CN104995976A

CN104995976A - Base station, terminal, resource allocation method and system

Info

Publication number: CN104995976A
Application number: CN201380032916.9A
Authority: CN
Inventors: 张祺智; 夏亮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-26
Filing date: 2013-12-26
Publication date: 2015-10-21
Anticipated expiration: 2033-12-26
Also published as: CN104995976B; WO2015096103A1

Abstract

Provided are a base station, a terminal, and a resource allocation method and a system, relating to the field of wireless communications. The base station comprises: a request reception module, a resource determination module, a first resource allocation module, a first resource sending module and a second resource sending module. After receiving a request to establish an end to end (D2D) communication with a second terminal which is sent by a first terminal, by way of determining resources which may be multiplexed by the first terminal and the second terminal and allocating target resources from multiplex resources, the present invention solves the problem in the prior art that the situation of no idle D2D resources for allocation may arise when there are many terminals requesting to establish a D2D communication within a coverage area of the base station, and achieves the purpose of improving the resource utilization rate and system capacity.

Description

Base station, terminal, resource allocation method and system

Specification base station, terminal, resource allocation methods and systems technology field

The present invention relates to wireless communication field, more particularly to a kind of base station, terminal, resource allocation methods and system.Background technology

Device-to-Device (D2D, end-to-end) communications are one kind under system control, it is allowed to the technology directly communicated between terminal.In D2D communications, in order to avoid the interference between each terminal, base station is needed for the respective D2D resources of each D2D terminal distributions.

In existing D2D resource allocation methods, base station divides a part of communication resource as D2D resources in advance；When first terminal finds that the second terminal of D2D communications can be carried out, sent to base station and set up the request that D2D communicates with second terminal；Base station is received after the request, and idling-resource is whether there is in detection D2D resources, if so, then by some or all of first terminal that is assigned as in the idling-resource to the resource of second terminal transmission D2D signals of communication.

During the present invention is realized, inventor has found that prior art at least has problems with：Available for the resource-constrained for carrying out D2D communications, when the terminal quantity that D2D communications are carried out in base station range is more, the situation for being available for distributing to the terminal that D2D communications are set up in new request without idle D2D resources is likely to occur, resource utilization is not high, and power system capacity is low.The content of the invention

In order to solve in the prior art when the terminal quantity that D2D communications are carried out in base station range is more, the problem of being available for distributing to the situation for the terminal that D2D communications are set up in new request without idle D2D resources is likely to occur, the embodiments of the invention provide a kind of base station, terminal, resource allocation methods and system.The technical scheme is as follows：

First aspect includes there is provided a kind of base station, the base station：

Request receiving module, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

Resource determination module, for being determined in the allocated D2D resources by the first terminal The recoverable resources being multiplexed with the second terminal；

First resource distribute module, for distributing target resource from the recoverable resources；

First resource sending module, for the target resource to be sent into the first terminal, D2D signals of communication are sent by the first terminal according to the target resource；

Secondary resource sending module, for the target resource to be sent into the second terminal, D2D signals of communication are received by the second terminal according to the target resource.

In the first possible implementation of first aspect, the resource determination module, including：First instruction sending unit, is instructed for sending first to third terminal, and described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

First response receiving unit, for receiving the first response that the third terminal is returned, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

Second instruction sending unit, if the signal quality for indicating the discovery signal that the third terminal is listened to for the described first response is less than the predetermined quality threshold value, the second instruction for including first resource is then sent to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；

Second response receiving unit, for receiving the second response that the second terminal is returned, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

First determining unit, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response received, the first resource is defined as the recoverable resources.

With reference to the first possible implementation of first aspect, in second of possible implementation of first aspect, the first response receiving unit, for receiving the first response frame for including first response that the third terminal is sent, first response frame be the third terminal receive it is described first instruction after, according to the first resource send first D2D communication frame.

In the third possible implementation of first aspect, the resource determination module, including：3rd instruction sending unit, the 3rd instruction of Secondary resource is included for being sent to the second terminal, and the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication； 3rd response receiving unit, for receiving the 3rd response that the second terminal is returned, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

4th instruction sending unit, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the described 3rd response is less than the predetermined strength threshold value, then send the 4th to the 4th terminal to instruct, the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

4th response receiving unit, for receiving the 4th response that the 4th terminal is returned, whether the described 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；

Second determining unit, if indicating that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value for the 4th response received, the recoverable resources is defined as by the Secondary resource.

With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, the 4th response receiving unit, for receiving the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal receive it is described 4th instruction after, according to the Secondary resource send first D2D communication frame.

In the first possible implementation with reference to first aspect, first aspect, second of first aspect may implementation, the 4th kind of possible implementation of the third possible implementation or first aspect of first aspect, in the 5th kind of possible implementation of first aspect, the base station also includes：

First detection module, is distributed after target resource, whether the target resource is sufficient for detecting from the recoverable resources；

Second detection module, if the testing result for the first detection module is not enough for the target resource, is detected whether in the presence of idle D2D resources；

Secondary resource distribute module, if the testing result for second detection module is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources.

In the first possible implementation with reference to first aspect, first aspect, second of first aspect may implementation, the 4th kind of possible implementation of the third possible implementation or first aspect of first aspect, in the 6th kind of possible implementation of first aspect, the base station also includes：

3rd detection module, for before the first resource distribute module distributes target resource from the recoverable resources, detecting whether in the presence of idle D2D resources； Information resources distribute module, if the testing result for the 3rd detection module is the presence of the free time

D2D resources, then distribute the target resource from the idle D2D resources；

4th detection module, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The first resource distribute module, if the testing result for the 4th detection module is not enough for the target resource, the step of performing the distribution target resource from the recoverable resources.

Second aspect includes there is provided a kind of base station, the base station：Receiver, processor and emitter；The receiver, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

The processor, for being determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources；

The processor, for distributing target resource from the recoverable resources；

The processor, the first terminal and the second terminal are sent to for controlling the emitter by the target resource, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In the first possible implementation of second aspect, the processor is instructed for controlling the emitter to send first to third terminal, and described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

The receiver, for receiving the first response that the third terminal is returned, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；The processor, if the signal quality for indicating the discovery signal that the third terminal is listened to for the described first response is less than the predetermined quality threshold value, the emitter is then controlled to send the second instruction for including first resource to the second terminal, the first resource is to have distributed to the third terminal to receive

The D2D resources of D2D signals of communication, described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；

The receiver, for receiving the second response that the second terminal is returned, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

The processor, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response that the receiver is received, the first resource is defined as the recoverable resources. With reference to the first possible implementation of second aspect, in second of possible implementation of second aspect, the receiver, for receiving the first response frame for including first response that the third terminal is sent, first response frame be the third terminal receive it is described first instruction after, according to the first resource send first D2D communication frame.

In the third possible implementation of second aspect, the processor, include the 3rd instruction of Secondary resource for controlling the emitter to be sent to the second terminal, the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；

The receiver, for receiving the 3rd response that the second terminal is returned, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

The processor, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the described 3rd response is less than the predetermined strength threshold value, the emitter is then controlled to send the 4th instruction to the 4th terminal, the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

The receiver, for receiving the 4th response that the 4th terminal is returned, whether the described 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；The processor, if indicating that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value for the 4th response that the receiver is received, the recoverable resources is defined as by the Secondary resource.

With reference to the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, institute's receiver, for receiving the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal receive it is described 4th instruction after, according to the Secondary resource send first D2D communication frame.

In the first possible implementation with reference to second aspect, second aspect, second of second aspect may implementation, the 4th kind of possible implementation of the third possible implementation or second aspect of second aspect, in the 5th kind of possible implementation of second aspect, the processor, it is additionally operable to detection to distribute after target resource from the recoverable resources, whether the target resource is sufficient；

The processor, if being that the target resource is not enough for testing result, is detected whether in the presence of idle D2D resources；

The processor, if being the presence of idle D2D resources for testing result, from described idle The target resource is distributed in D2D resources.

In the first possible implementation with reference to second aspect, second aspect, second of second aspect may implementation, the 4th kind of possible implementation of the third possible implementation or second aspect of second aspect, in the 6th kind of possible implementation of second aspect, the processor, for before target resource is distributed from the recoverable resources, detecting whether in the presence of idle D2D resources；

The processor, if being the presence of idle D2D resources for testing result, the target resource is distributed from the idle D2D resources；

The processor, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The processor, if being that the target resource is not enough for testing result, the step of performing the distribution target resource from the recoverable resources.

The third aspect is there is provided first terminal, and the first terminal includes：

Request sending module, for being sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；

First resource receiving module, for receiving the target resource that the base station is sent；

Signal of communication sending module, for sending D2D signals of communication to the second terminal according to the target resource.

In the first possible implementation of the third aspect, the first terminal also includes：

It was found that signal transmitting module, sends for periodicity and finds signal.

Fourth aspect is there is provided first terminal, and the first terminal includes：Processor, transmitter and receiver；

The processor, for controlling the emitter to be sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；

The receiver, for receiving the target resource that the base station is sent；

The processor, for control the emitter according to the target resource to the second terminal send D2D signals of communication.

In the first possible implementation of fourth aspect, the processor is additionally operable to control the transmitting Machine periodically sends and finds signal.

5th aspect is there is provided second terminal, and the second terminal includes：

Secondary resource receiving module, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

Signal of communication receiving module, for receiving the D2D signals of communication that the first terminal is sent according to the target resource.

In the first possible implementation of the 5th aspect, the second terminal also includes：

Second command reception module, for before the Secondary resource receiving module receives the target resource that base station is sent, the second instruction for including first resource that the base station is sent is received, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

First monitors module, for monitoring D2D signals of communication according to the first resource；

5th detection module, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

Second response sending module, is responded for sending second to the base station according to first testing result, and whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

In second of possible implementation of the 5th aspect, the second terminal also includes：

3rd command reception module, for before the Secondary resource receiving module receives the target resource that base station is sent, the 3rd instruction for including Secondary resource that the base station is sent is received, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

Second monitors module, for monitoring D2D signals of communication according to the Secondary resource；

6th detection module, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

3rd response sending module, is responded for sending the 3rd to the base station according to second testing result, and whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

6th aspect is there is provided second terminal, and the second terminal includes：Receiver and processor；The receiver, for receive base station transmission target resource, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, The recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The processor, for controlling the receiver to receive the D2D signals of communication of the first terminal transmission according to the target resource.

In the first possible implementation of the 6th aspect, the second terminal also includes：Emitter；The receiver, is additionally operable to before the target resource that reception base station is sent, and receives the second instruction for including first resource that the base station is sent, the first resource is to have distributed to third terminal to receive

The D2D resources of D2D signals of communication；

The processor, for controlling the receiver according to first resource monitoring D2D signals of communication；The processor, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

The processor, responded for controlling the emitter to send second to the base station according to first testing result, whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

In second of possible implementation of the 6th aspect, the second terminal also includes：Emitter；The receiver, for before the target resource that base station is sent is received, receiving the 3rd instruction for including Secondary resource that the base station is sent, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

The processor, for controlling the receiver according to Secondary resource monitoring D2D signals of communication；The processor, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

The processor, for controlling the emitter according to second testing result to the base station the 3rd response of transmission, whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

7th aspect is there is provided third terminal, and the third terminal includes：

First command reception module, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

3rd monitors module, for monitoring the discovery signal that the first terminal is sent；

7th detection module, the signal quality for detecting the discovery signal that the 3rd monitoring module is listened to, obtains the 3rd testing result； First response sending module, is responded for sending first to the base station according to the 3rd testing result；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

In the first possible implementation of the 7th aspect, the first response sending module, include the first response frame of first response for being sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

Eighth aspect is there is provided third terminal, and the third terminal includes：Receiver, processor and emitter；

The receiver, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；The processor, for controlling the receiver to monitor the discovery signal that the first terminal is sent；The processor, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 3rd testing result；

The processor, is responded for controlling the emitter to send first to the base station according to the 3rd testing result；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal； Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

In the first possible implementation of eighth aspect, the processor, include the first response frame of first response for controlling the emitter to be sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

9th aspect is there is provided the 4th terminal, and the 4th terminal includes：

4th command reception module, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

4th monitors module, for monitoring the discovery signal that the first terminal is sent；

8th detection module, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

4th response sending module, is responded for sending the 4th to the base station according to the 4th testing result；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In the first possible implementation of the 9th aspect, the 4th response sending module, include the second response frame of the 4th response for being sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

Tenth aspect is there is provided the 4th terminal, and the 4th terminal includes：Receiver, processor and transmitting Machine；

The receiver, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

The processor, for controlling the receiver to monitor the discovery signal that the first terminal is sent；The processor, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

The processor, for control the emitter according to the 4th testing result to the base station send the 4th response；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In the first possible implementation of the tenth aspect, the processor, include the second response frame of the 4th response for controlling the emitter to be sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

Tenth one side is there is provided a kind of resource allocation methods, in base station, methods described to include：What reception first terminal was sent is used to set up the request that end-to-end D2D communicates with second terminal；The recoverable resources by the first terminal and second terminal multiplexing is determined in the allocated D2D resources；

Target resource is distributed from the recoverable resources；

The target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal. In the first possible implementation of the tenth one side, the recoverable resources being determined in the allocated D2D resources by the first terminal and second terminal multiplexing, including：

First is sent to third terminal to instruct, described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

The first response that the third terminal is returned is received, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

If first response indicates that the signal quality for the discovery signal that the third terminal is listened to is less than the predetermined quality threshold value, the second instruction for including first resource is then sent to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；The second response that the second terminal is returned is received, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；If second response received indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value, the first resource is defined as the recoverable resources.

