frequency cell to the target network device corresponding to the target high frequency cell Obtaining a request, wherein the obtaining request includes an identifier of the source high frequency cell, and the target high frequency cell stores at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell Controlling, by the receiver, a response message from the target network device; wherein, if at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell, The response message is used to indicate at least one system information block of the target high frequency cell and at least one system information of the source high frequency cell All of the same; if the at least one system information block of the target high frequency cell is identical to the at least one system information block portion of the source high frequency cell, the response message includes at least one system information with the source high frequency cell Blocking at least one system information block of the target high frequency cell; if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes All system information blocks of the target high frequency cell.

In still another aspect, a method for transmitting system information is provided, the method comprising: when a terminal device switches from a source high frequency cell to a target high frequency cell, the target network device corresponding to the target high frequency cell receives the source network An acquisition request of a system information block of a target high frequency cell of the terminal device, where the acquisition request includes an identifier of the source high frequency cell; and the target network device searches for a stored identifier corresponding to the source high frequency cell At least one system information block of the source high frequency cell; the target network device sends a response message to the terminal device, where if at least one system information block of the target high frequency cell and the source high frequency cell The at least one system information block is used to indicate that at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell; The at least one system information block of the frequency cell is identical to the at least one system information block portion of the source high frequency cell, and the response message includes At least one system information block of the target high frequency cell different from the at least one system information block of the source high frequency cell; at least one system information block of the target high frequency cell and at least one system of the source high frequency cell The information blocks are all different, and the response message includes all system information blocks of the target high frequency cell.

In an implementation, the obtaining request further includes valid information of a system information block of the source high frequency cell, and valid information of the system information block of the source high frequency cell is used to identify all the source high frequency cells. a version of the system information block; the method further comprising: the target network device searching for the stored source high frequency corresponding to the identifier of the source high frequency cell and the effective information of the system information block of the source high frequency cell At least one system information block of the cell, wherein the target high frequency cell stores at least one version of the system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell.

In another implementation, the method further includes: if the system information block of any cell adjacent to the target high frequency cell generates an update, the target network device receives and stores the system information block update generated. And transmitting, by the cell, the updated at least one system information block, where the at least one system information block includes an identifier of the cell that generates the system information block update, and/or valid information of the at least one system information block.

In this implementation, the network device can obtain more updated system information block groups of the cell through the backhaul update between the network devices.

In another implementation manner, the terminal device sends a request for acquiring a system information block of the target high frequency cell to the target network device corresponding to the target high frequency cell, including: the terminal device adopts a physical random access channel (PRACH) The dedicated preamble sequence or the PRACH dedicated resource sends a first random access message to the target network device, where the dedicated preamble sequence of the PRACH or the PRACH dedicated resource is used to indicate that the target network device sends the information to the terminal device. At least one system information block of the target high frequency cell, the first random access message includes an identifier of the source high frequency cell, and/or valid information of a system information block of the source high frequency cell; Receiving, by the terminal device, a response message from the target network device, comprising: the terminal device receiving a second random access message from the target network device, where the second random access message includes a preamble identifier and the response Message.

In another implementation manner, the terminal device sends a request for acquiring a system information block of the target high frequency cell to the target network device corresponding to the target high frequency cell, where the terminal device sends the target device to the target network device. a third random access message, where the third random access message is used to instruct the target network device to deliver at least one system information block of the target high frequency cell to the terminal device, where the third random access message The access message includes an identifier of the source high frequency cell, and/or valid information of a system information block of the source high frequency cell, where the third random access message is on the physical uplink shared channel PUSCH of the terminal device. The first uplink transmission of the scheduling; the receiving, by the terminal device, the response message from the target network device, comprising: the terminal device receiving a fourth random access message from the target network device, where the fourth random The access message is a random access contention resolution message, and the fourth random access message includes the response message.

In another implementation manner, the terminal device sends a request for acquiring a system information block of the target high frequency cell to the target network device corresponding to the target high frequency cell, where the terminal device sends the target device to the target network device. An unauthorised transmission message, wherein the non-authorized transmission message is used to instruct the target network device to deliver at least one system information block of the target high frequency cell to the terminal device, where the unauthorized transmission message includes the The identifier of the source high frequency cell and/or the effective information of the system information block of the source high frequency cell.

In a possible implementation, the network device includes: a receiving unit, configured to receive a system information block of a target high frequency cell from the terminal device when the terminal device switches from the source high frequency cell to the target high frequency cell The obtaining request, wherein the obtaining request includes an identifier of the source high frequency cell, and the sending unit is configured to search for the stored at least one system information of the source high frequency cell corresponding to the identifier of the source high frequency cell a sending unit, configured to send a response message to the terminal device, where, if at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell, The response message is used to indicate that at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell; if at least one system information block of the target high frequency cell and the source The at least one system information block portion of the high frequency cell is identical, and the response message includes different from the at least one system information block of the source high frequency cell At least one system information block of the target high frequency cell; if at least one system information block of the target high frequency cell is different from at least one system information block of the source high frequency cell, the response message includes the target high All system information blocks of the frequency cell.

In another possible implementation, the network device includes: a receiver, a transmitter, a memory, and a processor; wherein the memory stores a set of program codes, and the processor is configured to invoke the storage in the memory The program code is configured to: when the terminal device switches from the source high frequency cell to the target high frequency cell, control the receiver to receive an acquisition request of the system information block of the target high frequency cell from the terminal device, where The obtaining request includes an identifier of the source high frequency cell; searching for at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell; and controlling the transmitter to the terminal The device sends a response message, where the response message is used to indicate the target high frequency cell, if at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell. At least one system information block is identical to at least one system information block of the source high frequency cell; if at least one of the target high frequency cells The system information block is identical to the at least one system information block portion of the source high frequency cell, and the response message includes at least one system information of the target high frequency cell different from the at least one system information block of the source high frequency cell And if the at least one system information block of the target high frequency cell is different from the at least one system information block of the source high frequency cell, the response message includes all system information blocks of the target high frequency cell.

Yet another aspect of the present application provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the methods described in the above aspects.

Yet another aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background art, the drawings to be used in the embodiments of the present invention or the background art will be described below.

1 is a schematic diagram of a system information transmission scheme in a high-low frequency hybrid networking in the prior art;

2 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of interaction of a method for transmitting system information in a high frequency network according to an embodiment of the present invention;

4 is a schematic diagram of a high frequency cell area distribution according to an example of an embodiment of the present invention;

FIG. 5 is a schematic diagram of interaction of another method for transmitting system information in a high frequency network according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of interaction of another method for transmitting system information in a high frequency network according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of interaction of another method for transmitting system information in a high frequency network according to an embodiment of the present invention;

8 is a schematic diagram of interaction of acquiring a system information block when a terminal device in a connected state switches a cell;

FIG. 9 is a schematic diagram of a module of a terminal device according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a module of a network device according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of still another module of a terminal device according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of another network device according to an embodiment of the present disclosure;

FIG. 14 is a hardware architecture diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 15 is a hardware architecture diagram of a network device according to an embodiment of the present disclosure;

FIG. 16 is a hardware architecture diagram of another terminal device according to an embodiment of the present disclosure;

FIG. 17 is a hardware architecture diagram of still another terminal device according to an embodiment of the present disclosure;

FIG. 18 is a hardware architecture diagram of another network device according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

A communication system according to an embodiment of the present invention includes a network device and a terminal device. The communication system may be a Global System for Mobile Communication (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, or a global system. Worldwide Interoperability for Microwave Access (WiMAX) system, Long Term Evolution (LTE) system, 5G communication system (such as new radio (NR) system, communication system with multiple communication technologies ( For example, a communication system in which LTE technology and NR technology are integrated, or a subsequent evolved communication system.

The terminal device in the present application is a device having a wireless communication function, and may be a handheld device having a wireless communication function, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem. Terminal devices in different networks may be called different names, such as: User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user. Terminal, terminal, wireless communication device, user agent or user device, cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, personal digital processing (Personal Digital Assistant, PDA), 5G network or terminal equipment in a future evolution network.

The network device in the present application is a device deployed in a radio access network to provide wireless communication functions, including but not limited to: a base station (for example, a BTS (Base Transceiver Station, BTS), a Node B (NodeB, NB), Evolved Node B (eNB or eNodeB), a transmission node or a transmission reception point (TRP or TP) in the NR system, or a generation node B (gNB), a base station in a future communication network Or network equipment), relay stations, access points, in-vehicle devices, wearable devices, Wireless-Fidelity (Wi-Fi) sites, wireless backhaul nodes, small stations, micro stations, and so on.

FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention. Specifically, taking the network device as a base station as an example, in FIG. 2, the base station 102 may include multiple antenna groups. Each antenna group may include one or more antennas, for example, one antenna group may include

antennas

104 and 106, another antenna group may include

antennas

108 and 110, and may additionally include additional groups, and additional groups may include

antennas

112 and 114 . Different antenna groups in high frequency communication can be combined into different antenna panels. For example, one antenna group forms one beam, pointing in one direction, and the other antenna group forms another beam, pointing in the other direction, and With different device capabilities, more antennas may be needed. Therefore, depending on the device capabilities, additional groups can be set with different antenna numbers. Illustratively, 2 antennas are shown in Figure 2 for each antenna group, although more or fewer antennas may be used for each group. Base station 102 can additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which can include various components associated with signal transmission and reception, such as processors, modulators, multiplexers, demodulation , demultiplexer or antenna.

Base station 102 can communicate with one or more terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that base station 102 can communicate with any number of terminal devices similar to

terminal device

116 or 122. As shown in FIG. 2, terminal device 116 is in communication with

antennas

112 and 114, wherein

antennas

112 and 114 transmit information to terminal device 116 over forward link 118 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, wherein

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126. In a Frequency Division Duplex (FDD) system, for example, the forward link 118 can utilize a different frequency band than that used by the reverse link 120, and the forward link 124 can utilize the reverse link 126. Different frequency bands used. Moreover, in a Time Division Duplex (TDD) system, the forward link 118 and the reverse link 120 can use a common frequency band, and the forward link 124 and the reverse link 126 can use a common frequency band.

The area covered by each set of antennas designed for communication and/or the area covered by the transmission is referred to as the sector of base station 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the coverage area of base station 102. During base station 102 communication with

terminal devices

116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of base station 102 may utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. In addition, when the base station 102 uses beamforming to transmit signals to the randomly dispersed

terminal devices

116 and 122 in the relevant coverage area, the base station 102 uses the beamforming to transmit signals to all of its access terminal devices. Mobile nodes are subject to less interference.

At a given time, base station 102, terminal device 116 or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode the data for transmission. Specifically, the wireless communication transmitting device can acquire, for example, generate, receive from another communication device, or save in a memory, etc., a certain number of data bits to be transmitted to the wireless communication receiving device through the channel. Such data bits may be included in a transport block or a plurality of transport blocks of data, and the transport blocks may be segmented to produce a plurality of code blocks.

The embodiment of the invention provides a method and a device for transmitting system information, which are formed into a system information block group by using other system information blocks having the same system information content as the target high frequency cell in the set region range, and the terminal device When performing cell handover, the terminal device receives a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device identifies the target high-frequency cell according to the identifier of the system information block group of the source high-frequency cell. The difference between the identifiers of the system information block groups, and other system information blocks included in the system information block group different from the identifiers of the system information block groups of the target high frequency cell, so that the terminal device does not need to acquire the target high frequency in the high frequency networking The other system information blocks included in all the system information block groups of the cell save the signaling overhead between the terminal device and the network device.

FIG. 3 is a schematic diagram of interaction of a method for transmitting system information according to an embodiment of the present invention. The method may include the following steps:

S101. The network device corresponding to the target high frequency cell broadcasts a basic system information message.

The SIB mainly includes (1) Master Information Block (MIB): basic parameters required for the terminal device to initially access the network; (2) SIB1: parameters related to cell access and cell selection, and time domain scheduling information of other SIBs (3) SIB2: public radio resource configuration information; (4) SIB3 to SIB8: parameters used to control intra-frequency, inter-frequency and inter-RAT cell reselection; (5) SIB9: home base station name; (6) SIB10~SIB12: earthquake tsunami warning message; etc. Of course, this embodiment does not limit the number of SIBs and the function of each SIB, and may have corresponding definitions according to the corresponding communication system. In this embodiment, the system information block is divided into a basic system information block (for example, minimum SIB) and other system information blocks (for example, other SIB), wherein the SI is organized in the form of SIB, that is, the minimum SIB is minimum. SIB in SI, other SIB is SIB in other SI. The basic system information block may include MIB, SIB1, and SIB2, but does not define system information blocks included in the basic system information block. Other system information blocks are system information blocks in addition to the basic system information blocks. The basic system information block is system information sent by periodic broadcast.

The application scenario of this embodiment is a high frequency networking scenario. FIG. 4 is a schematic diagram of a high frequency cell area distribution according to an example of an embodiment of the present invention. As shown in FIG. 4, for a high-frequency network partitioning area, a cell in a set of the same set area of most other system information block contents is divided into one area, for example, area 1 includes cell1, cell2, and cell3, wherein Each cell includes one or more network devices, and most of the other system information blocks of the three cells are the same. Similarly, the area 2 includes cell4 and cell5, and most of the other system information blocks are the same (in actual situations) The number of cells included in a zone can be more). The set area range refers to a custom area of a circle formed by a set distance as a radius, or an adjacent area, or a tracking area (TA: tracking area). If the setting area is TA, the area identifier broadcasted in the minimum SIB is TAC (tracking area code).

For example, the area 1 includes the cell 1, the cell 2, and the cell 3, wherein the SIB X (X is a positive integer) and the SIB (X+1) in the other SIB of the cell 1 can be used for the cell 2, that is, the SIB X and the SIB in the other SIB of the cell 2 ( X+1) may be the same as the system information content of the current SIB X and SIB (X+1) in cell1, and then use SIB X and SIB (X+1) as a system information block group (other SIB group) is identified (other SIB group id). If multiple cells in the area may have multiple identical other SIBs at the same time, the multiple other SIBs may be used as one system information block group. The system information block groups having the same system information content in the set area have the same identifier, and the system information block groups having different system information contents in the set area have different identifiers. It should be noted that, in this embodiment, cells that are relatively close in different areas (such as cells in adjacent areas, cells in different areas but within a certain range, and cells with a certain number of cells in different areas) The other SIB group ids of the other SIB group ids cannot be duplicated, that is, the same other SIB group ids correspond to the same SIB content; the other SIB group ids of the cells in different areas beyond the above distance can be repeated, that is, the same other SIB group id can be Corresponding to different SIB content. The other SIB in the other SIB group may also include the version information of the other SIB. For the same other SIB, the system information content may be different for the same version, and the corresponding other SIB group id is also different. The identifiers of other SIB groups in an area can be as shown in Table 1. It can be seen that each identified other SIB group can be used by at least two cells in the area. Each network device in the area needs to know the available other SIB group of each cell in the coverage of the network device and its corresponding other SIB group id. It should be noted that the division of the area and the mapping relationship between the other SIB group id and the other SIB group and their versions in each area may be predefined by the protocol, and may be fixed or dynamically updated.

Optionally, the other SIBs of each cell in a set area may be identified, and only the other SIBs in the cell that can be used for other cells in the area may be identified, and the identifier may be 1, 2, ..., M (M It is a positive integer), and it can also be other identification methods.

Further, this embodiment is specifically a scenario in which the terminal device switches from the source high frequency cell to the target high frequency cell. The network device corresponding to the target high-frequency cell broadcasts the basic system information message, and the target high-frequency cell and the source high-frequency cell are generally in the set area, and the terminal device can receive the basic system information message from the network device corresponding to the target high-frequency cell. . The basic system information message includes an identifier of the other SIB group (other SIB group id) of at least one other system information block (other SIB) and at least one basic system information block (minimum SIB). The system information block group includes at least one other system information block having the same system information content as the target high frequency cell at least one cell within a set area, the at least one other system information block being A system information block outside the basic system information block. The terminal device may store an identifier of a system information block group of the target high frequency cell.

As an alternative to S101, the basic system information message may also include only the identification of the system information block group of at least one other system information block, and does not include at least one basic system information block.

Table 1 Example of other SIB group id list in a region

The terminal device further performs at least one of the following S102 to S102":

S102. If the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is the same as the identifier of the at least one system information block group of the target high frequency cell, the terminal device does not need to acquire. At least one other system information block included in any one of the system information block groups of the target high frequency cell;

S102', if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, the terminal device The network device sends a first acquisition request, where the first acquisition request is used to request to acquire at least one other system information block included in a system information block group different from an identifier of at least one system information block group of the target high frequency cell. ;

S102", if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of at least one system information block group of the target high frequency cell, the terminal device is The network device sends a second acquisition request, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.

When the terminal device wants to switch to the target high frequency cell, first compare the identifier of the system information block group of the source high frequency cell with the identifier of the system information block group of the target high frequency cell, and if the comparison result is the system information of the source high frequency cell The identifier of the block group is the same as the identifier of the system information block group of the target high frequency cell. When the terminal device switches to the target high frequency cell, it is not necessary to acquire the other SIB included in any system information block group of the target high frequency cell, which greatly saves The signaling overhead between the terminal device and the network device greatly reduces the transmission of the duplicate other SIB; if the comparison result is the identifier of the system information block group of the source high frequency cell and the system information block group of the target high frequency cell If the identification part is the same, the terminal device only needs to obtain the other SIB included in the system information block group whose identifier of the system information block group of the source high frequency cell is different from the identifier of the system information block group of the target high frequency cell, and can also save to some extent. The signaling overhead between the terminal device and the network device reduces the transmission of repeated other SIB to a certain extent; if the result of the comparison is The identifier of the system information block group of the source high frequency cell is different from the identifier of the system information block group of the target high frequency cell. At this time, the terminal device needs to acquire the other SIB included in all the system information block groups of the target high frequency cell.

