WO2013102407A1 - Method, device, and system for machine terminal communication - Google Patents

Abstract

A method, device, and system for machine terminal communication. The method comprises: parsing configuration information of a physical downlink control channel from a master information block (MIB) received; and receiving on a corresponding physical downlink control channel, on the basis of the configuration information, downlink control information hosted on the physical downlink control channel. In the method, device, and system of the present invention for machine terminal communication, by transmitting to a terminal the MIB containing the configuration information of the physical downlink control channel, a base station allows the terminal to receive on the corresponding physical downlink control channel the downlink control information on the basis of the configuration information. Also provided in the present solution are the device and system for machine terminal communication.

Description

 Machine terminal communication method, device and system

 This application claims priority to Chinese Patent Application No. 201210001226.4, entitled "A Machine Terminal Communication Method, Apparatus and System", filed on January 4, 2012, the entire contents of In this application.

Technical field

 The present invention relates to a wireless technology, and in particular, to a method, device and system for communication of a machine terminal. Background technique

 As shown in Figure 1, Machine-Type Communication (MTC) refers to a communication method between a machine and a machine (device and device) that does not require human participation. Current Core Network Specification 3GPP 22.368 defines 16 important features in MTC communications, including low mobility, time control, delay tolerance, and online small data transmission. For different applications, including meter reading applications, remote control, etc., there may be one feature or a combination of several features.

 Since spectrum resources are very valuable, considering the sharing of carrier waves with everyone in the MTC business development is an effective solution to improve the utilization of spectrum resources.

 Existing Long Term Evolution (LTE) physical downlink control channel (PDCCH,

The Physical Downlink Control CHannel ) occupies the first n symbols (n is less than or equal to 3) of each subframe (1 millisecond) in the time domain, and the frequency domain occupies the bandwidth of the entire LTE carrier. For example, if the bandwidth of the LTE downlink carrier is 20 MHz, the bandwidth occupied by the PDCCH in the frequency domain is 20 MHz. In the existing PDCCH design scheme, if the MTC terminal needs to work on a carrier with a bandwidth of M, it must have the capability of receiving the same bandwidth on the radio. For example, if the terminal works on a 20M carrier, it must have a 20M bandwidth RF reception capability in order to correctly receive the PDCCH of its carrier. For the MTC terminal, on the one hand, the amount of downlink data is small, and if it works on a 20M carrier, the transmission rate of the 20M bandwidth is not required. On the other hand, the radio frequency transceiver capability is one of the factors affecting the terminal cost. If the MTC terminal and the common commercial terminal work in common carrier according to the prior art, the MTC terminal and the common commercial terminal must have the same radio frequency transceiver capability. Not only does it increase the cost of the MTC terminal, but it is also a waste of such RF capability for the MTC terminal.

Summary of the invention

An object of the present invention is to provide a method, device and system for communication of a machine terminal, which are realized The MTC terminal only collects the downlink control information on the bandwidth of the working carrier, so that the MTC terminal and the common commercial terminal share the carrier, and the RF transceiver capability of the MTC terminal does not need to be improved, and the cost of the MTC terminal is reduced.

 In order to achieve the above object, according to an aspect of the present invention, a machine type communication method is provided, including:

 The configuration information of the physical downlink control channel is parsed from the received primary system information MIB; and the downlink control information carried by the physical downlink control channel is received on the corresponding physical downlink control channel according to the configuration information.

 The physical downlink control channel is a physical downlink control channel dedicated to machine type communication. The configuration information includes: subframe information where the physical downlink control channel is located, location information of the physical downlink control channel in the time domain, and location information of the physical downlink control channel in the frequency domain.

 The configuration information further includes: a system frame number of the physical downlink control channel.