With reference to the first possible implementation of the tenth one side, in second of possible implementation of the tenth one side, first response for receiving the third terminal return, including：

Receive the first response frame for including first response that the third terminal is sent, first response frame be the third terminal after first instruction is received, the first D2D communication frame sent according to the first resource.

In the third possible implementation of the tenth one side, the recoverable resources being determined in the allocated D2D resources by the first terminal and second terminal multiplexing, including：

The 3rd instruction for including Secondary resource is sent to the second terminal, the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；

The 3rd response that the second terminal is returned is received, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；If the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value, then send the 4th to the 4th terminal to instruct, the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

The 4th response that the 4th terminal is returned is received, the described 4th responds for indicating the 4th terminal Whether the signal quality of the discovery signal listened to is less than predetermined quality threshold value；

If the 4th response received indicates that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value, the Secondary resource is defined as the recoverable resources.

With reference to the third possible implementation of the tenth one side, in the 4th kind of possible implementation of the tenth one side, the 4th response for receiving the 4th terminal return, including：

Receive the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

With reference to the tenth on the one hand, in the first possible implementation of first aspect, second of the tenth one side may implementation, the third possible implementation of the tenth one side or the tenth one side the 4th kind of possible implementation, in the 5th kind of possible implementation of the tenth one side, methods described also includes：Detection is distributed after target resource from the recoverable resources, and whether the target resource is sufficient；If testing result is that the target resource is not enough, detect whether in the presence of idle D2D resources；If testing result is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources.

With reference to the tenth on the one hand, in the first possible implementation of the tenth one side, second of the tenth one side may implementation, the third possible implementation of the tenth one side or the tenth one side the 4th kind of possible implementation, in the 6th kind of possible implementation of the tenth one side, described to be distributed from the recoverable resources before target resource, methods described also includes：

Detect whether in the presence of idle D2D resources；

If testing result is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources；

Detection is distributed after the target resource from the idle D2D resources, and whether the target resource is sufficient；

If testing result is that the target resource is not enough, the step of performing the distribution target resource from the recoverable resources.

12nd aspect is there is provided a kind of resource allocation methods, in first terminal, methods described to include：Sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；

Receive the target resource that the base station is sent； D2D signals of communication are sent to the second terminal according to the target resource.

In the first possible implementation of the 12nd aspect, methods described also includes：

Periodically send and find signal.

13rd aspect is there is provided a kind of resource allocation methods, in second terminal, methods described to include：Receive the target resource that base station is sent, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The D2D signals of communication that the first terminal is sent are received according to the target resource.

In the first possible implementation of the 13rd aspect, before the target resource that the reception base station is sent, methods described also includes：

The second instruction for including first resource that the base station is sent is received, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

D2D signals of communication are monitored according to the first resource；

The signal intensity of the D2D signals of communication listened to according to the first resource is detected, the first testing result is obtained；

Second is sent according to first testing result to the base station to respond, whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.In second of possible implementation of the 13rd aspect, before the target resource that the reception base station is sent, methods described also includes：

The 3rd instruction for including Secondary resource that the base station is sent is received, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

D2D signals of communication are monitored according to the Secondary resource；

The signal intensity of the D2D signals of communication listened to according to the Secondary resource is detected, the second testing result is obtained；

The 3rd is sent according to second testing result to the base station to respond, whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

Fourteenth aspect is there is provided a kind of resource allocation methods, in third terminal, methods described to include：Receive the first instruction that base station is sent, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

Monitor the discovery signal that the first terminal is sent； The signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 3rd testing result；First is sent according to the 3rd testing result to the base station to respond；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

It is described that first response is sent to the base station according to the 3rd testing result in the first possible implementation of fourteenth aspect, including：

The first response frame for including first response is sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

15th aspect is there is provided a kind of resource allocation methods, in the 4th terminal, methods described to include：Receive the 4th instruction that base station is sent；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

Monitor the discovery signal that the first terminal is sent；

The signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 4th testing result；

The 4th is sent according to the 4th testing result to the base station to respond；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；, will when the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value The Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

It is described that 4th response is sent to the base station according to the 4th testing result in the first possible implementation of the 15th aspect, including：

The second response frame for including the 4th response is sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

16th aspect is there is provided a kind of resource allocation system, and the system includes：

Base station, first terminal, second terminal and at least one third terminal and/or at least one the 4th terminal described in terms of as described above.

The beneficial effect of technical scheme provided in an embodiment of the present invention is：

By receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly, the accompanying drawing used required in being described below to embodiment is made cylinder and singly introduced, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the equipment pie graph for the base station that one embodiment of the invention is provided；

Fig. 2 is the equipment pie graph for the base station that another embodiment of the present invention is provided；

Fig. 3 is the equipment pie graph for the base station that further embodiment of this invention is provided；

Fig. 4 is the equipment pie graph for the base station that yet another embodiment of the invention is provided；

Fig. 5 is the equipment pie graph for the first terminal that one embodiment of the invention is provided；

Fig. 6 is the equipment pie graph for the first terminal that another embodiment of the present invention is provided；

Fig. 7 is the equipment pie graph for the first terminal that further embodiment of this invention is provided；

Fig. 8 is the equipment pie graph for the first terminal that yet another embodiment of the invention is provided； Fig. 9 is the equipment pie graph for the second terminal that one embodiment of the invention is provided；

Figure 10 is the equipment pie graph for the second terminal that another embodiment of the present invention is provided；

Figure 11 is the equipment pie graph for the second terminal that further embodiment of this invention is provided；

Figure 12 is the equipment pie graph for the second terminal that yet another embodiment of the invention is provided；

Figure 13 is the equipment pie graph for the third terminal that one embodiment of the invention is provided；

Figure 14 is the equipment pie graph for the third terminal that another embodiment of the present invention is provided；

Figure 15 is the equipment pie graph for the third terminal that further embodiment of this invention is provided；

Figure 16 is the equipment pie graph for the third terminal that yet another embodiment of the invention is provided；

Figure 17 is the equipment pie graph for the 4th terminal that one embodiment of the invention is provided；

Figure 18 is the equipment pie graph for the 4th terminal that another embodiment of the present invention is provided；

Figure 19 is the equipment pie graph for the 4th terminal that further embodiment of this invention is provided；

Figure 20 is the equipment pie graph for the 4th terminal that yet another embodiment of the invention is provided；

Figure 21 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 22 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 23 is the method flow diagram for the resource allocation methods that further embodiment of this invention is provided；

Figure 24 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 25 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 26 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 27 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 28 is the method flow diagram for the resource allocation methods that further embodiment of this invention is provided；

Figure 29 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 30 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 31 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 32 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 33 is the method flow diagram for the resource allocation methods that one embodiment of the invention is provided；

Figure 34 is the method flow diagram for the resource allocation methods that another embodiment of the present invention is provided；

Figure 35 is the system pie graph for the resource allocation system that one embodiment of the invention is provided.Embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail. Fig. 1 is referred to, the equipment pie graph of the base station provided it illustrates one embodiment of the invention.The base station can be used for the terminal distribution D2D resources for request D2D communications.The base station can include：

Request receiving module 101, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

Resource determination module 102, for the recoverable resources for being determined to be multiplexed by the first terminal and the second terminal in the allocated D2D resources；

Wherein, the recoverable resources is to be assigned to receive the signal quality of the discovery signal that the first terminals that receive of terminal of D2D communications is sent to be less than predetermined quality threshold value, and the signal intensity of D2D signals of communication that receives according to this of second terminal is less than the resource of predetermined strength threshold value.

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.

First resource distribute module 103, for distributing target resource from the recoverable resources；

First resource sending module 104, for the target resource to be sent into the first terminal, D2D signals of communication are sent by the first terminal according to the target resource；

Secondary resource sending module 105, for the target resource to be sent into the second terminal, D2D signals of communication are received by the second terminal according to the target resource.

In summary, base station provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Fig. 2 is referred to, the equipment pie graph of the base station provided it illustrates another embodiment of the present invention.The base station can be used for distributing the D2D resources for sending D2D signals of communication to second terminal for the first terminal of request D2D communications.The base station can include：

Request receiving module 201, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

Discovery signal can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications Discovery signals, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, can send the request that D2D communications are carried out with the second terminal to base station.

Resource determination module 202, for the recoverable resources for being determined to be multiplexed by the first terminal and the second terminal in the allocated D2D resources；

Wherein, the recoverable resources is to be assigned to receive the signal quality of the discovery signal that the terminals of D2D communications receives first terminal transmission to be less than predetermined quality threshold value, and the signal intensity of D2D signals of communication that receives according to this of second terminal is less than the resource of predetermined strength threshold value.The D2D resources can be running time-frequency resource.

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal.

The previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, each D2D terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal that the parsing accuracy rate is sent as the first terminal received.

Wherein, the discovery signal that first terminal is sent may be found disturbing for signal by other terminal transmissions.What receiving terminal was received is the mixed signal for finding signal and interference signal that first terminal is sent, if using signal intensity as foundation, receiving terminal can only measure the intensity of this mixed signal, the signal intensity of the discovery signal of first terminal can not be represented, therefore, the embodiment of the present invention sets judgment threshold according to the signal quality of the discovery signal of first terminal, it is possible to increase the accuracy of judgement.

During interference of the second terminal on allocated D2D resources are detected, need detection is total interference on a certain running time-frequency resource, need not distinguish between which D2D terminal the interference comes from, therefore it may only be necessary to detect the signal intensity of the signal of communication received according to allocated D2D resources.

First resource distribute module 203, for distributing target resource from the recoverable resources；

Base station distribution portion or whole resources can be used as target resource from all qualified recoverable resources. First resource sending module 204, for the target resource to be sent into the first terminal, D2D signals of communication are sent by the first terminal according to the target resource；

Secondary resource sending module 205, for the target resource to be sent into the second terminal, D2D signals of communication are received by the second terminal according to the target resource.

The resource determination module 202, including：

First instruction sending unit 202a, for third terminal send first instruct, this first instruct for indicate the third terminal monitor the first terminal transmission discovery signal；

Whether the first response receiving unit 202b, the first response for receiving third terminal return, first signal quality responded for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

Second instruction sending unit 202c, if indicating that the signal quality for the discovery signal that the third terminal is listened to is less than the predetermined quality threshold value for first response, the second instruction for including first resource is then sent to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and this second instructs and monitor D2D signals of communication for indicating the second terminal according to the first resource；Whether the second response receiving unit 202d, the second response for receiving second terminal return, second signal intensity responded for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

First determining unit 202e, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response received, the recoverable resources is defined as by the first resource.

Wherein, the detection ordering of above-mentioned two condition can be configured according to actual conditions, can first detect first condition, then detect second condition；Second condition can also be first detected, then detects first condition.

First condition is detected in the ban, when detecting second condition again, base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, and second terminal is received after second instruction, monitored according to the Secondary resource The D2D signals of communication that other terminals are sent by the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

It should be noted that, in the response that second terminal or D2D terminals are returned to base station, the signal quality of the intensity of the D2D signals of communication listened to or the discovery signal of first terminal directly can be sent to base station, detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value by base station；Second terminal or D2D terminals can also first detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

First response receiving unit 202b, the first response frame for including first response for receiving third terminal transmission, first response frame be the third terminal receive this first instruction after, according to the first resource send first D2D communication frame.

The resource determination module 202, including：

3rd instruction sending unit 202f, the 3rd instruction of Secondary resource is included for being sent to the second terminal, and the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；

Whether the 3rd response receiving unit 202g, the 3rd response for receiving second terminal return, the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

4th instruction sending unit 202h, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the 3rd response is less than the predetermined strength threshold value, then send the 4th to the 4th terminal to instruct, the 4th instructs the discovery signal for indicating the 4th terminal monitoring first terminal transmission；

Whether the 4th response receiving unit 202i, the 4th response for receiving the return of the 4th terminal, the 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；

Second determining unit 202j, if the 4th response for receiving indicates that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value, the recoverable resources is defined as by the Secondary resource.

Second condition is detected in the ban, then when detecting first condition, currently allocated D2D resources can be sent to second terminal by base station by high-level signaling, and the D2D resources that second terminal is sent according to base station are supervised Listen D2D signals of communication, and return to the 3rd response to base station according to snoop results, base station in response to determining that the D2D resources that the signal intensity for the D2D signals of communication that second terminal is received according to this is less than predetermined strength threshold value are Secondary resource, and will distribute the Secondary resource and to receive the terminal of D2D signals of communication be defined as the 4th terminal according to the 3rd.Base station sends the 4th to the 4th terminal and instructed, 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th response to base station according to snoop results, the signal quality that base station in the 4th terminal, will listen to the discovery signal of first terminal transmission according to the 4th response is defined as recoverable resources less than the corresponding resource to receive D2D signals of communication of terminal of predetermined quality threshold value.

4th response receiving unit 202i, the second response frame for including the 4th response for receiving the transmission of the 4th terminal, second response frame be the 4th terminal receive the 4th instruction after, according to the Secondary resource send first D2D communication frame.