The network device further performs at least one of the following S103 to S103':

S103. If the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, the network device receives the a first acquisition request of the terminal device, where the first acquisition request is used to request to acquire an identifier of at least one system information block group of the source high frequency cell of the terminal device and at least one system information block group of the target high frequency cell Identifying at least one other system information block included in the different system information block groups, and the network device transmitting, to the terminal device, at least one other system information block included in the system identification block group different in the requested identification portion;

S103', if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of at least one system information block group of the target high frequency cell, the network device receives a second acquisition request from the terminal device, the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the network device is to the terminal The device transmits at least one other system information block included in all system information block groups of the target high frequency cell.

Correspondingly, when receiving the different acquisition request of the terminal device, the network device sends the other SIB included in the system information block group requested by the acquisition request to the terminal device according to the indication of the acquisition request. In particular, as in S103, the first acquisition request only requests to obtain the other SIB included in the system information block group whose identifier of the system information block group of the source high frequency cell is different from the identifier of the system information block group of the target high frequency cell, which saves to a certain extent. The signaling overhead between the network device and the terminal device.

Optionally, the network device may further carry the identifier of the system information block group when the other SIBs included in the system information block group requested by the acquisition request are sent to the terminal device, so that the terminal device stores the target high according to the identifier of the system information block group. The system information block group of the frequency cell includes the other SIB, so that when the terminal device switches to the target high frequency cell or the cell having the same system information block group as the target high frequency cell, the terminal device does not need to repeatedly acquire the system information block group including Other SIB. It should be noted that the system information block requested by the terminal device should be the system information block that the terminal device needs to obtain. The at least one other SIB corresponding to the other SIB group id broadcasted by the network device may also be the other SIB that the terminal device needs to obtain. (Because the protocol defines which other SIBs the terminal device must acquire, while other other SIB terminal devices may not acquire it).

According to an embodiment of the present invention, a system information transmission method is configured to form a system information block group with other system information blocks of a target high frequency cell having the same system information content in a cell in a set area, and the terminal device performs a cell. When switching, the terminal device receives a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device according to the identifier of the system information block group of the source high frequency cell and the system information of the target high frequency cell The difference between the identifiers of the block groups, and other system information blocks included in the system information block group different from the identifiers of the system information block groups of the target high frequency cell, so that in the high frequency networking, the terminal device does not need to acquire the target high frequency cell. All other system information blocks included in the system information block group save the signaling overhead between the terminal device and the network device.

FIG. 5 is a schematic diagram of interaction of another method for transmitting system information according to an embodiment of the present invention. The method may include the following steps:

S201. If another system information block included in any system information block group of any cell adjacent to the target high frequency cell generates an update, the network device of the target high frequency cell receives the cell that generates another system information block update. The identifier of the updated at least one system information block group transmitted back.

If the area of the set range is large or the number of cells included in the area is large (many cells in the area are not adjacent), each cell in the area may carry the neighboring cell currently included in the cell only in the broadcast minimum SIB. The same SIB group id of the other SIB group is identified, which requires that each neighboring cell in the area shares the other SIB group id of the other SIB group that is currently included, that is, the network device of each cell in the area. The other SIB group id of the identified other SIB group currently included in the neighboring cell is stored.

When the identified other SIB group included in the cell is updated, the updated other SIB group id of the neighboring network device in the notification area is transmitted through the backhual between the network devices, or through the central network controller or other network. The device notifies the neighboring network device of the updated other SIB group id.

S202. The network device compares an identifier of the at least one other system information block group of the target high frequency cell with an identifier of the updated at least one system information block group of the neighboring cell, to obtain at least the same identifier. An identifier of a system information block group and broadcasting an identifier of the at least one system information block group having the same identity in a basic system information message.

The network device corresponding to each cell in the area knows the other SIB group id of the other SIB group that is currently included in the neighboring cell, and compares it with the other SIB group id of the identified other SIB group that is currently included in the cell. The broadcast has the same other SIB group id of the other SIB group as the neighboring cell.

At the same time, in this manner, when the content of the other SIB group in a cell is updated, the other SI id carried in the neighboring multiple cells in the broadcast of the minimum SIB may be changed, thereby triggering system information of multiple cells. The block update process (paging notifies the change of the terminal device system message in the TA area). To avoid this situation, when the other SI id carried in the cell only when the minimum SIB is broadcast is changed without other system information content changes, the system information update process may not be triggered. It should be noted that steps S201 to S203 may also be optional steps, and the target network device may acquire the update of the identifier of the system information block group of other cells in other manners.

This embodiment is specifically a scenario in which a terminal device switches from a source high frequency cell to a target high frequency cell. The network device corresponding to the target high frequency cell broadcasts the basic system information message, and the terminal device can receive the basic system information message from the network device corresponding to the target high frequency cell. The basic system information message includes an identifier of the other SIB group (other SIB group id) of at least one other system information block (other SIB) and at least one basic system information block (minimum SIB). The system information block group includes at least one other system information block having the same system information content as the target high frequency cell at least one cell within a set area, the at least one other system information block being A system information block outside the basic system information block. The terminal device may store an identifier of a system information block group of the target high frequency cell.

The terminal device further performs at least one of the following S203 to S203"':

S203. If the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and the identifier of the at least one system information block group of the source high frequency cell and the target stored by the terminal device If the identifiers of the at least one system information block group of the high frequency cell are all the same, the terminal device does not need to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell;

S203. If the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the terminal device sends a second acquisition request to the network device, where the second acquisition request is used to obtain At least one other system information block included in all system information block groups of the target high frequency cell;

S203", if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the terminal device stores the identifier and location of at least one system information block group of the source high frequency cell If the identification part of the at least one system information block group of the target high frequency cell is the same, the terminal device sends a first acquisition request to the network device, where the first acquisition request is used to request to acquire the target high frequency cell. At least one system information block group identifying at least one other system information block included in a different system information block group;

S203"', if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the terminal device stores the identifier of at least one system information block group of the source high frequency cell The identifiers of the at least one system information block group of the target high frequency cell are all different, and the terminal device sends the second acquisition request to the network device.

The main difference between the embodiment and the embodiment shown in FIG. 3 is that, in this embodiment, the basic system information message further includes an area identifier of the target high frequency cell. As shown in Figure 4, the area within each setting range is numbered (system information area id), the number can be 1, 2, ..., N (N is a positive integer), and the same system is set within the range. The system information block group of the information content has the same identifier, and the system information block group having different system information contents within the set area has different identifiers. Optionally, the system information area id of each cell in an area is the same, and the system information area id of the adjacent area (or a relatively close area) is different. Optionally, the area identifier beyond the range of the set area may be repeated. Since the contents of other system information blocks broadcast by the cells in the set area range are mostly the same, on the contrary, the contents of other system information blocks of the cells in different area areas are generally different, and therefore, the terminal equipment compares the source high frequency cells with Before the identification of the system information block group of the target high frequency cell, first compare whether the area identifiers of the source high frequency cell and the target high frequency cell are the same. If the comparison result is different, there is no need to further compare the source high frequency cell with the target high frequency cell. Whether the identifiers of the system information block groups are the same, the terminal device needs to acquire the other SIBs included in all the system information block groups of the target high frequency cell from the network device; if the comparison result is the same, according to the source high frequency cells and the target high frequency cells Whether the identifiers of the system information block groups are all the same, partially the same, or all of the same, and the corresponding processing is performed, and the processing procedure is the same as that of S102 to S102 in the embodiment shown in FIG. 3, and details are not described herein again.

The network device further performs at least one of the following S204 to S204":

S204. If the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the network device receives a second acquisition request from the terminal device, where the second acquisition request is used to obtain the location. At least one other system information block included in all system information block groups of the target high frequency cell, and the network device transmitting, to the terminal device, at least one other system information included in all system information block groups of the target high frequency cell Piece;

S204', if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the terminal device stores the identifier and location of at least one system information block group of the source high frequency cell And the terminal device sends the first acquiring request to the network device, where the first acquiring request is used to request to acquire the terminal device. At least one other system information block included in the system information block group different from the identification portion of the at least one system information block group of the target high frequency cell, and the network device Transmitting, to the terminal device, at least one other system information block included in the system information block group different in the requested identification portion;

S204", if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the terminal device stores the identifier and location of at least one system information block group of the source high frequency cell If the identifiers of the at least one system information block group of the target high frequency cell are all different, the terminal device sends the second acquisition request to the network device, where the second acquisition request is used to acquire the target high frequency cell. At least one other system information block included in all of the system information block groups, and the network device transmits to the terminal device at least one other system information block included in all system information block groups of the target high frequency cell.

