CN105282793A - Method and device for negotiating UE (User Equipment) discovery resources between adjacent base stations in D2D (Device to Device) - Google Patents
Method and device for negotiating UE (User Equipment) discovery resources between adjacent base stations in D2D (Device to Device) Download PDFInfo
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- CN105282793A CN105282793A CN201410232732.3A CN201410232732A CN105282793A CN 105282793 A CN105282793 A CN 105282793A CN 201410232732 A CN201410232732 A CN 201410232732A CN 105282793 A CN105282793 A CN 105282793A
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Abstract
The invention discloses a method for negotiating UE (User Equipment) discovery resources between adjacent base stations in D2D (Device to Device). The method comprises the steps that a second base station performs UE discovery resource negotiation with an adjacent first base station, and a distributed D2D discovery resource pool of the second base station is adjusted so as to enable a distributed D2D discovery resource pool of the first base station to be not overlapped with the distributed D2D discovery resource pool of the second base station. The invention further discloses a device for negotiating the UE discovery resources between adjacent base stations in D2D. By adopting the method and the device disclosed by the invention, UE in cells under adjacent base stations can be ensured not to send discovery messages on the same resource block as far as possible.
Description
Technical field
The present invention relates to the communication technology, particularly consult method and the device that UE (UserEquipment, subscriber equipment) finds resource between adjacent base station in a kind of D2D (DevicetoDevice, device-to-device).
Background technology
Along with the development of the communication technology, between increasing subscriber equipment, need in-plant transfer of data, such as carry out data share, mutual blit sheet, etc. be all typical short-range communication.D2D based on LTE (LongTermEvolution-Advanced, Long Term Evolution) allows equipment to carry out direct communication when not having network infrastructure.In in-plant neighbor cell, the D2D device discovery mechanism of the UE between community, not yet discusses and defines in third generation partner program (3GPP) standard.
Summary of the invention
In view of this, the invention provides in a kind of D2D and consult UE between adjacent base station and find the method for resource and device, the UE that can as far as possible guarantee under adjacent base station in community does not send and finds message on same Resource Block.
For achieving the above object, technical scheme of the present invention is specifically achieved in that
The invention discloses in a kind of device-to-device D2D and consult the method that UE finds resource between adjacent base station, the method comprises:
Steps A, the second base station receive the first base station institute that carries that the first base station sends and distribute the D2D D2D discovery resource pool request message finding resource pool;
Step B, the second base station judge that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Step C, the second base station, according to own load situation, adjust the second D2D that base station is distributed and find resource pool, find with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Step D, the second base station judge the first base station distribute D2D find resource pool and adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then
Step e, the second base station are replied to the first base station and are carried and do not accept mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and repeat steps A to E.
Wherein, described step B, the second base station judge that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if not, then,
Perform step C1, the second base station to reply to the first base station and carry acceptance mark, and include the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
Wherein, described step D, the second base station judge the first base station distribute D2D find resource pool and adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if not, then,
Perform step e 1, second base station to reply to the first base station and carry acceptance mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
Preferably, when replying D2D discovery resource pool response message to the first base station in step e second base station, the method comprises further:
The second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
Preferably, when the second base station the N time to reply to the first base station carry the D2D not accepting to identify find resource pool response message time, N be more than or equal to 1 positive integer, then,
Second base station receives the first base station finally the determined institute that carries that the first base station sends and distributes the D2D D2D discovery resource pool notice message finding resource pool;
Second base station judges that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
The invention also discloses in a kind of device-to-device D2D and consult the device that UE finds resource between adjacent base station, be applied to the second base station, this device comprises:
Receiving element, the first base station institute that carries sent for receiving the first base station distributes the D2D D2D discovery resource pool request message finding resource pool;
Judging unit, for judging that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Adjustment unit, for according to own load situation, adjusts the second D2D that base station is distributed and finds resource pool, finds with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Described judging unit, also for judge the first base station distribute D2D find resource pool with adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then
Reply unit, carry do not accept mark for replying to the first base station, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool.
Wherein, described judging unit, judges that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if not, then,
Described reply unit, also carries acceptance mark for replying to the first base station, and includes the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool.