Wherein, the terminal of D2D resources has been assigned to during the return response of base station, can be by allocated, resource to send D2D signals is responded to base station return, such as, the response for returning to base station can be carried in first OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol in the first D2D communication frame sent after receiving the first instruction or the 4th instruction.Base station is after the first instruction or the 4th instruction is sent, receive the first D2D communication frame sent according to the allocated D2D resources, and first OFDM symbol in the D2D communication frames received is parsed, to obtain the first response or the 4th response of the return of each D2D terminal.

Furthermore, it is necessary to which explanation, second terminal can be by base station dynamic configuration to used resource when the response of base station return second or the 3rd response.

The base station also includes：

First detection module 206, is distributed after target resource, whether the target resource is sufficient for detecting from the recoverable resources；

Second detection module 207, if the testing result for the first detection module 206 is not enough for the target resource, is detected whether in the presence of idle D2D resources；

Secondary resource distribute module 208, if the testing result for second detection module 207 is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources.

Base station can combine actual conditions, and distribution portion resource or whole resources are used as target resource from idle D2D resources.

When distributing D2D resources, base station can contemplate the D2D resources for first distributing the free time, when being available for distribution without idle D2D resources, consider further that the allocated D2D resources of multiplexing；Or, base station can be first Allocated D2D resources are multiplexed, when not being available for the D2D resources of multiplexing, idle D2D resources of reallocating.

Such as, if base station first considers that multiplexing has distributed D2D resources, consider further that the idle D2D resources of distribution, then base station is distributed after target resource from recoverable resources, it can detect whether target resource is enough, if enough, the D2D resources for free time of not reallocating, otherwise, target resource is further distributed from idle D2D resources.

The base station also includes：

3rd detection module 209, for before the first resource distribute module 203 distributes target resource from the recoverable resources, detecting whether in the presence of idle D2D resources；

Information resources distribute module 210, if the testing result for the 3rd detection module 209 is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources；

Likewise, base station can combine actual conditions, distribution portion resource or whole resources are used as target resource from idle D2D resources.

4th detection module 211, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The first resource distribute module 203, if the testing result for the 4th detection module 211 is not enough for the target resource, performs the step of should distributing target resource from the recoverable resources.

If base station first considers the idle D2D resources of distribution, consider further that the allocated D2D resources of multiplexing, then when base station from recoverable resources before target resource is distributed, first detect whether available free D2D resources, if so, then target resource is distributed from idle D2D resources, if from idle D2D resources after distribution target resource, the target resource is still not enough, then further distributes target resource from reusable resource.In addition, if the target resource distributed from idle D2D resources is enough, the step of base station can be without follow-up determination recoverable resources, so as to save system resource, reduces consumption.

Or, base station to second terminal when sending the 3rd instruction, allocated D2D resources and idle D2D resources can be all sent to second terminal, second terminal monitors D2D signals of communication according to whole D2D resources, and return to the 3rd response to base station according to snoop results, base station determines that the signal intensity for the D2D signals of communication that second terminal is received according to this is less than in the resource of predetermined strength threshold value, with the presence or absence of idle resource, if, it is then preferential to distribute target resource from idle resource, if the inadequate resource without idle resource or free time, then base station is further performed to the step of the 4th instruction of transmission of the 4th terminal.

In summary, base station provided in an embodiment of the present invention, by receiving what first terminal was sent, sets up after the request that end-to-end D2D communicates with second terminal, first is determined in the allocated D2D resources Terminal and the reusable resource of second terminal, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 3 is referred to, the equipment pie graph of the base station provided it illustrates further embodiment of this invention.The base station can be used for the terminal distribution D2D resources for request D2D communications.The base station can include：Receiver 001, processor 002 and emitter 003;

The receiver 001, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

The processor 002, for the recoverable resources for being determined to be multiplexed by the first terminal and the second terminal in the allocated D2D resources；

The processor 002, for distributing target resource from the recoverable resources；

The processor 002, the first terminal and the second terminal are sent to for controlling the emitter 003 by the target resource, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, base station provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Fig. 4 is referred to, the equipment pie graph of the base station provided it illustrates yet another embodiment of the invention.The base station can be used for distributing the D2D resources for sending D2D signals of communication to second terminal for the first terminal of request D2D communications.The base station can include：Receiver 004, processor 005 and emitter 006;

The receiver 004, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

Specifically, discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, D2D can be carried out to base station transmission and the second terminal logical The request of letter.

The processor 005, for the recoverable resources for being determined to be multiplexed by the first terminal and the second terminal in the allocated D2D resources；

Wherein, the recoverable resources is to be assigned to receive the signal quality of the discovery signal that the first terminals that receive of terminal of D2D communications is sent to be less than predetermined quality threshold value, and the signal intensity of D2D signals of communication that receives according to this of second terminal is less than the resource of predetermined strength threshold value.The D2D resources can be running time-frequency resource.

And during the interference for the signal that second terminal is received in detection according to allocated D2D resources, need detection is total interference on a certain running time-frequency resource, need not distinguish between which D2D terminal the interference comes from, therefore it may only be necessary to detect the signal intensity of the signal of communication received according to allocated D2D resources.

The processor 005, for distributing target resource from the recoverable resources；

Base station distribution portion or whole resources can be used as target resource from all qualified recoverable resources.

The processor 005, for control the emitter 006 by the target resource be sent to the first terminal and The second terminal, sends D2D signals of communication, and receive D2D signals of communication according to the target resource by the second terminal by the first terminal according to the target resource.

The processor 005, for control the emitter 005 to third terminal send first instruct, this first instruct for indicate the third terminal monitor the first terminal transmission discovery signal；

Whether the receiver 004, the first response for receiving third terminal return, first signal quality responded for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

The processor 005, if indicating that the signal quality for the discovery signal that the third terminal is listened to is less than the predetermined quality threshold value for first response, the emitter is then controlled to send the second instruction for including first resource to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and this second instructs and monitor D2D signals of communication for indicating the second terminal according to the first resource；

Whether the receiver 004, the second response for receiving second terminal return, second signal intensity responded for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

The processor 005, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response that the receiver 004 is received, the first resource is defined as the recoverable resources.

First condition is detected in the ban, when detecting second condition again, base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources. It should be noted that, in the response that D2D terminals or second terminal are returned to base station, the signal quality of the intensity of the D2D signals of communication listened to or the discovery signal of first terminal directly can be sent to base station, detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value by base station；Or, D2D terminals or second terminal can also first detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

The receiver 004, for receive the third terminal transmission include this first response the first response frame, first response frame be the third terminal receive this first instruction after, according to the first resource send first D2D communication frame.

The processor 005, the 3rd instruction of Secondary resource is included for controlling the emitter 006 to be sent to the second terminal, and the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；Whether the receiver 004, the 3rd response for receiving second terminal return, the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

The processor 005, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the 3rd response is less than the predetermined strength threshold value, the emitter is then controlled to send the 4th instruction to the 4th terminal, the 4th instructs the discovery signal for indicating the 4th terminal monitoring first terminal transmission；

Whether the receiver 004, the 4th response for receiving the return of the 4th terminal, the 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；

The processor 005, if indicating that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value for the 4th response that the receiver 004 is received, the recoverable resources is defined as by the Secondary resource.

Second condition is detected in the ban, when detecting first condition again, currently allocated D2D resources can be sent to second terminal by base station by high-level signaling, the D2D resources that second terminal is sent according to base station monitor D2D signals of communication, and return to the 3rd response to base station according to snoop results, base station in response to determining that the D2D resources that the signal intensity for the D2D signals of communication that second terminal is received according to this is less than predetermined strength threshold value are Secondary resource, and will distribute the Secondary resource and to receive the terminal of D2D signals of communication be defined as the 4th terminal according to the 3rd.Base station sends the 4th to the 4th terminal and instructed, and the 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th sound to base station according to snoop results Should, the signal quality that base station in the 4th terminal, will listen to the discovery signal of first terminal transmission according to the 4th response is defined as recoverable resources less than the corresponding resource to receive D2D signals of communication of terminal of predetermined quality threshold value.

The receiver 004, for receive the 4th terminal transmission include the 4th response the second response frame, second response frame be the 4th terminal receive the 4th instruction after, according to the Secondary resource send first D2D communication frame.

The processor 005, is additionally operable to detection and is distributed from the recoverable resources after target resource, whether the target resource is sufficient；

The processor 005, if being that the target resource is not enough for testing result, is detected whether in the presence of idle D2D resources；

The processor 005, if being the presence of idle D2D resources for testing result, the target resource is distributed from the idle D2D resources.

When distributing D2D resources, base station can contemplate the D2D resources for first distributing the free time, when being available for distribution without idle D2D resources, consider further that the allocated D2D resources of multiplexing；Or, base station can first be multiplexed allocated D2D resources, when not being available for the D2D resources of multiplexing, idle D2D resources of reallocating.

Such as, if base station first considers that multiplexing has distributed D2D resources, consider further that the idle D2D resources of distribution, then base station is distributed after target resource from recoverable resources, it can detect whether target resource is enough, if enough, the D2D resources for free time of not reallocating, otherwise, target resource is further distributed from idle D2D resources. The processor 005, for before target resource is distributed from the recoverable resources, detecting whether in the presence of idle D2D resources；

The processor 005, if being the presence of idle D2D resources for testing result, the target resource is distributed from the idle D2D resources；

The processor 005, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The processor 005, if being that the target resource is not enough for testing result, performs the step of should distributing target resource from the recoverable resources.

In summary, base station provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 5 is referred to, the equipment pie graph of the first terminal provided it illustrates one embodiment of the invention.The first terminal can be used for being used for the D2D resources to second terminal transmission D2D signals of communication to base station requests.The first terminal can include：

Request sending module 301, communicates for being sent to base station for setting up end-to-end D2D with second terminal Request, the request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources；First resource receiving module 302, the target resource for receiving base station transmission；

Signal of communication sending module 303, for sending D2D signals of communication to the second terminal according to the target resource.

In summary, first terminal provided in an embodiment of the present invention, by being sent to base station the request that D2D communicates is set up with second terminal, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 6 is referred to, the equipment pie graph of the first terminal provided it illustrates another embodiment of the present invention.The first terminal can be used for being used for the D2D resources to second terminal transmission D2D signals of communication to base station requests.The first terminal can include：

Request sending module 401, for being sent to base station for setting up the request that end-to-end D2D communicates with second terminal, the request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources；Discovery signal Discovery signals can be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；D2D signals of communication that second condition show that other terminals in addition to first terminal are sent using the recoverable resources are met to second terminal not Influence can be produced.Wherein, base station determines the description in the specific method of recoverable resources base station correspondence embodiment shown in Figure 2, and the present embodiment is repeated no more.

First resource receiving module 402, the target resource for receiving base station transmission；

Signal of communication sending module 403, for sending D2D signals of communication to the second terminal according to the target resource.

The first terminal also includes：

It was found that signal transmitting module 404, sends for periodicity and finds signal.

Wherein, the previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, each D2D terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal for sending the parsing accuracy rate as the first terminal received, the signal quality of the follow-up discovery signal sent according to the first terminal assists base station to determine recoverable resources, description in specific base station correspondence embodiment shown in Figure 2, the present embodiment is repeated no more.

In summary, first terminal provided in an embodiment of the present invention, by being sent to base station the request that D2D communicates is set up with second terminal, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 7 is referred to, the equipment pie graph of the first terminal provided it illustrates further embodiment of this invention.The first terminal can be used for being used for the D2D resources to second terminal transmission D2D signals of communication to base station requests.The first terminal can include：Processor 007, emitter 008 and receiver 009;

The processor 007, for controlling the emitter 008 to be sent to base station for setting up the request that end-to-end D2D communicates with second terminal, the request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources；

The receiver 009, the target resource for receiving base station transmission；

The processor 007, for control the emitter 008 according to the target resource to the second terminal send D2D signals of communication.

In summary, first terminal provided in an embodiment of the present invention, is built by being sent to base station with second terminal The request of vertical D2D communications, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 8 is referred to, the equipment pie graph of the first terminal provided it illustrates yet another embodiment of the invention.The first terminal can be used for being used for the D2D resources to second terminal transmission D2D signals of communication to base station requests.The first terminal can include：Processor 010, emitter 011 and receiver 012;

The processor 010, for controlling the emitter 011 to be sent to base station for setting up the request that end-to-end D2D communicates with second terminal, the request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources；

Discovery signal Discovery signals can be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal.Wherein, base station determines the description in the specific method of recoverable resources base station correspondence embodiment shown in Figure 4, and the present embodiment is repeated no more.

The receiver 012, the target resource for receiving base station transmission；

The processor 010, for control the emitter 011 according to the target resource to the second terminal send D2D signals of communication. The processor 010, is additionally operable to control the emitter 011 periodically to send discovery signal.Wherein, the previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, each D2D terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal for sending the parsing accuracy rate as the first terminal received, the signal quality of the follow-up discovery signal sent according to the first terminal assists base station to determine recoverable resources, description in specific base station correspondence embodiment shown in Figure 4, the present embodiment is repeated no more.

In summary, first terminal provided in an embodiment of the present invention, by being sent to base station the request that D2D communicates is set up with second terminal, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Fig. 9 is referred to, the equipment pie graph of the second terminal provided it illustrates one embodiment of the invention.The D2D resources that the second terminal can be used for being distributed according to base station receive the D2D signals of communication that first terminal is sent.The second terminal can include：

Secondary resource receiving module 501, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources being multiplexed by the first terminal and the second terminal, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

Signal of communication receiving module 502, the D2D signals of communication for receiving first terminal transmission according to the target resource.

