CN110418312B

CN110418312B - Method and device for indicating transmitting power

Info

Publication number: CN110418312B
Application number: CN201810404789.5A
Authority: CN
Inventors: 曾勇波; 才宇; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2021-04-20
Anticipated expiration: 2038-04-28
Also published as: CN110418312A; WO2019206327A1

Abstract

The present application provides a method and device for indicating transmit power, which are used by a remote device to obtain the transmit power of a discovery signal through transmit power indication information sent by a relay device, so as to estimate the path loss by using the transmit power, thereby realizing power control. The method of the embodiment of the present application includes: the relay device generates transmit power indication information of the discovery signal; the relay device sends the transmit power indication information to the remote device, so that the remote device obtains the transmit power of the discovery signal according to the transmit power indication information.

Description

Method and device for indicating transmitting power

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for indicating transmit power.

Background

Device-to-Device (D2D) technologies defined by R12(Release 12, 12 th edition) and R13(Release 13, 13 th edition) of the third Generation Partnership Project (3 GPP) are technologies for direct communication between devices, messages and corresponding control information can be directly transmitted between two devices without going through a base station, D2D of R12/R13 is mainly public safety oriented application, broadcasting and multicasting are main communication modes, and a typical application scenario is that information is directly transmitted and received between a terminal and a terminal through a bypass link (Sidelink) (or referred to as a direct link). R15(Release 15, 15 th edition) starts the research of the task of the continued evolution of D2D (futher enhancement on D2D, FeD2D), and a typical application scenario is a terminal-to-Network Relay (UE-to-Network Relay) scenario, that is, data and control information between a base station (eNB) and a Remote terminal (Remote UE) are relayed through a Relay terminal (Relay UE). One of the main purposes of the UE-to-Network Relay scenario is to reduce the power consumption of the Remote UE, power control is an important way, and the primary problem of power control is to estimate the path loss accurately, and further to indicate the transmission power of the reference signal.

In the current scheme, namely in the Sidelink technology of R12-R14, if a UE is in the coverage of an eNB, the transmission power of a Sidelink signal transmitted by the UE is determined according to the propagation path loss of a downlink between the UE and the eNB, and a power control parameter is obtained from the eNB; the UE may transmit the sildenk signal with a standard predefined maximum transmit power if the UE is out of coverage of the eNB.

However, in the current Sidelink technology, the Sidelink signals are all transmitted in a broadcast manner, there is no clear receiving end, and the purpose of power control is to avoid causing interference to the cellular uplink signals or avoiding exceeding the maximum transmitting power of the terminal, so the transmitting power of the Sidelink signals cannot be indicated, and the receiving end cannot estimate the propagation path loss between the transmitting end and the receiving end, so the power control of the Sidelink signals in the UE-to-Network Relay scene cannot be realized.

Disclosure of Invention

The application provides an indication method and equipment of transmission power, which are used for a remote device to acquire the transmission power of a discovery signal through transmission power indication information sent by relay equipment, so that the path loss is estimated by using the transmission power, and further, the power control is realized.

A first aspect of the present application provides a method for indicating radio power, including: the relay equipment generates transmission power indication information according to the transmission power of the discovery signal; the relay equipment sends the transmission power indication information to the remote equipment, so that the remote equipment obtains the transmission power of the discovery signal according to the transmission power indication information. The Relay device sends the transmission power indication information for indicating the transmission power of the discovery signal to the remote device, and the remote device can obtain the transmission power of the discovery signal through the transmission power indication information.

With reference to the first aspect of the present application, in a first possible implementation manner, the generating, by the relay device, the transmission power indication information by using a mask of the demodulation reference signal, and the generating, by the relay device, the transmission power indication information according to the transmission power of the discovery signal includes: the relay equipment acquires the transmitting power of the discovery signal; the relay equipment determines a mask sequence corresponding to the transmitting power according to a preset mapping table, wherein the preset mapping table comprises a one-to-one mapping relation of at least one transmitting power and at least one mask sequence; the relay device generates a demodulation reference signal of the discovery signal according to the mask sequence. In a UE-to-Network Relay scenario, a message and corresponding control information may be directly sent between a Relay device and a remote device without passing through a base station, a PSDCH that has been defined is used for the Relay device to broadcast a discovery signal, which may also be referred to as a discovery message, and a scenario of a remote terminal that supports a bandwidth of 1 PRB is considered, at this time, the bandwidth of the discovery signal also needs to be reduced from the current 2 PRBs to 1 PRB, in order to keep a code rate unchanged under a condition that a message content of the discovery signal is unchanged, the discovery signal needs to be extended from the current 1 subframe to 2 subframes, and when the Relay device generates the discovery signal, transmission power for transmitting the discovery signal is already configured. After the discovery signal is subjected to time domain spreading, the DMRS symbols are added, the transmission power of the discovery signal is indicated by using an orthogonal mask on the added DMRS symbols, where the orthogonal mask of the DMRS is obtained by multiplying a frequency domain sequence of each DMRS symbol by a value (1 or-1), mask sequences of the orthogonal masks of two DMRS symbols may be (1,1) and (1, -1), and the orthogonal mask is originally used to reduce interference between the DMRS symbols, but in a relay scenario, a relay device may schedule resources used by the discovery signal by itself, and a remote device is not available, so that a manner of reducing interference by using the randomized orthogonal mask is not significant in the relay scenario, and thus, limited several kinds of power indication information may be carried by using the orthogonal masks. Then a mask sequence corresponding to the transmission power is determined through a preset mapping table, and a demodulation reference signal of the discovery signal is generated according to the mask sequence.

With reference to the first possible implementation manner of the first aspect of the present application, in a second possible implementation manner, the sending, by the relay device, the transmission power indication information to the remote device includes: the relay device transmits a discovery signal including a demodulation reference signal to the remote device. After the relay device generates the demodulation reference signal of the discovery signal according to the mask sequence, the relay device transmits the discovery signal to the remote device through the PSDCH.

With reference to the first aspect of the present application, in a third possible implementation manner, the transmit power indication information includes reference power information and a power offset value represented by a mask of a demodulation reference signal, and the generating, by the relay device, the transmit power indication information according to the transmit power of the discovery signal includes: the relay equipment determines reference transmission power and a power offset value of the discovery signal, wherein the power offset value is power offset generated on the basis of the reference transmission power when the relay equipment transmits the discovery signal; the relay equipment generates reference power information in a bypass main information block according to the reference transmitting power; the relay equipment determines a mask sequence corresponding to the power deviation value according to a preset mapping table, wherein the preset mapping table comprises a one-to-one mapping relation of at least one power deviation value and at least one mask sequence; the relay device generates a demodulation reference signal of the discovery signal according to the mask sequence.

With reference to the third possible implementation manner of the first aspect of the present application, in a fourth possible implementation manner, the sending, by the relay device, the transmission power indication information to the remote device includes: the relay device transmits a bypass master information block including reference power information and a discovery signal including a demodulation reference signal to the remote device. The relay device sends the bypass main information block including the reference power information to the remote device through the PSBCH, sends the discovery signal including the demodulation reference signal to the remote device through the PSDCH, and the remote device acquires the bypass main information block and the discovery signal through the PSBCH and the PSDCH respectively.