For the network device, one of the two acquisition requests is received: that is, the other SIB included in the entire system information block group is acquired, or the identification of the system information block group of the source high frequency cell and the target high frequency cell is different. The other SIBs included in the system information block group are processed in the same manner as S103 to S103' in the embodiment shown in FIG. 3, and details are not described herein again. It should be noted that the system information block requested by the terminal device should be the system information block that the terminal device needs to obtain. The at least one other SIB corresponding to the other SIB group id broadcasted by the network device may also be the other SIB that the terminal device needs to obtain. (Because the protocol defines which other SIBs the terminal device must acquire, while other other SIB terminal devices may not acquire it).

According to an embodiment of the present invention, a system information transmission method is configured to form a system information block group with other system information blocks of a target high frequency cell having the same system information content in a cell in a set area, and the terminal device performs a cell. When switching, the terminal device receives a basic system information message of the target network device, where the basic system information message carries the identifier of the system information block group and the area identifier of the target high frequency cell, and the terminal device according to the area identifier of the source high frequency cell and the target high frequency The difference between the regional identifiers of the cells, the identifiers of the system information block groups of the source high frequency cells, and the identifiers of the system information block groups of the target high frequency cells, and the system that is different from the identifier of the system information block group of the target high frequency cell The other system information blocks included in the information block group, so that in the high frequency networking, the terminal device does not need to acquire other system information blocks included in all the system information block groups of the target high frequency cell, thereby saving the relationship between the terminal device and the network device. Signaling overhead.

FIG. 6 is a schematic diagram of interaction of another method for transmitting system information according to an embodiment of the present invention. The method may include the following steps:

S301. When the terminal device is switched from the source high frequency cell to the target high frequency cell, the terminal device receives a basic system information message from the network device corresponding to the target high frequency cell, where the basic system information message includes at least An identifier of a basic system information block and a system information block group of the at least one basic system information block, each of the system information block groups having the same as the target high frequency cell at least one cell within a set area At least one basic system information block of the system information content.

In this embodiment, the system information block is divided into a basic system information block (minimum SIB) and other system information blocks (other SIB). The basic system information block may include MIB, SIB1, and SIB2, but does not define system information blocks included in the basic system information block. Other system information blocks are system information blocks in addition to the basic system information blocks. The basic system information block is system information sent by periodic broadcast.

The application scenario of this embodiment is a high frequency networking scenario. FIG. 4 is a schematic diagram of a high frequency cell area distribution according to an example of an embodiment of the present invention. As shown in FIG. 4, for a high-frequency network partitioning area, a cell in a group of a set of the same basic area of the basic system information block is divided into an area, for example, the area 1 includes cell1, cell2, and cell3, where Each cell includes one or more network devices, and most of the basic system information blocks of the three cells are the same. Similarly, the area 2 includes cell4 and cell5, and most of the basic system information blocks of the two cells are the same (in actual situations) The number of cells included in a zone can be more). The set area range refers to a custom area of a circle formed by a set distance as a radius, or an adjacent area, or a tracking area (TA: tracking area). If the setting area is TA, the area identifier broadcast in the minimum SIB is TAC.

For example, the area 1 includes the cell 1, the cell 2, and the cell 3, wherein the SIB X (X is a positive integer) and the SIB (X+1) in the minimum SIB of the cell 1 can be used for the cell 2, that is, the SIB X and the SIB in the minimum SIB of the cell 2 ( X+1) may be the same as the system information content of the current SIB X and SIB (X+1) in cell1, and then use SIB X and SIB (X+1) as a system information block group (minimum) SIB group) is identified (minimum SIB group id). If multiple cells in the area may have multiple identical minimum SIBs at the same time, the multiple minimum SIBs may be used as one system information block group. The minimum SIB group id in the same area cannot be repeated, and the minimum SIB group id in different areas can be repeated. The minimum SIB in the minimum SIB group may also include the version information of the minimum SIB. For the same minimum SIB, the system information content may be different for different versions.

Further, this embodiment is specifically a scenario in which the terminal device switches from the source high frequency cell to the target high frequency cell. The network device corresponding to the target high frequency cell broadcasts the basic system information message, and the terminal device can receive the basic system information message from the network device corresponding to the target high frequency cell. The basic system information message includes at least one basic system information block (minimum SIB) and a minimum SIB group id of the at least one basic system information block (minimum SIB). And each of the system information block groups includes at least one basic system information block having the same system information content as the target high frequency cell at least one cell within a set area. The terminal device may store an identifier of a system information block group of the target high frequency cell.

The terminal device further performs at least one of the following steps S302 and S302':

S302. If the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all the same, the terminal device stops acquiring. The basic system information message;

S302', if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, the terminal device acquires The at least one system information block group of the source high frequency cell identifies at least one basic system information block included in at least one system information block group different from the identification of the at least one system information block group of the target high frequency cell.

When the terminal device wants to switch to the target high frequency cell, first compare the identifier of the system information block group of the basic system information block of the source high frequency cell with the identifier of the system information block group of the basic system information block of the target high frequency cell, if The result is that the identifier of the system information block group of the basic system information block of the source high frequency cell is the same as the identifier of the system information block group of the basic system information block of the target high frequency cell, and after the terminal device switches to the target high frequency cell, The basic system information message may be stopped; if the result of the comparison is that the identifier of the system information block group of the basic system information block of the source high frequency cell is the same as the identification part of the system information block group of the basic system information block of the target high frequency cell, then The terminal device only needs to obtain the minimum SIB included in the system information block group that identifies different parts, and obtain the basic system message including the identifier of the system information block group and the basic system information block of the basic system information block of the target high frequency cell, and/or Or demodulate the acquired basic system information block. Therefore, in the high frequency networking, the terminal device does not need to always acquire all the basic system information blocks included in the basic system information message, thereby improving the endurance capability of the terminal device.

Optionally, the terminal device may further perform regional determination on the source high frequency cell and the target high frequency cell, and then S302 and S302' may be replaced by the terminal device to perform at least one of the following steps:

If the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and the identifier of the at least one system information block group of the source high frequency cell and the target high frequency stored by the terminal device If the identifiers of the at least one system information block group of the cell are all the same, the terminal device stops acquiring the basic system information message;

If the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and the identifier of the at least one system information block group of the source high frequency cell and the target high frequency stored by the terminal device And determining, by the terminal device, an identifier of the at least one system information block group of the source high frequency cell and an identifier of the at least one system information block group of the target high frequency cell. At least one basic system information block included in at least one system information block group of different parts;

And if the area identifier of the source high frequency cell and the area identifier of the target high frequency cell, the terminal device acquires at least one basic system information block included in the entire system information block group.

According to an embodiment of the present invention, a system information transmission method is configured to form a system information block group with a basic system information block having the same system information content in a target high-frequency cell in a set region range, and the terminal device performs a cell. When switching, the terminal device receives a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device according to the identifier of the system information block group of the source high frequency cell and the system information of the target high frequency cell The terminal device determines whether to continue to acquire the basic system information block or the basic system information block included in the system information block group of different parts of the identifier, so that the terminal device does not need to obtain basic system information all the time in the high frequency networking. All basic system information blocks included in the message improve the endurance of the terminal device.

FIG. 7 is a schematic diagram of interaction of another method for transmitting system information according to an embodiment of the present invention. The method may include the following steps:

S401. If the system information block of any cell adjacent to the target high frequency cell generates an update, the target network device receives the updated at least one system information block of the cell backhaul transmission that generates the system information block update. And the at least one system information block includes an identifier of the cell that generates the system information block update, and/or valid information of the at least one system information block.

S402. The target network device stores the updated at least one system information block of the cell backhaul transmission that generates the system information block update.

In this embodiment, the system information block is divided into a basic system information block (minimum SIB) and other system information blocks (other SIB). The basic system information block may include MIB, SIB1, and SIB2, but does not define system information blocks included in the basic system information block. Other system information blocks are system information blocks in addition to the basic system information blocks. The basic system information block is system information sent by periodic broadcast. The system information block in this embodiment may refer to the other SIB.

When the SIBs included in the neighboring cells are updated, the updated one or more SIBs are sent to the network devices corresponding to the neighboring cells by backhaul transmission between the network devices, or through the central network controller or other network devices. The updated one or more SIBs are sent to the network device corresponding to the neighboring cell. The SIB includes an identifier of the cell, and may also include valid information of the SIB. The valid information of the SIB of a cell is used to identify the version of all SIBs in the cell. For the same SIB, the version of the system is different. However, the update and store operations are optional, so steps S401, S402 are shown in dashed lines in the figure.

S403. When the terminal device is switched from the source high frequency cell to the target high frequency cell, the terminal device sends a request for acquiring system information of the target high frequency cell to the target network device corresponding to the target high frequency cell, where the The obtaining request includes the identifier of the source high frequency cell and/or the effective information of the system information block of the source high frequency cell, where the source corresponding to the identifier of the source high frequency cell is stored in the target high frequency cell At least one system information block of the high frequency cell.

