WO2016161709A1

WO2016161709A1 - Resource configuration method and apparatus for d2d communication, and terminal

Info

Publication number: WO2016161709A1
Application number: PCT/CN2015/082985
Authority: WO
Inventors: 雷艺学; 张晨璐; 张文杰; 江明; 郑倩; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-04-09
Filing date: 2015-06-30
Publication date: 2016-10-13
Also published as: CN104703224A; CN104703224B

Abstract

Provided are a resource configuration method and apparatus for D2D communication, and a terminal, wherein the resource configuration method for D2D communication comprises: determining whether it is necessary to provide a relay function of D2D communication for other terminals; and when it is determined that it is necessary to provide the relay function of the D2D communication for the other terminals, configuring transmission resources which are used for performing the D2D communication for the other terminals, so that the other terminals perform the D2D communication using the transmission resources. According to the technical solution of the present invention, a secondary link of D2D communication can be fully utilized for connection, thereby realizing the flexible configuration of the transmission resources of other terminals, and effectively solving a resource allocation problem in the D2D communication.

Description

Resource configuration method, device and terminal for D2D communication

The present application claims priority to Chinese Patent Application No. 201510166178.8, entitled "Resource Configuration Method, Apparatus and Terminal for D2D Communication", which is incorporated by reference in its entirety. In this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a resource configuration method for D2D communication, a resource configuration device for D2D communication, and a terminal.

Background technique

Device to Device (D2D, a technology for terminal direct communication introduced by 3GPP Rel-12, which allows user data transmission without going through the infrastructure of the cellular network) means that the user terminals (UE) can directly perform Communication, without the need to transmit or forward through a device such as a base station (eNB), D2D communication can be deployed within the coverage of the cellular network and/or outside the network coverage.

UE-to-Network (UE-to-Network) trunking is a new feature introduced in D2D communication. It has the advantages of flexible deployment and can expand network coverage without increasing existing network equipment. In commercial communications and even public security. There are important applications in the field of communications (such as earthquakes, wars). As shown in FIG. 1 , the unicast UE-NW relay system cannot establish a good connection with the base station 102 when the terminal 106 (ie, the remote UE) is outside the network coverage of the base station 102, but can be covered with the adjacent network. The terminal 104 (relay UE) within the range establishes good D2D communication, and therefore, the terminal 106 can connect to the base station or other network node through the relay UE.

Currently, 3GPP defines a link between UEs in D2D communication as a secondary link (Side link), and defines the following two resource allocation methods:

Manner 1: In the RRC connection state, the UE requests the transmission resource from the eNB, and the eNB schedules the resource for the UE according to the report information of the UE, and the resource pool is not needed in this manner;

Manner 2: The UE autonomously selects the transmission resource from the resource pool. In this case, the pre-configured resource pool or the resource pool configured by the eNB is required.

When the UE is in the network coverage, the resource allocation may be performed by using any one of the foregoing two manners according to the eNB configuration; and when the mode 2 is adopted, the resource pool information is set by the eNB by sending RRC signaling.

When the UE is out of network coverage, only the second resource allocation mode described above can be used, and a pre-configured resource pool is used.

In the UE-NW relay working mode, some UEs are in the network coverage, and some UEs are outside the network coverage. The current D2D communication has not yet given a special resource configuration method. If the current method is still in the existing mode, the remote end The UE uses the pre-configured resource pool, and the relay UE uses the resource pool configured by the eNB or is scheduled by the eNB. The D2D sub-link connection is not fully utilized, and the eNB resource allocation capability is wasted, and some are not considered. The resource configuration capability that the relay UE may be competent.

Summary of the invention

The present invention is based on at least one of the above technical problems, and proposes a new resource configuration scheme for D2D communication, which can fully utilize the sub-link connection of D2D communication, and realize flexible configuration of transmission resources of other terminals. The resource allocation problem in D2D communication is effectively solved.

In view of this, the present invention provides a resource configuration method for D2D communication suitable for a terminal, including: determining whether a relay function of D2D communication needs to be provided for other terminals; and determining that D2D communication needs to be provided for the other terminal. When the relay function is performed, the other terminal is configured with a transmission resource for performing D2D communication, so that the other terminal performs D2D communication through the transmission resource.

In this technical solution, the terminal configures transmission resources for performing D2D communication to other terminals when determining that a relay function of D2D communication needs to be provided for other terminals, so that when other terminals are not within the coverage of the base station, The configuration of the transmission resource is implemented by the terminal as the relay UE, and the secondary link connection of the D2D communication is fully utilized, thereby realizing the flexible configuration of the transmission resources of other terminals, and effectively solving the resource allocation problem in the D2D communication.

The step of configuring the transmission resource to the other terminal in the foregoing technical solution specifically includes the following methods:

method one:

Obtaining a resource pool allocated by the base station;

Broadcasting the resource pool for the other terminal to select the transmission resource from the resource pool; or when receiving the resource allocation request sent by the other terminal, sending the resource pool to the other terminal And for the other terminal to select the transmission resource from the resource pool.