A second aspect of the present application provides a method for indicating transmit power, including: the remote equipment receives transmission power indication information sent by the relay equipment, wherein the transmission power indication information is used for indicating the transmission power of the discovery signal; the remote device obtains the transmission power of the discovery signal according to the transmission power indication information. The remote device receives the transmission power indication information which is sent by the Relay device and used for indicating the discovery signal, and obtains the transmission power of the discovery signal according to the transmission power indication information, so that when the discovery signal is received, the transmission power when the discovery signal is sent by the Relay device can be subtracted by the received signal strength when the discovery signal is received by the remote device, and the propagation path loss between the remote device and the Relay device is obtained, so that the power control under the UE-to-Network Relay scene can be realized.

With reference to the second aspect of the present application, in a first possible implementation manner, the method for indicating transmission power by a remote device to receive transmission power indication information sent by a relay device includes: the remote equipment receives a discovery signal sent by the relay equipment; the far-end equipment analyzes the discovery signal to obtain a mask of the demodulation reference signal. If the transmission power indication information is represented by the mask of the demodulation reference signal, the far-end device analyzes the discovery signal to obtain the mask of the demodulation reference signal after receiving the discovery signal sent by the relay device.

With reference to the first possible implementation manner of the second aspect of the present application, in a second possible implementation manner, the obtaining, by the remote device, the transmission power of the discovery signal according to the transmission power indication information includes: the remote equipment obtains a mask sequence according to the mask of the demodulation reference signal; the remote device determines the transmitting power of the discovery signal according to a preset mapping table and the mask sequence, wherein the preset mapping table comprises a one-to-one mapping relation between at least one transmitting power and at least one mask sequence. The remote device obtains a mask sequence according to the mask of the demodulation reference signal, and then determines the transmitting power of the discovery signal according to a preset mapping table and the mask sequence, wherein the preset mapping table comprises a one-to-one mapping relation of at least one transmitting power and at least one mask sequence, and the preset mapping table used by the relay device and the remote device is the same.

With reference to the second aspect of the present application, in a third possible implementation manner, the transmitting power indication information includes reference power information and a demodulation reference signal, and the receiving, by the remote device, the transmitting power indication information sent by the relay device includes: the remote equipment receives a discovery signal and a bypass main information block sent by the relay equipment; the far-end equipment analyzes the discovery signal to obtain a demodulation reference signal, and analyzes the bypass main information block to obtain reference power information. If the power indication information comprises reference power information and a demodulation reference signal, the far-end equipment analyzes the discovery signal to obtain a mask of the demodulation reference signal after receiving the discovery signal and the bypass master information block sent by the relay equipment, and analyzes the bypass master information block to obtain the reference power information.

With reference to the third possible implementation manner of the second aspect of the present application, in a fourth possible implementation manner, the obtaining, by the remote device, the transmission power of the discovery signal according to the transmission power indication information includes: the remote equipment determines the reference transmitting power of the discovery signal according to the reference power information; the remote equipment obtains a mask sequence according to the mask of the demodulation reference signal; the remote equipment determines a power deviation value of the discovery signal according to a preset mapping table and the mask sequence, wherein the preset mapping table comprises a one-to-one mapping relation of at least one power deviation value and at least one mask sequence; and the remote equipment calculates the transmitting power of the discovery signal according to the reference transmitting power and the power deviation value. The remote device determines reference transmitting power of the discovery signal according to the reference power information, obtains a mask sequence according to a mask of the demodulation reference signal, determines a power deviation value of the discovery signal according to a preset mapping table and the mask sequence, the preset mapping table comprises a one-to-one mapping relation of at least one power deviation value and at least one mask sequence, and calculates the transmitting power of the discovery signal according to the reference transmitting power and the power deviation value.

The third aspect of the application provides a relay device, which comprises a processing module, a transmitting module and a receiving module, wherein the processing module is used for generating transmitting power indication information of a discovery signal; and the sending module is used for sending the transmission power indication information to the remote equipment, so that the remote equipment acquires the transmission power of the discovery signal according to the transmission power indication information. The sending module sends the transmission power indication information which is generated by the processing module and used for indicating the transmission power of the discovery signal to the remote equipment, and the remote equipment can obtain the transmission power of the discovery signal through the transmission power indication information.

With reference to the third aspect of the present application, in a first possible implementation manner, the transmission power indication information is represented by a mask of a demodulation reference signal, and the processing module is specifically configured to determine the transmission power of the discovery signal; the processing module is further used for determining a mask sequence corresponding to the transmitting power according to a preset mapping table, and the preset mapping table comprises a one-to-one mapping relation between at least one transmitting power and at least one mask sequence; and the processing module is further used for generating a demodulation reference signal of the discovery signal according to the mask sequence. In a UE-to-Network Relay scenario, a message and corresponding control information may be directly sent between a Relay device and a Remote device without passing through a base station, a PSDCH that has been defined is used for the Relay device to broadcast and send a discovery signal, which may also be referred to as a discovery message, a scenario of a Remote terminal (Remote UE) that supports a bandwidth of 1 PRB is considered, at this time, the bandwidth of the discovery signal also needs to be reduced from the current 2 PRBs to 1 PRB, in order to keep a code rate unchanged under a condition that a message content of the discovery signal is unchanged, the discovery signal needs to be extended from the current 1 subframe to 2 subframes, and when the Relay device generates the discovery signal, a transmission power for sending the discovery signal is configured. After the discovery signal is subjected to time domain spreading, the DMRS symbols are added, the transmission power of the discovery signal is indicated by using an orthogonal mask on the added DMRS symbols, where the orthogonal mask of the DMRS is obtained by multiplying a frequency domain sequence of each DMRS symbol by a value (1 or-1), mask sequences of the orthogonal masks of two DMRS symbols may be (1,1) and (1, -1), and the orthogonal mask is originally used to reduce interference between the DMRS symbols, but in a relay scenario, a relay device may schedule resources used by the discovery signal by itself, and a remote device is not available, so that a manner of reducing interference by using the randomized orthogonal mask is not significant in the relay scenario, and thus, limited several kinds of power indication information may be carried by using the orthogonal masks. The processing module determines a mask sequence corresponding to the transmission power through a preset mapping table, and the processing module generates a demodulation reference signal of the discovery signal according to the mask sequence.

With reference to the first possible implementation manner of the third aspect of the present application, in a second possible implementation manner, the sending module is specifically configured to send the discovery signal including the demodulation reference signal to the remote device. After the processing module generates the demodulation reference signal of the discovery signal according to the mask sequence, the transmitting module transmits the discovery signal to the remote device through the PSDCH.