When the terminal device is switched from the source high frequency cell to the target high frequency cell, the terminal device needs to acquire system information of the target high frequency cell to prepare for subsequent data transmission. Therefore, the terminal device sends the target to the target network device corresponding to the target high frequency cell. A request for acquiring system information of the high frequency cell, the acquisition request including an identifier of the source high frequency cell and/or effective information of a system information block of the source high frequency cell. At this time, the terminal device is generally in an idle state/inactive state.

S404. The target network device searches for at least one system information block of the source high frequency cell that is corresponding to the identifier of the source high frequency cell and/or the effective information of the system information block of the source high frequency cell. The target high frequency cell stores at least one version of the system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell.

Because the target high frequency cell has obtained the system information block of each neighboring cell through the backhaul transmission of the network device corresponding to the neighboring cell, the identifier of the source high frequency cell and/or the source high frequency cell are obtained. The valid information of the SIB can find one or more SIBs of the source high frequency cell corresponding to the identity of the source high frequency cell and/or the effective information of the SIB of the source high frequency cell.

S405. The target network device sends a response message to the terminal device, where, if at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell, The response message is used to indicate that at least one system information block of the target high frequency cell is identical to at least one system information block of the source high frequency cell; if at least one system information block of the target high frequency cell and the source The at least one system information block portion of the high frequency cell is identical, and the response message includes at least one system information block of the target high frequency cell different from the at least one system information block of the source high frequency cell; The at least one system information block of the cell is different from the at least one system information block of the source high frequency cell, and the response message includes all system information blocks of the target high frequency cell.

The target network device compares one or more SIBs of the source high frequency cell with one or more SIBs of the target high frequency cell, and if the comparison result is all the same, the target network device sends a response message to the terminal device. The response message only needs to indicate that one or more SIBs of the source high frequency cell are identical to one or more SIBs of the target high frequency cell, which greatly reduces repeated transmission of system information blocks, thereby greatly saving space between the network device and the terminal device. The signaling overhead; if the result of the comparison is partially the same, the response message only needs to carry multiple SIBs of the target high frequency cell and different SIBs of the multiple SIBs of the source high frequency cell, and the system information block is reduced to some extent. Repeated transmission, which saves the signaling overhead between the network device and the terminal device to a certain extent; if the comparison result is all different, the response message needs to carry all the SIBs of the target high frequency cell.

In a specific implementation, the terminal device in the idle/inactive state can send a system information block acquisition request to the target network device in the following three manners:

1. The terminal device sends a request for acquiring a system information block of a target high-frequency cell to a target network device corresponding to the target high-frequency cell, where the terminal device performs a random access channel (for example, physical random access) a dedicated preamble sequence or a PRACH dedicated resource of a Physical Random Access Channel (PRACH) to send a first random access message to the target network device, where the dedicated preamble sequence of the PRACH or the PRACH dedicated resource is used to indicate Transmitting, by the target network device, at least one system information block of the target high frequency cell to the terminal device, where the first random access message includes an identifier of the source high frequency cell, and/or the source high frequency The effective information of the system information block of the cell; the terminal device receiving the response message from the target network device, comprising: the terminal device receiving a second random access message from the target network device, the second random The access message includes a preamble identifier and the response message.

Specifically, the random access message 1 is a preamble that the terminal device sends to the network device on the physical random access channel. The terminal device can obtain the system information block acquisition request through the PRACH dedicated preamble or the PRACH dedicated resource through the random access message 1. The dedicated preamble is different from the traditional preamble, and the dedicated preamble is dedicated to requesting system information, and is not used to initiate random access, and may design a specific dedicated preamble corresponding to a specific one or more SIB requests; or through a PRACH dedicated resource transmission system. The information block acquisition request, that is, the dedicated part of the PRACH is used to send the system information block acquisition request, and is not used for random access. When the network device receives the preamble in the part of the PRACH resource, it is considered that the terminal device requests the system information. Instead of initiating random access, a specific PRACH dedicated resource may be designed to correspond to a particular one or more SIB requests.

When the terminal device sends the system information block acquisition request by using the PRACH-dedicated preamble or the PRACH dedicated resource, the valid information of the source high-frequency cell identifier/source high-frequency cell system information block is carried in the random access message 1, specifically, the source The effective information of the system information block of the identifier/source high frequency cell of the cell may be time-division multiplexed with the preamble, or may be frequency-multiplexed with the preamble, or combined in other manners, and is not limited.

After receiving the system information block acquisition request sent by the dedicated preamble or the PRACH dedicated resource, the target network device sends the corresponding system information block to the terminal device, and can carry the corresponding preamble identity, and the preamble identity is used for the terminal device to identify and send to the terminal device. The system information block, that is, the terminal device determines whether the received preamble identity corresponds to the preamble sent by itself, and if it corresponds, it is considered to be a system information block sent to itself. Specifically, after the terminal device sends the system information block acquisition request through the dedicated preamble or the PRACH dedicated resource, the system information radio network temporary identifier (SI-RNTI) is scrambled in the corresponding time-frequency resource. A channel for performing downlink control (for example, a Physical Downlink Control Channel (PDCCH)) to receive a system information block transmitted to itself at a corresponding resource location. The corresponding time-frequency resource may be a time-frequency resource having an agreed relationship with the time-frequency resource of the system information block acquisition request sent by the terminal device. For example, the interval system information block acquires two subframes after requesting three subframes of the subframe. The corresponding time-frequency resource may also be obtained by the terminal device from the scheduling information of the Other SIB in the minimum SIB, and the corresponding time-frequency resource may be a time window starting from a certain subframe/slot, and the length of the time window may be matched; Different source cell identifiers, different dedicated preamble/preamble transmission time-frequency resources may correspond to different SI-RNTIs, so that terminal devices that transmit different source cell identifiers and different dedicated preamble/preamble transmission time-frequency resources receive different versions of the system. information.

2. The terminal device sends a request for acquiring a system information block of the target high frequency cell to the target network device corresponding to the target high frequency cell, where the terminal device sends a third random access message to the target network device. The third random access message is used to instruct the target network device to deliver at least one system information block of the target high frequency cell to the terminal device, where the third random access message includes the An identifier of the source high frequency cell and/or valid information of a system information block of the source high frequency cell, where the third random access message is a channel (for example, physical) used by the terminal device to perform uplink data transmission. a first uplink transmission scheduled on a Physical Uplink Shared Channel (PUSCH); the terminal device receiving a response message from the target network device, including: receiving, by the terminal device, a packet from the target network device a fourth random access message, where the fourth random access message is a random access contention resolution message, and the fourth random access message includes the Should the message.

Specifically, the terminal device sends a system information block acquisition request by using the random access message 3, and the random access message 3 is the first scheduled uplink transmission of the terminal device on the PUSCH, and may include a Radio Resource Control (RRC) link request. , tracking area updates or scheduling requests, etc. The terminal device carries the identifier of the source cell in the system information block acquisition request. The message 4 in the random access process is a network device that sends a contention resolution message on a channel for performing downlink data transmission (for example, a Physical Downlink Shared Channel (PDSCH)), and the network device is in random access. In the message 4 in the process, the terminal system sends a corresponding system information block and carries the identifier of the terminal device, so that the terminal device identifies the system information block sent to itself. The specific system information block transmission and acquisition process can refer to mode 1.

3. The terminal device sends an acquisition request of the system information block of the target high frequency cell to the target network device corresponding to the target high frequency cell, where the terminal device sends an unauthorized transmission message to the target network device, where The unauthorized transmission message is used to indicate that the target network device sends at least one system information block of the target high frequency cell to the terminal device, where the unauthorized transmission message includes an identifier of the source high frequency cell. And/or valid information of the system information block of the source high frequency cell.

Specifically, the terminal device in the Inactive state may also send a system information block acquisition request to the target network device by using a Grant-Free mode. The transmission scheme of the Grant-Free means that in the Public Land Mobile Network (PLMN), the terminal device does not need to request the network device to allocate the indication transmission resource by using the scheduling request mode. Specifically, the terminal device may use the code resource, the pilot resource, and the modulation supported by the time-frequency resource on the specified time-frequency resource according to different characteristics of the transmission data, such as transmission delay or reliability. The method of data transmission by coding scheme, feedback class, diversity mode, etc., to reduce network signaling overhead and/or reduce transmission delay. The terminal device carries the identifier of the source cell and the system information block of the source cell in the request, and after receiving the request, the network device sends the corresponding system information block to the terminal device, and carries the identifier of the terminal device, so that the terminal device identifies and sends the identifier to the terminal device. Your own system information block. The specific system information block transmission and acquisition process can refer to mode 1.