In this technical solution, the terminal that is the relaying UE can acquire the resource pool allocated by the base station, and broadcast the obtained resource pool to other terminals, so that the other terminal selects the transmission resource from the received resource pool; The acquired resource pool may not be broadcasted, but the acquired resource pool may be transmitted to other terminals when receiving the resource allocation request sent by other terminals.

Method 2:

Configuring a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or buffer status report;

In this technical solution, the channel quality indicator value indicates the communication quality between the D2D communication, and the buffer status report indicates the amount of data to be transmitted by the D2D communication, so the terminal as the relay UE can indicate the value and buffer according to the recorded historical channel quality. The area status report actively configures the resource pool for D2D communication, so that the resource pool configured by the terminal can be more convenient for D2D communication. After the configuration of the resource pool is completed, the configured resource pool may be broadcasted, or the configured resource pool may be sent to other terminals when receiving the resource allocation request sent by other terminals.

In the above technical solution, preferably, the historical channel quality indicator value and/or the buffer status report includes: a channel quality indicator value and/or a buffer status report measured by the terminal, and the other terminal reporting Channel quality indicator value and/or buffer status report.

In the above technical solution, preferably, the method further includes: detecting a data transmission delay and a signal transmission quality during D2D communication with the other terminal; and if the data transmission delay in the D2D communication process with the other terminal is greater than Or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value, then the resource pool is reconfigured.

In this technical solution, the data transmission delay in the process of detecting D2D communication with other terminals is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality. When the value is used, the resource pool is reconfigured so that the transmission resources in the resource pool can be updated in time when the D2D communication quality is poor, so as to ensure the D2D communication quality between the terminals.

Method three:

Measure a current channel quality indicator value of the terminal and/or a current buffer status;

And configuring, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication;

When receiving the resource configuration request sent by the other terminal, the other terminal is allocated a transmission resource for reporting the current channel quality indicator value of the other terminal and/or the current buffer status report, for the other terminal to send a current channel quality indicator value and/or a current buffer status report of the other terminal;

And allocating transmission resources for performing D2D communication to the other terminal according to the current channel quality indicator value of the other terminal and/or the current buffer status report sent by the other terminal.

In this technical solution, the transmission resource of the D2D communication by the terminal is configured according to the current channel quality indicator value of the terminal and/or the current buffer status, and according to the current channel quality indicator value of the other terminal and/or the current buffer status. The report allocates transmission resources for D2D communication to other terminals, so that the transmission resources for D2D communication can be properly configured in real time to ensure high communication quality of D2D communication between terminals.

In the above technical solution, preferably, the method further includes: reconfiguring the transmission resource of the terminal for performing D2D communication and the D2D communication of the other terminal for each transmission time interval or every predetermined time length Transmission resource, wherein the predetermined duration is greater than the transmission time interval.

In this technical solution, in order to ensure that the D2D communication always has a high communication quality, the transmission resources for performing D2D communication may be reconfigured in each time interval; of course, it may be further after each interval. Reconfigure.

In the above technical solution, preferably, the method further includes: selecting, from the resource pool, a transmission resource that performs D2D communication with the other terminal.

In the foregoing technical solution, preferably, the transmission resource includes: a time-frequency resource and a transmission mode.

In the above technical solution, preferably, the method further includes: according to current status information of the terminal And/or a network condition in which the terminal is currently located, setting a mode of configuring a transmission resource for performing D2D communication to the other terminal. Specifically, the foregoing three resource configuration manners may be used separately, or may be flexibly switched and combined according to the current state information of the terminal and/or the network condition where the terminal is currently located. The current state information of the terminal includes: the time that the terminal waits for the resource configuration, the battery power of the terminal, and the like; the network conditions currently in which the terminal is located include: the channel quality of the D2D communication, the interference size, and the like.

According to another aspect of the present invention, there is also provided a resource configuration apparatus for D2D communication suitable for a terminal, comprising: a determining unit, configured to determine whether a relay function of D2D communication needs to be provided for other terminals; a configuration unit, When the determining unit determines that a relay function of providing D2D communication for the other terminal is required, configuring, for the other terminal, a transmission resource for performing D2D communication, so that the other terminal performs the transmission resource D2D communication.

The manner in which the configuration unit configures the transmission resource to the other terminal specifically includes the following:

method one:

The configuration unit includes:

An obtaining unit, configured to acquire a resource pool allocated by the base station;

a first broadcast unit, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

The first interaction unit is configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool.

In this technical solution, the terminal that is the relaying UE can acquire the resource pool allocated by the base station, and broadcast the obtained resource pool to other terminals, so that the other terminal selects the transmission resource from the received resource pool; You can not broadcast the acquired resource pool, but receive other When the resource allocation request is sent by the terminal, the obtained resource pool is transmitted to other terminals.