With reference to the third aspect of the present application, in a third possible implementation manner, the transmission power indication information includes reference power information and a power offset value represented by a mask of a demodulation reference signal, and the processing module is specifically configured to determine a reference transmission power and a power offset value of the discovery signal, where the power offset value is a power offset generated on the basis of the reference transmission power when the relay device transmits the discovery signal; the processing module is also used for generating reference power information in the bypass main information block according to the reference transmitting power; the processing module is further used for determining a mask sequence corresponding to the power deviation value according to a preset mapping table, and the preset mapping table comprises a one-to-one mapping relation between at least one power deviation value and at least one mask sequence; and the processing module is further used for generating a demodulation reference signal of the discovery signal according to the mask sequence. When the processing module generates the discovery signal, the reference transmission power for transmitting the discovery signal is already configured, but when the discovery signal is actually transmitted, a power offset may be generated based on the reference transmission power, and the amount of generating the power offset is expressed by a power offset value. The processing module represents the reference power information by a field of an information field in the MIB-SL, determines a mask sequence corresponding to the power offset value according to a preset mapping table, and generates a demodulation reference signal of the discovery signal according to the mask sequence.

With reference to the third possible implementation manner of the third aspect of the present application, in a fourth possible implementation manner, the sending module is specifically configured to send the bypass master information block including the reference power information and the discovery signal including the demodulation reference signal to the remote device. The sending module sends the bypass main information block including the reference power information to the remote device through the PSBCH, sends the discovery signal including the demodulation reference signal to the remote device through the PSDCH, and the remote device acquires the bypass main information block and the discovery signal through the PSBCH and the PSDCH respectively.

A fourth aspect of the present application provides a remote device, comprising: a receiving module, configured to receive transmit power indication information sent by a relay device, where the transmit power indication information is used to indicate transmit power of a discovery signal; and the processing module is used for obtaining the transmitting power of the discovery signal according to the transmitting power indication information. The receiving module receives transmission power indication information which is used for indicating a discovery signal and sent by the Relay equipment, and the processing module acquires the transmission power of the discovery signal according to the transmission power indication information, so that when the receiving module receives the discovery signal, the transmission power of the Relay equipment when sending the discovery signal can be subtracted by the received signal strength of the receiving module when receiving the discovery signal, and the propagation path loss between the remote equipment and the Relay equipment is obtained, so that the power control under the UE-to-Network Relay scene can be realized.

With reference to the fourth aspect of the present application, in a first possible implementation manner, the transmission power indication information is represented by a mask of a demodulation reference signal, and the receiving module is specifically configured to receive a discovery signal sent by a relay device; and the processing module is further used for analyzing the discovery signal to obtain a mask of the demodulation reference signal. If the power indication information is represented by a mask of the demodulation reference signal, after the receiving module receives the discovery signal sent by the relay device, the processing module analyzes the discovery signal to obtain the mask of the demodulation reference signal.

With reference to the first possible implementation manner of the fourth aspect of the present application, in a second possible implementation manner, the processing module is further configured to obtain a mask sequence according to a mask of the demodulation reference signal; the processing module is further configured to determine the transmission power of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one transmission power and at least one mask sequence. The processing module obtains a mask sequence according to the mask of the demodulation reference signal, and then determines the transmitting power of the discovery signal according to a preset mapping table and the mask sequence, wherein the preset mapping table comprises a one-to-one mapping relation of at least one transmitting power and at least one mask sequence, and the relay device is the same as the preset mapping table used by the processing module.

With reference to the fourth aspect of the present application, in a third possible implementation manner, the transmission power indication information includes reference power information and a power offset value represented by a mask of a demodulation reference signal, and the receiving module is specifically configured to receive a discovery signal and a bypass master information block sent by the relay device; and the processing module is also used for analyzing the discovery signal to obtain a mask of the demodulation reference signal and analyzing the bypass main information block to obtain reference power information. If the power indication information comprises reference power information and a mask of a demodulation reference signal, after the receiving module receives a discovery signal and a bypass master information block sent by the relay equipment, the processing module analyzes the discovery signal to obtain the mask of the demodulation reference signal, and analyzes the bypass master information block to obtain the reference power information.

With reference to the third possible implementation manner of the fourth aspect of the present application, in a fourth possible implementation manner, the processing module is further configured to determine a reference transmission power of the discovery signal according to the reference power information; the processing module is further used for obtaining a mask sequence according to the mask of the demodulation reference signal; the processing module is further configured to determine a power offset value of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one power offset value and at least one mask sequence; and the processing module is further used for calculating the transmission power of the discovery signal according to the reference transmission power and the power deviation value. The processing module determines reference transmitting power of the discovery signal according to the reference power information, obtains a mask sequence according to a mask of the demodulation reference signal, determines a power deviation value of the discovery signal according to a preset mapping table and the mask sequence, the preset mapping table comprises a one-to-one mapping relation of at least one power deviation value and at least one mask sequence, and calculates the transmitting power of the discovery signal according to the reference transmitting power and the power deviation value.

A fifth aspect of the present application provides a relay apparatus, including: the transceiver and the at least one processor are interconnected through a line, and the transceiver is used for performing information transceiving operation on the relay device side in any implementation manner of the first aspect;

the at least one processor performs information processing or control operations performed on the relay device side in any implementation of the first aspect.

A sixth aspect of the present application is a remote device, comprising: the transceiver and the at least one processor are interconnected through a line, and the transceiver is used for performing the operation of information transceiving on the far-end equipment side in any implementation manner of the second aspect;

the at least one processor performs information processing or control operations performed on the relay device side in any implementation manner of the second aspect.

A seventh aspect of the present application provides a computer-readable storage medium, which is applied in a relay device, and has instructions stored therein, when the instructions are executed on a computer, the computer is enabled to perform the operations of the relay device in any implementation manner of the first aspect.

An eighth aspect of the present application provides a computer-readable storage medium, which is applied in a relay device, and has instructions stored therein, when the instructions are executed on a computer, the computer is enabled to perform the operations of a remote device in any implementation manner of the second aspect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments and the prior art will be briefly described below.

FIG. 1 is a schematic diagram of a bidirectional relay mode architecture;

FIG. 2 is a block diagram of a uni-directional relay mode;

fig. 3 is a flowchart illustrating an embodiment of a method for indicating transmit power provided herein;

fig. 4 is a schematic flowchart of another embodiment of a method for indicating transmit power provided herein;

fig. 5 is a schematic diagram of a mask of a demodulation reference signal using an entire mask sequence according to the present application;

fig. 6 is a schematic diagram of a mask of a demodulation reference signal using a partial mask sequence according to the present application;

fig. 7 is a schematic flowchart of another embodiment of a method for indicating transmit power provided herein;

fig. 8 is a schematic structural diagram of an embodiment of a relay device provided in the present application;

FIG. 9 is a schematic block diagram illustrating one embodiment of a remote device provided herein;

fig. 10 is a schematic structural diagram of another embodiment of a relay device provided in the present application.

Detailed Description

The terms "upstream" and "downstream" appearing in the present application are used in some scenarios to describe the direction of data/information transmission, for example, the "upstream" direction is the direction of data/information transmission from the terminal device to the network side, the "downstream" direction is the direction of data/information transmission from the network side device to the terminal device, the "upstream" and "downstream" are used only to describe the direction, and the specific devices from which the data/information transmission starts and ends are not limited.