In addition, if the terminal device is in the connected state and the terminal device switches from the source cell to the target cell, the target cell already knows the identity of the source cell, and the source cell can block the system message block of the source cell by using signaling during the handover process. The effective information informs the target network device corresponding to the target cell, and the interaction diagram of the system information block obtained when the terminal device in the connected state switches the cell is shown in FIG. 8. The specific interaction process is as follows:

Steps 1 and 2: The terminal device reports the measurement report to the source network device, and the source network device determines whether to switch the terminal device to another network device.

Step 3: The source network device initiates a handover request to the target network device, and carries valid information (such as a Value Tag) of the source cell system information block.

Step 4: The target cell performs admission control and radio resource configuration on the terminal device, and determines the system information block and the source cell of the current cell according to the valid information of the received system information block of the source cell and the stored system information block of the neighboring cell. Whether the system information blocks are the same;

Step 5: The target network device sends a handover confirmation message to the source network device, where the message includes the admission result and the radio resource configuration information. If the target network device determines in step 4 that the terminal device needs the local cell system information and the source cell system information, Different, the system information of different parts is sent to the source network device, and the part of the system information may include other SIB and/or minimum SIB;

Step 6: The source network device forwards the information (system information of different parts) to the terminal device, and commands the terminal device to perform handover;

Steps 7, 8, and 9: The terminal device completes the access on the target network device according to the configuration information, and the process may refer to related processes in the prior art.

According to an embodiment of the present invention, a method for transmitting system information is provided, in each cell, a system information block of a neighboring cell is stored, and when the target network device receives a request for acquiring a system information block of the terminal device that performs handover, The difference between the system information block of the target high frequency cell and the system information block of the source high frequency cell can reduce the repeated transmission of the system information block and save the signaling overhead between the network device and the terminal device.

The above describes the method of the embodiment of the present invention in detail, and the apparatus of the embodiment of the present invention is provided below.

FIG. 9 is a schematic diagram of a module of a terminal device according to an embodiment of the present invention. The terminal device 1000 may include a receiving unit 11 and a sending unit 12.

The receiving unit 11 is configured to perform downlink communication with a network device, for example, performing part of the above S101, and receiving a basic system information message from a network device corresponding to the target high frequency cell.

The sending unit 12 is configured to perform uplink communication with the network device, for example, perform at least one of the foregoing S102 to S102", or perform at least one of the foregoing S203 to S203"', and acquire other systems from the network device. Information block.

For the specific implementation of the above module, refer to the description in the method embodiment, and details are not described herein again.

According to an embodiment of the present invention, a terminal device has a system information block group having the same system information content as a target high-frequency cell in a cell in a set region, and when the terminal device performs cell handover, Receiving, by the terminal device, a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device according to the identifier of the system information block group of the source high frequency cell and the system information block group of the target high frequency cell And identifying, by the identifier, the other system information blocks included in the system information block group different from the identifier of the system information block group of the target high frequency cell, so that in the high frequency networking, the terminal device does not need to acquire all the systems of the target high frequency cell. The other system information blocks included in the information block group save the signaling overhead between the terminal device and the network device.

FIG. 10 is a schematic diagram of a module of a network device according to an embodiment of the present invention. The network device 2000 may include a sending unit 21 and a receiving unit 22.

The transmitting unit 21 may be configured to perform downlink communication with the terminal device, for example, perform the above-mentioned S101 or S202, broadcast the basic system information message, and perform, for example, at least one of the above S103 to S103', or the above S204 to S204" At least one of the portions transmits the other pieces of system information requested to be acquired to the terminal device.

The receiving unit 22 may be configured to perform uplink communication with the terminal device, for example, at least one of the foregoing S103 to S103', or at least one of the foregoing S204 to S204", receiving an acquisition request of the terminal device, and further, It can also be used to perform communication with network devices of other cells, for example, performing the above-mentioned part of S201, and receiving an identifier of the updated at least one system information block group that generates the cell backhaul transmission of other system information block updates.

According to an embodiment of the present invention, a network device is configured to form a system information block group with other system information blocks having the same system information content in a target high-frequency cell in a set region range, and when the terminal device performs cell handover, Receiving, by the terminal device, a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device according to the identifier of the system information block group of the source high frequency cell and the system information block group of the target high frequency cell The difference between the identifiers, the other system information blocks included in the system information block group different from the identifier of the system information block group of the target high frequency cell, so that in the high frequency networking, the terminal device does not need to acquire all the target high frequency cells. The other system information blocks included in the system information block group save the signaling overhead between the network device and the terminal device.

FIG. 11 is a schematic diagram of another terminal device according to an embodiment of the present invention. The terminal device 3000 may include a receiving unit 31 and a sending unit 32.

The receiving unit 31 is configured to perform downlink communication with the network device, for example, perform the above part of S301, and receive a basic system information message from the network device.

The transmitting unit 32 is configured to perform uplink communication with the network device, for example, perform at least one of the foregoing S302 and S302', and acquire basic system information blocks from the network device.

According to an embodiment of the present invention, a terminal device has a system information block group having the same system information content as a target high-frequency cell in a cell in a set region, and when the terminal device performs cell handover, Receiving, by the terminal device, a basic system information message of the target network device, where the basic system information message carries an identifier of the system information block group, and the terminal device according to the identifier of the system information block group of the source high frequency cell and the system information block group of the target high frequency cell The difference between the identifiers, the terminal device determines whether to continue to acquire the basic system information block or the basic system information block included in the system information block group of different parts of the identifier, so that in the high frequency networking, the terminal device does not need to always obtain the basic system information message included All basic system information blocks improve the endurance of the terminal equipment.

FIG. 12 is a schematic diagram of still another module of a terminal device according to an embodiment of the present invention. The terminal device 4000 may include a receiving unit 41 and a sending unit 42.

The sending unit 42 is configured to perform uplink communication with the network device, for example, execute the above part of S403, and send an acquisition request of the system information to the network device.

The receiving unit 41 is configured to perform downlink communication with the network device, for example, performing part of the above S405, and receiving a response message of the network device.

According to an embodiment of the present invention, a system information block of a neighboring cell is stored in each cell, and when the target network device receives a request for acquiring a system information block of the terminal device that performs handover, the target high frequency is compared. The difference between the system information block of the cell and the system information block of the source high frequency cell can reduce the repeated transmission of the system information block and save the signaling overhead between the terminal device and the network device.

FIG. 13 is a schematic diagram of another network device according to an embodiment of the present invention. The network device may include a receiving unit 51, an executing unit 52, and a sending unit 53.

The receiving unit 51 is configured to perform uplink communication with the terminal device, for example, perform the foregoing part of S403, receive the acquisition request of the system information of the terminal device, and further perform communication with the network device of the other cell, for example, perform The part of S401 above receives the updated at least one system information block of the cell backhaul transmission that generates the system information block update.

The executing unit 52 is configured to control an operation of the network device, for example, perform the foregoing part of S402, store the updated at least one system information block of the cell backhaul transmission that generates the system information block update, and perform the foregoing And a portion of S404, searching for at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell and/or the effective information of the system information block of the source high frequency cell.

The sending unit 53 is configured to perform downlink communication with the terminal device, for example, perform the above part of S405, and send a response message to the terminal device.

According to an embodiment of the present invention, a system information block of a neighboring cell is stored in each cell, and when the target network device receives a request for acquiring a system information block of the terminal device that performs handover, the target high frequency is compared. The difference between the system information block of the cell and the system information block of the source high frequency cell can reduce the repeated transmission of the system information block and save the signaling overhead between the network device and the terminal device.

FIG. 14 is a hardware architecture diagram of a terminal device according to an embodiment of the present invention. The terminal device 6000 may include a receiver 61, a transmitter 62, a memory 63, and a processor 64. The receiver 61 and the transmitter 62. The memory 63 and the processor 64 are connected to one another via a bus 65. The related functions implemented by the receiving unit 11 in FIG. 9 can be implemented by the receiver 61, and the related functions implemented by the transmitting unit 12 can be implemented by the transmitter 62.

The memory 63 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), or A Compact Disc Read-Only Memory (CD-ROM) for storing related instructions and data.

Receiver 61 is for receiving data and/or signals, and transmitter 62 is for transmitting data and/or signals. The transmitter and receiver can be separate devices or a single device.

The processor 64 may include one or more processors, for example, including one or more central processing units (CPUs). In the case where the processor 64 is a CPU, the CPU may be a single core CPU, It can be a multi-core CPU.

The memory 63 is used to store program codes and data of the network device.

The receiver 61 is configured to perform downlink communication with the terminal device, for example, performing the above part of S101, and receiving a basic system information message from the network device corresponding to the target high frequency cell. For details, refer to the description in the method embodiment, and details are not described herein again.

The transmitter 62 is configured to perform uplink communication with the terminal device, for example, perform at least one of the foregoing S102 to S102", or perform at least one of the foregoing S203 to S203"', and acquire other system information blocks from the network device. .