 Preferably, parsing the configuration information of the physical downlink control channel from the primary system information includes: obtaining configuration information of the dedicated physical downlink control channel according to multiple bits in the MIB;

 Or calculating configuration information of the dedicated physical downlink control channel according to a pre-agreed relationship between the parameter and the configuration information according to the parameter in the MIB;

 Or, the configuration information preset in the MIB is used as configuration information of the dedicated physical downlink control channel;

 Or, according to the identifier in the MIB, the configuration information corresponding to the identifier is selected from the pre-agreed group configuration information as the configuration information of the dedicated physical downlink control channel.

 In order to achieve the above object, according to another aspect of the present invention, a machine type communication method is provided, including:

 Generating an MIB including dedicated physical downlink control channel configuration information;

 The MIB is sent to the MTC terminal.

 The physical downlink control channel is a physical downlink control channel dedicated to machine type communication.

 The configuration information includes: subframe information where the physical downlink control channel is located, location information of the physical downlink control channel in the time domain, and location information of the physical downlink control channel in the frequency domain.

The configuration information further includes: a system frame number of the physical downlink control channel. Generating an MIB containing physical downlink control channel configuration information includes:

 Adding a plurality of bits indicating the configuration information to the MIB;

 Or calculating a parameter corresponding to the configuration information according to the preset correspondence, and adding the parameter to the MIB;

 Or setting a corresponding identifier for the multiple sets of configuration information, and adding the identifier to the MIB.

 In order to achieve the above object, according to another aspect of the present invention, a machine type communication method is provided, comprising: transmitting, by a base station, downlink control information to an MTC terminal through a physical downlink control channel dedicated to machine type communication.

 To achieve the above object, according to another aspect of the present invention, an MTC terminal is provided, including: a receiving module, configured to receive an MIB;

 a parsing module, configured to parse the configuration information of the physical downlink control channel from the MIB; the receiving module, configured to receive downlink control of the physical downlink control channel bearer on the corresponding physical downlink control channel according to the configuration information information.

 In order to achieve the above object, according to another aspect of the present invention, a base station is provided, including: a generating module, configured to generate an MIB that includes physical downlink control channel configuration information;

 And a sending module, configured to send the MIB to the MTC terminal.

 The generating module is configured to add a plurality of bits indicating the configuration information to the MIB.

 Or calculating a parameter corresponding to the configuration information according to the preset correspondence, and adding the parameter to the MIB;

 Alternatively, a corresponding identifier is set for the multiple sets of configuration information, and the identifier is added to the MIB. In order to achieve the above object, according to another aspect of the present invention, an MTC terminal is provided, comprising: a receiving module, configured to receive downlink control information on a physical downlink control channel dedicated to machine type communication.

 In order to achieve the above object, according to another aspect of the present invention, a base station is provided, comprising: a transmitting module, configured to send downlink control information on a physical downlink control channel dedicated to machine type communication.

 In order to achieve the above object, according to another aspect of the present invention, a machine type communication system is provided, comprising:

a base station, configured to generate an MIB that includes physical downlink control channel configuration information, and send the MIB Sending to the MTC terminal; transmitting downlink control information carried by the physical downlink control channel on the physical downlink control channel;

 The MTC terminal is configured to parse the configuration information of the physical downlink control channel from the received MIB, and receive the downlink control information on the corresponding physical downlink control channel according to the configuration information.

 In order to achieve the above object, according to another aspect of the present invention, a machine type communication system is provided, comprising:

 The base station is configured to send downlink control information on a physical downlink control channel dedicated to machine type communication; and the MTC terminal is configured to receive downlink control information on a physical downlink control channel dedicated to machine type communication.

 The device terminal communication method, device and system of the present invention, the base station sends the MIB including the physical downlink control channel configuration information to the terminal, and the terminal can receive the downlink control information on the corresponding physical downlink control channel according to the configuration information. In this way, the mixing of the physical downlink control channels is avoided, and the resource utilization is improved. The MTC terminal only collects downlink control information on the bandwidth of the working carrier, so that the MTC terminal and the common commercial terminal share the carrier, and the MTC terminal does not need to be improved. The RF transceiver capability reduces the cost of the MTC terminal.