The term "and/or" appearing in the present application may be an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/flows/concepts may be named in the present application, but these specific names do not constitute limitations on related objects, and the named names may vary with factors such as scenes, contexts or usage habits, and understanding of technical meaning of related objects should be mainly determined from functions and technical effects embodied/executed in the technical solutions.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps appearing in the present application does not mean that the steps in the method flow have to be executed in the chronological/logical order indicated by the naming or numbering, and the named or numbered process steps may be executed in a modified order depending on the technical purpose to be achieved, as long as the same or similar technical effects are achieved. The division of the modules presented in this application is a logical division, and in practical applications, there may be another division, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed, and in addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, and the indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.

The terminal in this document includes all terminals supporting the Sidelink technology or the direct communication technology, the network side device includes, but is not limited to, eNB in LTE and gNB in 5G, and eNB in this document may also be replaced by gNB. For convenience of understanding, the eNB is described as an example in the embodiment. The method is applicable to LTE, 5G and future communication systems.

First, a system architecture or scenario in which the present application is applied will be briefly described.

In the application, the D2D technology defined by R12 and R13 of 3GPP is a technology for direct communication between devices (a device includes all terminals supporting the D2D technology, and if no specific description is given, the present invention does not distinguish between the device and the terminal), and a message and corresponding control information can be directly sent between two devices without passing through a base station (eNB) in a UE-to-Network Relay scenario. D2D of R12/R13 is mainly for public safety oriented applications, and Broadcast and multicast are main communication modes, and defines a Physical bypass Broadcast Channel (PSBCH) for transmitting Broadcast messages, a Physical bypass Discovery Channel (PSDCH) for transmitting Discovery messages (Discovery Message), a Physical bypass Control Channel (PSCCH) for transmitting bypass Control Information (SCI), which may also be referred to as Scheduling indication (SA), a Physical bypass shared Channel (PSCCH) for transmitting data, and a bypass Primary Synchronization Signal (pss) and a bypass Synchronization Signal (SSSS). R14V2X (Vehicle to event) enhances the channel structure and signals based on D2D to support high moving speed Vehicle to Vehicle (V2V) traffic. Control information and traffic data transmitted by a device or terminal are transmitted on the PSCCH and PSCCH, respectively, and the traffic data is indicated by the control information. The communication between the devices is realized in a broadcast mode, that is, the receiving device or the terminal acquires the service data of the sending terminal device by detecting and demodulating the control information and the service data broadcast by the sending terminal.

In the 3GPP RAN #71 conference, through a research project of the continuous evolution of D2D (futher Enhancement on D2D, FeD2D), a typical application scenario is a UE-to-Network Relay scenario, that is, data and control information between an eNB and a Remote terminal (Remote UE) are relayed through a Relay terminal or a Relay node (Relay UE), and a main purpose is to research a D2D technology supporting low-cost devices such as wearable devices, that is, how to apply the D2D technology to a scenario of low-cost devices. One of the objectives of research related to the physical layer is to identify some enhanced mechanisms of the sildelink, so that the sildelink can support QoS, reliability, low complexity/cost, low energy consumption, and the like.

In the current discussion of the FeD2D RAN1, there are two possible relay modes: as shown in fig. 1 and 2, in the Bidirectional Relay Mode of fig. 1, Relay UE may forward uplink and downlink signaling and data between eNB and Remote UE, that is, downlink signaling and data from eNB to Remote UE may be forwarded to Remote UE through Relay UE via sildelink, and uplink signaling and data from Remote UE to eNB may also be forwarded to eNB through Relay UE via uplink. In the unidirectional Relay mode shown in fig. 2, the Remote UE directly receives downlink signaling and data from the eNB, and the Relay UE only forwards uplink signaling and data from the Remote UE to the eNB.

One of the main purposes of UE-NW relaying is to reduce the power consumption of the remote terminal, power control being an important way. In TR36.746, it has been clarified that in the UE-to-Network Relay scenario, the transmission power control of the communication between the Relay UE and the Remote UE is based on the propagation path loss between the two, while the terminal-to-eNB propagation path loss is only used to calculate the maximum transmission power of the terminal. In addition, it is also clear that Sidelink suitable for 1 Physical Resource Block (PRB) of Internet of Things (IoT) scenario is to be supported, but enhancement needs to be performed on current discovery Signal, SLSS/psch (Sidelink Synchronization Signal, PSBCH) to support 1 PRB. Considering a scenario of a Remote UE supporting 1 PRB bandwidth, at this time, the bandwidth of the discovery signal also needs to be reduced from the current 2 PRBs to 1 PRB, and in order to keep the code rate unchanged, the discovery signal needs to be extended from the current 1 subframe to 2 subframes in order to keep the message content of the discovery signal unchanged.

In order to solve the problem of controlling the transmission power of a Sidelink signal during communication between Relay UE and Remote UE in a UE-to-Network Relay scene, the propagation path loss between the Relay UE and the Remote UE needs to be calculated. However, in the prior art, the discovery signal transmitted by the Relay UE is transmitted in a broadcast manner, and it is not explicitly indicated which Remote UE is the receiving end of the discovery signal, and the Relay UE cannot indicate the transmission power of the discovery signal for the Remote UE, so that the path loss cannot be calculated, and the power control cannot be realized. Therefore, it is critical for the Remote UE to acquire the transmission power of the discovery signal, and the following describes, by way of an embodiment, a method for indicating the transmission power applied to the UE-to-Network Relay scenario provided in the present application.

Referring to fig. 3, an embodiment of the present invention provides a method for indicating transmit power, including:

301. the relay equipment generates the transmission power indication information of the discovery signal;

in this embodiment, in a UE-to-Network Relay scenario, a message and corresponding control information may be directly sent between a Relay device and a remote device without going through a base station, and a defined PSDCH is used for the Relay device to broadcast a discovery signal, where the discovery signal may also be referred to as a discovery message. When the relay device generates the discovery signal, the transmission power of the discovery signal is determined, and transmission power indication information is generated according to the transmission power of the discovery signal, wherein the transmission power indication information is used for indicating the transmission power of the discovery signal.

302. The relay equipment sends the transmission power indication information to the remote equipment, and the remote equipment receives the transmission power indication information sent by the relay equipment;

in this embodiment, after the relay device generates the transmission power indication information, the transmission power indication information is sent to the remote device, and the remote device receives the transmission power indication information sent by the relay device.

303. The remote device obtains the transmission power of the discovery signal according to the transmission power indication information.

In this embodiment, after receiving the transmission Power indication information sent by the relay device, the remote device may obtain the transmission Power of the discovery Signal according to the transmission Power indication information, and then when the remote device receives the discovery Signal sent by the relay device through the PSDCH, the remote device may subtract the transmission Power when the relay device sends the discovery Signal by the Received Signal strength (for example, Reference Signal Received Power (RSRP)) when the remote device receives the discovery Signal, thereby obtaining the propagation path loss between the remote device and the relay device.