Method 2:

The configuration unit includes:

a first processing unit, configured to automatically configure a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report;

a second broadcast unit, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

And a second interaction unit, configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool.

In the above technical solution, preferably, the configuration unit further includes: a detecting unit, configured to detect a data transmission delay and a signal transmission quality during D2D communication with the other terminal; the first processing unit further uses When the detecting unit detects that the data transmission delay during the D2D communication with the other terminal is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value, Reconfigure the resource pool.

In this technical solution, the resource is reconfigured by detecting that the data transmission delay during the D2D communication with other terminals is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value. The pool enables timely updating of transmission resources in the resource pool when D2D communication quality is poor, so as to ensure D2D communication quality between terminals.

Method three:

The configuration unit includes: a measuring unit, configured to measure a current channel quality indicator value of the terminal and/or a current buffer status;

a second processing unit, configured to configure, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and used to send the other terminal after receiving When the resource configuration request is made, the other terminal is allocated a transmission resource for reporting the current channel quality indicator value of the other terminal and/or the current buffer status report, so that the other terminal sends the current status of the other terminal. Channel quality indicator value and/or current buffer status report, and

The second processing unit is further configured to configure, according to the current channel quality indicator value of the other terminal and the current buffer status report sent by the other terminal, the transmission resource for performing D2D communication to the other terminal.

In the above technical solution, preferably, the second processing unit is further configured to: reconfigure the transmission resource of the terminal for performing D2D communication and the other at each transmission time interval or every predetermined time interval a transmission resource of the terminal for performing D2D communication, wherein the predetermined duration is greater than the transmission time interval.

In the above technical solution, preferably, the method further includes: a selecting unit, configured to select, from the resource pool, a transmission resource that performs D2D communication with the other terminal.

In the above technical solution, preferably, the configuration unit is further configured to: configure, according to the current state information of the terminal and/or the network condition that the terminal is currently located, to configure the other terminal The mode in which the transmission resources for D2D communication are placed. Specifically, the foregoing three resource configuration manners may be used separately, or may be flexibly switched and combined according to the current state information of the terminal and/or the network condition where the terminal is currently located. The current state information of the terminal includes: the time that the terminal waits for the resource configuration, the battery power of the terminal, and the like; the network conditions currently in which the terminal is located include: the channel quality of the D2D communication, the interference size, and the like.

According to still another aspect of the present invention, a terminal is further provided, comprising: a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The memory stores a set of program codes, and the processor calls the program code stored in the memory to perform the following operations:

Determine whether it is necessary to provide relay functions for D2D communication for other terminals;

When it is determined that a relay function of D2D communication needs to be provided for the other terminal, a transmission resource for performing D2D communication is configured to the other terminal to enable the other terminal to perform D2D communication through the transmission resource.

In the foregoing technical solution, the step of configuring the transmission resource for performing D2D communication to the other terminal when the processor needs to provide the relay function of the D2D communication to the other terminal, specifically includes:

Obtaining a resource pool allocated by the base station;

Controlling a transceiver device to broadcast the resource pool for the other terminal to select the transmission resource from the resource pool; or

And when the resource allocation request sent by the other terminal is received by the transceiver, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.

When the transceiver receives the resource allocation request sent by the other terminal, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.

In the foregoing technical solution, preferably, the historical channel quality indicator value and/or the buffer status report includes:

a channel quality indicator value and/or a buffer status report measured by the terminal, and a channel quality indicator value and/or a buffer status report reported by the other terminal.

Detecting data transmission delay and signal transmission quality during D2D communication with the other terminal;

The step of the processor independently configuring the resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report further includes: detecting, by the processor, performing D2D with the other terminal The resource pool is reconfigured when the data transmission delay during the communication is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value.

And configuring, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and when the transceiver receives the resource configuration request sent by another terminal, Allocating, to the other terminal, a transmission resource for reporting a current channel quality indicator value of the other terminal and/or a current buffer status report, for the other terminal to send a current channel quality indicator value of the other terminal and/or Or the current buffer status report, and

In the above technical solution, preferably, the processor is further configured to:

Transmitting resources of the terminal for performing D2D communication and transmission resources of the other terminal for performing D2D communication are reconfigured at each transmission time interval or every predetermined time interval, wherein the predetermined duration is greater than The transmission time interval.

A transmission resource that performs D2D communication with the other terminal is selected in the resource pool.

A mode of configuring a transmission resource for performing D2D communication to the other terminal is set according to current state information of the terminal and/or a network condition in which the terminal is currently located.

Through the above technical solution, the sub-link connection of the D2D communication can be fully utilized, the flexible configuration of the transmission resources of other terminals is realized, and the resource allocation problem in the D2D communication is effectively solved.