In summary, second terminal provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 10 is referred to, the equipment pie graph of the second terminal provided it illustrates another embodiment of the present invention. The D2D resources that the second terminal can be used for being distributed according to base station receive the D2D signals of communication that first terminal is sent.The second terminal can include：

Secondary resource receiving module 601, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources being multiplexed by the first terminal and the second terminal, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

Signal of communication receiving module 602, the D2D signals of communication for receiving first terminal transmission according to the target resource.

The second terminal also includes：

Second command reception module 603, for before the Secondary resource receiving module 601 receives the target resource that base station is sent, the second instruction for including first resource of base station transmission is received, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

First monitors module 604, for monitoring D2D signals of communication according to the first resource；

5th detection module 605, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

Second response sending module 606, is responded for sending second to the base station according to first testing result, and whether second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

Wherein, the detection ordering of above-mentioned two condition can be configured according to actual conditions, and base station can first detect first condition, then detect second condition；Base station can also first detect second condition, then detect First condition.

First condition is detected in the ban, when detecting second condition again, base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

The second terminal also includes：

3rd command reception module 607, for before the Secondary resource receiving module 601 receives the target resource that base station is sent, the 3rd instruction for including Secondary resource of base station transmission is received, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

Second monitors module 608, for monitoring D2D signals of communication according to the Secondary resource；

6th detection module 609, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

3rd response sending module 610, is responded for sending the 3rd to the base station according to second testing result, and whether the 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

Second condition is detected in the ban, when detecting first condition again, base station using currently allocated can give the 4th terminal to be sent to second terminal to receive the D2D resources of D2D signals of communication as Secondary resource by high-level signaling, the Secondary resource that second terminal is sent according to base station monitors D2D signals of communication, and return to the 3rd response to base station according to snoop results, when base station according to the 3rd in response to determining that the signal intensity for the D2D signals of communication that second terminal is received according to Secondary resource be less than predetermined strength threshold value when, the 4th is sent to the 4th terminal to instruct, 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th response to base station according to snoop results, when the 4th response indicates that the signal quality for the discovery signal that the 4th terminal monitoring is sent to first terminal is less than predetermined quality threshold value, the recoverable resources that Secondary resource is defined as to be multiplexed by first terminal and second terminal. It should be noted that in the response that second terminal is returned to base station, the intensity of the D2D signals of communication listened to directly can be sent into base station, detect whether signal intensity is less than predetermined strength threshold value by base station；Or, second terminal can also first detect whether signal intensity is less than predetermined strength threshold value, and testing result carrying is sent into base station in the response.In addition, second terminal can be by base station dynamic configuration to used resource when the response of base station return second or the 3rd response.

In summary, second terminal provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 11 is referred to, the equipment pie graph of the second terminal provided it illustrates further embodiment of this invention.The D2D resources that the second terminal can be used for being distributed according to base station receive the D2D signals of communication that first terminal is sent.The second terminal can include：Receiver 013 and processor 014;

The receiver 013, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources being multiplexed by the first terminal and the second terminal, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The processor 014, for controlling the receiver 013 to receive the D2D signals of communication of first terminal transmission according to the target resource.

In summary, second terminal provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 12 is referred to, the equipment pie graph of the second terminal provided it illustrates yet another embodiment of the invention.The D2D resources that the second terminal can be used for being distributed according to base station receive the D2D signals of communication that first terminal is sent.The second terminal can include：Receiver 015 and processor 016; The receiver 015, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources being multiplexed by the first terminal and the second terminal, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The processor 016, for controlling the receiver 015 to receive the D2D signals of communication of first terminal transmission according to the target resource.

The second terminal also includes：Emitter 017;

The receiver 015, is additionally operable to before the target resource that base station is sent is received, and receives the second instruction for including first resource of base station transmission, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

The processor 016, for controlling the receiver 015 according to first resource monitoring D2D signals of communication；The processor 016, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

The processor 016, is responded for controlling the emitter 017 to send second to the base station according to first testing result, and whether second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

First condition is detected in the ban, then when detecting second condition, base station can be by high-level signaling to The allocated each terminal for having D2D resources to carry out D2D communications sends first and instructed, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

The receiver 015, for before the target resource that base station is sent is received, receiving the 3rd instruction for including Secondary resource of base station transmission, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

The processor 016, for controlling the receiver 015 according to Secondary resource monitoring D2D signals of communication；The processor 016, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

The processor 016, for controlling the emitter 017 according to second testing result to the base station the 3rd response of transmission, whether the 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

Second condition is detected in the ban, when detecting first condition again, base station using currently allocated can give the 4th terminal to be sent to second terminal to receive the D2D resources of D2D signals of communication as Secondary resource by high-level signaling, the Secondary resource that second terminal is sent according to base station monitors D2D signals of communication, and return to the 3rd response to base station according to snoop results, when base station according to the 3rd in response to determining that the signal intensity for the D2D signals of communication that second terminal is received according to Secondary resource be less than predetermined strength threshold value when, the 4th is sent to the 4th terminal to instruct, 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th response to base station according to snoop results, when the 4th response indicates that the signal quality for the discovery signal that the 4th terminal monitoring is sent to first terminal is less than predetermined quality threshold value, the recoverable resources that Secondary resource is defined as to be multiplexed by first terminal and second terminal.

It should be noted that in the response that second terminal is returned to base station, the intensity of the D2D signals of communication listened to directly can be sent into base station, detect whether signal intensity is less than predetermined strength threshold value by base station；Or, second terminal can also first detect that whether signal intensity is less than predetermined strength threshold value, and testing result is taken Band is sent to base station in the response.In addition, second terminal can be by base station dynamic configuration to used resource when the response of base station return second or the 3rd response.

In summary, second terminal provided in an embodiment of the present invention, it is the allocated by receiving base station

It is determined in D2D resources by after the first terminal and the recoverable resources of second terminal multiplexing, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Refer to Figure 13, the equipment pie graph of the third terminal provided it illustrates one embodiment of the invention, the third terminal is the terminal of base station the allocated D2D resources progress D2D communications, the third terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.The third terminal can include：

First command reception module 701, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

3rd monitors module 702, the discovery signal for monitoring first terminal transmission；

7th detection module 703, the signal quality for detecting the discovery signal that the 3rd monitoring module 702 is listened to, obtains the 3rd testing result；

First response sending module 704, is responded for sending first to the base station according to the 3rd testing result；By the base station when first response indicates that the signal quality of the discovery signal listened to is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Wherein, the first resource is distributed to D2D resource of the third terminal to receive D2D signals of communication, and this second instructs and monitor D2D signals of communication for indicating the second terminal according to the first resource；Whether second signal intensity responded for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value. In summary, third terminal provided in an embodiment of the present invention, by monitoring the discovery signal that first terminal is sent after the first instruction that base station is sent is received, and return to the first response to base station according to snoop results, indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 14, the equipment pie graph of the third terminal provided it illustrates another embodiment of the present invention, the third terminal is the terminal of base station the allocated D2D resources progress D2D communications, the third terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.The third terminal can include：

First command reception module 801, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

3rd monitors module 802, the discovery signal for monitoring first terminal transmission；

Specifically, discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.Third terminal is received after the first instruction of base station transmission, can monitor the discovery signal that first terminal is periodically sent.

7th detection module 803, the signal quality for detecting the discovery signal that the 3rd monitoring module 802 is listened to, obtains the 3rd testing result；

The previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, third terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal that the parsing accuracy rate is sent as the first terminal received.

First response sending module 804, is responded for sending first to the base station according to the 3rd testing result；Indicate that the signal quality of the discovery signal listened to is less than predetermined quality threshold in first response by the base station During value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Wherein, the first resource is distributed to D2D resource of the third terminal to receive D2D signals of communication, and this second instructs and monitor D2D signals of communication for indicating the second terminal according to the first resource；Whether second signal intensity responded for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

Base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource for reusable money The first response sending module 804, the first response frame of first response is included for being sent to the base station, and first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

Wherein, the terminal of D2D resources has been assigned to during the return response of base station, can be by allocated, resource to send D2D signals is responded to base station return, such as, the response for returning to base station can be carried in first OFDM symbol in the first D2D communication frame sent after receiving the first instruction.Base station receives the first D2D communication frame sent according to the allocated D2D resources after the first instruction is sent, and parses first OFDM symbol in the D2D communication frames received, to obtain the first response of each D2D terminal return.

It should be noted that in the response that third terminal is returned to base station, the signal quality of the discovery signal of the first terminal listened to directly can be sent into base station, detect whether signal quality is less than predetermined quality threshold value by base station；Or, third terminal can also first detect whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

In summary, third terminal provided in an embodiment of the present invention, by monitoring the discovery signal that first terminal is sent after the first instruction that base station is sent is received, and return to the first response to base station according to snoop results, indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 15, the equipment pie graph of the third terminal provided it illustrates further embodiment of this invention, the third terminal is the terminal of base station the allocated D2D resources progress D2D communications, the third terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.The third terminal can include：Receiver 018, processor 019 and emitter 020;

The receiver 018, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends； The processor 019, for controlling the receiver 018 to monitor the discovery signal that the first terminal is sent；The processor 019, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 3rd testing result；

The processor 019, is responded for controlling the emitter 020 to send first to the base station according to the 3rd testing result；By the base station when first response indicates that the signal quality of the discovery signal listened to is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

In summary, third terminal provided in an embodiment of the present invention, by monitoring the discovery signal that first terminal is sent after the first instruction that base station is sent is received, and return to the first response to base station according to snoop results, indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 16, the equipment pie graph of the third terminal provided it illustrates yet another embodiment of the invention, the third terminal is the terminal of base station the allocated D2D resources progress D2D communications, the third terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.The third terminal can include：Receiver 021, processor 022 and emitter 023;

The receiver 021, the first instruction for receiving base station transmission, first instruction is connecing for the base station Receive first terminal transmission be used for set up the instruction sent after the request that D2D communicates with second terminal；The processor 022, for controlling the receiver 021 to monitor the discovery signal that the first terminal is sent；Specifically, discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.Third terminal is received after the first instruction of base station transmission, can monitor the discovery signal that first terminal is periodically sent.

The processor 022, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 3rd testing result；

The processor 022, is responded for controlling the emitter 023 to send first to the base station according to the 3rd testing result；By the base station when first response indicates that the signal quality of the discovery signal listened to is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the letter for the D2D signals of communication that second terminal is received according to the recoverable resources Number intensity is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal.

Base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

The processor 022, the first response frame of first response is included for controlling the emitter 023 to be sent to the base station, and first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

In summary, third terminal provided in an embodiment of the present invention, is responded by monitoring the discovery signal that first terminal is sent after the first instruction that base station is sent is received, and returning to first to base station according to snoop results, Indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 17, the equipment pie graph of the 4th terminal provided it illustrates one embodiment of the invention, 4th terminal is the terminal of base station the allocated D2D resources progress D2D communications, 4th terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.4th terminal can include：

4th command reception module 901, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

4th monitors module 902, the discovery signal for monitoring first terminal transmission；

8th detection module 903, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

4th response sending module 904, is responded for sending the 4th to the base station according to the 4th testing result；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, the 4th terminal provided in an embodiment of the present invention, is including the 3rd instruction of Secondary resource by receiving base station being sent to second terminal, and the 3rd response returned according to the second terminal of reception indicates the The signal intensity for the D2D signals of communication that two terminals are listened to according to Secondary resource is less than after the 4th instruction sent during predetermined strength threshold value, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 18, the equipment pie graph of the 4th terminal provided it illustrates another embodiment of the present invention, 4th terminal is the terminal of base station the allocated D2D resources progress D2D communications, 4th terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.4th terminal can include：

4th command reception module 1001, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal. 4th monitors module 1002, the discovery signal for monitoring first terminal transmission；8th detection module 1003, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

The discovery signal of 4th terminal monitoring first terminal transmission simultaneously detects that the method for the signal quality for finding signal is similar with third terminal, and here is omitted.

4th response sending module 1004, is responded for sending the 4th to the base station according to the 4th testing result；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

Base station using currently allocated can give the 4th terminal to be sent to second terminal to receive the D2D resources of D2D signals of communication as Secondary resource by high-level signaling, the Secondary resource that second terminal is sent according to base station monitors D2D signals of communication, and return to the 3rd response to base station according to snoop results, when base station according to the 3rd in response to determining that the signal intensity for the D2D signals of communication that second terminal is received according to Secondary resource be less than predetermined strength threshold value when, the 4th is sent to the 4th terminal to instruct, 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th response to base station according to snoop results, when the 4th response indicates that the signal quality for the discovery signal that the 4th terminal monitoring is sent to first terminal is less than predetermined quality threshold value, the recoverable resources that Secondary resource is defined as to be multiplexed by first terminal and second terminal.

4th response sending module 1004, the second response frame of the 4th response is included for being sent to the base station, second response frame is is somebody's turn to do after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

Wherein, the terminal of D2D resources has been assigned to during the return response of base station, can be by allocated, resource to send D2D signals is responded to base station return, such as, the response for returning to base station can be carried in first OFDM symbol in the first D2D communication frame sent after receiving the 4th instruction.Base station receives the first D2D communication frame sent according to the allocated D2D resources after the 4th instruction is sent, and parses first OFDM symbol in the D2D communication frames received, to obtain the 4th response of each D2D terminal return.