In the embodiment of the application, the Relay device sends the transmission power indication information for indicating the discovery signal to the remote device, and the remote device can obtain the transmission power of the discovery signal through the transmission power indication information, so that when the remote device receives the discovery signal, the transmission power of the Relay device when sending the discovery signal can be subtracted by the received signal strength of the remote device when receiving the discovery signal, so as to obtain the propagation path loss between the remote device and the Relay device, and the remote device or the Relay device can further determine the transmission power of the sildelink signal, thereby realizing power control in a UE-to-Network Relay scene.

In the embodiment shown in fig. 3, how to transmit the transmission power indication information from the relay device to the remote device is not specifically described, and the transmission power indication information may be specifically transmitted in the following ways: carrying power indication information by a mask of a Demodulation Reference Signal (DMRS) in a discovery Signal, where the mask of the Demodulation Reference Signal is a Code (or an Orthogonal Code) on a Demodulation Reference Signal (DMRS) symbol; and secondly, jointly carrying power indication Information through a mask of a demodulation reference signal in the discovery signal and a Master Information Block-Sidelink (MIB-SL) in the PSBCH.

The following describes different ways of transmitting the transmission power indication information by embodiments.

Carrying transmission power indication information through a mask of a demodulation reference signal in a discovery signal;

referring to fig. 4, an embodiment of the present invention provides a method for indicating transmit power, including:

401. the relay equipment determines the transmitting power of the discovery signal;

in this embodiment, in a UE-to-Network Relay scenario, a message and corresponding control information may be directly sent between a Relay device and a Remote device without going through a base station, a PSDCH that has been defined is used for the Relay device to broadcast a discovery signal, the discovery signal may also be referred to as a discovery message, a scenario of a Remote UE that supports a bandwidth of 1 PRB is considered, at this time, the bandwidth of the discovery signal also needs to be reduced from the current 2 PRBs to 1 PRB, in order to keep a code rate unchanged, the discovery signal needs to be extended from the current 1 subframe to 2 subframes, and when the Relay device generates the discovery signal, the Relay device already determines a transmission power of the discovery signal.

402. The relay equipment determines a mask sequence corresponding to the transmitting power according to a preset mapping table;

in this embodiment, after the discovery signal is subjected to time domain spreading, DMRS symbols are added, the transmission power of the discovery signal is indicated by using an orthogonal mask on the added DMRS symbols, where the orthogonal mask of the DMRS is obtained by multiplying a frequency domain sequence of each DMRS symbol by a value (1 or-1), mask sequences of orthogonal masks of two DMRS symbols may be (1,1) and (1, -1), and the orthogonal masks are originally used to reduce interference between the DMRS signals, but in a relay scenario, a relay device may schedule resources used by the discovery signal by itself, and a remote device is not available, so that a manner of reducing interference by using randomized orthogonal masks is not significant in the relay scenario, and thus, the orthogonal masks may be used to carry limited several kinds of power indication information. The transmission power may be indicated using all mask sequences, e.g., if the signal is found to have N DMRS symbols, the mask sequence length is N, the number Q of mask sequences is 2 or less^NEach sequence may represent a transmit power; alternatively, the transmit power may be indicated using a partial mask in a sequence of masks, e.g., ifThe discovery signal has N DMRS symbols, the mask is divided into two parts, and only one part of the mask is used for indicating the transmission power, wherein each part of the mask code sequence represents one transmission power. The preset mapping table includes a one-to-one mapping relationship of at least one transmission power and at least one mask sequence, for example, as shown in table 1 below,

TABLE 1

Therefore, according to the mapping relationship in table 1, the mask sequence can be determined according to the transmission power, specifically, the selection of the whole mask sequence or the partial mask sequence is not limited, the whole mask sequence can correspond to 16 different transmission powers at most, and the partial mask sequence can correspond to 4 different transmission powers at most.

403. The relay equipment generates a demodulation reference signal of the discovery signal according to the mask sequence;

in this embodiment, after the mask sequence has been determined, the relay device needs to generate a demodulation reference signal of the discovery signal according to the mask sequence, for example, the demodulation reference signal of the discovery signal transmitted by the relay device uses all the mask sequences [1,1,1, -1], which indicate that its transmission power is P1, and then the generated demodulation reference signal is as shown in fig. 5, and each symbol of the reference signal is sequentially multiplied by one bit of the mask sequence; the demodulation reference signal of the discovery signal transmitted by the relay device uses a partial mask sequence [1, -1], which indicates that its transmission power is P1, and then the generated demodulation reference signal is as shown in fig. 6, and each symbol of the reference signal is sequentially multiplied by one bit of the mask sequence.

404. The relay equipment transmits a discovery signal comprising a demodulation reference signal to the remote equipment, and the remote equipment receives the discovery signal transmitted by the relay equipment;

in this embodiment, the relay device sends the discovery signal to the remote device through the PSDCH, and the remote device receives the discovery signal sent by the relay device.

405. The remote equipment analyzes the discovery signal to obtain a mask of the demodulation reference signal;

in this embodiment, the remote device analyzes the discovery signal to obtain a mask of the demodulation reference signal.

406. The remote equipment obtains a mask sequence according to the mask of the demodulation reference signal;

in this embodiment, the remote device obtains a mask sequence according to the mask of the demodulation reference signal.

407. And the remote equipment determines the transmitting power of the discovery signal according to a preset mapping table and the mask sequence.

In this embodiment, the remote device can determine the transmission power of the discovery signal by querying a preset mapping table in the case that the mask sequence is known, where the remote device and the relay device use the same preset mapping table.

In the embodiment of the application, the Relay device carries the transmission power through the mask of the demodulation reference signal in the discovery signal, the remote device analyzes the demodulation reference signal after receiving the discovery signal, the transmission power can be obtained according to the mask sequence of the demodulation reference signal, and the transmission power is subtracted by the received signal strength when the remote device receives the discovery signal to obtain the propagation path loss between the remote device and the Relay device, so that the power control under the UE-to-Network Relay scene can be realized.

(II) jointly carrying power indication information through mask of demodulation reference signal in discovery signal and MIB-SL in PSBCH

Referring to fig. 7, an embodiment of the present invention provides a method for indicating transmit power, including:

701. the relay equipment determines the reference transmitting power and the power deviation value of the discovery signal;

in this embodiment, in a UE-to-Network Relay scenario, a Relay device and a Remote device may directly send a message and corresponding control information without going through a base station, a PSDCH that has been defined is used for the Relay device to broadcast a discovery signal, which may also be referred to as a discovery message, considering a scenario of a Remote terminal (Remote UE) that supports a bandwidth of 1 PRB, where the bandwidth of the discovery signal also needs to be reduced from 2 PRBs to 1 PRB, in order to keep the code rate unchanged under the condition that the message content of the discovery signal is not changed, the discovery signal needs to be extended from the current 1 subframe to 2 subframes, and, when the relay device generates the discovery signal, the relay device has determined a reference transmit power at which to transmit the discovery signal, but a power offset may be generated based on the reference transmit power when the discovery signal is actually transmitted, the amount of power offset generated being expressed in terms of a power offset value.