Wherein, described judging unit, judge the first base station distribute D2D find resource pool with adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if not, then,
Described reply unit, also carries acceptance mark for replying to the first base station, and includes the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
Preferably, this device comprises further:
Process notification unit, for the second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
Preferably, when the second base station the N time to reply to the first base station carry the D2D not accepting to identify find resource pool response message time, N be more than or equal to 1 positive integer, then,
Described receiving element, the first base station finally the determined institute that carries also sent for receiving the first base station distributes the D2D D2D discovery resource pool notice message finding resource pool;
Described judging unit, also for judging that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
This device comprises further: process notification unit, for the second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
As seen from the above technical solutions, the present invention carries out UE by the second base station and the first adjacent base station and finds resource negotiation, adjust and self distribute D2D discovery resource pool, find to make the first D2D that base station is distributed with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping.Like this, the UE under the UE under the second base station in community and the first base station in community sends D2D respectively and finds message in nonoverlapping resource, ensure that UE can receive D2D and find message on different resource block.
Accompanying drawing explanation
The schematic flow sheet that UE finds the method for resource is consulted between adjacent base station in a kind of D2D that Fig. 1 provides for one embodiment of the invention.
Fig. 2 coordinates the schematic diagram that D2D finds resource between adjacent base station of the present invention.
Fig. 3 is the application networking scene schematic diagram of one embodiment of the invention.
Fig. 4 consults the structural representation that UE finds the device of resource between a kind of adjacent base station of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.
As shown in Figure 1, one embodiment of the invention provides in a kind of D2D consults the method that UE finds resource between adjacent base station, the method comprises the following steps:
Steps A, the second base station receive the first base station institute that carries that the first base station sends and distribute the D2D D2D discovery resource pool request message finding resource pool;
Step B, the second base station judge that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then perform step C; If not, then perform step C1, the second base station is replied to the first base station and is carried acceptance mark, and includes the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends;
Step C, the second base station, according to own load situation, adjust the second D2D that base station is distributed and find resource pool, find with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Step D, the second base station judge the first base station distribute D2D find resource pool and adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then perform step e; If not, then perform step e 1, second base station and reply to the first base station and carry acceptance mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends;
Step e, the second base station are replied to the first base station and are carried and do not accept mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and repeat steps A to E.
When replying D2D discovery resource pool response message to the first base station in step e second base station, the method comprises further:
The second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
Said method finds to consult to carry out in resource pool request message and response message at each D2D, in actual applications, sometimes still cannot accept to find Resourse Distribute through N negotiation, so, first base station defines maximum number of retransmissions N, N be more than or equal to 1 positive integer;
When the second base station carries to the first base station reply the D2D discovery resource pool response message not accepting to identify the N time, then,
Second base station receives the first base station finally the determined institute that carries that the first base station sends and distributes the D2D D2D discovery resource pool notice message finding resource pool;
Second base station judges that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
To sum up, coordinate D2D between adjacent base station and find the schematic diagram of resource as shown in Figure 2.D2D finds that resource pool request (D2Ddiscoveryresourcepoolrequest) message is initiated by the first base station (eNB1), D2D finds that resource pool response (D2Ddiscoveryresourcepoolresponse) message is responded by the second base station (eNB2), if complete negotiation within N time, then process ends; If N secondary response also has conflict, then send last D2D by eNB1 to eNB2 and find that resource pool notices (D2Ddiscoveryresourcepoolinform) message, then process ends.
It should be noted that, the first base station is identical with the second base station functions, is role's difference in the present invention.Just initiate D2D with the first base station in the embodiment of the present invention and find resource pool request message, and in the first base station parameter preset N, when the first base station receive that the second base station replys for the N time carry the D2D not accepting to identify find resource pool response message time, send D2D to the second base station and find resource pool notice message.
The process of UE discovery Resourse Distribute between adjacent base station in D2D is further illustrated below by another embodiment of the present invention.
As shown in Figure 3, it is the application networking scene schematic diagram of one embodiment of the invention.In Fig. 3, the first base station (eNB1) is adjacent with the second base station (eNB2), and UE1 belongs to the community under the first base station, and UE2 belongs to the community under the second base station.
First, eNB1 and eNB2 distributes D2D discovery resource pool required separately respectively by webmaster (O & M);
In actual applications, webmaster can control the discovery Resourse Distribute of multiple adjacent eNB, only introduces the discovery resource allocation conditions of network management control adjacent base station eNB1 and eNB2 for clearly demonstrating the present invention, here.Webmaster can according to position, base station, and cellular network User, the factors such as the quantity of D2D user, carries out discovery Resourse Distribute to respectively eNB1 and eNB2.In the embodiment of the present invention, to the D2D that eNB1 distributes, webmaster finds that resource pool comprises: PRB1, PRB2, PRB3, PRB4 and PRB5; The D2D distributed to eNB2 finds that resource pool comprises: PRB4, PRB5, PRB6, PRB7 and PRB8.In the embodiment of the present invention, webmaster distribute for find the resource of signalling based on non-UE be correlated with, namely webmaster is distributed to the discovery resource pool of certain base station, all UE in this community, place, base station can share the resource found for D2D user in this resource pool.