It should be noted that in the response that the 4th terminal is returned to base station, the signal quality of the discovery signal of the first terminal listened to directly can be sent into base station, detect whether signal quality is less than predetermined matter by base station Measure threshold value；Or, the 4th terminal can also first detect whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

In summary, 4th terminal provided in an embodiment of the present invention, the 3rd instruction for including Secondary resource is being sent to second terminal by receiving base station, and after the 4th instruction sent when indicating that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value according to the 3rd response of the second terminal of reception return, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 19, the equipment pie graph of the 4th terminal provided it illustrates further embodiment of this invention, 4th terminal is the terminal of base station the allocated D2D resources progress D2D communications, 4th terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.4th terminal can include：Receiver 024, processor 025 and emitter 026;

The receiver 024, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

The processor 025, for controlling the receiver 024 to monitor the discovery signal that the first terminal is sent；The processor 025, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

The processor 025, for control the emitter 026 according to the 4th testing result to the base station send the 4th response；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；The signal quality for the discovery signal for indicating to listen in the 4th response by the base station is less than should During predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, 4th terminal provided in an embodiment of the present invention, the 3rd instruction for including Secondary resource is being sent to second terminal by receiving base station, and after the 4th instruction sent when indicating that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value according to the 3rd response of the second terminal of reception return, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Refer to Figure 20, the equipment pie graph of the 4th terminal provided it illustrates yet another embodiment of the invention, 4th terminal is the terminal of base station the allocated D2D resources progress D2D communications, 4th terminal can be used for receiving setting up after the request that D2D communicates with second terminal for first terminal transmission in base station, assist base station to determine recoverable resources in allocated D2D resources.4th terminal can include：Receiver 027, processor 028 and emitter 029;

The receiver 027, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

Specifically, the recoverable resources needs to meet two conditions：First, it is allocated the recoverable resources and uses The signal quality for the discovery signal that the first terminal received with receiving the terminal of D2D communications is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal.

The processor 028, for controlling the receiver 027 to monitor the discovery signal that the first terminal is sent；The processor 028, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

The processor 028, for control the emitter 029 according to the 4th testing result to the base station send the 4th response；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

The processor 028, the second response frame of the 4th response is included for controlling the emitter 029 to be sent to the base station, after second response frame is should instruct receiving the 4th, the first D2D communication frame sent according to the Secondary resource.

Wherein, it has been assigned the terminals of D2D resources to return to base station when responding, can have returned sending the resource of D2D signals and responded to base station, such as, can will return to the response of base station by allocated Carry in first OFDM symbol in the first D2D communication frame sent after receiving the 4th instruction.Base station receives the first D2D communication frame sent according to the allocated D2D resources after the 4th instruction is sent, and parses first OFDM symbol in the D2D communication frames received, to obtain the 4th response of each D2D terminal return.

It should be noted that in the response that the 4th terminal is returned to base station, the signal quality of the discovery signal of the first terminal listened to directly can be sent into base station, detect whether signal quality is less than predetermined quality threshold value by base station；Or, the 4th terminal can also first detect whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

In summary, 4th terminal provided in an embodiment of the present invention, the 3rd instruction for including Secondary resource is being sent to second terminal by receiving base station, and after the 4th instruction sent when indicating that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value according to the 3rd response of the second terminal of reception return, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 21 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used in any shown base station as shown in Figure 1 to Figure 4, for the terminal distribution D2D resources of request D2D communications.The resource allocation methods can include：

Step 1101, what reception first terminal was sent is used to set up the request that end-to-end D2D communicates with second terminal；

Step 1102, the recoverable resources being multiplexed by the first terminal and the second terminal is determined in the allocated D2D resources；

Wherein, the recoverable resources is to be allocated the resource to be less than predetermined quality threshold value to receive the signal quality for the discovery signal that the first terminal that receives of terminal of D2D communications is sent, and the signal intensity of D2D signals of communication that receives according to this of second terminal is less than the resource of predetermined strength threshold value.The D2D resources can be running time-frequency resource.

Step 1103, target resource is distributed from the recoverable resources；

Step 1104, the target resource is sent to the first terminal and the second terminal, by the first terminal D2D signals of communication are sent according to the target resource, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, resource allocation methods provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 22 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used in any shown base station as shown in Figure 1 to Figure 4, and the D2D resources that D2D signals of communication are sent to second terminal are distributed for the request D2D first terminals communicated.The resource allocation methods can include：

Step 1201, what reception first terminal was sent is used to set up the request that end-to-end D2D communicates with second terminal；

Discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.

Step 1202, the recoverable resources being multiplexed by the first terminal and the second terminal is determined in the allocated D2D resources；

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show, when first terminal sends D2D signals of communication by the recoverable resources to second terminal, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Second condition is met to show except the The D2D signals of communication that other terminals outside one terminal are sent using the recoverable resources will not produce influence to second terminal.

It should be noted that in the response that D2D terminals or second terminal are returned to base station, the signal quality of the intensity of the D2D signals of communication listened to or the discovery signal of first terminal directly can be sent into base Stand, detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value by base station；Or, D2D terminals or second terminal can also first detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

Wherein, the terminal of D2D resources has been assigned to during the return response of base station, can be by allocated, resource to send D2D signals is responded to base station return, such as, the response for returning to base station can be carried in first OFDM symbol in the first D2D communication frame sent after receiving the first instruction or the 4th instruction.Base station is after the first instruction or the 4th instruction is sent, receive the first D2D communication frame sent according to the allocated D2D resources, and first OFDM symbol in the D2D communication frames received is parsed, to obtain the first response or the 4th response of the return of each D2D terminal.

Step 1203, target resource is distributed from the recoverable resources；

Step 1204, whether detection target resource is sufficient；If so, into step 1207, otherwise, into step 1205;

Step 1205, detect whether in the presence of idle D2D resources；If so, into step 1206, no shellfish ' J, into step 1207;

Step 1206, target resource is distributed from idle D2D resources；

Base station can combine actual conditions, and distribution portion resource or whole resources are used as target resource from idle D2D resources. When distributing D2D resources, base station, which can contemplate, is first multiplexed allocated D2D resources, when not being available for the D2D resources of multiplexing, idle D2D resources of reallocating.

Such as, base station is distributed after target resource from recoverable resources, can detect whether target resource is enough, if enough, the D2D resources for free time of not reallocating, otherwise, target resource is further distributed from idle D2D resources.

Step 1207, the target resource is sent to the first terminal and the second terminal, D2D signals of communication is sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, resource allocation methods provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 23 is referred to, the method flow diagram of the resource allocation methods provided it illustrates further embodiment of this invention.This method can be used in any shown base station as shown in Figure 1 to Figure 4, and the D2D resources that D2D signals of communication are sent to second terminal are distributed for the request D2D first terminals communicated.The resource allocation methods can include：

Step 1301, what reception first terminal was sent is used to set up the request that end-to-end D2D communicates with second terminal；

Step 1302, detect whether in the presence of idle D2D resources；If so, into step 1303, no shellfish ' J, into step 1305;

Step 1303, target resource is distributed from idle D2D resources；

Step 1304, whether detection target resource is sufficient；If so, into step 1307, otherwise, entering Step 1305;

Step 1305, the recoverable resources being multiplexed by the first terminal and the second terminal is determined in the allocated D2D resources；

Wherein, the detection ordering of above-mentioned two condition can be configured according to actual conditions, can first detect first condition, then detect second condition；Second condition can also be first detected, then detects first condition. First condition is detected in the ban, when detecting second condition again, base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

It should be noted that, in the response that D2D terminals or second terminal are returned to base station, the signal quality of the intensity of the D2D signals of communication listened to or the discovery signal of first terminal directly can be sent to base station, detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value by base station；Or, D2D terminals or second terminal can also first detect whether signal intensity is less than predetermined strength threshold value or whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent into base station in the response.

Wherein, the terminal of D2D resources has been assigned to during the return response of base station, can be by allocated, resource to send D2D signals is responded to base station return, such as, the response for returning to base station can be carried in first OFDM symbol in the first D2D communication frame sent after receiving the first instruction or the 4th instruction.Base station receives the first D2D communication frame sent according to the allocated D2D resources, and parse first in the D2D communication frames received after the first instruction or the 4th instruction is sent OFDM symbol, to obtain the first response or the 4th response of the return of each D2D terminal.Furthermore, it is necessary to which explanation, second terminal can be by base station dynamic configuration to used resource when the response of base station return second or the 3rd response.

Step 1306, target resource is distributed from the recoverable resources；

When distributing D2D resources, base station can contemplate the D2D resources for first distributing the free time, when being available for distribution without idle D2D resources, consider further that the allocated D2D resources of multiplexing

Base station can first detect whether available free D2D resources, if having, then target resource is distributed from idle D2D resources, if from idle D2D resources after distribution target resource, the target resource is still not enough, recoverable resources is then further determined that, and target resource is distributed from reusable resource.In addition, if the target resource distributed from idle D2D resources is enough, the step of base station can be without follow-up determination recoverable resources, so as to save system resource, reduces consumption.

In addition, base station to second terminal when sending the 3rd instruction, allocated D2D resources and idle D2D resources can be all sent to second terminal, second terminal monitors D2D signals of communication according to whole D2D resources, and return to the 3rd response to base station according to snoop results, base station determines that the signal intensity for the D2D signals of communication that second terminal is received according to this is less than in the resource of predetermined strength threshold value, with the presence or absence of idle resource, if, it is then preferential to distribute target resource from idle resource, if the inadequate resource without idle resource or free time, then base station is further performed to the step of the 4th instruction of transmission of the 4th terminal.

Step 1307, the target resource is sent to the first terminal and the second terminal, D2D signals of communication is sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, resource allocation methods provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 24 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used in the first terminal shown in as any such as Fig. 5 to Fig. 8, be used for base station requests The D2D resources of D2D signals of communication are sent to second terminal.The resource allocation methods can include：Step 1401, sent to base station for setting up the request that end-to-end D2D communicates with second terminal, the request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources；

Step 1402, the target resource of base station transmission is received；

Step 1403, D2D signals of communication are sent to the second terminal according to the target resource.

In summary, resource allocation methods provided in an embodiment of the present invention, by being sent to base station the request that D2D communicates is set up with second terminal, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 25 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used in the first terminal shown in as any such as Fig. 5 to Fig. 8, and the D2D resources that D2D signals of communication are sent to second terminal are used for base station requests.The resource allocation methods can include：

Step 1501, periodically send and find signal；

Discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications.

Step 1502, sent to base station for setting up the request that end-to-end D2D communicates with second terminal；The request is used to indicate that the base station is determined to the recoverable resources being multiplexed by the first terminal and the second terminal in the allocated D2D resources, and distributes target resource from the recoverable resources.

When first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.

Specifically, the recoverable resources needs to meet two conditions：First, the recoverable resources, which is allocated, to receive the signal quality for the discovery signal that the first terminal that the terminal of D2D communications is received is sent is less than predetermined quality threshold value；Second, the signal intensity for the D2D signals of communication that second terminal is received according to the recoverable resources is less than predetermined strength threshold value.Wherein, first condition is met to show when first terminal can be answered by this During with resource to second terminal transmission D2D signals of communication, influence will not be produced on other terminals for receiving D2D signals of communication using the recoverable resources in addition to second terminal；Meet second condition and show that the D2D signals of communication that other terminals in addition to first terminal are sent using the recoverable resources will not produce influence to second terminal.Wherein, base station determines the description in the specific method of recoverable resources base station correspondence embodiment shown in Figure 2, and the present embodiment is repeated no more.

It should be noted that, the previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, each D2D terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal for sending the parsing accuracy rate as the first terminal received, the signal quality of the follow-up discovery signal sent according to the first terminal assists base station to determine recoverable resources, description in specific base station correspondence embodiment shown in Figure 2, the present embodiment is repeated no more.

Step 1503, the target resource of base station transmission is received；

Step 1504, D2D signals of communication are sent to the second terminal according to the target resource.

In summary, resource allocation methods provided in an embodiment of the present invention, by being sent to base station the request that D2D communicates is set up with second terminal, the resource that can be multiplexed by first terminal and second terminal is distributed from allocated D2D resources by base station, and the resource distributed according to base station sends D2D signals of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 26 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used in the second terminal shown in as any such as Fig. 9 to Figure 12, and the D2D resources distributed according to base station receive the D2D signals of communication that first terminal is sent.The resource allocation methods can include：Step 1601, receive the target resource that base station is sent, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources being multiplexed by the first terminal and the second terminal, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

Step 1602, the D2D signals of communication of first terminal transmission are received according to the target resource.

In summary, resource allocation methods provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D that first base station is sent is received according to the target resource Signal of communication, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reaches the purpose for improving resource utilization and power system capacity.Figure 27 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used in the second terminal shown in as any such as Fig. 9 to Figure 12, and the D2D resources distributed according to base station receive the D2D signals of communication that first terminal is sent.The resource allocation methods can include：Step 1701, the second instruction for including first resource that base station is sent is received；

The first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication.Wherein, base station can send first to each terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, each D2D terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the signal quality for the discovery signal that the first terminal which terminal monitoring is arrived is sent is less than predetermined quality threshold value according to first response, and the signal quality for the discoverys signal that the first terminal that listens to is sent will be distributed to be defined as first resource less than the D2D resources of the terminal of predetermined quality threshold value.