702. The relay equipment generates reference power information in a bypass main information block according to the reference transmitting power;

in this embodiment, the reference transmission power of the discovery signal may be the same as or different from the reference transmission power of the PSBCH, and if the same, only 1 information field is needed to represent the reference transmission power of the PSBCH and the discovery signal; if not, two independent information fields are required to represent the reference transmission power of the PSBCH and the discovery signal, respectively. Reference power information, i.e., representing reference transmit power, is represented by a field of an information field in the MIB-SL, which is defined as P _ ref.

703. The relay equipment determines a mask sequence corresponding to the power deviation value according to a preset mapping table;

in this embodiment, the power offset value represents a power offset based on P _ ref, the power offset value is defined as P _ offset ═ n × P _ step, each mask sequence represents an n value, and P _ step may be configured by the relay device through the MIB-SL or in a preconfigured manner; alternatively, the power offset value is defined as a fractional value alpha, i.e., P _ offset is equal to alpha × P _ ref, for example, the value range of alpha may be defined as [0, 0.25, 0.75, 1 ]. The mask sequence corresponding to the power offset value may be as shown in table 2 below.

TABLE 2

704. The relay equipment generates a demodulation reference signal of the discovery signal according to the mask sequence;

in this embodiment, after selecting the mask sequence corresponding to the power offset value, the relay device generates the demodulation reference signal of the discovery signal according to the mask sequence, that is, one bit in the mask sequence is sequentially multiplied by the frequency domain sequence of each symbol of the demodulation reference signal.

705. The relay equipment sends a bypass main information block comprising reference power information and a discovery signal comprising a demodulation reference signal to remote equipment, and the remote equipment receives the discovery signal and the bypass main information block sent by the relay equipment;

in this embodiment, the relay device sends the bypass master information block including the reference power information to the remote device through the PSBCH, sends the discovery signal including the mask of the demodulation reference signal to the remote device through the PSDCH, and the remote device acquires the bypass master information block and the discovery signal through the PSBCH and the PSDCH, respectively. The transmission power of the discovery signal sent by the relay device is defined as Ptx ═ P _ ref + Poffset, or Ptx ═ P _ ref-Poffset, the reference transmission power is P _ ref, and the power offset value is P _ offset, and the specific manner is not limited.

706. The remote equipment analyzes the discovery signal to obtain a mask of a demodulation reference signal, and analyzes the bypass main information block to obtain reference power information;

in this embodiment, the remote device analyzes the discovery signal to obtain a mask of the demodulation reference signal, and analyzes the bypass master information block to obtain reference power information.

707. The remote equipment determines the reference transmitting power of the discovery signal according to the reference power information;

in this embodiment, the reference power information of the discovery signal is represented by an information field or field in the MIB-SL, and the reference transmit power P _ ref can be obtained according to the information field or field in the MIB-SL.

708. The remote equipment obtains a mask sequence according to the mask of the demodulation reference signal, and determines a power deviation value of the discovery signal according to a preset mapping table and the mask sequence;

in this embodiment, the remote device obtains a mask sequence according to a mask of the demodulation reference signal, and determines a power offset value P _ offset of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table used by the remote device and the relay device is the same.

709. And the remote equipment calculates the transmitting power of the discovery signal according to the reference transmitting power and the power deviation value.

In this embodiment, the remote device calculates the transmit power Ptx of the discovery signal according to a reference transmit power P _ ref and a power offset value P _ offset, where the power offset value P _ offset is defined differently, and the transmit power Ptx may be denoted by Ptx ═ P _ ref-n × P _ step, or Ptx ═ P _ ref + n × P _ step, or Ptx ═ P _ ref-P _ ref ×, or Ptx ═ P _ ref + P _ ref _ alpha. How to calculate Ptx through P _ ref and P _ offset is not limited, but the relay device and the remote device should adopt the same convention.

In the embodiment of the application, the Relay device considers the reference transmission power of the discovery signal and the power offset value when the discovery signal is actually sent, transmits the reference transmission power through the MIB-SL, carries the power offset value through the mask of the demodulation reference signal in the discovery signal, after the remote device receives the discovery signal and the MIB-SL, the power offset value can be obtained according to the demodulation reference signal, the reference transmission power is obtained through the MIB-SL, the transmission power is obtained through calculation according to the reference transmission power and the power offset value, and then the transmission power subtracts the received signal strength when the remote device receives the discovery signal to obtain the propagation path loss between the remote device and the Relay device, so that the power control under the UE-to-Network Relay scene can be realized.

It should be noted that, in addition to the above two manners (a) and (b), the power indication information may be carried by the MIB-SL in the PSBCH, that is, the power indication field is added to the MIB-SL to indicate the transmission powers of the PSBCH and the discovery signal, and if both the PSBCH and the discovery signal have the same transmission power, only one field needs to be added; if both the PSBCH and the discovery signal have different transmission powers, two independent power indication fields are used to indicate the transmission powers of the PSBCH and the discovery signal, respectively.

It should be noted that, the above embodiment describes how the relay device indicates the transmission power of its transmission signal by taking the discovery signal as an example, the method is also applicable to the relay device indicating the transmission power of other signals through other signals, for example, signals carrying data transmitted on a Physical Shared CHannel (PSCH).

The above embodiment describes a transmission method of transmission power, and the following describes a relay device and a remote device respectively through a modular device embodiment.

Referring to fig. 8, an embodiment of the present application provides a relay device, including:

a processing module 801, configured to generate transmission power indication information of a discovery signal;

a sending module 802, configured to send the transmission power indication information to the remote device, so that the remote device obtains the transmission power of the discovery signal according to the transmission power indication information.

In this embodiment of the present application, the sending module 802 sends the transmission power indication information, which is generated by the processing module 801 and used for indicating the transmission power of the discovery signal, to the remote device, and the remote device can obtain the transmission power of the discovery signal through the transmission power indication information, so that when the remote device receives the discovery signal, the transmission power when the Relay device sends the discovery signal can be subtracted by the received signal strength when the remote device receives the discovery signal, so as to obtain the propagation path loss between the remote device and the Relay device, and the remote device or the Relay device can further determine the transmission power of the sildelink signal, thereby implementing power control in the UE-to-Network Relay scene.

Alternatively, in some embodiments of the present application, the transmission power indication information is represented by a mask of the demodulation reference signal,

a processing module 801, specifically configured to determine a transmit power of the discovery signal;

the processing module 801 is further configured to determine a mask sequence corresponding to the transmission power according to a preset mapping table, where the preset mapping table includes a one-to-one mapping relationship between at least one transmission power and at least one mask sequence;

the processing module 801 is further configured to generate a demodulation reference signal of the discovery signal according to the mask sequence.