DRAWINGS

FIG. 1 is a schematic structural diagram of a system of a UE-NW relay in D2D communication;

2 shows a schematic flow chart of a resource configuration method for D2D communication suitable for a terminal according to an embodiment of the present invention;

FIG. 3 shows a schematic block diagram of a resource configuration apparatus for D2D communication suitable for a terminal according to an embodiment of the present invention; FIG.

4A is a schematic flow chart showing a resource configuration manner according to a first embodiment of the present invention;

4B is a schematic flow chart showing a resource configuration manner according to a second embodiment of the present invention;

FIG. 5A is a schematic flowchart diagram of a resource configuration manner according to a third embodiment of the present invention; FIG.

FIG. 5B is a schematic flowchart showing a resource configuration manner according to a fourth embodiment of the present invention; FIG.

6A is a schematic flow chart showing a resource configuration manner according to a fifth embodiment of the present invention;

FIG. 6B is a flow chart showing a resource configuration manner according to a sixth embodiment of the present invention.

Fig. 7 is a block diagram showing the structure of a terminal in accordance with a first embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

FIG. 2 shows a schematic flow chart of a resource configuration method for D2D communication suitable for a terminal according to an embodiment of the present invention.

As shown in FIG. 2, a resource configuration method for D2D communication applicable to a terminal according to an embodiment of the present invention includes: Step 202, determining whether a relay function of D2D communication needs to be provided for other terminals; Step 204, determining When it is required to provide the relay function of the D2D communication for the other terminal, the transmission resource for performing D2D communication is configured to the other terminal, so that the other terminal performs D2D communication through the transmission resource.

method one:

Obtaining a resource pool allocated by the base station;

Method 2:

In the above technical solution, preferably, the method further includes: detecting a data transmission delay and a signal transmission quality during D2D communication with the other terminal; and if the data transmission delay in the D2D communication process with the other terminal is greater than Or equal to the preset delay value, and/or the signal transmission quality If the amount is less than or equal to the preset quality value, the resource pool is reconfigured.

Method three:

In the above technical solution, preferably, the method further includes: configuring, according to current state information of the terminal and/or a network condition that the terminal is currently located, configuring, for the transmission resource of the D2D communication, to the other terminal. mode. Specifically, the foregoing three resource configuration manners may be used separately, or may be flexibly switched and combined according to the current state information of the terminal and/or the network condition where the terminal is currently located. The current state information of the terminal includes: the time that the terminal waits for the resource configuration, the battery power of the terminal, and the like; the network conditions currently in which the terminal is located include: the channel quality of the D2D communication, the interference size, and the like.

FIG. 3 shows a schematic block diagram of a resource configuration apparatus for D2D communication suitable for a terminal according to an embodiment of the present invention.

As illustrated in FIG. 3, a resource configuration apparatus 300 for D2D communication suitable for a terminal according to an embodiment of the present invention includes: a determining unit 302 and a configuration unit 304.

The determining unit 302 is configured to determine whether a relay function of the D2D communication needs to be provided for the other terminal, and the configuration unit 304 is configured to: when the determining unit 302 determines that the relay function of the D2D communication needs to be provided for the other terminal, A transmission resource for performing D2D communication is configured to the other terminal to enable the other terminal to perform D2D communication through the transmission resource.

The manner in which the configuration unit 304 configures the transmission resource to the other terminal specifically includes the following:

method one:

The configuration unit 304 includes:

The acquiring unit 304A is configured to acquire a resource pool allocated by the base station;

a first broadcast unit 304B, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

The first interaction unit 304C is configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool. .

Method 2:

The configuration unit 304 includes:

The first processing unit 304D is configured to automatically configure a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report.

a second broadcast unit 304E, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

The second interaction unit 304F is configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool. .

In the above technical solution, preferably, the configuration unit 304 further includes: a detecting unit 304G, configured to detect a data transmission delay and a signal transmission quality during D2D communication with the other terminal; the first processing unit The 304D is further configured to: when the detecting unit 304G detects that the data transmission delay in the D2D communication with the other terminal is greater than or equal to a preset delay value, And/or reconfiguring the resource pool when the signal transmission quality is less than or equal to a preset quality value.

Method three:

The configuration unit 304 includes: a measuring unit 304H, configured to measure a current channel quality indicator value of the terminal and/or a current buffer status;

The second processing unit 304I is configured to configure, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and is used to receive other terminals. When the resource configuration request is sent, the other terminal is allocated a transmission resource for reporting the current channel quality indicator value of the other terminal and/or the current buffer status report, for the other terminal to send the other terminal Current channel quality indicator value and/or current buffer status report, and

The second processing unit 304I is further configured to configure, according to the current channel quality indicator value of the other terminal and the current buffer status report sent by the other terminal, the transmission resource for performing D2D communication to the other terminal. .

In the above technical solution, preferably, the second processing unit 304I is further configured to: again configure, at each transmission time interval or every predetermined time duration, a transmission resource of the terminal for performing D2D communication, and the a transmission resource of the other terminal for performing D2D communication, wherein the predetermined duration is greater than the transmission time interval.

