CN104703224B - Resource allocation method, device and terminal for D2D communications - Google Patents
Resource allocation method, device and terminal for D2D communications Download PDFInfo
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- CN104703224B CN104703224B CN201510166178.8A CN201510166178A CN104703224B CN 104703224 B CN104703224 B CN 104703224B CN 201510166178 A CN201510166178 A CN 201510166178A CN 104703224 B CN104703224 B CN 104703224B
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- resource pool
- transfer resource
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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Abstract
The present invention provides a kind of resource allocation method, device and terminal for D2D communications, wherein, for the resource allocation method of D2D communications, including：Determine the need for providing the D2D relay functions of communication for other-end；When determining to need to provide the relay function of D2D communications for the other-end, it is configured to carry out the transfer resource of D2D communications to the other-end, so that the other-end carries out D2D communications by the transfer resource.Technical scheme can make full use of the secondary link connection that D2D communicates, and realize the flexible configuration to the transfer resource of other-end, efficiently solve the resource allocation problem in D2D communications.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of resource allocation method to communicate for D2D, one
Kind is used for the device for allocating resources of D2D communications and a kind of terminal.
Background technology
(Device to Device, i.e. D2D, are that the terminal that 3GPP Rel-12 are introduced is directly logical to the direct-connected communication technology of terminal
The technology of letter, it is allowed to user data transmission without cellular network infrastructure) refer between user terminal (UE) can be into
Row direct communication, without the transmission or forwarding by equipment such as base station (eNB), D2D communications can be deployed in cellular network
Coverage in and/or network coverage outside.
UE-NW (UE-to-Network) relayings are the new features introduced in D2D communications, have the advantages that flexible deployment,
Network coverage can be expanded in the case where not increasing conventional network equipment, in business telecommunication even public safety communication
There is important application in (such as earthquake, war) field.The UE-NW relay systems of unicast are as shown in Figure 1, when (the i.e. distal end of terminal 106
When UE) outside the network coverage in base station 102, it can not establish good connection with base station 102, but can be with closing on
Terminal 104 (relaying UE) in network coverage establishes good D2D communications, therefore, terminal 106 can by relay UE with
Base station or other network nodes are connected.
At present, link definition during 3GPP communicates D2D between UE is secondary link (Side link), and define with
The lower two spike-type cultivars method of salary distribution：
Mode one：Under RRC connection status, UE asks transfer resource to eNB, and eNB is UE tune according to the information that reports of UE
Resource is spent, resource pool is not required in such a mode；
Mode two：UE independently selects transfer resource from resource pool, needs pre-configured resource pool or eNB to configure at this time
Resource pool.
When UE is in network coverage, can be configured according to eNB using any of above two mode side
Formula carries out resource allocation；And in employing mode two, resource pool information is configured by eNB by sending RRC signaling.
When UE is in outside network coverage, above-mentioned second of resource distribution mode can only be used, and using pre-configured
Resource pool.
In the case where UE-NW relays operating mode, part UE is in network coverage, and part UE is in network coverage
Outside, current D2D communications not yet provide this special resource allocation method, if still made according to existing way, distal end UE
With pre-configured resource pool, relaying UE is scheduled using the eNB resource pools configured or by eNB, then does not make full use of D2D's
, there is the waste to eNB resources allocation abilities in secondary link connection, while also do not account for some relaying UE and competent can provide
Source allocative abilities.
The content of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of new resource for being used for D2D communications is matched somebody with somebody
Scheme is put, the secondary link connection that D2D can be made full use of to communicate, realizes the flexible configuration to the transfer resource of other-end,
Efficiently solve the resource allocation problem in D2D communications.
In view of this, the present invention proposes a kind of resource allocation method for being used for D2D communications suitable for terminal, including：
Determine the need for providing the D2D relay functions of communication for other-end；Lead to determining to need to provide D2D for the other-end
During the relay function of letter, it is configured to carry out the transfer resource of D2D communications to the other-end, so that the other-end leads to
Cross the transfer resource and carry out D2D communications.
In the technical scheme, terminal is by when determining to need to provide the relay function of D2D communications for other-end, to
Other-end is configured to carry out the transfer resource of D2D communications so that when other-end is not in the coverage of base station,
The configuration of transfer resource can be realized by being used as the terminal of relaying UE, the secondary link connection of D2D communications is taken full advantage of, realizes
To the flexible configuration of the transfer resource of other-end, the resource allocation problem in D2D communications is efficiently solved.
Wherein, the step of configuring the transfer resource to the other-end in above-mentioned technical proposal specifically includes following several
Kind mode：
Mode one：
Obtain the resource pool of base station distribution；
The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；Or connecing
When receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, for described
Other-end selects the transfer resource from the resource pool.
In the technical scheme, the terminal as relaying UE can obtain the resource pool of base station distribution, and will get
Resource pool is broadcasted to other-end, to select transfer resource from the resource pool received by other-end；Alternatively, it is also possible to not
The resource pool got is broadcasted, but when receiving the resource allocation request of other-end transmission, then the resource that will be got
Pond is transmitted to other-end.
Mode two：
According to the historical channel quality indicated value and/or Buffer Status Report of record, autonomous configuration leads to for carrying out D2D
The resource pool of letter；
The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；Or connecing
When receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, for described
Other-end selects the transfer resource from the resource pool.
In the technical scheme, channel quality indicated value represents the communication quality between D2D communications, Buffer Status Report
Represent D2D communications data volume waiting for transmission, therefore can be indicated as the terminal of relaying UE according to the historical channel quality of record
Value and Buffer Status Report, active arrangement are used for the resource pool for carrying out D2D communications so that the resource pool energy of terminal autonomous configuration
Enough it is more convenient for carrying out D2D communications.Wherein, equally can be with the resource pool of broadcast configuration, Huo Zhe after resource pool configuration is completed
The resource pool of configuration is sent to other-end again during the resource allocation request for receiving other-end transmission.