In the embodiment of the present application, in a UE-to-Network Relay scenario, a message and corresponding control information may be directly sent between a Relay device and a Remote device without passing through a base station, a PSDCH that has been defined is used for the Relay device to broadcast a discovery signal, the discovery signal may also be referred to as a discovery message, a scenario of a Remote UE that supports a bandwidth of 1 PRB is considered, at this time, the bandwidth of the discovery signal also needs to be reduced from the current 2 PRBs to 1 PRB, in order to keep a code rate unchanged under a condition that a message content of the discovery signal is unchanged, the discovery signal needs to be extended from the current 1 subframe to 2 subframes, and when the Relay device generates the discovery signal, transmission power for transmitting the discovery signal is configured. After the discovery signal is subjected to time domain spreading, the DMRS symbols are added, the transmission power of the discovery signal is indicated by using an orthogonal mask on the added DMRS symbols, where the orthogonal mask of the DMRS is obtained by multiplying a frequency domain sequence of each DMRS symbol by a value (1 or-1), mask sequences of the orthogonal masks of two DMRS symbols may be (1,1) and (1, -1), and the orthogonal mask is originally used to reduce interference between the DMRS symbols, but in a relay scenario, a relay device may schedule resources used by the discovery signal by itself, and a remote device is not available, so that a manner of reducing interference by using the randomized orthogonal mask is not significant in the relay scenario, and thus, limited several kinds of power indication information may be carried by using the orthogonal masks. The processing module 801 determines a mask sequence corresponding to the transmission power through a preset mapping table, and the processing module 801 generates a demodulation reference signal of the discovery signal according to the mask sequence.

Alternatively, in some embodiments of the present application,

the sending module 802 is specifically configured to send a discovery signal including a demodulation reference signal to a remote device.

In this embodiment of the application, after the processing module 801 generates the demodulation reference signal of the discovery signal according to the mask sequence, the sending module 802 sends the discovery signal to the remote device through the PSDCH.

Optionally, in some embodiments of the present application, the transmission power indication information includes reference power information and a power offset value represented by a mask of the demodulation reference signal,

a processing module 801, configured to determine a reference transmission power and a power offset value of the discovery signal, where the power offset value is a power offset generated on the basis of the reference transmission power when the relay device transmits the discovery signal;

a processing module 801, further configured to generate reference power information in the bypass master information block according to the reference transmit power;

the processing module 801 is further configured to determine a mask sequence corresponding to the power offset value according to a preset mapping table, where the preset mapping table includes a one-to-one mapping relationship between at least one power offset value and at least one mask sequence;

In the embodiment of the present application, when the processing module 801 generates the discovery signal, the reference transmission power for transmitting the discovery signal is already configured, but when the discovery signal is actually transmitted, a power offset may be generated based on the reference transmission power, and an amount of the generated power offset is represented by a power offset value. The processing module 801 represents the reference power information by a field of an information field in the MIB-SL, and the processing module 801 determines a mask sequence corresponding to the power offset value according to a preset mapping table and generates a demodulation reference signal of the discovery signal according to the mask sequence.

Alternatively, in some embodiments of the present application,

the sending module 802 is specifically configured to send the bypass master information block including the reference power information and the discovery signal including the demodulation reference signal to the remote device.

In this embodiment of the present application, the sending module 802 sends the bypass master information block including the reference power information to the remote device through the PSBCH, sends the discovery signal including the demodulation reference signal to the remote device through the PSDCH, and the remote device obtains the bypass master information block and the discovery signal through the PSBCH and the PSDCH, respectively.

Referring to fig. 9, an embodiment of the present application provides a remote device, which includes

A receiving module 901, configured to receive transmit power indication information sent by a relay device, where the transmit power indication information is used to indicate transmit power of a discovery signal;

a processing module 902, configured to obtain the transmit power of the discovery signal according to the transmit power indication information.

In this embodiment of the present application, the receiving module 901 receives transmission power indication information, which is used for indicating transmission power of a discovery signal and sent by a Relay device, and the processing module 902 obtains the transmission power of the discovery signal according to the transmission power indication information, so that when the receiving module 901 receives the discovery signal, the transmission power when the Relay device sends the discovery signal can be subtracted by the received signal strength when the receiving module 901 receives the discovery signal, so as to obtain propagation path loss between a remote device and the Relay device, thereby implementing power control in a UE-to-Network Relay scene.

a receiving module 901, specifically configured to receive a discovery signal sent by a relay device;

the processing module 902 is further configured to parse the discovery signal to obtain a mask of the demodulation reference signal.

In this embodiment of the application, if the transmission power indication information is represented by a mask of a demodulation reference signal, after the receiving module 901 receives a discovery signal sent by a relay device, the processing module 902 parses the discovery signal to obtain the mask of the demodulation reference signal.

Alternatively, in some embodiments of the present application,

the processing module 902 is further configured to obtain a mask sequence according to the mask of the demodulation reference signal;

the processing module 902 is further configured to determine the transmission power of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one transmission power and at least one mask sequence.

In this embodiment of the present application, the processing module 902 obtains a mask sequence according to a mask of a demodulation reference signal, and determines the transmission power of a discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one transmission power and at least one mask sequence, and the relay device is the same as the preset mapping table used by the processing module 902.

a receiving module 901, configured to receive a discovery signal and a bypass master information block sent by a relay device;

the processing module 902 is further configured to analyze the discovery signal to obtain a mask of the demodulation reference signal, and analyze the bypass master information block to obtain reference power information.

In this embodiment of the application, if the power indication information includes reference power information and a demodulation reference signal, after the receiving module 901 receives a discovery signal and a bypass master information block sent by the relay device, the processing module 902 analyzes the discovery signal to obtain a demodulation reference signal, and analyzes the bypass master information block to obtain reference power information.

Alternatively, in some embodiments of the present application,

a processing module 902, further configured to determine a reference transmit power of the discovery signal according to the reference power information;

the processing module 902 is further configured to determine a power offset value of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one power offset value and at least one mask sequence;

the processing module 902 is further configured to calculate the transmit power of the discovery signal according to the reference transmit power and the power offset value.

In this embodiment, the processing module 902 determines a reference transmission power of the discovery signal according to the reference power information, obtains a mask sequence according to a mask of the demodulation reference signal, determines a power offset value of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one power offset value and at least one mask sequence, and calculates the transmission power of the discovery signal according to the reference transmission power and the power offset value.

Fig. 10 is a schematic structural diagram of a relay apparatus 1000 according to an embodiment of the present application. The edge gateway device 1000 includes at least one processor 1010 and a transceiver 1030, the transceiver 1030 and the at least one processor 1010 being interconnected by a line.

Optionally, as shown in fig. 10, in some embodiments of the present application, the edge gateway apparatus 1000 further includes: a memory 1050; the memory 1050 may include both read-only memory and random access memory, and provides operational instructions and data to the processor 1010. A portion of the memory 1050 may also include non-volatile random access memory (NVRAM). Memory 1050 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

in the embodiment of the present application, the corresponding operation is performed by calling an operation instruction stored in the memory 1050 (the operation instruction may be stored in an operating system). The processor 1010 controls the operation of the MEC network element device 1000, and the processor 1010 may also be referred to as a Central Processing Unit (CPU). Memory 1050 may include both read-only memory and random access memory, and provides instructions and data to processor 1010. A portion of the memory 1050 may also include non-volatile random access memory (NVRAM). In a particular application, the various components of the access network device 1000 are coupled together by a bus system 1020, wherein the bus system 1020 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 1020.