DRAWINGS

 FIG. 1 is a schematic diagram of a prior art MTC scenario;

 2 is a flow chart of an embodiment of a communication method of a machine terminal of the present invention;

 3 is a structural diagram of an embodiment of a base station according to the present invention;

 4 is a structural diagram of an embodiment of an MTC terminal of the present invention.

detailed description

 The present invention designs a physical downlink control channel dedicated to an MTC terminal, and allocates a dedicated physical downlink control channel to the MTC on the original LTE carrier. The invention will be described in detail below with reference to the accompanying drawings.

 As shown in FIG. 2, the embodiment of the communication method of the machine terminal of the present invention includes the following steps:

Step 202: The base station (eNB) generates an MIB including physical downlink control channel configuration information. The physical downlink control channel is a physical downlink control channel dedicated to machine type communication. For example, the physical downlink control channel occupies the Xth subframe in the time domain. The kth to k+y symbols occupy z subcarriers in the frequency domain, and information such as x, k, y, z needs to be transmitted through the MIB of the carrier, and is new in the MIB. The information such as x, k, y, and z is added, and the MIB can also carry information such as the system frame number that the physical downlink control channel will appear.

 Specifically, the main ways to add information to the MIB are:

 (a) adding a plurality of bits indicating the configuration information to the MIB, and displaying the start (or end) position of the subcarriers occupied by the physical downlink control channel to the MTC terminal;

 For example, 10 bits are used to represent this information. First, the possible values are matched with different bits. The matching result is known to the MTC terminal and the base station. For example, the value of X may be 3 and 7, then 1 bit may be used to represent the value of X, and 1 represents x= 3, 0 represents x=7;

 (b) calculating a parameter corresponding to the configuration information according to the preset correspondence, adding the parameter to the MIB, implying the x, y, z, and k and the subcarrier occupied by the physical downlink control channel The start (or end) position informs the MTC terminal;

 Since the MIB reserved bits are small, in addition to displaying the notification, it can also be transmitted in an implicit manner to achieve the purpose of saving bits;

 For example, only one value R is transmitted in the MIB, and the MTC terminal side calculates information such as x, y, z, and k and the start (or end) position of the subcarrier occupied by the physical downlink control channel by using the R value. For example, x=( R mod 2 ) +3 , k=4, y=R, z= ( R mod 7 ), and the start and end positions of the occupied carrier may be the middlemost subcarrier of the carrier (if the middle If it is two subcarriers, the one with the lowest frequency starts to take a total of z carriers;

 (c) setting a corresponding identifier for the plurality of sets of configuration information, adding the identifier to the MIB, for example, presetting a configuration information table, in which the values of x, k, y, and z are already in each group of configuration information in the table. It is determined that each group of configuration information corresponds to an identifier, and the configuration information table is stored in the base station and the MTC terminal, and an identifier is transmitted in the MIB, and the MTC terminal can find the configuration information of the corresponding group by using the identifier.

In addition, in addition to carrying the control channel related information through the primary system information, the start (or end) position of the subcarriers occupied by x, y, z, k and the physical control channel and the control channel may be agreed in a predetermined manner. Information such as the system frame number that appears is stored in the base station and the MTC terminal. Step 204: The base station sends the MIB to the MTC terminal. Step 206: The MTC terminal parses the MIB to obtain physical downlink control channel configuration information, and the MTC terminal parses the MIB according to several manners of adding information in the MIB.

 Step 208: The base station sends downlink control information on the physical downlink control channel, and the MTC terminal receives the downlink control information carried by the physical downlink control channel on the physical downlink control channel.