In the above-mentioned technical solutions, it is preferable that the historical channel quality indicated value and/or the Buffer Status Report
Including：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports
Road quality indicated value and/or Buffer Status Report.
In the above-mentioned technical solutions, it is preferable that further include：Detection is carried out in D2D communication process with the other-end
Data transmission delay and signal transmission quality；If the data transmission delay carried out with the other-end in D2D communication process is big
In or equal to default time delay value, and/or the signal transmission quality is less than or equal to preset quality value, then reconfigures the money
Source pond.
In the technical scheme, by detecting the data transmission delay in carrying out D2D communication process with other-end
More than or equal to default time delay value, and/or when signal transmission quality is less than or equal to preset quality value, resource pool is reconfigured,
Make it possible to the transfer resource when D2D communication qualities are poor, to upgrade in time in resource pool, led to the D2D ensured between terminal
Believe quality.
Mode three：
Measure the current channel quality indicated value of the terminal and/or current buffer state；
According to the current historical channel quality indicated value of the terminal and/or the current buffer state, institute is configured
State the transfer resource that terminal is used to carry out D2D communications；
When receiving the resource allocation request of other-end transmission, to other-end distribution be used to reporting it is described its
The present channel quality indicated value of his terminal and/or the transfer resource of current buffer state report, for the other-end
Send the present channel quality indicated value and/or current buffer state report of the other-end；
The present channel quality indicated value of the other-end sent according to the other-end and/or current buffer
State report, is configured to carry out the transfer resource of D2D communications to the other-end.
In the technical scheme, by according to the current channel quality indicated value of terminal and/or current buffer state
Carry out the transfer resource that configurating terminal carries out D2D communications, and according to the present channel quality indicated value of other-end and/or current slow
Rush zone state and report the transfer resource for being configured to other-end and carrying out D2D communications, enabling the biography to communicating for D2D in real time
Defeated resource carries out reasonable disposition, to ensure that the communications of the D2D between terminal have higher communication quality.
In the above-mentioned technical solutions, it is preferable that further include：In each Transmission Time Interval or often pass through scheduled duration,
Configure again the terminal be used for carry out D2D communications transfer resource and the other-end be used for carry out D2D communications
Transfer resource, wherein, the scheduled duration is more than the Transmission Time Interval.
In the technical scheme, can be between each time in order to ensure D2D communications have higher communication quality always
Every the interior transfer resource for being configured to carry out D2D communications again；It is of course also possible to weighed again at interval of after long period of time
New configuration.
In the above-mentioned technical solutions, it is preferable that further include：Selection is carried out with the other-end from the resource pool
The transfer resource of D2D communications.
In the above-mentioned technical solutions, it is preferable that the transfer resource includes：Running time-frequency resource and transmission mode.
In the above-mentioned technical solutions, it is preferable that further include：According to the current state information of the terminal and/or the end
The network condition being presently in is held, sets the pattern for the transfer resource for being configured to carry out D2D communications to the other-end.Tool
Body, above-mentioned three kinds of resources employment methods can be used alone, can also be according to the current state information and/or terminal of terminal
The network condition being presently in neatly is switched over, combined.Wherein, the current state information of terminal includes：Terminal waits money
The time of source configuration, battery capacity of terminal etc.；The network condition that terminal is presently in includes：The channel quality of D2D communications, do
Disturb size etc..
According to another aspect of the present invention, it is also proposed that a kind of resource distribution dress for being used for D2D communications suitable for terminal
Put, including：Determination unit, is used to determine whether to need to provide the D2D relay functions of communication for other-end；Dispensing unit, is used
In when the determination unit determines to need to provide the relay function of D2D communications for the other-end, to the other-end
It is configured to carry out the transfer resource of D2D communications, so that the other-end carries out D2D communications by the transfer resource.
In the technical scheme, terminal is by when determining to need to provide the relay function of D2D communications for other-end, to
Other-end is configured to carry out the transfer resource of D2D communications so that when other-end is not in the coverage of base station,
The configuration of transfer resource can be realized by being used as the terminal of relaying UE, the secondary link connection of D2D communications is taken full advantage of, realizes
To the flexible configuration of the transfer resource of other-end, the resource allocation problem in D2D communications is efficiently solved.
Wherein, the mode of dispensing unit to the other-end configuration transfer resource specifically includes following several：
Mode one：
The dispensing unit includes：
Acquiring unit, for obtaining the resource pool of base station distribution；
First radio unit, for broadcasting the resource pool, so that the other-end selects institute from the resource pool
State transfer resource；Or
First interactive unit, for when receiving the resource allocation request that the other-end is sent, by the resource
Pond is sent to the other-end, so that the other-end selects the transfer resource from the resource pool.
In the technical scheme, the terminal as relaying UE can obtain the resource pool of base station distribution, and will get
Resource pool is broadcasted to other-end, to select transfer resource from the resource pool received by other-end；Alternatively, it is also possible to not
The resource pool got is broadcasted, but when receiving the resource allocation request of other-end transmission, then the resource that will be got
Pond is transmitted to other-end.
Mode two：
The dispensing unit includes：
First processing units, for the historical channel quality indicated value and/or Buffer Status Report according to record, independently
It is configured to carry out the resource pool of D2D communications；
Second radio unit, for broadcasting the resource pool, so that the other-end selects institute from the resource pool
State transfer resource；Or
Second interactive unit, for when receiving the resource allocation request that the other-end is sent, by the resource
Pond is sent to the other-end, so that the other-end selects the transfer resource from the resource pool.