For details, refer to the description in the method embodiment, and details are not described herein again.

It will be understood that Figure 14 only shows a simplified design of the terminal device. In practical applications, the terminal device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are protected by the present invention. Within the scope.

FIG. 15 is a hardware architecture diagram of a network device according to an embodiment of the present invention. The network device 7000 may include a receiver 71, a transmitter 72, a memory 73, and a processor 74. The receiver 71 and the transmitter 72. The memory 73 and the processor 74 are connected to one another via a bus 75. The related functions implemented by the transmitting unit 21 in FIG. 10 can be implemented by the transmitter 72, and the related functions implemented by the receiving unit 22 can be implemented by the receiver 71.

Memory 73 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, which is used for related instructions and data.

Receiver 71 is operative to receive data and/or signals, and transmitter 72 is operative to transmit data and/or signals. The transmitter and receiver can be separate devices or a single device.

The processor 74 may include one or more processors, for example, including one or more CPUs. In the case where the processor 74 is a CPU, the CPU may be a single core CPU or a multi-core CPU.

The memory 73 is used to store program codes and data of the network device.

The transmitter 72 is configured to perform downlink communication with the terminal device, for example, to perform a portion of the above S101 or S202, to broadcast a basic system information message, and to perform, for example, at least one of the above S103 to S103', or in the above S204 to S204" For at least one part, the other system information block that is requested to be obtained is sent to the terminal device. For details, refer to the description in the method embodiment, and details are not described herein again.

The receiver 71 is configured to perform uplink communication with the terminal device, for example, at least one of the foregoing S103 to S103', or at least one of the foregoing S204 to S204", to receive an acquisition request of the terminal device, and further, further It can be used to perform communication with network devices of other cells, for example, performing the above-mentioned part of S201, and receiving an identifier of the updated at least one system information block group that generates the cell backhaul transmission of the other system information block update.

It will be appreciated that Figure 15 only shows a simplified design of the network device. In practical applications, the network device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement the present invention are protected by the present invention. Within the scope.

FIG. 16 is a hardware architecture diagram of another terminal device according to an embodiment of the present invention. The terminal device 8000 may include a receiver 81, a transmitter 82, a memory 83, and a processor 84. The receiver 81 transmits The processor 82, the memory 83 and the processor 84 are connected to one another via a bus 85. The related functions implemented by the receiving unit 31 in FIG. 11 can be implemented by the receiver 81, and the related functions implemented by the transmitting unit 32 can be implemented by the transmitter 82.

Memory 83 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, which is used for related instructions and data.

Receiver 81 is operative to receive data and/or signals, and transmitter 82 is operative to transmit data and/or signals. The transmitter and receiver can be separate devices or a single device.

The processor 84 may include one or more processors, for example, including one or more CPUs. In the case where the processor 84 is a CPU, the CPU may be a single core CPU or a multi-core CPU.

The memory 83 is used to store program codes and data of the terminal device.

The receiver 81 is configured to perform uplink communication with the terminal device, for example, perform the above-mentioned part of S301, and receive a basic system information message from the network device. For details, refer to the description in the method embodiment, and details are not described herein again.

The transmitter 82 is configured to perform downlink communication with the terminal device, for example, performing at least one of the foregoing S302 and S302' to acquire a basic system information block from the network device.

It will be understood that Figure 16 only shows a simplified design of the terminal device. In practical applications, the terminal device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are protected by the present invention. Within the scope.

Referring to FIG. 17, which is a hardware architecture diagram of a terminal device according to an embodiment of the present invention, the terminal device 9000 may include a receiver 91, a transmitter 92, a memory 93, and a processor 94. The receiver 91 transmits The processor 92, the memory 93 and the processor 94 are connected to one another via a bus 95. The related functions implemented by the receiving unit 41 in FIG. 12 can be implemented by the receiver 91, and the related functions implemented by the transmitting unit 42 can be implemented by the transmitter 92.

Memory 93 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, which is used for related instructions and data.

Receiver 91 is for receiving data and/or signals, and transmitter 92 is for transmitting data and/or signals. The transmitter and receiver can be separate devices or a single device.

The processor 94 may include one or more processors, for example, including one or more CPUs. In the case where the processor 94 is a CPU, the CPU may be a single core CPU or a multi-core CPU.

The memory 93 is used to store program codes and data of the terminal device.

The transmitter 92 is configured to perform downlink communication with the terminal device, for example, execute the portion of the above S403, and send an acquisition request of the system information to the network device. For details, refer to the description in the method embodiment, and details are not described herein again.

The receiver 91 is configured to perform uplink communication with the terminal device, for example, perform the above part of S405, and receive a response message of the network device.

It will be understood that Figure 17 only shows a simplified design of the terminal device. In practical applications, the terminal device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement the present invention are protected by the present invention. Within the scope.

FIG. 18 is a hardware architecture diagram of another network device according to an embodiment of the present invention. The network device 1100 may include a receiver 111, a transmitter 112, a memory 113, and a processor 114. The receiver 111 transmits The processor 112, the memory 113 and the processor 114 are connected to one another via a bus 118. The related functions implemented by the receiving unit 51 in FIG. 13 can be implemented by the receiver 111. The related functions implemented by the transmitting unit 53 can be implemented by the transmitter 112, and the related functions implemented by the executing unit 52 can pass one or more The processor 114 is implemented.

Memory 113 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, which is used for related instructions and data.

Receiver 111 is operative to receive data and/or signals, and transmitter 112 is operative to transmit data and/or signals. The transmitter and receiver can be separate devices or a single device.

The processor 114 may include one or more processors, for example, including one or more CPUs. In the case where the processor 114 is a CPU, the CPU may be a single core CPU or a multi-core CPU.

The memory 113 is used to store program codes and data of the network device.

The receiver 111 is configured to perform uplink communication with the terminal device, for example, perform the foregoing part of S403, receive an acquisition request of system information of the terminal device, and further perform communication with network devices of other cells, for example, perform the above And a portion of S401, receiving the updated at least one system information block of the cell backhaul transmission that generates the system information block update.

The processor 114 is configured to control an operation of the network device, for example, perform the foregoing part of S402, store the updated at least one system information block of the cell backhaul transmission that generates the system information block update, and perform the foregoing S404. And searching for at least one system information block of the source high frequency cell corresponding to the identifier of the source high frequency cell and/or the effective information of the system information block of the source high frequency cell. For details, refer to the description in the method embodiment, and details are not described herein again.

The transmitter 112 is configured to perform downlink communication with the terminal device, for example, perform the above part of S405, and send a response message to the terminal device. For details, refer to the description in the method embodiment, and details are not described herein again.

It will be appreciated that Figure 18 only shows a simplified design of the network device. In practical applications, the network device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all network devices that can implement the present invention are protected by the present invention. Within the scope.

In still another embodiment, a computer readable storage medium is provided having stored therein instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.

In still another embodiment, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in or transmitted by a computer readable storage medium. The computer instructions can be from a website site, computer, server or data center to another website site by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Transfer from a computer, server, or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)), or the like.

One of ordinary skill in the art can understand all or part of the process of implementing the above embodiments, which can be completed by a computer program to instruct related hardware, the program can be stored in a computer readable storage medium, when the program is executed The flow of the method embodiments as described above may be included. The foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.

Claims

A method for transmitting system information, characterized in that the method comprises:

When the terminal device switches from the source high frequency cell to the target high frequency cell, the terminal device receives a basic system information message from the network device corresponding to the target high frequency cell, where the basic system information message includes at least one other An identifier of a system information block group of the system information block and at least one basic system information block, each of the system information block groups including the same system information content as the at least one cell of the target high frequency cell within a set area At least one other system information block, the at least one other system information block being a system information block other than the basic system information block;

The terminal device further performs at least one of the following steps:

If the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all the same, the terminal device does not need to obtain the At least one other system information block included in any one of the system information block groups of the target high frequency cell;

And if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, the terminal device is to the network The device sends a first acquisition request, where the first acquisition request is used to request to acquire at least one other system information block included in the system information block group different from the identifier of the at least one system information block group of the target high frequency cell;

And if the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all different, the terminal device is to the network The device sends a second acquisition request, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.
The method of claim 1, wherein the basic system information message further includes an area identifier of the target high frequency cell, the method further comprising:

The terminal device further performs at least one of the following steps:

And if the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the terminal device sends the second acquisition request to the network device;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target If the identifiers of the at least one system information block group of the frequency cell are all the same, the terminal device does not need to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target And the identifier part of the at least one system information block group of the frequency cell is the same, and the terminal device sends the first acquisition request to the network device;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target The identifiers of the at least one system information block group of the frequency cell are all different, and the terminal device sends the second acquisition request to the network device.
The method according to claim 1 or 2, wherein the system information block group having the same system information content within the set area has the same identifier, and the set area has different system information. The system information block group of the content has different identifiers.
A method for transmitting system information, characterized in that the method comprises:

The network device corresponding to the target high frequency cell broadcasts a basic system information message, wherein the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, and each of the system information The block group includes at least one other system information block having the same system information content as the target high frequency cell at least one cell within a set area, the at least one other system information block being in addition to the basic system information block System information block outside;

The network device further performs at least one of the following steps:

If the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, the network device receives the terminal device a first obtaining request, the first obtaining request for requesting acquiring an identifier of at least one system information block group of the source high frequency cell of the terminal device and an identifier of at least one system information block group of the target high frequency cell And at least one other system information block included in the system identification block group that is different in the requested identification part; and the network device sends the at least one other system information block included in the system identification block group different in the requested identification part to the terminal device;

If the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all different, the network device receives the a second acquisition request of the terminal device, where the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the network device sends the location information to the terminal device At least one other system information block included in all system information block groups of the target high frequency cell.
The method of claim 4, wherein the basic system information message further includes an area identifier of the target high frequency cell, the method further comprising:

The network device further performs at least one of the following steps:

If the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the network device receives the second acquisition request from the terminal device, and the network device sends the network device to the terminal device Transmitting at least one other system information block included in all system information block groups of the target high frequency cell;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target The identification part of the at least one system information block group of the frequency cell is the same, the network device receives the first acquisition request from the terminal device, and the network device sends the requested identification part to the terminal device differently. At least one other system information block included in the system information block group;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target The network device receives the second acquisition request from the terminal device, and the network device sends the target high frequency cell to the terminal device, where the identifiers of the at least one system information block group of the frequency cell are all different. At least one other system information block included in all of the system information block groups.
The method according to claim 4 or 5, wherein the system information block group transmitted by the network device to the terminal device further comprises an identifier of the system information block group.
The method according to any one of claims 4 to 6, wherein the method further comprises:

If the at least one other system information block included in any system information block group of any cell adjacent to the target high frequency cell generates an update, the network device receives the cell backhaul transmission that generates another system information block update. The identifier of at least one system information block group after the update;

The network device compares an identifier of the at least one other system information block group of the target high frequency cell with an identifier of the updated at least one system information block group of the neighboring cell, to obtain at least one system with the same identifier An identifier of the information block group, and broadcasting an identifier of the at least one system information block group having the same identifier in the basic system information message.
A method for transmitting system information, characterized in that the method comprises:

When the terminal device switches from the source high frequency cell to the target high frequency cell, the terminal device receives a basic system information message from the network device corresponding to the target high frequency cell, where the basic system information message includes at least one basic And an identifier of a system information block and at least one system information block group of the basic system information block, each of the system information block groups including the same system as the target high frequency cell in at least one cell within a set area At least one basic system information block of information content;

The terminal device further performs at least one of the following steps:

And determining, by the terminal device, an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and a system information block group of at least one of the basic system information blocks of the target high frequency cell The identifiers are all the same, and the terminal device stops acquiring the basic system information message;

And determining, by the terminal device, an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and a system information block group of at least one of the basic system information blocks of the target high frequency cell And obtaining, by the terminal device, an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and at least one of the basic system information blocks of the target high frequency cell The system information block group identifies at least one basic system information block included in at least one system information block group of the different portion.
A terminal device, comprising:

a receiving unit, configured to receive, when the terminal device switches from the source high frequency cell to the target high frequency cell, a basic system information message from the network device corresponding to the target high frequency cell, where the basic system information message includes at least one An identifier of a system information block group of the other system information block and at least one basic system information block, each of the system information block groups having the same system information as the at least one cell of the target high frequency cell within a set area At least one other system information block of content, the at least one other system information block being a system information block other than the basic system information block;

a sending unit, configured to perform at least one of the following operations:

If the identifier of the at least one system information block group of the source high frequency cell and the identifier of the at least one system information block group of the target high frequency cell are all the same, the target high frequency cell does not need to be acquired. At least one other system information block included in any one of the system information block groups;

And if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, sending the first message to the network device Obtaining a request, the first obtaining request for requesting acquiring at least one other system information block included in a system information block group different from an identifier of at least one system information block group of the target high frequency cell;

And if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is different from the identifier of the at least one system information block group of the target high frequency cell, sending a second message to the network device Obtaining a request, where the second obtaining request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell.
The terminal device according to claim 9, wherein the basic system information message further includes an area identifier of the target high frequency cell, and the sending unit is configured to perform at least one of the following operations:

And if the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, sending the second acquisition request to the network device;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target If the identifiers of the at least one system information block group of the frequency cell are all the same, it is not necessary to acquire at least one other system information block included in any one of the system information block groups of the target high frequency cell;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target And the identifier part of the at least one system information block group of the frequency cell is the same, and the first acquiring request is sent to the network device;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target If the identifiers of the at least one system information block group of the frequency cell are all different, the second acquisition request is sent to the network device.
The terminal device according to claim 9 or 10, wherein the system information block group having the same system information content in the set area has the same identifier, and the set area has different systems. The system information block group of the information content has different identifiers.
A network device, comprising:

a sending unit, configured to broadcast a basic system information message, wherein the basic system information message includes an identifier of a system information block group of at least one other system information block and at least one basic system information block, each of the system information block groups including At least one other system information block having the same system information content as the target high frequency cell in at least one cell within the set area, the at least one other system information block being system information other than the basic system information block Piece;

a receiving unit, configured to: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is the same as the identifier portion of the at least one system information block group of the target high frequency cell, receive the terminal from the terminal a first acquisition request of the device, where the first acquisition request is used to request acquisition of an identifier of at least one system information block group of the source high frequency cell of the terminal device and at least one system information block group of the target high frequency cell Identifying at least one other system information block included in a portion of the different system information block groups, and the transmitting unit is configured to send, to the terminal device, at least one other system information block included in the system identification block group different in the requested identification portion; and / or

The receiving unit is further configured to: if the identifier of the at least one system information block group of the source high frequency cell stored by the terminal device is different from the identifier of at least one system information block group of the target high frequency cell, receive a second acquisition request from the terminal device, the second acquisition request is used to acquire at least one other system information block included in all system information block groups of the target high frequency cell, and the sending unit is further configured to The terminal device sends at least one other system information block included in all system information block groups of the target high frequency cell.
The network device according to claim 12, wherein the basic system information message further includes an area identifier of the target high frequency cell;

And if the area identifier of the source high frequency cell is different from the area identifier of the target high frequency cell, the receiving unit is configured to receive the second acquisition request from the terminal device, and the sending unit is configured to send Transmitting, by the terminal device, at least one other system information block included in all system information block groups of the target high frequency cell; and/or

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target The identification part of the at least one system information block group of the frequency cell is the same, the receiving unit is configured to receive the first acquisition request from the terminal device, and the sending unit is configured to send the requested request to the terminal device Identifying at least one other system information block included in the different system information block groups;

And if the area identifier of the source high frequency cell is the same as the area identifier of the target high frequency cell, and if the identifier of the at least one system information block group of the source high frequency cell that is stored by the terminal device is higher than the target The identifiers of the at least one system information block group of the frequency cell are all different, the receiving unit is configured to receive the second acquisition request from the terminal device, and the sending unit is configured to send the At least one other system information block included in all system information block groups of the target high frequency cell.
The network device according to claim 12 or 13, wherein the system information block group transmitted to the terminal device further comprises an identifier of the system information block group.
A network device according to any one of claims 12 to 14, wherein:

The receiving unit is further configured to: if the at least one other system information block included in any system information block group of any cell adjacent to the target high frequency cell generates an update, and receive the cell that generates another system information block update. Returning an identifier of the updated at least one system information block group of the transmission;

The sending unit is further configured to compare an identifier of the at least one other system information block group of the target high frequency cell with an identifier of the updated at least one system information block group of the neighboring cell, to obtain the same identifier. An identifier of the at least one system information block group, and broadcasting the identifier of the at least one system information block group having the same identifier in the basic system information message.
A terminal device, comprising:

a receiving unit, configured to receive, when the terminal device switches from the source high frequency cell to the target high frequency cell, a basic system information message from the network device corresponding to the target high frequency cell, where the basic system information message includes at least one An identifier of a basic system information block and a system information block group of at least one of the basic system information blocks, each of the system information block groups having the same as at least one cell of the target high frequency cell within a set area At least one basic system information block of system information content;

a sending unit, configured to perform at least one of the following operations:

And determining, by the terminal device, an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and a system information block group of at least one of the basic system information blocks of the target high frequency cell If the identifiers are all the same, the acquisition of the basic system information message is stopped;

And determining, by the terminal device, an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and a system information block group of at least one of the basic system information blocks of the target high frequency cell Obtaining the same identifier portion, acquiring an identifier of a system information block group of at least one of the basic system information blocks of the source high frequency cell and a system information block group of at least one of the basic system information blocks of the target high frequency cell At least one basic system information block included in at least one system information block group identifying different portions.