Step 1702, D2D signals of communication are monitored according to the first resource, and detects the signal intensity of the D2D signals of communication listened to according to the first resource, obtain the first testing result；

Step 1703, second is sent to the base station according to first testing result to respond；

Whether second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

When base station according to this second in response to determining that when the signal intensity for the D2D signals of communication that second terminal is listened to according to first resource is less than predetermined signal strength threshold value, the recoverable resources that the first resource is defined as to be multiplexed by the first terminal and the second terminal.

, wherein it is desired to which explanation, in the response that second terminal is returned to base station, directly can be sent to base station by the intensity of the D2D signals of communication listened to, detect signal intensity whether less than predetermined strength threshold value by base station；Or, second terminal can also first detect whether signal intensity is less than predetermined strength threshold value, and testing result carrying is sent into base station in the response.In addition, second terminal can be by base station dynamic configuration to used resource during the second response of return of base station.

Step 1704, the target resource that base station is sent is received；

The target resource is the resource that the base station is distributed from the recoverable resources； Step 1705, the D2D signals of communication of first terminal transmission are received according to the target resource.

In summary, resource allocation methods provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 28 is referred to, the method flow diagram of the resource allocation methods provided it illustrates further embodiment of this invention.This method can be used in the second terminal shown in as any such as Fig. 9 to Figure 12, and the D2D resources distributed according to base station receive the D2D signals of communication that first terminal is sent.The resource allocation methods can include：Step 1801, the 3rd instruction for including Secondary resource that base station is sent is received；

The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；Step 1802, D2D signals of communication are monitored according to the Secondary resource, detects the signal intensity of the D2D signals of communication listened to according to the Secondary resource, obtain the second testing result；

Step 1803, the 3rd is sent to the base station according to second testing result to respond；

Whether the 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

In practical application, base station using currently allocated can give the 4th terminal to be sent to second terminal to receive the D2D resources of D2D signals of communication as Secondary resource by high-level signaling, the Secondary resource that second terminal is sent according to base station monitors D2D signals of communication, and return to the 3rd response to base station according to snoop results, when base station according to the 3rd in response to determining that the signal intensity for the D2D signals of communication that second terminal is received according to Secondary resource be less than predetermined strength threshold value when, the 4th is sent to the 4th terminal to instruct, 4th terminal is received after the instruction, the discovery signal that first terminal is sent is monitored in predetermined resource, and return to the 4th response to base station according to snoop results, when the 4th response indicates that the signal quality for the discovery signal that the 4th terminal monitoring is sent to first terminal is less than predetermined quality threshold value, the recoverable resources that Secondary resource is defined as to be multiplexed by first terminal and second terminal.

, wherein it is desired to which explanation, in the response that second terminal is returned to base station, directly can be sent to base station by the intensity of the D2D signals of communication listened to, detect signal intensity whether less than predetermined strength threshold value by base station；Or, second terminal can also first detect whether signal intensity is less than predetermined strength threshold value, and testing result carrying is sent into base station in the response.In addition, second terminal is made when returning to the 3rd response to base station Resource can be by base station dynamic configuration.

Step 1804, the target resource that base station is sent is received；

The target resource is the resource that the base station is distributed from the recoverable resources；

Step 1805, the D2D signals of communication of first terminal transmission are received according to the target resource.

In summary, resource allocation methods provided in an embodiment of the present invention, after the recoverable resources being multiplexed by receiving base station to be determined in the allocated D2D resources by the first terminal and the second terminal, the target resource distributed from recoverable resources, and the D2D signals of communication that first base station is sent are received according to the target resource, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 29 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used in the third terminal shown in as any such as Figure 13 to Figure 16, and being set up with second terminal after the request that D2D communicate for first terminal transmission is received in base station, and assistance base station determines recoverable resources in allocated D2D resources.The resource allocation methods can include：

Step 1901, receive the first instruction that base station is sent, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

Step 1902, the discovery signal of first terminal transmission is monitored；

Step 1903, the signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 3rd testing result；Step 1904, first is sent to the base station according to the 3rd testing result to respond；By the base station when first response indicates that the signal quality of the discovery signal listened to is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；Wherein, the first resource is distributed to D2D resource of the third terminal to receive D2D signals of communication, and this second instructs and monitor D2D signals of communication for indicating the second terminal according to the first resource；Whether second signal intensity responded for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

In summary, resource allocation methods provided in an embodiment of the present invention, by receiving what base station was sent The discovery signal that first terminal is sent is monitored after first instruction, and return to the first response to base station according to snoop results, indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 30 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used in the third terminal shown in as any such as Figure 13 to Figure 16, and being set up with second terminal after the request that D2D communicate for first terminal transmission is received in base station, and assistance base station determines recoverable resources in allocated D2D resources.The resource allocation methods can include：

Step 2001, the first instruction that base station is sent is received；

First instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

Step 2002, the discovery signal of first terminal transmission is monitored；

Step 2003, the signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 3rd testing result；The previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, third terminal is received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal that the parsing accuracy rate is sent as the first terminal received.

Step 2004, first is sent to the base station according to the 3rd testing result to respond.

Third terminal can send the first response frame for including first response to the base station, and first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

Wherein, the terminals of D2D resources has been assigned to return to base station when responding, can by allocated, Resource to send D2D signals is responded to base station return, such as, and the response that can will return to base station is carried in first OFDM symbol in the first D2D communication frame sent after receiving the first instruction.Base station receives the first D2D communication frame sent according to the allocated D2D resources after the first instruction is sent, and parses first OFDM symbol in the D2D communication frames received, to obtain the first response of third terminal return.

Base station is when first response indicates that the signal quality of the discovery signal listened to is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response of second terminal return, and when second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Base station can send first to the third terminal for being assigned the progress D2D communications of D2D resources by high-level signaling and instruct, third terminal is received after first instruction, the discovery signal Discovery signals that first terminal is sent are monitored on predetermined running time-frequency resource, and the first response is returned to base station according to the discovery signal listened to, base station judges that the discovery that the first terminal that third terminal is listened to is sent is believed according to first response Number signal quality be less than predetermined quality threshold value when, the D2D resources for distributing to third terminal are defined as first resource.Base station sends the second instruction for including the first resource to second terminal, second terminal is received after second instruction, the D2D signals of communication that other terminals are sent by the Secondary resource are monitored according to the Secondary resource, and according to snoop results to base station return second respond, base station according to this second in response to determining that the D2D signals of communication that second terminal is listened to according to this signal intensity be less than predetermined signal strength threshold value resource be recoverable resources.

In summary, resource allocation methods provided in an embodiment of the present invention, by monitoring the discovery signal that first terminal is sent after the first instruction that base station is sent is received, and return to the first response to base station according to snoop results, indicate that the signal quality of the discovery signal for the first terminal that third terminal is received is instructed after being less than predetermined quality threshold value to second terminal transmission second in first response from base station, and when the second response returned according to second terminal indicates that the second terminal is less than predetermined strength threshold value according to third terminal to receive the signal intensity for the D2D signals of communication that the first resource of D2D signals of communication is listened to, first resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 31 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used in the 4th terminal shown in as any such as Figure 17 to Figure 20, and being set up with second terminal after the request that D2D communicate for first terminal transmission is received in base station, and assistance base station determines recoverable resources in allocated D2D resources.The resource allocation methods can include：

Step 2101, the 4th instruction that base station is sent is received；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and the 3rd responds for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource Signal intensity whether be less than the predetermined strength threshold value；

Step 2102, the discovery signal of first terminal transmission is monitored；

Step 2103, the signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 4th testing result；Step 2104, the 4th is sent to the base station according to the 4th testing result to respond；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, resource allocation methods provided in an embodiment of the present invention, the 3rd instruction for including Secondary resource is being sent to second terminal by receiving base station, and after the 4th instruction sent when indicating that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value according to the 3rd response of the second terminal of reception return, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 32 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used in the 4th terminal shown in as any such as Figure 17 to Figure 20, and being set up with second terminal after the request that D2D communicate for first terminal transmission is received in base station, and assistance base station determines recoverable resources in allocated D2D resources.The resource allocation methods can include：

Step 2201, the 4th instruction that base station is sent is received；

4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response of second terminal return, and the instruction sent when the 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value； Step 2202, the discovery signal of first terminal transmission is monitored；

Step 2203, the signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 4th testing result；The discovery signal of 4th terminal monitoring first terminal transmission simultaneously detects that the method for the signal quality for finding signal is similar with third terminal, and here is omitted.

Step 2204, the 4th is sent to the base station according to the 4th testing result to respond；Whether the 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value.

4th terminal sends the second response frame for including the 4th response to the base station, after second response frame is should instruct receiving the 4th, the first D2D communication frame sent according to the Secondary resource.

When the signal quality for the discovery signal that the base station indicates to listen in the 4th response is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

In summary, resource allocation methods provided in an embodiment of the present invention, the 3rd instruction for including Secondary resource is being sent to second terminal by receiving base station, and after the 4th instruction sent when indicating that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value according to the 3rd response of the second terminal of reception return, the signal quality for the discovery signal that the first terminal that Anti-Sniffer is arrived is sent, and the 4th response is returned to base station according to testing result, by base station the 4th response indicate the 4th terminal monitoring to first terminal send discovery signal signal quality be less than predetermined quality threshold value when, Secondary resource is defined as recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 33 is referred to, the method flow diagram of the resource allocation methods provided it illustrates one embodiment of the invention.This method can be used for the reusable resource of terminal distribution for setting up D2D communications for request in allocated D2D resources.Assuming that the D2D resources in system are not fixed, by base station according to the terminal log dynamic configuration for being currently needed for carrying out D2D communications.When first terminal request sets up D2D with second terminal to communicate, base station considers to be multiplexed allocated D2D resources first.The resource allocation methods can include：

Step 2301, first terminal sends to base station and sets up the request that D2D communicates with second terminal；Discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station. Step 2302, base station sends first to third terminal and instructed；

In practical application, base station can indicate each discovery signal for being assigned the transmission of the terminal monitoring first terminal of D2D resources to the currently allocated terminal broadcast high-level signaling for having D2D resources to carry out D2D communications.

Step 2303, third terminal monitors the discovery signal that first terminal is sent according to first instruction；Step 2304, third terminal returns to first to base station and responded；

Whether first signal quality for responding the discovery signal for indicating the first terminal transmission that third terminal is listened to is less than predetermined quality threshold value.

Specifically, the previously known reference content of each terminal can be carried in the discovery signal that first terminal is sent, each has been assigned the terminal of D2D resources and received after discovery signal, to finding that signal is parsed, and contrasted the content for parsing acquisition with reference content, obtain parsing accuracy rate, and the signal quality for the discovery signal that the parsing accuracy rate is sent as the first terminal received.

Step 2305, base station sends the second instruction for including first resource to second terminal when the first response indicates that the signal quality for the discovery signal that the first terminal that third terminal is listened to is sent is less than predetermined quality threshold value；

The first resource is that base station is pre-assigned to third terminal, so that third terminal receives the D2D resources of D2D signals of communication according to this.

In practical application, the terminal that the signal quality of all discovery signals for returning to the first terminal for indicating to receive in previous step can be less than corresponding to the response of predetermined quality threshold value by base station is used as first resource to receive the D2D resources of D2D signals of communication.

It should be noted that each has been assigned in the response that the terminal of D2D resources is returned to base station, the signal quality of the discovery signal of the first terminal listened to directly can be sent to base station, detect whether signal intensity is less than predetermined quality threshold value by base station；Or, it can also first detect whether signal quality is less than predetermined quality threshold value, and testing result carrying is sent to base station in the response.

Step 2306, second terminal monitors D2D signals of communication according to the first resource；

Second terminal monitors D2D signals of communication, and the D2D communications that Anti-Sniffer is arrived according to the first resource The intensity of signal.

Step 2307, second terminal returns to second to base station and responded；

Whether second signal intensity responded for indicating the D2D signals of communication that second terminal is listened to according to first resource is less than predetermined strength threshold value.

In the response that second terminal is returned to base station, the intensity of the D2D signals of communication listened to directly can be sent to base station, detect whether signal intensity is less than predetermined strength threshold value by base station；Or, second terminal can also first detect whether signal intensity is less than predetermined strength threshold value, and testing result carrying is sent into base station in the response.

Step 2308, first resource is defined as recoverable resources by base station when the second response indicates that the signal intensity for the D2D signals of communication that second terminal is listened to according to first resource is less than predetermined strength threshold value；

Base station is received after the second response of second terminal return, and the signal intensity for the D2D signals of communication for being listened to second terminal according to this according to the second response is defined as recoverable resources less than the resource of predetermined strength threshold value.

Step 2309, target resource is distributed in base station from recoverable resources；

Base station can combine actual conditions or preassigned rule, be target resource by some or all of resource allocation in recoverable resources.

Step 2310, if target resource is not enough, target resource is further distributed in base station from idle D2D resources；

Base station is distributed after target resource from recoverable resources, can detect whether target resource is enough, if the target resource distributed from recoverable resources is enough, the D2D resources for free time of not reallocating；If the signal intensity of the D2D signals of communication listened to according to this in the absence of second terminal is less than the resource of predetermined strength threshold value, or, the target resource distributed from recoverable resources is still inadequate, then base station is detected whether in the presence of idle D2D resources, if there is idle D2D resources, target resource is further distributed from idle D2D resources.