In the technical scheme, channel quality indicated value represents the communication quality between D2D communications, Buffer Status Report
Represent D2D communications data volume waiting for transmission, therefore can be indicated as the terminal of relaying UE according to the historical channel quality of record
Value and Buffer Status Report, active arrangement are used for the resource pool for carrying out D2D communications so that the resource pool energy of terminal autonomous configuration
Enough it is more convenient for carrying out D2D communications.Wherein, equally can be with the resource pool of broadcast configuration, Huo Zhe after resource pool configuration is completed
The resource pool of configuration is sent to other-end again during the resource allocation request for receiving other-end transmission.
In the above-mentioned technical solutions, it is preferable that the historical channel quality indicated value and/or the Buffer Status Report
Including：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports
Road quality indicated value and/or Buffer Status Report.
In the above-mentioned technical solutions, it is preferable that the dispensing unit further includes：Detection unit, for detect with it is described its
His terminal carries out data transmission delay and signal transmission quality in D2D communication process；The first processing units are additionally operable to,
It is default that the detection unit detects that the data transmission delay carried out with the other-end in D2D communication process is greater than or equal to
Time delay value, and/or when the signal transmission quality is less than or equal to preset quality value, reconfigure the resource pool.
In the technical scheme, by detecting the data transmission delay in carrying out D2D communication process with other-end
More than or equal to default time delay value, and/or when signal transmission quality is less than or equal to preset quality value, resource pool is reconfigured,
Make it possible to the transfer resource when D2D communication qualities are poor, to upgrade in time in resource pool, led to the D2D ensured between terminal
Believe quality.
Mode three：
The dispensing unit includes：Measuring unit, for measuring the current channel quality indicated value of the terminal and/or working as
Preceding buffer state；
Second processing unit, for according to the current historical channel quality indicated value of the terminal and/or described current
Buffer state, configures the transfer resource that the terminal is used to carry out D2D communications, and for receiving other-end transmission
During resource allocation request, to the other-end distribution be used for report the other-end present channel quality indicated value and/
Or the transfer resource of current buffer state report, so that the other-end sends the present channel quality of the other-end
Indicated value and/or current buffer state report, and
The second processing unit is additionally operable to the present channel matter of the other-end sent according to the other-end
Amount instruction value and/or current buffer state report, are configured to carry out the transfer resource of D2D communications to the other-end.
In the technical scheme, by according to the current channel quality indicated value of terminal and/or current buffer state
Carry out the transfer resource that configurating terminal carries out D2D communications, and according to the present channel quality indicated value of other-end and/or current slow
Rush zone state and report the transfer resource for being configured to other-end and carrying out D2D communications, enabling the biography to communicating for D2D in real time
Defeated resource carries out reasonable disposition, to ensure that the communications of the D2D between terminal have higher communication quality.
In the above-mentioned technical solutions, it is preferable that the second processing unit is additionally operable to：In each Transmission Time Interval or every
By scheduled duration, configure the terminal again is used to carry out the transfer resource of D2D communications and the use of the other-end
In the transfer resource for carrying out D2D communications, wherein, the scheduled duration is more than the Transmission Time Interval.
In the technical scheme, can be between each time in order to ensure D2D communications have higher communication quality always
Every the interior transfer resource for being configured to carry out D2D communications again；It is of course also possible to weighed again at interval of after long period of time
New configuration.
In the above-mentioned technical solutions, it is preferable that further include：Selecting unit, for from the resource pool selection with it is described
Other-end carries out the transfer resource of D2D communications.
In the above-mentioned technical solutions, it is preferable that the transfer resource includes：Running time-frequency resource and transmission mode.
In the above-mentioned technical solutions, it is preferable that the dispensing unit is additionally operable to：According to the current state information of the terminal
And/or the network condition that the terminal is presently in, set the transmission money for being configured to carry out D2D communications to the other-end
The pattern in source.Specifically, three kinds of above-mentioned resources employment methods can be used alone, and can also be believed according to the current state of terminal
The network condition that breath and/or terminal are presently in neatly is switched over, combined.Wherein, the current state information of terminal includes：
The time of terminal wait resource distribution, battery capacity of terminal etc.；The network condition that terminal is presently in includes：D2D communications
Channel quality, interference size etc..
According to another aspect of the invention, it is also proposed that a kind of terminal, including：As described in any of the above-described technical solution
Be used for D2D communication device for allocating resources.
By above technical scheme, the secondary link connection that D2D can be made full use of to communicate, realizes the biography to other-end
The flexible configuration of defeated resource, efficiently solves the resource allocation problem in D2D communications.
Brief description of the drawings
Fig. 1 shows the system structure diagram that UE-NW is relayed in D2D communications；
Fig. 2 shows the resource allocation method according to an embodiment of the invention that be used for D2D communications suitable for terminal
Schematic flow diagram；
Fig. 3 shows the device for allocating resources according to an embodiment of the invention that be used for D2D communications suitable for terminal
Schematic block diagram；
Fig. 4 A show the flow diagram of resources employment methods according to first embodiment of the invention；
Fig. 4 B show the flow diagram of the resources employment methods of second embodiment according to the present invention；
Fig. 5 A show the flow diagram of the resources employment methods of the 3rd embodiment according to the present invention；
Fig. 5 B show the flow diagram of the resources employment methods of the 4th embodiment according to the present invention；
Fig. 6 A show the flow diagram of the resources employment methods of the 5th embodiment according to the present invention；
Fig. 6 B show the flow diagram of resources employment methods according to the sixth embodiment of the present.
Embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the case where there is no conflict, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented using other different from other modes described here, therefore, protection scope of the present invention and from described below
Specific embodiment limitation.
Fig. 2 shows the resource allocation method according to an embodiment of the invention that be used for D2D communications suitable for terminal
Schematic flow diagram.
As shown in Fig. 2, the resource allocation method according to an embodiment of the invention that be used for D2D communications suitable for terminal,
Including：Step 202, it is determined whether need to provide the D2D relay functions of communication for other-end；Step 204, it is in definite needs
When the other-end provides the relay function of D2D communications, the transmission for being configured to carry out D2D communications to the other-end provides
Source, so that the other-end carries out D2D communications by the transfer resource.
In the technical scheme, terminal is by when determining to need to provide the relay function of D2D communications for other-end, to
Other-end is configured to carry out the transfer resource of D2D communications so that when other-end is not in the coverage of base station,
The configuration of transfer resource can be realized by being used as the terminal of relaying UE, the secondary link connection of D2D communications is taken full advantage of, realizes
To the flexible configuration of the transfer resource of other-end, the resource allocation problem in D2D communications is efficiently solved.
Wherein, the step of configuring the transfer resource to the other-end in above-mentioned technical proposal specifically includes following several
Kind mode：
Mode one：
Obtain the resource pool of base station distribution；
The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；Or connecing
When receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, for described
Other-end selects the transfer resource from the resource pool.
In the technical scheme, the terminal as relaying UE can obtain the resource pool of base station distribution, and will get
Resource pool is broadcasted to other-end, to select transfer resource from the resource pool received by other-end；Alternatively, it is also possible to not
The resource pool got is broadcasted, but when receiving the resource allocation request of other-end transmission, then the resource that will be got
Pond is transmitted to other-end.
Mode two：
According to the historical channel quality indicated value and/or Buffer Status Report of record, autonomous configuration leads to for carrying out D2D
The resource pool of letter；
The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；Or connecing
When receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, for described
Other-end selects the transfer resource from the resource pool.
In the technical scheme, channel quality indicated value represents the communication quality between D2D communications, Buffer Status Report
Represent D2D communications data volume waiting for transmission, therefore can be indicated as the terminal of relaying UE according to the historical channel quality of record
Value and Buffer Status Report, active arrangement are used for the resource pool for carrying out D2D communications so that the resource pool energy of terminal autonomous configuration
Enough it is more convenient for carrying out D2D communications.Wherein, equally can be with the resource pool of broadcast configuration, Huo Zhe after resource pool configuration is completed
The resource pool of configuration is sent to other-end again during the resource allocation request for receiving other-end transmission.
In the above-mentioned technical solutions, it is preferable that the historical channel quality indicated value and/or the Buffer Status Report
Including：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports
Road quality indicated value and/or Buffer Status Report.
In the above-mentioned technical solutions, it is preferable that further include：Detection is carried out in D2D communication process with the other-end
Data transmission delay and signal transmission quality；If the data transmission delay carried out with the other-end in D2D communication process is big
In or equal to default time delay value, and/or the signal transmission quality is less than or equal to preset quality value, then reconfigures the money
Source pond.
In the technical scheme, by detecting the data transmission delay in carrying out D2D communication process with other-end
More than or equal to default time delay value, and/or when signal transmission quality is less than or equal to preset quality value, resource pool is reconfigured,
Make it possible to the transfer resource when D2D communication qualities are poor, to upgrade in time in resource pool, led to the D2D ensured between terminal
Believe quality.
Mode three：
Measure the current channel quality indicated value of the terminal and/or current buffer state；
According to the current historical channel quality indicated value of the terminal and/or the current buffer state, institute is configured
State the transfer resource that terminal is used to carry out D2D communications；
When receiving the resource allocation request of other-end transmission, to other-end distribution be used to reporting it is described its
The present channel quality indicated value of his terminal and/or the transfer resource of current buffer state report, for the other-end
Send the present channel quality indicated value and/or current buffer state report of the other-end；
The present channel quality indicated value of the other-end sent according to the other-end and/or current buffer
State report, is configured to carry out the transfer resource of D2D communications to the other-end.
In the technical scheme, by according to the current channel quality indicated value of terminal and/or current buffer state
Carry out the transfer resource that configurating terminal carries out D2D communications, and according to the present channel quality indicated value of other-end and/or current slow
Rush zone state and report the transfer resource for being configured to other-end and carrying out D2D communications, enabling the biography to communicating for D2D in real time
Defeated resource carries out reasonable disposition, to ensure that the communications of the D2D between terminal have higher communication quality.
In the above-mentioned technical solutions, it is preferable that further include：In each Transmission Time Interval or often pass through scheduled duration,
Configure again the terminal be used for carry out D2D communications transfer resource and the other-end be used for carry out D2D communications
Transfer resource, wherein, the scheduled duration is more than the Transmission Time Interval.
In the technical scheme, can be between each time in order to ensure D2D communications have higher communication quality always
Every the interior transfer resource for being configured to carry out D2D communications again；It is of course also possible to weighed again at interval of after long period of time
New configuration.
In the above-mentioned technical solutions, it is preferable that further include：Selection is carried out with the other-end from the resource pool
The transfer resource of D2D communications.
In the above-mentioned technical solutions, it is preferable that the transfer resource includes：Running time-frequency resource and transmission mode.