 In the network terminal communication method of the embodiment, the base station sends the downlink control information to the physical downlink control channel according to the configuration information, and the MTC terminal can send the downlink control information to the physical downlink control channel according to the configuration information. Some symbols of some subframes in some system frames appear, and at the same time, a part of the carrier bandwidth can be flexibly occupied, that is, part of the subcarriers are occupied. In this way, the mixing of the physical downlink control channels is avoided, and the resource utilization is improved. The MTC terminal only collects downlink control information on the bandwidth of the working carrier, so that the MTC terminal and the common commercial terminal share the carrier, and the MTC terminal does not need to be improved. The RF transceiver capability reduces the cost of the MTC terminal.

 In addition, the physical downlink control channel configuration information transmitted by the MIB has higher flexibility, and the base station can achieve performance gain by flexibly scheduling the time-frequency position of the physical downlink control channel and the size of the occupied resources.

 As shown in FIG. 3, based on the same inventive concept, the present invention further provides a base station embodiment, including: a generating module 31, configured to generate an MIB that includes physical downlink control channel configuration information;

 The sending module 32 is configured to send the MIB to the MTC terminal.

 The generating module 31 is configured to add a plurality of bits indicating the configuration information to the MIB, or calculate a parameter corresponding to the configuration information according to a preset correspondence, and add the parameter to the MIB. Or set a corresponding identifier for the plurality of sets of configuration information, and add the identifier to the MIB.

 The configuration information includes: subframe information where the physical downlink control channel is located, location information of the physical downlink control channel in the time domain, and location information of the physical downlink control channel in the frequency domain.

 The configuration information further includes: a system frame number of the physical downlink control channel.

In this embodiment, the base station sends the MIB including the physical downlink control channel configuration information to the MTC terminal, so that the terminal can receive the downlink control information on the physical downlink control channel according to the configuration information. In this way, the mixing of the physical downlink control channels is avoided, and the resource utilization is improved, so that the MTC terminal only collects downlink control information on the bandwidth of the working carrier, thereby implementing the MTC terminal and The common commercial terminal has a common carrier, and does not need to improve the radio frequency transceiver capability of the MTC terminal, thereby reducing the cost of the MTC terminal. In addition, the physical downlink control channel configuration information transmitted by the MIB has higher flexibility, and the network side can achieve performance gain by flexibly scheduling the time-frequency location of the physical downlink control channel and the size of the occupied resources.

 As shown in FIG. 4, based on the same inventive concept, the present invention further provides an MTC terminal embodiment including:

 The receiving module 41 is configured to receive the MIB;

 The parsing module 42 is configured to parse the configuration information of the physical downlink control channel from the MIB, and the receiving module 41 is further configured to receive, according to the configuration information, the downlink that is carried by the physical downlink control channel on the corresponding physical downlink control channel. Control information.

 The configuration information includes: subframe information where the physical downlink control channel is located, location information of the physical downlink control channel in the time domain, and location information of the physical downlink control channel in the frequency domain.

 The configuration information further includes: a system frame number of the physical downlink control channel.

 The parsing module 42 is configured to directly obtain configuration information of the physical downlink control channel according to multiple bits in the MIB.

 Or calculating, according to a parameter in the MIB, configuration information of the physical downlink control channel according to a pre-agreed relationship between the parameter and the configuration information;

 Or configured to use configuration information preset in the MIB as configuration information of the physical downlink control channel;

 Or, according to the identifier in the MIB, selecting a group of configuration information corresponding to the identifier from the pre-agreed group configuration information as the configuration information of the physical downlink control channel.

 In this embodiment, the base station sends the MIB including the physical downlink control channel configuration information to the terminal, so that the terminal can receive the downlink control information on the physical downlink control channel according to the configuration information. In this way, the mixing of the physical downlink control channels is avoided, the resource utilization is improved, and the MTC terminal only receives the downlink control information on the bandwidth of the working carrier, so that the MTC terminal and the common commercial terminal are co-carriers, and the MTC terminal does not need to be improved. The RF transceiver capability reduces the cost of the MTC terminal.

As shown in FIG. 2, based on the same inventive concept, the present invention further provides a machine type communication system embodiment including: The base station 30 is configured to generate an MIB that includes physical downlink control channel configuration information, send the MIB to the terminal, and send downlink control information carried by the physical downlink control channel on the physical downlink control channel.