Step 2311, target resource is sent to first terminal and second terminal by base station, sends D2D signals of communication according to target resource by first terminal, and receive D2D signals of communication according to target resource by second terminal.

It should be noted that, the embodiment of the present invention first considers to be multiplexed allocated resource with base station, during reusable inadequate resource, it is illustrated exemplified by the D2D resources for considering further that the free time, in actual applications, the idle D2D resources of distribution can also first be considered, when idle D2D inadequate resources, the allocated resource of multiplexing is considered further that.

In summary, resource allocation methods provided in an embodiment of the present invention, base station receives being set up with second terminal after the request that D2D communicates for first terminal transmission, indicates that third terminal monitors the hair that first terminal is sent Existing signal, and when the signal quality for the discovery signal that the first terminal that third terminal is listened to is sent is less than predetermined quality threshold value, indicate that second terminal monitors D2D signals of communication according to third terminal to receive the first resource of D2D signals of communication, and the signal intensity of the D2D signals of communication listened in second terminal according to first resource be less than predetermined strength threshold value when, first resource is defined as recoverable resources, and the target resource that first terminal is used to send D2D signals of communication to second terminal is distributed in recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 34 is referred to, the method flow diagram of the resource allocation methods provided it illustrates another embodiment of the present invention.This method can be used for the reusable resource of terminal distribution for setting up D2D communications for request in allocated D2D resources.D2D resources in an ancient weapon made of bamboo system are fixed, and when first terminal request sets up D2D with second terminal to communicate, base station considers the idle D2D resources of distribution first, considers further that the allocated D2D resources of multiplexing.The resource allocation methods can include：

Step 2401, first terminal sends to base station and sets up the request that D2D communicates with second terminal；Discovery signal Discovery signals can periodically be sent on predetermined running time-frequency resource by supporting the terminal of D2D communications, when first terminal receives the discovery signal of second terminal transmission and detection can carry out D2D communications with the second terminal, the request that D2D communications are carried out with the second terminal can be sent to base station.

Step 2402, base station is detected whether in the presence of idle D2D resources；

In practical application, if base station detection has idle D2D resources, target resource is distributed from idle D2D resources, and detects whether the target resource of distribution is enough, if the target resource of distribution is enough, without subsequent step.

Step 2403, if in the absence of idle D2D resources, base station sends the 3rd instruction for including Secondary resource to second terminal；

If the target resource that base station is distributed from idle D2D resources is not enough or in the absence of idle D2D resources, the currently allocated resource for giving the 4th terminal as reception D2D signals of communication is sent to second terminal by base station as Secondary resource.

Wherein, base station can broadcast in high-level signaling, the high-level signaling of broadcast to second terminal and carry Secondary resource, to indicate second terminal according to Secondary resource monitoring D2D signals of communication.

Step 2404, second terminal monitors D2D signals of communication according to Secondary resource； Step 2405, second terminal returns to the 3rd to base station and responded；

Whether the 3rd signal intensity for responding for indicating the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value.

Second terminal monitors D2D signals of communication according to Secondary resource, and second terminal monitors D2D signals of communication according to first resource into the method shown in the specific steps and Figure 33 of the response of base station return the 3rd, and to base station return first respond the step of it is similar, here is omitted.

Step 2406, base station sends the 4th to the 4th terminal and instructed when the 3rd response indicates that the signal intensity for the D2D signals of communication that second terminal is listened to according to Secondary resource is less than predetermined strength threshold value；

In practical application, all the allocated D2D resources can be sent to second terminal by base station, monitor D2D signals of communication according to allocated D2D resources by second terminal, and return to the 3rd response to base station according to snoop results.The resource that the signal intensity for the D2D signals of communication that the second terminal that base station is indicated during the 3rd is responded is listened to according to this is less than predetermined strength threshold value is defined as primary election resource, and sends the 4th instruction to receive the terminal of D2D signals of communication to the allocated primary election resource.

Step 2407, the discovery signal that the 4th terminal monitoring first terminal is sent；

Step 2408, the 4th terminal returns to the 4th to base station and responded；

4th responds for indicating whether the signal quality for the discovery signal that the first terminal that the 4th terminal monitoring is arrived is sent is less than predetermined quality threshold value.

Step 2409, Secondary resource is defined as recoverable resources by base station when the 4th response indicates that the signal quality for the discovery signal that the first terminal that the 4th terminal monitoring is arrived is sent is less than predetermined quality threshold value.

It is less than predetermined quality threshold value to receive the signal quality for the discovery signal that the first terminal that the terminal monitoring of D2D signals of communication is arrived is sent if being allocated the primary election resource, the primary election resource is defined as recoverable resources by base station.

Step 2410, target resource is distributed in base station from recoverable resources；

Step 2411, target resource is sent to first terminal and second terminal by base station, sends D2D signals of communication according to target resource by first terminal, and receive D2D signals of communication according to target resource by second terminal.

It should be noted that, the embodiment of the present invention first considers the idle D2D resources of distribution with base station, in idle D2D inadequate resources, consider further that and be illustrated exemplified by the allocated resource of multiplexing, in actual applications, it can also first consider to be multiplexed allocated D2D resources, when recoverable resources or not enough recoverable resources are not present in allocated resource, consider further that the idle D2D resources of distribution. In summary, resource allocation methods provided in an embodiment of the present invention, base station receives being set up with second terminal after the request that D2D communicates for first terminal transmission, indicate that second terminal monitors D2D signals of communication according to distribute to the 4th terminal to receive the Secondary resource of D2D signals of communication, and when the signal intensity for the D2D signals of communication that second terminal is listened to is less than predetermined strength threshold value, indicate the discovery signal that the 4th terminal monitoring first terminal is sent, when the signal quality of the discovery signal of the 4th terminal monitoring is less than predetermined quality threshold value, Secondary resource is defined as recoverable resources, and the target resource that first terminal is used to send D2D signals of communication to second terminal is distributed in recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.Figure 35 is referred to, the system pie graph of the resource allocation system provided it illustrates one embodiment of the invention.The system can include any described base station 2501, the first terminal 25002 as described in Fig. 5 to Fig. 8 is any, the second terminal 2503 as described in Fig. 9 to Figure 12 is any and at least one third terminal 2504 as described in Figure 13 to Figure 16 is any and/or at least one 4th terminal 2505 as described in Figure 17 to Figure 20 is any as shown in Figure 1 to Figure 4.

In summary, resource allocation system provided in an embodiment of the present invention, by receiving what first terminal was sent, set up with second terminal after the request that end-to-end D2D communicates, first terminal and the reusable resource of second terminal are determined in the allocated D2D resources, and target resource is distributed from recoverable resources, solve in the prior art when asking the terminal quantity for setting up D2D communications more in base station range, the problem of being likely to occur situation distributable without idle D2D resources, reach the purpose for improving resource utilization and power system capacity.It should be noted that：The base station of above-described embodiment offer and terminal are when distributing D2D resources, only it is illustrated with the division of above-mentioned each functional module, in practical application, it can as needed and by above-mentioned functions distribute and be completed by different functional modules, the internal structure of equipment is divided into different functional modules, to complete all or part of function described above.In addition, base station, first terminal, second terminal, third terminal and the 4th terminal and resource allocation methods embodiment that above-described embodiment is provided belong to same design.

One of ordinary skill in the art will appreciate that realizing all or part of step of above-described embodiment can be completed by hardware, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable recording medium, storage medium mentioned above can be read-only storage, disk or CD etc.. Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims

Claims

1st, a kind of base station, it is characterised in that the base station includes：

Request receiving module, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

Resource determination module, for being determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources；

First resource distribute module, for distributing target resource from the recoverable resources；

First resource sending module, for the target resource to be sent into the first terminal, D2D signals of communication are sent by the first terminal according to the target resource；

Secondary resource sending module, for the target resource to be sent into the second terminal, D2D signals of communication are received by the second terminal according to the target resource.

2nd, base station according to claim 1, it is characterised in that the resource determination module, including：First instruction sending unit, is instructed for sending first to third terminal, and described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

First response receiving unit, for receiving the first response that the third terminal is returned, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

Second instruction sending unit, if the signal quality for indicating the discovery signal that the third terminal is listened to for the described first response is less than the predetermined quality threshold value, the second instruction for including first resource is then sent to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；

Second response receiving unit, for receiving the second response that the second terminal is returned, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

First determining unit, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response received, the first resource is defined as the recoverable resources. 3rd, base station according to claim 2, it is characterized in that, the first response receiving unit, for receiving the first response frame for including first response that the third terminal is sent, first response frame be the third terminal receive it is described first instruction after, according to the first resource send first D2D communication frame.

4th, base station according to claim 1, it is characterised in that the resource determination module, including：3rd instruction sending unit, the 3rd instruction of Secondary resource is included for being sent to the second terminal, and the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；

3rd response receiving unit, for receiving the 3rd response that the second terminal is returned, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

4th instruction sending unit, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the described 3rd response is less than the predetermined strength threshold value, then send the 4th to the 4th terminal to instruct, the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

4th response receiving unit, for receiving the 4th response that the 4th terminal is returned, whether the described 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；

Second determining unit, if indicating that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value for the 4th response received, the recoverable resources is defined as by the Secondary resource.

5th, base station according to claim 4, it is characterized in that, the 4th response receiving unit, for receiving the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal receive it is described 4th instruction after, according to the Secondary resource send first D2D communication frame.

6th, according to any described base station of claim 1 to 5, it is characterised in that the base station also includes：First detection module, is distributed after target resource, whether the target resource is sufficient for detecting from the recoverable resources； Second detection module, if the testing result for the first detection module is not enough for the target resource, is detected whether in the presence of idle D2D resources；

Secondary resource distribute module, if the testing result for second detection module is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources.

7th, according to any described base station of claim 1 to 5, it is characterised in that the base station also includes：3rd detection module, for before the first resource distribute module distributes target resource from the recoverable resources, detecting whether in the presence of idle D2D resources；

Information resources distribute module, if the testing result for the 3rd detection module is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources；

4th detection module, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The first resource distribute module, if the testing result for the 4th detection module is not enough for the target resource, the step of performing the distribution target resource from the recoverable resources.

8th, a kind of base station, it is characterised in that the base station includes：Receiver, processor and emitter；The receiver, for receive first terminal transmission be used for second terminal set up the request that end-to-end D2D communicates；

The processor, for being determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources；

The processor, for distributing target resource from the recoverable resources；

The processor, the first terminal and the second terminal are sent to for controlling the emitter by the target resource, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

9th, base station according to claim 8, it is characterised in that

The processor, is instructed for controlling the emitter to send first to third terminal, and described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

The receiver, for receiving the first response that the third terminal is returned, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；The processor, if indicating the discovery letter that the third terminal is listened to for the described first response Number signal quality be less than the predetermined quality threshold value, then control the emitter to send the second instruction for including first resource to the second terminal, the first resource is has distributed to the third terminal to receive

The D2D resources of D2D signals of communication, described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；

The receiver, for receiving the second response that the second terminal is returned, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；

The processor, if indicating that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value for second response that the receiver is received, the first resource is defined as the recoverable resources.

10th, base station according to claim 9, it is characterized in that, the receiver, for receiving the first response frame for including first response that the third terminal is sent, first response frame be the third terminal receive it is described first instruction after, according to the first resource send first D2D communication frame.

11st, base station according to claim 8, it is characterised in that

The processor, the 3rd instruction of Secondary resource is included for controlling the emitter to be sent to the second terminal, and the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；The receiver, for receiving the 3rd response that the second terminal is returned, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；

The processor, if the signal intensity for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource for the described 3rd response is less than the predetermined strength threshold value, the emitter is then controlled to send the 4th instruction to the 4th terminal, the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

The receiver, for receiving the 4th response that the 4th terminal is returned, whether the described 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；The processor, if indicating that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value for the 4th response that the receiver is received, by the Secondary resource It is defined as the recoverable resources.

12nd, base station according to claim 11, it is characterized in that, the receiver, for receiving the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal receive it is described 4th instruction after, according to the Secondary resource send first D2D communication frame.

13rd, according to any described base station of claim 8 to 12, it is characterised in that

The processor, is additionally operable to detection and is distributed from the recoverable resources after target resource, whether the target resource is sufficient；

The processor, if being that the target resource is not enough for testing result, is detected whether in the presence of idle D2D resources；

The processor, if being the presence of idle D2D resources for testing result, the target resource is distributed from the idle D2D resources.

14th, according to any described base station of claim 8 to 12, it is characterised in that

The processor, for before target resource is distributed from the recoverable resources, detecting whether in the presence of idle D2D resources；

The processor, if being the presence of idle D2D resources for testing result, the target resource is distributed from the idle D2D resources；

The processor, is distributed after the target resource, whether the target resource is sufficient for detecting from the idle D2D resources；

The processor, if being that the target resource is not enough for testing result, the step of performing the distribution target resource from the recoverable resources.

15th, first terminal, it is characterised in that the first terminal includes：

Request sending module, for being sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；First resource receiving module, for receiving the target resource that the base station is sent；

Signal of communication sending module, for sending D2D communications to the second terminal according to the target resource Signal.