In the above-mentioned technical solutions, it is preferable that further include：According to the current state information of the terminal and/or the end
The network condition being presently in is held, sets the pattern for the transfer resource for being configured to carry out D2D communications to the other-end.Tool
Body, above-mentioned three kinds of resources employment methods can be used alone, can also be according to the current state information and/or terminal of terminal
The network condition being presently in neatly is switched over, combined.Wherein, the current state information of terminal includes：Terminal waits money
The time of source configuration, battery capacity of terminal etc.；The network condition that terminal is presently in includes：The channel quality of D2D communications, do
Disturb size etc..
Fig. 3 shows the device for allocating resources according to an embodiment of the invention that be used for D2D communications suitable for terminal
Schematic block diagram.
As described in Figure 3, the device for allocating resources according to an embodiment of the invention that be used for D2D communications suitable for terminal
300, including：Determination unit 302 and dispensing unit 304.
Wherein it is determined that unit 302, is used to determine whether to need to provide the D2D relay functions of communication for other-end；Configuration
Unit 304, for when the determination unit 302 determines to need to provide the relay function of D2D communications for the other-end, to
The other-end be configured to carry out D2D communications transfer resource so that the other-end by the transfer resource into
Row D2D communicates.
In the technical scheme, terminal is by when determining to need to provide the relay function of D2D communications for other-end, to
Other-end is configured to carry out the transfer resource of D2D communications so that when other-end is not in the coverage of base station,
The configuration of transfer resource can be realized by being used as the terminal of relaying UE, the secondary link connection of D2D communications is taken full advantage of, realizes
To the flexible configuration of the transfer resource of other-end, the resource allocation problem in D2D communications is efficiently solved.
Wherein, the mode of dispensing unit 304 to the other-end configuration transfer resource specifically includes following several：
Mode one：
The dispensing unit 304 includes：
Acquiring unit 304A, for obtaining the resource pool of base station distribution；
First radio unit 304B, for broadcasting the resource pool, so that the other-end is selected from the resource pool
Select the transfer resource；Or
First interactive unit 304C, described in when receiving the resource allocation request that the other-end is sent, inciting somebody to action
Resource pool is sent to the other-end, so that the other-end selects the transfer resource from the resource pool.
In the technical scheme, the terminal as relaying UE can obtain the resource pool of base station distribution, and will get
Resource pool is broadcasted to other-end, to select transfer resource from the resource pool received by other-end；Alternatively, it is also possible to not
The resource pool got is broadcasted, but when receiving the resource allocation request of other-end transmission, then the resource that will be got
Pond is transmitted to other-end.
Mode two：
The dispensing unit 304 includes：
First processing units 304D, for the historical channel quality indicated value and/or Buffer Status Report according to record,
Autonomous configuration is used for the resource pool for carrying out D2D communications；
Second radio unit 304E, for broadcasting the resource pool, so that the other-end is selected from the resource pool
Select the transfer resource；Or
Second interactive unit 304F, described in when receiving the resource allocation request that the other-end is sent, inciting somebody to action
Resource pool is sent to the other-end, so that the other-end selects the transfer resource from the resource pool.
In the technical scheme, channel quality indicated value represents the communication quality between D2D communications, Buffer Status Report
Represent D2D communications data volume waiting for transmission, therefore can be indicated as the terminal of relaying UE according to the historical channel quality of record
Value and Buffer Status Report, active arrangement are used for the resource pool for carrying out D2D communications so that the resource pool energy of terminal autonomous configuration
Enough it is more convenient for carrying out D2D communications.Wherein, equally can be with the resource pool of broadcast configuration, Huo Zhe after resource pool configuration is completed
The resource pool of configuration is sent to other-end again during the resource allocation request for receiving other-end transmission.
In the above-mentioned technical solutions, it is preferable that the historical channel quality indicated value and/or the Buffer Status Report
Including：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports
Road quality indicated value and/or Buffer Status Report.
In the above-mentioned technical solutions, it is preferable that the dispensing unit 304 further includes：Detection unit 304G, for detect with
The other-end carries out the data transmission delay and signal transmission quality in D2D communication process；The first processing units
304D is additionally operable to, and the data transfer in carrying out D2D communication process with the other-end is detected in the detection unit 304G
Time delay is greater than or equal to default time delay value, and/or when the signal transmission quality is less than or equal to preset quality value, reconfigures
The resource pool.
In the technical scheme, by detecting the data transmission delay in carrying out D2D communication process with other-end
More than or equal to default time delay value, and/or when signal transmission quality is less than or equal to preset quality value, resource pool is reconfigured,
Make it possible to the transfer resource when D2D communication qualities are poor, to upgrade in time in resource pool, led to the D2D ensured between terminal
Believe quality.
Mode three：
The dispensing unit 304 includes：Measuring unit 304H, the channel quality indicated value current for measuring the terminal
And/or current buffer state；
Second processing unit 304I, for according to the current historical channel quality indicated value of the terminal and/or it is described work as
Preceding buffer state, configures the transfer resource that the terminal is used to carry out D2D communications, and for receiving other-end hair
During the resource allocation request sent, the present channel quality indicated value to other-end distribution for reporting the other-end
And/or the transfer resource of current buffer state report, so that the other-end sends the present channel of the other-end
Quality indicated value and/or current buffer state report, and
The second processing unit 304I is additionally operable to the current letter of the other-end sent according to the other-end
Road quality indicated value and/or current buffer state report, the transmission for being configured to carry out D2D communications to the other-end provide
Source.
In the technical scheme, by according to the current channel quality indicated value of terminal and/or current buffer state
Carry out the transfer resource that configurating terminal carries out D2D communications, and according to the present channel quality indicated value of other-end and/or current slow
Rush zone state and report the transfer resource for being configured to other-end and carrying out D2D communications, enabling the biography to communicating for D2D in real time
Defeated resource carries out reasonable disposition, to ensure that the communications of the D2D between terminal have higher communication quality.