In the above technical solution, preferably, the method further includes: a selecting unit 306, configured to select, from the resource pool, a transmission resource that performs D2D communication with the other terminal.

In the foregoing technical solution, the configuration unit 304 is further configured to: configure, according to the current state information of the terminal, and/or the network condition that the terminal is currently located, to configure the other terminal to perform The mode of transmission resources for D2D communication. Specifically, the foregoing three resource configuration manners may be used separately, or may be flexibly switched and combined according to the current state information of the terminal and/or the network condition where the terminal is currently located. The current state information of the terminal includes: the time that the terminal waits for the resource configuration, the battery power of the terminal, and the like; the network conditions currently in which the terminal is located include: the channel quality of the D2D communication, the interference size, and the like.

The present invention also proposes a terminal (not shown) including: a resource configuration device 300 for D2D communication as shown in FIG.

The technical solution of the present invention will be described in detail below with reference to FIGS. 4A to 6B.

The main inventive contents of the present invention are as follows:

The relay UE (such as 104 in FIG. 1) can withstand the complexity of the signaling processing algorithm, and has the resource pool configuration and/or resource scheduling capability, and can configure the resource pool for itself and the remote UE (106 in FIG. 1). Or directly schedule transmission resources for themselves and the remote UE.

Considering the difference in processing capabilities of the relay UE, the present invention proposes the following resource configuration methods:

Mode A: The relay UE uses a pre-configured resource pool and is shared with the remote UE by means of broadcast or forwarding. The resource pool information should include time-frequency resources, transmission modes, and the like.

Mode B: The relay UE uses the resource pool configured by itself and is shared by the remote UE by means of broadcast or forwarding. The resource pool information should include time-frequency resources and transmission modes.

Mode C: The relay UE directly allocates transmission resources for itself and the remote UE. According to different scheduling time intervals, there are two methods: dynamic scheduling and semi-persistent scheduling (SPS).

In order to support the foregoing three resource configuration manners, a new RRC connection may be established on the secondary link, or an existing physical channel may be multiplexed, such as using PSBCH to transmit resource configuration information. At the same time, the foregoing three resource configuration modes need to transmit a signaling radio bearer (SRB) between the relay UE and the remote UE.

In addition, mode D: mixed resource allocation methods can also be adopted. Specifically, the foregoing three resource allocation modes have their own applicable occasions. When the channel conditions change or the user needs change, so that the current mode is not applicable, the transition to other resource allocation modes may be considered.

The following describes several resource allocation methods in detail:

Method A:

The relay UE uses the pre-configured resource pool, and the remote UE shares the resource pool. The resource pool information should include the time-frequency resource and the transmission mode. When the data needs to be sent, the relay UE and the remote UE are independent from the resource pool. Select the transmission resource.

The sharing of the pre-configured resource pool information may be implemented in the manner shown in FIG. 4A, that is, by relaying the broadcast of the UE, or in the manner shown in FIG. 4B, that is, the request of the remote UE to send the shared resource pool. The relay UE accepts the request and forwards the resource pool information.

The technical solution of mode A needs to establish a connection for transmitting resource allocation information on the secondary link, for example, establishing a new RRC connection, or multiplexing a current physical channel, such as a PSBCH.

This method avoids the resource pool configuration process and reduces the requirement for the relay UE resource configuration capability.

Method B:

In the technical solution of mode B, the relay UE needs to have certain signaling processing and resource configuration capabilities, and can configure a resource pool for itself and share the information with the remote UE. The resource pool information should include time-frequency resources and transmission modes. When data needs to be transmitted, both the relay UE and the remote UE autonomously select transmission resources from the resource pool.

Specifically, as shown in FIG. 5A, when the relay UE generates a periodic/trigger resource pool request, the relay UE may use the statistical information of the past time period (such as the relay UE measurement or the CQI (Channel Quality Indicator) of the remote UE feedback. The resource indicator, the BSR (Buffer Status Reports, and other information) configures the resource pool for itself, and then broadcasts the resource pool information to the remote UE.

As shown in FIG. 5B, after the UE is configured to allocate the resource pool, if the resource configuration request sent by the remote UE is received, the relay UE accepts the request and forwards the resource pool information.

Similarly, the technical solution of mode B needs to establish a connection for transmitting resource allocation information on the secondary link, for example, establishing a new RRC connection, or multiplexing the current physical channel.

In the resource configuration mode of mode B, the relay UE receives the aperiodic signal triggering, specifically, the delay of detecting the current D2D communication by the relay UE is large, and the currently measured SINR (Signal to Interference plus Noise Ratio, When the channel-to-interference plus noise ratio and the RSRQ (Reference Signal Receiving Quality) are low, the relay UE may be triggered to reconfigure the resource pool.

The technical solution of the mode B has the advantages of flexible resource configuration, and can select a time-frequency resource and a transmission mode with better performance according to information such as CQI and BSR measured in the recent long period of time, and the anti-interference ability is strong.