16th, first terminal according to claim 15, it is characterised in that the first terminal also includes：It was found that signal transmitting module, sends for periodicity and finds signal.

17th, first terminal, it is characterised in that the first terminal includes：Processor, transmitter and receiver；

The processor, for controlling the emitter to be sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；

The receiver, for receiving the target resource that the base station is sent；

The processor, for control the emitter according to the target resource to the second terminal send D2D signals of communication.

18th, first terminal according to claim 17, it is characterised in that

The processor, is additionally operable to control the emitter periodically to send discovery signal.

19th, second terminal, it is characterised in that the second terminal includes：

Secondary resource receiving module, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

Signal of communication receiving module, for receiving the D2D signals of communication that the first terminal is sent according to the target resource.

20th, second terminal according to claim 19, it is characterised in that the second terminal also includes：Second command reception module, for before the Secondary resource receiving module receives the target resource that base station is sent, the second instruction for including first resource that the base station is sent is received, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

First monitors module, for monitoring D2D signals of communication according to the first resource； 5th detection module, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

Second response sending module, is responded for sending second to the base station according to first testing result, and whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

21st, second terminal according to claim 19, it is characterised in that the second terminal also includes：3rd command reception module, for before the Secondary resource receiving module receives the target resource that base station is sent, the 3rd instruction for including Secondary resource that the base station is sent is received, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

Second monitors module, for monitoring D2D signals of communication according to the Secondary resource；

6th detection module, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

3rd response sending module, is responded for sending the 3rd to the base station according to second testing result, and whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

22nd, second terminal, it is characterised in that the second terminal includes：Receiver and processor；The receiver, target resource for receiving base station transmission, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The processor, for controlling the receiver to receive the D2D signals of communication of the first terminal transmission according to the target resource.

23rd, second terminal according to claim 22, it is characterised in that the second terminal also includes：Emitter；

The receiver, is additionally operable to before the target resource that reception base station is sent, and receives the second instruction for including first resource that the base station is sent, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

The processor, for controlling the receiver according to first resource monitoring D2D signals of communication； The processor, the signal intensity for detecting the D2D signals of communication listened to according to the first resource obtains the first testing result；

The processor, responded for controlling the emitter to send second to the base station according to first testing result, whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

24th, second terminal according to claim 22, it is characterised in that the second terminal also includes：Emitter；

The receiver, for before the target resource that base station is sent is received, receiving the 3rd instruction for including Secondary resource that the base station is sent, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

The processor, for controlling the receiver according to Secondary resource monitoring D2D signals of communication；The processor, the signal intensity for detecting the D2D signals of communication listened to according to the Secondary resource obtains the second testing result；

The processor, for controlling the emitter according to second testing result to the base station the 3rd response of transmission, whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

25th, third terminal, it is characterised in that the third terminal includes：

First command reception module, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

3rd monitors module, for monitoring the discovery signal that the first terminal is sent；

7th detection module, the signal quality for detecting the discovery signal that the 3rd monitoring module is listened to, obtains the 3rd testing result；

First response sending module, is responded for sending first to the base station according to the 3rd testing result；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and be sent to the target resource The first terminal and the second terminal, send D2D signals of communication, and receive D2D signals of communication according to the target resource by the second terminal by the first terminal according to the target resource；

Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

26th, third terminal according to claim 25, it is characterized in that, the first response sending module, include the first response frame of first response for being sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

27th, third terminal, it is characterised in that the third terminal includes：Receiver, processor and emitter；

The receiver, the first instruction for receiving base station transmission, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；The processor, for controlling the receiver to monitor the discovery signal that the first terminal is sent；The processor, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 3rd testing result；

The processor, is responded for controlling the emitter to send first to the base station according to the 3rd testing result；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value. 28th, second terminal according to claim 27, it is characterized in that, the processor, include the first response frame of first response for controlling the emitter to be sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

29th, the 4th terminal, it is characterised in that the 4th terminal includes：

4th command reception module, the 4th instruction for receiving base station transmission；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicates, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；4th monitors module, for monitoring the discovery signal that the first terminal is sent；

8th detection module, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

4th response sending module, is responded for sending the 4th to the base station according to the 4th testing result；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

30th, the 4th terminal according to claim 29, it is characterized in that, the 4th response sending module, include the second response frame of the 4th response for being sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

31st, the 4th terminal, it is characterised in that the 4th terminal includes：Receiver, processor and emitter；

The receiver, the 4th instruction for receiving base station transmission；4th instruction exists for the base station Receive first terminal transmission be used for set up the request that D2D communicates with second terminal, the 3rd instruction for including Secondary resource is sent to the second terminal, receive the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

The processor, for controlling the receiver to monitor the discovery signal that the first terminal is sent；The processor, the signal quality of the discovery signal arrived for Anti-Sniffer obtains the 4th testing result；

The processor, for control the emitter according to the 4th testing result to the base station send the 4th response；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

32nd, the 4th terminal according to claim 31, it is characterized in that, the processor, include the second response frame of the 4th response for controlling the emitter to be sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

33rd, a kind of resource allocation methods, in base station, it is characterised in that methods described includes：What reception first terminal was sent is used to set up the request that end-to-end D2D communicates with second terminal；The recoverable resources by the first terminal and second terminal multiplexing is determined in the allocated D2D resources；

Target resource is distributed from the recoverable resources；

The target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal. 34th, the method according to claim 33, it is characterised in that the recoverable resources being determined in the allocated D2D resources by the first terminal and second terminal multiplexing, including：First is sent to third terminal to instruct, described first instructs for indicating that the third terminal monitors the discovery signal that the first terminal is sent；

The first response that the third terminal is returned is received, whether the described first signal quality for responding for indicating the discovery signal that the third terminal is listened to is less than predetermined quality threshold value；

If first response indicates that the signal quality for the discovery signal that the third terminal is listened to is less than the predetermined quality threshold value, the second instruction for including first resource is then sent to the second terminal, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；

The second response that the second terminal is returned is received, whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value；If second response received indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value, the first resource is defined as the recoverable resources.

35th, method according to claim 34, it is characterised in that the first response that the reception third terminal is returned, including：

Receive the first response frame for including first response that the third terminal is sent, first response frame be the third terminal after first instruction is received, the first D2D communication frame sent according to the first resource.

36th, the method according to claim 33, it is characterised in that the recoverable resources being determined in the allocated D2D resources by the first terminal and second terminal multiplexing, including：The 3rd instruction for including Secondary resource is sent to the second terminal, the Secondary resource is to have distributed to D2D resource of the 4th terminal to receive D2D signals of communication；Described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication；

The 3rd response that the second terminal is returned is received, whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；Believe if the 3rd response indicates that the D2D that the second terminal is listened to according to the Secondary resource communicates Number signal intensity be less than the predetermined strength threshold value, then sending the 4th to the 4th terminal instructs, and the described 4th instructs for indicating the discovery signal that first terminal described in the 4th terminal monitoring is sent；

The 4th response that the 4th terminal is returned is received, whether the described 4th signal quality for responding for indicating the discovery signal that the 4th terminal monitoring is arrived is less than predetermined quality threshold value；

If the 4th response received indicates that the signal quality for the discovery signal that the 4th terminal monitoring is arrived is less than the predetermined quality threshold value, the Secondary resource is defined as the recoverable resources.

37th, method according to claim 36, it is characterised in that the 4th response that reception the 4th terminal is returned, including：

Receive the second response frame for including the 4th response that the 4th terminal is sent, second response frame be the 4th terminal after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

38th, according to any described method of claim 33 to 37, it is characterised in that methods described also includes：

Detection is distributed after target resource from the recoverable resources, and whether the target resource is sufficient；If testing result is that the target resource is not enough, detect whether in the presence of idle D2D resources；If testing result is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources.

39th, according to any described method of claim 33 to 37, it is characterised in that described to be distributed from the recoverable resources before target resource, methods described also includes：

Detect whether in the presence of idle D2D resources；

If testing result is the presence of idle D2D resources, the target resource is distributed from the idle D2D resources；

Detection is distributed after the target resource from the idle D2D resources, and whether the target resource is sufficient；

If testing result is that the target resource is not enough, the step of performing the distribution target resource from the recoverable resources.

40th, a kind of resource allocation methods, in first terminal, it is characterised in that methods described includes： Sent to base station for setting up the request that end-to-end D2D communicates with second terminal, it is described to ask for indicating that the base station is determined to the recoverable resources by the first terminal and second terminal multiplexing in the allocated D2D resources, and distribute target resource from the recoverable resources；

Receive the target resource that the base station is sent；

D2D signals of communication are sent to the second terminal according to the target resource.

41st, method according to claim 40, it is characterised in that methods described also includes：Periodically send and find signal.

42nd, a kind of resource allocation methods, in second terminal, it is characterised in that methods described includes：Receive the target resource that base station is sent, the target resource be the base station receive first terminal transmission be used for set up with the second terminal after the request that end-to-end D2D communicates, the recoverable resources by the first terminal and second terminal multiplexing, and the resource distributed from the recoverable resources are determined in the allocated D2D resources；

The D2D signals of communication that the first terminal is sent are received according to the target resource.

43rd, method according to claim 42, it is characterised in that before the target resource that the reception base station is sent, methods described also includes：

The second instruction for including first resource that the base station is sent is received, the first resource is to have distributed to D2D resource of the third terminal to receive D2D signals of communication；

D2D signals of communication are monitored according to the first resource；

The signal intensity of the D2D signals of communication listened to according to the first resource is detected, the first testing result is obtained；

Second is sent according to first testing result to the base station to respond, whether the described second signal intensity for responding the D2D signals of communication for indicating to listen to according to the first resource is less than predetermined strength threshold value.

44th, method according to claim 42, it is characterised in that before the target resource that the reception base station is sent, methods described also includes：

The 3rd instruction for including Secondary resource that the base station is sent is received, the Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication；

D2D signals of communication are monitored according to the Secondary resource； The signal intensity of the D2D signals of communication listened to according to the Secondary resource is detected, the second testing result is obtained；

The 3rd is sent according to second testing result to the base station to respond, whether the described 3rd signal intensity for responding the D2D signals of communication for indicating to listen to according to the Secondary resource is less than predetermined strength threshold value.

45th, a kind of resource allocation methods, in third terminal, it is characterised in that methods described includes：Receive the first instruction that base station is sent, first instruction for the base station receive first terminal transmission be used to set up the request that D2D communicates with second terminal after the instruction that sends；

Monitor the discovery signal that the first terminal is sent；

The signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 3rd testing result；

First is sent according to the 3rd testing result to the base station to respond；When the signal quality for the discovery signal for indicating to listen in the described first response by the base station is less than predetermined quality threshold value, the second instruction for including first resource is sent to the second terminal, and receive the second response that the second terminal is returned, and when the described second response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the first resource is less than predetermined strength threshold value, the first resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal；

Wherein, the first resource is has distributed to D2D resource of the third terminal to receive D2D signals of communication, and described second instructs for indicating the second terminal according to first resource monitoring D2D signals of communication；Whether the described second signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the first resource is less than the predetermined strength threshold value.

46th, method according to claim 45, it is characterised in that described that first response is sent to the base station according to the 3rd testing result, including：

The first response frame for including first response is sent to the base station, first response frame is the first D2D communication frame sent according to the first resource after first instruction is received.

47th, a kind of resource allocation methods, in the 4th terminal, it is characterised in that methods described includes：Receive the 4th instruction that base station is sent；4th instruction for the base station receive first terminal transmission be used for second terminal set up the request that D2D communicate, include the second money to second terminal transmission 3rd instruction in source, receives the 3rd response that the second terminal is returned, and the instruction sent when the described 3rd response indicates that the signal intensity for the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than predetermined strength threshold value；The Secondary resource is to have distributed to resource of the 4th terminal to receive D2D signals of communication, described 3rd instructs for indicating the second terminal according to Secondary resource monitoring D2D signals of communication, and whether the described 3rd signal intensity for responding for indicating the D2D signals of communication that the second terminal is listened to according to the Secondary resource is less than the predetermined strength threshold value；

Monitor the discovery signal that the first terminal is sent；

The signal quality for the discovery signal that Anti-Sniffer is arrived, obtains the 4th testing result；

The 4th is sent according to the 4th testing result to the base station to respond；Whether the described 4th signal quality for responding the discovery signal for indicating to listen to is less than predetermined quality threshold value；When the signal quality for the discovery signal for indicating to listen in the described 4th response by the base station is less than the predetermined quality threshold value, the Secondary resource is defined as recoverable resources, target resource is distributed from the recoverable resources, and the target resource is sent to the first terminal and the second terminal, D2D signals of communication are sent according to the target resource by the first terminal, and D2D signals of communication are received according to the target resource by the second terminal.

48th, method according to claim 47, it is characterised in that described that 4th response is sent to the base station according to the 4th testing result, including：

The second response frame for including the 4th response is sent to the base station, second response frame is described after the 4th instruction is received, the first D2D communication frame sent according to the Secondary resource.

49th, a kind of resource allocation system, it is characterised in that the system includes：

Base station as described in claim 1 to 14 is any, the first terminal as described in claim 15 to 18 is any, the second terminal as described in claim 19 to 24 is any and at least one it is as any such as claim 25 to 28 as described in third terminal and/or at least one it is as any such as claim 29 to 32 as described in the 4th terminal.