In the above-mentioned technical solutions, it is preferable that the second processing unit 304I is additionally operable to：In each Transmission Time Interval
Or often pass through scheduled duration, configure again the terminal be used for carry out the transfer resource of D2D communications and the other-end
Be used for carry out the transfer resources of D2D communications, wherein, the scheduled duration is more than the Transmission Time Interval.
In the technical scheme, can be between each time in order to ensure D2D communications have higher communication quality always
Every the interior transfer resource for being configured to carry out D2D communications again；It is of course also possible to weighed again at interval of after long period of time
New configuration.
In the above-mentioned technical solutions, it is preferable that further include：Selecting unit 306, for selection and institute from the resource pool
State the transfer resource that other-end carries out D2D communications.
In the above-mentioned technical solutions, it is preferable that the transfer resource includes：Running time-frequency resource and transmission mode.
In the above-mentioned technical solutions, it is preferable that the dispensing unit 304 is additionally operable to：According to the current state of the terminal
The network condition that information and/or the terminal are presently in, sets the biography for being configured to carry out D2D communications to the other-end
The pattern of defeated resource.Specifically, three kinds of above-mentioned resources employment methods can be used alone, can also be according to the current shape of terminal
The network condition that state information and/or terminal are presently in neatly is switched over, combined.Wherein, the current state information of terminal
Including：The time of terminal wait resource distribution, battery capacity of terminal etc.；The network condition that terminal is presently in includes：D2D leads to
The channel quality of letter, disturb size etc..
The invention also provides a kind of terminal (not shown), including：The resource for being used for D2D communications as shown in Figure 3
Configuration device 300.
Below in conjunction with Fig. 4 A to Fig. 6 B technical solutions that the present invention will be described in detail.
The BROAD SUMMARY of the present invention is as follows：
Relaying UE (104 in such as Fig. 1) can bear the complexity of signaling Processing Algorithm, possess resource pool configuration and/or
Scheduling of resource ability, can be oneself and distal end UE (106 in such as Fig. 1) configuration resource pools, or be directly oneself and distal end
UE scheduling transmission resources.
Difference in view of the disposal ability for relaying UE, the present invention propose following several resources employment methods：
Mode A：Relaying UE uses pre-configured resource pool, and distal end UE is shared by way of broadcasting or forwarding, and provides
Source pond information should include running time-frequency resource, transmission mode etc..
Mode B：Relay UE and use the resource pool of oneself configuration, and distal end UE is shared by way of broadcasting or forwarding,
Resource pool information should include running time-frequency resource, transmission mode etc..
Mode C：It is directly oneself and distal end UE scheduling transmission resources to relay UE, according to the difference of scheduling time inter, is had
Dynamic dispatching and semi-persistent scheduling (Semi-Persistent Scheduling, SPS) two ways.
Wherein, can be in the new RRC connections of secondary link establishment, Huo Zhefu in order to support above-mentioned three kinds of resources employment methods
With existing physical channel, such as carry out the information that transfer resource configures using PSBCH.Meanwhile above-mentioned three kinds of resources employment methods need
Signaling Radio Bearer (SRB) is transmitted between UE and distal end UE is relayed.
Further, it is also possible to employing mode D：The resource distribution mode of mixing.Specifically, above-mentioned three kinds of resource distribution modes are all
There is its own applicable occasion, when channel condition changes or user demand change causes current way not apply to, can examine
Conversion is considered to other resource distribution modes.
Above-mentioned several resource distribution modes described in detail below：
Mode A：
Relaying UE use pre-configured resource pool, and distal end UE shares the resource pool, resource pool information should including running time-frequency resource,
Transmission mode etc., when needing to send data, relaying UE and distal end UE independently selects transfer resource from resource pool.
Wherein, the shared of pre-allocated recourses pond information can be by the way of as shown in Figure 4 A, i.e., by relaying UE broadcast
, can also be by the way of as shown in Figure 4 B to realize, i.e. distal end UE sends the request in shared resource pond, and relaying UE receives request
And forward resource pool information.
The technical solution of mode A needs the connection in secondary link establishment transfer resource distribution information, such as establishes new RRC
Connection, or the physical channel that multiplexing is current, such as PSBCH.
Such a method avoids resource pool configuration process, reduces the requirement to relaying UE resources allocation abilities.
Mode B：
In the technical solution of mode B, relaying UE needs to have certain signaling processing and resources allocation ability, Neng Gouwei
Oneself configuration resource pool, and shares distal end UE, and resource pool information should include running time-frequency resource, transmission mode etc., when needing to send
During data, relaying UE and distal end UE independently selects transfer resource from the resource pool.
Specifically, such as Fig. 5 A, when relaying UE generation cycles/triggering resource pool request, relaying UE can be according to the past
The statistical information of a period of time is (such as the CQI of relaying UE measurements or distal end UE feedbacks (Channel Quality Indicator, letter
The instruction of road quality), the information such as BSR (Buffer Status Reports, buffer state report)) for oneself configuration resource pool,
Backward distal end UE broadcast the resource pool information.
Can also as shown in Figure 5 B, relay UE configuration resource pool after, if receive distal end UE transmission resource allocation request,
UE is then relayed to receive to ask and forward resource pool information.
Similarly, the technical solution of mode B needs the connection in secondary link establishment transfer resource distribution information, such as establishes
New RRC connections, or the physical channel that multiplexing is current.
In the resources employment methods of mode B, relaying UE receives non-periodic signals triggering and specifically refers to, in relaying UE detections
Time delay to current D2D communications is larger and SINR (the Signal to Interference plus Noise that currently measure
Ratio, channel and interference plus noise ratio), (Reference Signal Receiving Quality, reference signal connect RSRQ
Receive quality) it is relatively low when, can trigger relaying UE reconfigure resource pool.