Method C:

In the technical solution of the mode C, the relay UE has a certain signaling processing capability and resource scheduling capability, and can generate its own transmission resource scheduling and the scheduling resource scheduling permission information of the remote UE.

Preferably, as shown in FIG. 6A, when the relay UE needs to perform resource scheduling, the transmission resource is scheduled according to the channel quality indication and the buffer status obtained by the self-measurement, and the data is sent on the resource.

As shown in FIG. 6B, when the remote UE side sends a resource scheduling request, the relaying UE first provides a small amount of scheduling grant resources for the remote UE, and the remote UE reports BSR and other information to the relaying UE on the resource, and relays the UE. According to this information, a scheduling grant of the remote UE is generated and transmitted to the remote UE through the PSCCH channel, and the remote UE transmits data on the permitted resource.

In the technical solution of the mode C, the relay UE may perform dynamic scheduling of scheduling in each TTI (Transmission Time Interval), or may use semi-persistent scheduling longer than one TTI time period. This scheme also requires establishing a connection for transmitting resource allocation information on the secondary link, such as establishing a new RRC connection, or multiplexing the current physical channel.

The technical solution of mode C can implement flexible resource configuration in different subframes and has strong anti-interference capability.

Compared with the above three methods, the mode A can establish a communication connection between the UEs quickly, and is suitable for the emergency communication scenario. The resource configuration modes of the mode B and the mode C are flexible and have strong resistance. The interference capability is applicable to a scenario where the sub-link channel conditions are complex, and the relay UE configuration is high, and the signaling processing capability is provided.

In addition, the present invention also proposes a mode D: a hybrid resource configuration scheme, which supports multiple resource configuration schemes at the same time, and can convert other schemes when the current scheme is not applicable, and the optional resource configuration scheme includes but is not limited to mode A. /B/C. For example, when the waiting time is too long or the battery power is low, it can be converted to mode A by mode B/C; when the channel conditions are complicated or the interference is large (including interference between different D2D pairs/groups, intra-cell interference, cell) When the communication quality is degraded, the mode A can be converted to the mode B/C.

The foregoing technical solution enables the D2D communication resource allocation in the relay scenario to be supported, and the resource configuration manner can be changed according to different scenarios, and the special requirements of the D2D communication are adapted.

Fig. 7 is a block diagram showing the structure of a terminal in accordance with a first embodiment of the present invention. As shown in FIG. 7, the terminal may include at least one transceiver 503, at least one processor 501, such as a CPU, a memory 504, and at least one communication bus 502.

The communication bus 502 is configured to connect the transceiver 503, the processor 501, and the memory 504.

The above memory 504 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 504 is further configured to store a set of program codes, and the transceiver 503 and the processor 501 are configured to call the program code stored in the memory 504, and perform the following operations:

In the foregoing technical solution, preferably, the step of the processor 501, when determining that the relay function of the D2D communication needs to be provided for the other terminal, the step of configuring the transmission resource for performing the D2D communication to the other terminal, specifically includes:

Obtaining a resource pool allocated by the base station;

Controlling the transceiver 503 to broadcast the resource pool for the other terminal to select the transmission resource from the resource pool; or

When receiving the resource allocation request sent by the other terminal by the transceiver 503, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.

When the transceiver 503 receives the resource allocation request sent by the other terminal, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.

The step of the processor 501 autonomously configuring a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report further includes: detecting, by the processor 501, the other terminal The resource pool is reconfigured when the data transmission delay during the D2D communication is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value.

In the above technical solution, preferably, the processor 501 is configured to perform D2D communication to the other terminal when determining that a relay function of D2D communication needs to be provided for the other terminal. The steps of transmitting resources specifically include:

And configuring, according to the current historical channel quality indicator value of the terminal, and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and receiving, when the transceiver device 503 receives a resource configuration request sent by another terminal, And allocating, to the other terminal, a transmission resource for reporting a current channel quality indicator value of the other terminal and/or a current buffer status report, where the other terminal sends the current channel quality indicator value of the other terminal and / or current buffer status report, and

In the above technical solution, preferably, the processor 501 is further configured to perform the following operations:

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention proposes a new resource configuration scheme for D2D communication, which can fully utilize the sub-link connection of D2D communication and realize transmission resources to other terminals. Flexible configuration effectively solves the problem of resource allocation in D2D communication.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present invention are intended to be included in the present invention. Within the scope of protection.