The method disclosed in the embodiments of the present application may be applied to the processor 1010 or implemented by the processor 1010. The processor 1010 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1010. The processor 1010 may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1050, and the processor 1010 reads the information in the memory 1050 and performs the steps of the above method in combination with the hardware thereof.

The remote device may also be understood with reference to fig. 10.

The present application also provides a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to execute the transmission method of transmission power described in the above embodiment.

The present application also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the transmission method of transmission power as described in the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for indicating transmission power, comprising:

The relay device generates the transmit power indication information of the discovery signal;

The relay device sends the transmission power indication information to the remote device, so that the remote device obtains the transmission power of the discovery signal according to the transmission power indication information;

The transmit power indication information is represented by the mask of the demodulation reference signal and/or the bypass main information block;

When the transmit power indication information is represented by the mask of the demodulation reference signal,

The relay device generates transmit power indication information of the discovery signal, including:

The relay device determines the transmit power of the discovery signal;

The relay device determines a mask sequence corresponding to the transmit power according to a preset mapping table, where the preset mapping table includes a one-to-one mapping relationship between at least one transmit power and at least one mask sequence;

generating, by the relay device, a demodulation reference signal of the discovery signal according to the mask sequence;

When the transmit power indication information is represented by the mask of the demodulation reference signal and the bypass master information block,

The transmit power indication information includes reference power information and a power offset value represented by a mask of the demodulation reference signal;

The relay device determines a reference transmit power and a power offset value of the discovery signal, where the power offset value is a power offset generated on the basis of the reference transmit power when the relay device transmits the discovery signal;

generating, by the relay device, the reference power information in the bypass main information block according to the reference transmit power;

The relay device determines a mask sequence corresponding to the power offset value according to a preset mapping table, where the preset mapping table includes a one-to-one mapping relationship between at least one power offset value and at least one mask sequence ;

The relay device generates a demodulation reference signal of the discovery signal according to the mask sequence.

2. The method according to claim 1, wherein the relay device sends the transmit power indication information to a remote device, comprising:

The relay device sends the discovery signal including the demodulation reference signal to the remote device.

3. The method according to claim 1, wherein the relay device sends the transmit power indication information to a remote device, comprising:

The relay device sends the bypass master information block including the reference power information and the discovery signal including the demodulation reference signal to the remote device.

4. A method for indicating transmit power, comprising:

The remote device receives the transmit power indication information sent by the relay device, where the transmit power indication information is used to indicate the transmit power of the discovery signal;

obtaining, by the remote device, the transmit power of the discovery signal according to the transmit power indication information;

The remote device receives the transmit power indication information sent by the relay device, including:

The remote device receives the discovery signal sent by the relay device;

The remote device parses the discovery signal to obtain the mask of the demodulation reference signal;

The remote device receives the discovery signal sent by the relay device and bypasses the main information block;

The remote device parses the discovery signal to obtain the mask of the demodulation reference signal, and parses the bypass main information block to obtain reference power information.

5. The method according to claim 4, wherein the remote device obtains the transmit power of the discovery signal according to the transmit power indication information, comprising:

The remote device obtains a mask sequence according to the mask of the demodulation reference signal;

The remote device determines the transmit power of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one mapping relationship between at least one transmit power and at least one mask sequence.

6. The method according to claim 4, wherein the remote device obtains the transmit power of the discovery signal according to the transmit power indication information, comprising:

determining, by the remote device, the reference transmit power of the discovery signal according to the reference power information;

The remote device determines the power offset value of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one correspondence between at least one power offset value and at least one mask sequence the mapping relationship;

The remote device calculates and obtains the transmit power of the discovery signal according to the reference transmit power and the power offset value.

7. a relay device, is characterized in that, comprises:

a processing module for generating the transmit power indication information of the discovery signal;

a sending module, configured to send the transmit power indication information to a remote device, so that the remote device acquires the transmit power of the discovery signal according to the transmit power indication information;

Wherein, the transmit power indication information is represented by the mask of the demodulation reference signal and/or the bypass main information block;

The processing module is specifically configured to determine the transmit power of the discovery signal;

The processing module is further configured to determine a mask sequence corresponding to the transmit power according to a preset mapping table, where the preset mapping table includes a one-to-one mapping relationship between at least one transmit power and at least one mask sequence;

The processing module is further configured to generate a demodulation reference signal of the discovery signal according to the mask sequence;

The processing module is specifically configured to determine a reference transmit power and a power offset value of the discovery signal, where the power offset value is the power generated on the basis of the reference transmit power when the relay device transmits the discovery signal offset;

The processing module is further configured to generate reference power information in the bypass main information block according to the reference transmit power;

The processing module is further configured to determine a mask sequence corresponding to the power offset value according to a preset mapping table, where the preset mapping table includes a one-to-one correspondence between at least one power offset value and at least one mask sequence the mapping relationship;

The processing module is further configured to generate a demodulation reference signal of the discovery signal according to the mask sequence.

8. The relay device according to claim 7, wherein,

The sending module is specifically configured to send the discovery signal including the demodulation reference signal to a remote device.

9. The relay device according to claim 7, wherein,

The sending module is specifically configured to send the bypass master information block including the reference power information and the discovery signal including the demodulation reference signal to the remote device.

10. A remote device, comprising:

a receiving module, configured to receive transmit power indication information sent by the relay device, where the transmit power indication information is used to indicate the transmit power of the discovery signal;

a processing module, configured to obtain the transmit power of the discovery signal according to the transmit power indication information;

The receiving module is specifically configured to receive the discovery signal sent by the relay device;

The processing module is further configured to parse the discovery signal to obtain a mask of the demodulation reference signal;

The receiving module is specifically configured to receive the discovery signal and bypass the main information block sent by the relay device;

The processing module is further configured to parse the discovery signal to obtain the mask of the demodulation reference signal, and parse the bypass main information block to obtain reference power information.

11. The remote device of claim 10, wherein:

The processing module is further configured to obtain a mask sequence according to the mask of the demodulation reference signal;

The processing module is further configured to determine the transmission power of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes a one-to-one correspondence between at least one transmission power and at least one mask sequence. Mapping relations.

12. The remote device of claim 10, wherein

The processing module is further configured to determine the reference transmit power of the discovery signal according to the reference power information;

The processing module is further configured to determine the power offset value of the discovery signal according to a preset mapping table and the mask sequence, where the preset mapping table includes at least one power offset value and at least one mask sequence. One-to-one mapping relationship;

The processing module is further configured to calculate and obtain the transmit power of the discovery signal according to the reference transmit power and the power offset value.

13. A relay device, comprising: a transceiver and at least one processor, wherein the transceiver and the at least one processor are interconnected through a line, and the transceiver is used to perform any one of claims 1-3. In the method, the operation of information sending and receiving performed on the relay device side;

The at least one processor performs the information processing or control operation performed on the relay device side in the method of any one of claims 1-3.

14. A remote device, comprising: a transceiver and at least one processor, wherein the transceiver and the at least one processor are interconnected through a line, and the transceiver is used to execute any one of claims 4-6 In the method, the operation of sending and receiving information is performed on the remote device side;

The at least one processor performs the information processing or control operation performed on the relay device side in the method of any one of claims 4-6.