The advantages of technical solution of mode B is that resource distribution is flexible, can be measured according to recent longer period of time
The header lengths such as CQI, BSR can preferably running time-frequency resource and transmission mode, antijamming capability it is stronger.
Mode C：
In the technical solution of mode C, relaying UE possesses certain signaling processing ability and scheduling of resource ability, can produce
Oneself transmission scheduling of resource is born from, and the transmission scheduling of resource of distal end UE permits (Scheduling Grant) information.
Wherein it is preferred to as shown in Figure 6A, when relaying UE needs to carry out scheduling of resource, obtained letter is measured according to itself
The information such as road quality instruction and buffer state carrys out scheduling transmission resources, and sends data in this resource.
As shown in Figure 6B, when UE sides in distal end send resource scheduling request, relaying UE provide a small amount of tune for distal end UE first
Granted resources are spent, distal end UE reports the information such as BSR in this resource to relaying UE, and relaying UE produces distal end UE's according to this information
Scheduling is permitted and gives distal end UE by PSCCH transmissions, and then distal end UE sends data on granted resources.
In the technical solution of mode C, relaying UE can (Transmission Time Interval, pass in each TTI
Defeated time interval) dynamic dispatching that is all scheduled, the semi-persistent scheduling for being longer than a TTI period can also be used.This side
Case also needs the connection in secondary link establishment transfer resource distribution information, such as establishes new RRC connections, or multiplexing is current
Physical channel.
The technical solution of mode C can realize flexible resource distribution in different subframes, and antijamming capability is stronger.
Three of the above mode is contrasted, mode A can more quickly establish communication connection between UE, suitable for urgency communication field
Scape；The resources employment methods of mode B and mode C are flexible, possess stronger antijamming capability, are answered suitable for secondary link channel condition
It is miscellaneous, and relaying UE configurations are higher, possess the scene of certain signaling processing ability.
In addition, the invention also provides mode D：The resource allocation proposal of mixing, this scheme support multiple resources to match somebody with somebody at the same time
Scheme is put, other convertible schemes when Current protocols do not apply to, its optional resource allocation proposal includes but not limited to mode
A/B/C.For example, when the stand-by period is long or battery capacity is relatively low, mode A can be converted to by mode B/C；Work as channel condition
Complicated or interference it is larger (including different D2D it is right/group between interference, intra-cell interference, inter-cell interference) cause communication matter
When amount declines, mode B/C can be converted to by mode A.
Above-mentioned technical proposal makes it possible to support the D2D communication resource distributions under relay scene, and can be according to different
Scene changes the mode of resource distribution, has adapted to the particular/special requirement of D2D communications.
Technical scheme is described in detail above in association with attached drawing, and the present invention proposes a kind of new leads to for D2D
The resource allocation proposal of letter, the secondary link connection that D2D can be made full use of to communicate, realizes to the transfer resource of other-end
Flexible configuration, efficiently solves the resource allocation problem in D2D communications.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (19)
- A kind of 1. resource allocation method for D2D communications, suitable for terminal, it is characterised in that including：Determine the need for providing the D2D relay functions of communication for other-end；When determining to need to provide the relay function of D2D communications for the other-end, to the other-end be configured into The transfer resource of row D2D communications, so that the other-end carries out D2D communications by the transfer resource；The step of configuring the transfer resource to the other-end specifically includes：Obtain the resource pool of base station distribution；The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；OrWhen receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, So that the other-end selects the transfer resource from the resource pool.
- 2. the resource allocation method according to claim 1 for D2D communications, it is characterised in that to the other-end The step of configuring the transfer resource specifically includes：According to the historical channel quality indicated value and/or Buffer Status Report of record, autonomous configuration is used to carry out D2D communications Resource pool；The resource pool is broadcasted, so that the other-end selects the transfer resource from the resource pool；OrWhen receiving the resource allocation request that the other-end is sent, the resource pool is sent to the other-end, So that the other-end selects the transfer resource from the resource pool.
- 3. the resource allocation method according to claim 2 for D2D communications, it is characterised in that the historical channel matter Amount instruction value and/or the Buffer Status Report include：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports Road quality indicated value and/or Buffer Status Report.
- 4. the resource allocation method according to claim 2 for D2D communications, it is characterised in that further include：Detection carries out data transmission delay and signal transmission quality in D2D communication process with the other-end；If the data transmission delay in D2D communication process is carried out with the other-end is greater than or equal to default time delay value, and/or The signal transmission quality is less than or equal to preset quality value, then reconfigures the resource pool.
- 5. the resource allocation method according to claim 1 for D2D communications, it is characterised in that to the other-end The step of configuring the transfer resource specifically includes：Measure the current channel quality indicated value of the terminal and/or current buffer state；According to the current historical channel quality indicated value of the terminal and/or the current buffer state, the end is configured End is used for the transfer resource for carrying out D2D communications；When receiving the resource allocation request of other-end transmission, it is used to report other described ends to other-end distribution The present channel quality indicated value at end and/or the transfer resource of current buffer state report, so that the other-end is sent The present channel quality indicated value and/or current buffer state report of the other-end；The present channel quality indicated value and/or Current buffer zone state of the other-end sent according to the other-end Report, is configured to carry out the transfer resource of D2D communications to the other-end.
- 6. the resource allocation method according to claim 5 for D2D communications, it is characterised in that further include：In each Transmission Time Interval or often pass through scheduled duration, configure again the terminal be used for carry out D2D communications The transfer resource for being used to carry out D2D communications of transfer resource and the other-end, wherein, the scheduled duration is more than the biography Defeated time interval.