Claims

A resource configuration method for D2D communication, which is applicable to a terminal, and includes:

Determine whether it is necessary to provide relay functions for D2D communication for other terminals;

When it is determined that a relay function of D2D communication needs to be provided for the other terminal, a transmission resource for performing D2D communication is configured to the other terminal to enable the other terminal to perform D2D communication through the transmission resource.
The method for configuring a resource for D2D communication according to claim 1, wherein the step of configuring the transmission resource to the other terminal specifically includes:

Obtaining a resource pool allocated by the base station;

Broadcasting the resource pool for the other terminal to select the transmission resource from the resource pool; or

Upon receiving the resource allocation request sent by the other terminal, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.
The method for configuring a resource for D2D communication according to claim 1, wherein the step of configuring the transmission resource to the other terminal specifically includes:

Configuring a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or buffer status report;

Broadcasting the resource pool for the other terminal to select the transmission resource from the resource pool; or

Upon receiving the resource allocation request sent by the other terminal, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.
The resource configuration method for D2D communication according to claim 3, wherein the historical channel quality indicator value and/or the buffer status report comprises:

a channel quality indicator value and/or a buffer status report measured by the terminal, and a channel quality indicator value and/or a buffer status report reported by the other terminal.
A resource configuration method for D2D communication according to claim 3, characterized in that It also includes:

Detecting data transmission delay and signal transmission quality during D2D communication with the other terminal;

If the data transmission delay during the D2D communication with the other terminal is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value, the resource pool is reconfigured.
The method for configuring a resource for D2D communication according to claim 1, wherein the step of configuring the transmission resource to the other terminal specifically includes:

Measure a current channel quality indicator value of the terminal and/or a current buffer status;

And configuring, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication;

When receiving the resource configuration request sent by the other terminal, the other terminal is allocated a transmission resource for reporting the current channel quality indicator value of the other terminal and/or the current buffer status report, for the other terminal to send a current channel quality indicator value and/or a current buffer status report of the other terminal;

And allocating transmission resources for performing D2D communication to the other terminal according to the current channel quality indicator value of the other terminal and/or the current buffer status report sent by the other terminal.
The resource configuration method for D2D communication according to claim 6, further comprising:

Transmitting resources of the terminal for performing D2D communication and transmission resources of the other terminal for performing D2D communication are reconfigured at each transmission time interval or every predetermined time interval, wherein the predetermined duration is greater than The transmission time interval.
The resource configuration method for D2D communication according to any one of claims 2 to 5, further comprising:

A transmission resource for performing D2D communication with the other terminal is selected from the resource pool.
The resource configuration method for D2D communication according to any one of claims 1 to 7, wherein the transmission resource comprises: a time-frequency resource and a transmission mode.
The resource configuration method for D2D communication according to any one of claims 1 to 7, further comprising:

A mode of configuring a transmission resource for performing D2D communication to the other terminal is set according to current state information of the terminal and/or a network condition in which the terminal is currently located.
A resource configuration apparatus for D2D communication, which is applicable to a terminal, and includes:

a determining unit, configured to determine whether a relay function of D2D communication needs to be provided for other terminals;

a configuration unit, configured to: when the determining unit determines that a relay function of providing D2D communication for the other terminal is required, configuring, by the other terminal, a transmission resource for performing D2D communication, so that the other terminal passes the Transfer resources for D2D communication.
The resource configuration apparatus for D2D communication according to claim 11, wherein the configuration unit comprises:

An obtaining unit, configured to acquire a resource pool allocated by the base station;

a first broadcast unit, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

The first interaction unit is configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool.
The resource configuration apparatus for D2D communication according to claim 11, wherein the configuration unit comprises:

a first processing unit, configured to automatically configure a resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report;

a second broadcast unit, configured to broadcast the resource pool, for the other terminal to select the transmission resource from the resource pool; or

And a second interaction unit, configured to send the resource pool to the other terminal when the resource allocation request sent by the other terminal is received, so that the other terminal selects the transmission resource from the resource pool.
The resource configuration apparatus for D2D communication according to claim 13, wherein the historical channel quality indicator value and/or the buffer status report comprises:

a channel quality indicator value and/or a buffer status report measured by the terminal, and a channel quality indicator value and/or a buffer status report reported by the other terminal.
The resource configuration apparatus for D2D communication according to claim 13, wherein the configuration unit further comprises:

a detecting unit, configured to detect a data transmission delay and a signal transmission quality during D2D communication with the other terminal;

The first processing unit is further configured to: when the detecting unit detects that the data transmission delay in the D2D communication with the other terminal is greater than or equal to a preset delay value, and/or the signal transmission quality is less than Reconfigure the resource pool when it is equal to or equal to the preset quality value.
The resource configuration apparatus for D2D communication according to claim 11, wherein the configuration unit comprises:

a measuring unit, configured to measure a current channel quality indicator value of the terminal and/or a current buffer status;

a second processing unit, configured to configure, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and used to send the other terminal after receiving When the resource configuration request is made, the other terminal is allocated a transmission resource for reporting the current channel quality indicator value of the other terminal and/or the current buffer status report, so that the other terminal sends the current status of the other terminal. Channel quality indicator value and/or current buffer status report, and

The second processing unit is further configured to configure, according to the current channel quality indicator value of the other terminal and the current buffer status report sent by the other terminal, the transmission resource for performing D2D communication to the other terminal.
The resource configuration apparatus for D2D communication according to claim 16, wherein the second processing unit is further configured to:

Transmitting resources of the terminal for performing D2D communication and transmission resources of the other terminal for performing D2D communication are reconfigured at each transmission time interval or every predetermined time interval, wherein the predetermined duration is greater than The transmission time interval.
The resource configuration apparatus for D2D communication according to any one of claims 12 to 15, further comprising:

And a selecting unit, configured to select, from the resource pool, a transmission resource that performs D2D communication with the other terminal.
The resource configuration apparatus for D2D communication according to any one of claims 11 to 17, wherein the transmission resource comprises: a time-frequency resource and a transmission mode.
The resource configuration apparatus for D2D communication according to any one of claims 11 to 17, wherein the configuration unit is further configured to:

A mode of configuring a transmission resource for performing D2D communication to the other terminal is set according to current state information of the terminal and/or a network condition in which the terminal is currently located.
A terminal, comprising: a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The memory stores a set of program codes, and the processor calls the program code stored in the memory to perform the following operations:

Determine whether it is necessary to provide relay functions for D2D communication for other terminals;

When it is determined that a relay function of D2D communication needs to be provided for the other terminal, a transmission resource for performing D2D communication is configured to the other terminal to enable the other terminal to perform D2D communication through the transmission resource.
The terminal according to claim 21, wherein said processor, when determining that a relay function of D2D communication needs to be provided for said other terminal, configuring said transmission resource for performing D2D communication to said other terminal Specifically include:

Obtaining a resource pool allocated by the base station;

Controlling a transceiver device to broadcast the resource pool for the other terminal to select the transmission resource from the resource pool; or

And when the resource allocation request sent by the other terminal is received by the transceiver, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.
The terminal according to claim 21, wherein said processor, when determining that a relay function of D2D communication needs to be provided for said other terminal, configuring said transmission resource for performing D2D communication to said other terminal Specifically include:

Self-configured based on recorded historical channel quality indicator values and/or buffer status reports a resource pool for D2D communication;

Controlling a transceiver device to broadcast the resource pool for the other terminal to select the transmission resource from the resource pool; or

When the transceiver receives the resource allocation request sent by the other terminal, the resource pool is sent to the other terminal, so that the other terminal selects the transmission resource from the resource pool.
The terminal according to claim 23, wherein the historical channel quality indicator value and/or the buffer status report comprises:

a channel quality indicator value and/or a buffer status report measured by the terminal, and a channel quality indicator value and/or a buffer status report reported by the other terminal.
The terminal according to claim 23, wherein said processor, when determining that a relay function of D2D communication needs to be provided for said other terminal, configuring said transmission resource for performing D2D communication to said other terminal Specifically include:

Detecting data transmission delay and signal transmission quality during D2D communication with the other terminal;

The step of the processor independently configuring the resource pool for performing D2D communication according to the recorded historical channel quality indicator value and/or the buffer status report further includes: detecting, by the processor, performing D2D with the other terminal The resource pool is reconfigured when the data transmission delay during the communication is greater than or equal to the preset delay value, and/or the signal transmission quality is less than or equal to the preset quality value.
The terminal according to claim 21, wherein said processor, when determining that a relay function of D2D communication needs to be provided for said other terminal, configuring said transmission resource for performing D2D communication to said other terminal Specifically include:

Measure a current channel quality indicator value of the terminal and/or a current buffer status;

And configuring, according to the current historical channel quality indicator value of the terminal and/or the current buffer status, a transmission resource used by the terminal to perform D2D communication, and when the transceiver receives the resource configuration request sent by another terminal, Allocating, to the other terminal, a transmission resource for reporting a current channel quality indicator value of the other terminal and/or a current buffer status report, for the other terminal to send a current channel quality indicator value of the other terminal and/or Or current buffer status Report, and

And allocating transmission resources for performing D2D communication to the other terminal according to the current channel quality indicator value of the other terminal and/or the current buffer status report sent by the other terminal.
The terminal according to claim 26, wherein the processor is further configured to:

Transmitting resources of the terminal for performing D2D communication and transmission resources of the other terminal for performing D2D communication are reconfigured at each transmission time interval or every predetermined time interval, wherein the predetermined duration is greater than The transmission time interval.
The terminal according to any one of claims 22 to 25, wherein the processor is further configured to perform the following operations:

A transmission resource that performs D2D communication with the other terminal is selected in the resource pool.
The terminal according to any one of claims 21 to 27, wherein the transmission resource comprises: a time-frequency resource and a transmission mode.
The terminal according to any one of claims 21 to 27, wherein the processor is configured to perform D2D to the other terminal when determining that a relay function of D2D communication needs to be provided for the other terminal The steps of the transmission resource of the communication specifically include:

A mode of configuring a transmission resource for performing D2D communication to the other terminal is set according to current state information of the terminal and/or a network condition in which the terminal is currently located.