 The MTC terminal 40 parses the configuration information of the physical downlink control channel from the received MIB, and receives the downlink control information on the corresponding physical downlink control channel according to the configuration information.

 In the system of this embodiment, the base station sends the MIB including the physical downlink control channel configuration information to the terminal, so that the terminal can receive the downlink control information on the corresponding physical downlink control channel according to the configuration information. In this way, the mixing of the physical downlink control channels is avoided, and the resource utilization is improved. The MTC terminal only collects the downlink control information on the bandwidth of the working carrier, so that the MTC terminal and the common commercial terminal share the carrier, and the MTC terminal does not need to be improved. The RF transceiver capability reduces the cost of the MTC terminal. In addition, the physical downlink control channel configuration information transmitted through the MIB has higher flexibility, and the network side can achieve performance gain by flexibly scheduling the time-frequency location of the physical downlink control channel and the size of the occupied resources.

 The present invention can also pre-set a physical downlink control channel dedicated to machine type communication, and the base station transmits downlink control information to the MTC terminal through a physical downlink control channel dedicated to machine type communication. The dedicated physical downlink control channel is a physical downlink control channel dedicated to machine type communication.

 The MTC terminal of the present invention comprises: a receiving module, configured to receive downlink control information on a physical downlink control channel dedicated to machine type communication.

 The base station of the present invention includes: a sending module, configured to send downlink control information on a physical downlink control channel dedicated to machine type communication.

 The machine type communication system of the present invention comprises: a base station, configured to send downlink control information on a physical downlink control channel dedicated to machine type communication; and an MTC terminal, configured to receive downlink on a physical downlink control channel dedicated to machine type communication Control information.

 By setting a physical downlink control channel dedicated to machine type communication, the invention avoids the mixing of the physical downlink control channels, improves the resource utilization, and realizes that the MTC terminal only collects downlink control information on the bandwidth of the working carrier, thereby implementing the MTC terminal and The common commercial terminal has a common carrier, and does not need to improve the radio frequency transceiver capability of the MTC terminal, thereby reducing the cost of the MTC terminal.

It should be noted that the above embodiments are merely illustrative of the present invention and are not intended to be limiting, and the present invention is not limited to the above examples, and all the technical solutions and improvements thereof without departing from the spirit and scope of the present invention should be It is intended to cover the scope of the claims of the invention.

Claims

Rights request

 A machine type communication method, characterized in that it comprises:

 The configuration information of the physical downlink control channel is parsed from the received primary system information MIB; and the downlink control information carried by the physical downlink control channel is received on the corresponding physical downlink control channel according to the configuration information.

 2. The machine type communication method according to claim 1, wherein the physical downlink control channel is a physical downlink control channel dedicated to machine type communication.

 The device type communication method according to claim 2, wherein the configuration information comprises: subframe information in which the physical downlink control channel is located, location information of the physical downlink control channel in a time domain, and Location information of the physical downlink control channel in the frequency domain.

 The device type communication method according to claim 3, wherein the configuration information further comprises: a system frame number of the physical downlink control channel.

 The device type communication method according to any one of claims 1 to 4, wherein the parsing the configuration information of the physical downlink control channel from the MIB comprises:

 Obtaining the configuration information of the physical downlink control channel according to the multiple bits in the MIB; or calculating the physical downlink control channel according to the pre-agreed relationship between the parameter and the configuration information according to the parameter in the MIB. Configuration information;

 Or the configuration information preset in the MIB is used as configuration information of the physical downlink control channel;

 Or, according to the identifier in the MIB, the configuration information corresponding to the identifier is selected from the pre-agreed group configuration information as the configuration information of the physical downlink control channel.

 6. A machine type communication method, comprising:

 Generating a primary system information MIB including physical downlink control channel configuration information;

 The MIB is sent to the MTC terminal.