- 7. the resource allocation method according to any one of claim 1 to 4 for D2D communications, it is characterised in that also wrap Include：Selection carries out the transfer resource of D2D communications with the other-end from the resource pool.
- 8. the resource allocation method according to any one of claim 1 to 6 for D2D communications, it is characterised in that described Transfer resource includes：Running time-frequency resource and transmission mode.
- 9. the resource allocation method according to any one of claim 1 to 6 for D2D communications, it is characterised in that also wrap Include：The network condition being presently according to the current state information of the terminal and/or the terminal, set to it is described other Terminal is configured to carry out the pattern of the transfer resource of D2D communications.
- A kind of 10. device for allocating resources for D2D communications, suitable for terminal, it is characterised in that including：Determination unit, is used to determine whether to need to provide the D2D relay functions of communication for other-end；Dispensing unit, for when the determination unit determines to need to provide the relay function of D2D communications for the other-end, It is configured to carry out the transfer resource of D2D communications to the other-end, so that the other-end passes through the transfer resource Carry out D2D communications；The dispensing unit includes：Acquiring unit, for obtaining the resource pool of base station distribution；First radio unit, for broadcasting the resource pool, so that the other-end selects the biography from the resource pool Defeated resource；OrFirst interactive unit, for when receiving the resource allocation request that the other-end is sent, the resource pool to be sent out Send to the other-end, so that the other-end selects the transfer resource from the resource pool.
- 11. the device for allocating resources according to claim 10 for D2D communications, it is characterised in that the dispensing unit Including：First processing units, for the historical channel quality indicated value and/or Buffer Status Report according to record, autonomous configuration For carrying out the resource pool of D2D communications；Second radio unit, for broadcasting the resource pool, so that the other-end selects the biography from the resource pool Defeated resource；OrSecond interactive unit, for when receiving the resource allocation request that the other-end is sent, the resource pool to be sent out Send to the other-end, so that the other-end selects the transfer resource from the resource pool.
- 12. the device for allocating resources according to claim 11 for D2D communications, it is characterised in that the historical channel Quality indicated value and/or the Buffer Status Report include：The channel quality indicated value and/or Buffer Status Report of the terminal measurement, and the letter that the other-end reports Road quality indicated value and/or Buffer Status Report.
- 13. the device for allocating resources according to claim 11 for D2D communications, it is characterised in that the dispensing unit Further include：Detection unit, for detecting the data transmission delay and signal transmission that are carried out with the other-end in D2D communication process Quality；The first processing units are additionally operable to, and are detected in the detection unit and are carried out D2D communication process with the other-end In data transmission delay be greater than or equal to default time delay value, and/or the signal transmission quality is less than or equal to preset quality During value, the resource pool is reconfigured.
- 14. the device for allocating resources according to claim 10 for D2D communications, it is characterised in that the dispensing unit Including：Measuring unit, for measuring the current channel quality indicated value of the terminal and/or current buffer state；Second processing unit, for according to the current historical channel quality indicated value of the terminal and/or the current buffering Zone state, configures the transfer resource that the terminal is used to carry out D2D communications, and for receiving the resource of other-end transmission During configuring request, to other-end distribution for reporting the present channel quality indicated value of the other-end and/or working as The transfer resource of preceding Buffer Status Report, so that the other-end sends the present channel quality instruction of the other-end Value and/or current buffer state report, andThe present channel quality for the other-end that the second processing unit is additionally operable to be sent according to the other-end refers to Indicating value and/or current buffer state report, are configured to carry out the transfer resource of D2D communications to the other-end.
- 15. the device for allocating resources according to claim 14 for D2D communications, it is characterised in that the second processing Unit is additionally operable to：In each Transmission Time Interval or often pass through scheduled duration, configure again the terminal be used for carry out D2D communications The transfer resource for being used to carry out D2D communications of transfer resource and the other-end, wherein, the scheduled duration is more than the biography Defeated time interval.
- 16. the device for allocating resources for being used for D2D communications according to any one of claim 10 to 13, it is characterised in that Further include：Selecting unit, the transfer resource for selection and other-end progress D2D communications from the resource pool.
- 17. the device for allocating resources for being used for D2D communications according to any one of claim 10 to 15, it is characterised in that The transfer resource includes：Running time-frequency resource and transmission mode.
- 18. the device for allocating resources for being used for D2D communications according to any one of claim 10 to 15, it is characterised in that The dispensing unit is additionally operable to：The network condition being presently according to the current state information of the terminal and/or the terminal, set to it is described other Terminal is configured to carry out the pattern of the transfer resource of D2D communications.
- A kind of 19. terminal, it is characterised in that including：The money for being used for D2D communications as any one of claim 10 to 18 Source configuration device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166178.8A CN104703224B (en) | 2015-04-09 | 2015-04-09 | Resource allocation method, device and terminal for D2D communications |
| PCT/CN2015/082985 WO2016161709A1 (en) | 2015-04-09 | 2015-06-30 | Resource configuration method and apparatus for d2d communication, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166178.8A CN104703224B (en) | 2015-04-09 | 2015-04-09 | Resource allocation method, device and terminal for D2D communications |
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| Publication Number | Publication Date |
|---|---|
| CN104703224A CN104703224A (en) | 2015-06-10 |
| CN104703224B true CN104703224B (en) | 2018-05-15 |
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| CN201510166178.8A Active CN104703224B (en) | 2015-04-09 | 2015-04-09 | Resource allocation method, device and terminal for D2D communications |
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| Country | Link |
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| CN (1) | CN104703224B (en) |
| WO (1) | WO2016161709A1 (en) |
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