 7. Machine type communication according to claim 6, wherein the physical downlink control channel is a physical downlink control channel dedicated to machine type communication.

 The device type communication method according to claim 7, wherein the configuration information comprises: subframe information in which the physical downlink control channel is located, location information of the physical downlink control channel in a time domain, and Location information of the physical downlink control channel in the frequency domain.

The device type communication method according to claim 8, wherein the configuration information further comprises: a system frame number of the physical downlink control channel.

The device type communication method according to claim 8 or 9, wherein the generating the MIB including the physical downlink control channel configuration information comprises:

 Adding a plurality of bits indicating the configuration information to the MIB;

 Or calculating a parameter corresponding to the configuration information according to the preset correspondence, and adding the parameter to the MIB;

 Alternatively, a corresponding identifier is set for the multiple sets of configuration information, and the identifier is added to the MIB.

11. A machine type communication method, comprising:

 The base station transmits downlink control information to the MTC terminal through a physical downlink control channel dedicated to machine type communication.

 12. An MTC terminal, comprising:

 a receiving module, configured to receive the MIB;

 a parsing module, configured to parse the configuration information of the physical downlink control channel from the MIB; the receiving module, configured to receive downlink control of the physical downlink control channel bearer on the corresponding physical downlink control channel according to the configuration information information.

 The MTC terminal according to claim 12, wherein the configuration information includes: subframe information in which the physical downlink control channel is located, location information of the physical downlink control channel in a time domain, and the The location information of the physical downlink control channel in the frequency domain.

 The MTC terminal according to claim 13, wherein the configuration information further includes: a system frame number of the physical downlink control channel.

 The MTC terminal according to any one of claims 12 to 14, wherein the parsing module is configured to obtain configuration information of the physical downlink control channel according to multiple bits in the MIB;

 Or, configured to calculate configuration information of the physical downlink control channel according to a pre-agreed relationship between the parameter and the configuration information according to the parameter in the MIB;

 Or, configured to use configuration information preset in the MIB as configuration information of the physical downlink control channel;

 Or, configured to select, according to the identifier in the MIB, the configuration information corresponding to the identifier from the pre-agreed group configuration information as the configuration information of the physical downlink control channel.

 16. A base station, comprising:

a generating module, configured to generate a primary system information MIB that includes physical downlink control channel configuration information, and a sending module, configured to send the MIB to the MTC terminal.

The base station according to claim 18, wherein the configuration information includes: subframe information in which the physical downlink control channel is located, location information of the physical downlink control channel in a time domain, and the physical The position information of the downlink control channel in the frequency domain.

 The base station according to claim 17, wherein the configuration information further includes: a system frame number of the physical downlink control channel.

 The base station according to any one of claims 16 to 18, wherein the generating module is configured to add a plurality of bits indicating the configuration information to the MIB;

 Or calculating a parameter corresponding to the configuration information according to the preset correspondence, and adding the parameter to the MIB;

 Alternatively, a corresponding identifier is set for the multiple sets of configuration information, and the identifier is added to the MIB.

20. An MTC terminal, comprising:

 And a receiving module, configured to receive downlink control information on a physical downlink control channel dedicated to machine type communication.

 A base station, comprising:

 And a sending module, configured to send downlink control information on a physical downlink control channel dedicated to machine type communication.

 22. A machine type communication system, comprising:

 a base station, configured to generate an MIB that includes physical downlink control channel configuration information, send the MIB to an MTC terminal, and send downlink control information carried by the physical downlink control channel on the physical downlink control channel;

 The MTC terminal is configured to parse the configuration information of the physical downlink control channel from the received MIB, and receive the downlink control information on the corresponding physical downlink control channel according to the configuration information.

 23. A machine type communication system, comprising:

 The base station is configured to send downlink control information on a physical downlink control channel dedicated to machine type communication; and the MTC terminal is configured to receive downlink control information on a physical downlink control channel dedicated to machine type communication.