ENB1 gets after distributed D2D finds resource pool, notifies the UE in community under this base station, PRB1, PRB2, PRB3, PRB4 and PRB5 selects Resource Block send D2D and find message; Meanwhile, eNB2 gets after distributed D2D finds resource pool, notifies the UE in community under this base station, PRB4, PRB5, PRB6, PRB7 and PRB8 selects Resource Block send D2D and find message.
Because according to general status, webmaster just will find that Resourse Distribute is to each base station, specifically also need the coordination carrying out between eNB finding resource, and finally guarantee that the UE of two adjacent base stations does not send on same Resource Block and find message.
To introduce between eNB1 and eNB2 through consultation below in detail, carry out UE between adjacent base station and find the method for Resourse Distribute.
Step 301, eNB1 send D2D to eNB2 and find resource pool request (D2Ddiscoveryresourcepoolrequest) message, and this request comprises D2D that eNB1 distributes and finds resource pool, PRB1, PRB2, PRB3, PRB4 and PRB5;
After step 302, eNB2 receive the request message of eNB1 transmission, resource pool PRB4, PRB5, PRB6, PRB7 and PRB8 is found according to self distributing D2D, and D2D that eNB1 distributes finds resource pool PRB1, PRB2, PRB3, PRB4 and PRB5, judge that whether two resource pools are overlapping, owing to there being overlapping Resource Block PRB4 and PRB5, so the D2D of amendment eNB2 self finds resource pool.Here, eNB2 is according to own load situation, and the adjacent base station size in institute's Resources allocation pond and position separately, determines whether amendment, or the degree of amendment.The present invention seeks to, guarantee that the UE of adjacent base station does not send on same Resource Block as far as possible and find message, so during amendment, guarantee two resource pools are not overlapping as far as possible yet.Suppose eNB2 in the embodiment of the present invention by self institute's Resources allocation pond by PRB4, PRB5, PRB6, PRB7 and PRB8, be adjusted to PRB5, PRB6, PRB7 and PRB8.
Then, eNB2 finds resource pool PRB5, PRB6, PRB7 and PRB8 according to self distributing D2D, and D2D that eNB1 distributes finds resource pool PRB1, PRB2, PRB3, PRB4 and PRB5, judge two resource pools still overlapped resource block PRB5, then reply D2D to eNB1 and find resource pool response (D2Ddiscoveryresourcepoolresponse) message, carry in this response message and do not accept mark, and comprise the institute's Resources allocation of the eNB2 after adjustment pond PRB5, PRB6, PRB7 and PRB8.
Meanwhile, owing to consulting rear discovery eNB2 institute's Resources allocation pond PRB5, PRB6, PRB7 and PRB8, there is overlapped resource block PRB5 with eNB1 institute's Resources allocation pond PRB1, PRB2, PRB3, PRB4 and PRB5, then,
ENB2 will with eNB1 institute's Resources allocation pond not lap PRB6, PRB7 and PRB8 find resource pool as primary D2D, find that resource pool informs to the UE under this base station in community using with eNB1 institute's Resources allocation pond lap PRB5 as secondary D2D.After UE under eNB2 in community is notified, resource pool sends discovery message will first to select primary D2D to find, if there is conflict, then finds that resource pool is selected Resource Block to send and found message from secondary D2D.
Step 303, eNB1 receive the D2Ddiscoveryresourcepoolresponse that eNB2 replys, as long as containing not accepting mark in this response, then can start the negotiation of next round, carry self institute's Resources allocation pond, again send D2Ddiscoveryresourcepoolrequest message to eNB2.
Here, eNB1 also can according to circumstances modify to the resource pool of self before again sending D2Ddiscoveryresourcepoolrequest message to eNB2, to avoid overlap, can certainly select not revise.
Suppose the first situation, D2D that eNB1 distributes finds that resource pool is revised as PRB1, PRB2, PRB3, PRB4 by PRB1, PRB2, PRB3, PRB4 and PRB5; In D2Ddiscoveryresourcepoolrequest message, then carry amended self institute's Resources allocation pond PRB1, PRB2, PRB3, PRB4, send to eNB2.
Meanwhile, eNB1 notifies the UE under this base station in community, PRB1, PRB2, PRB3, PRB4 selects Resource Block send and finds message.
After eNB2 receives the request message of eNB1 transmission, resource pool PRB5, PRB6, PRB7 and PRB8 is found according to self distributing D2D, and D2D that eNB1 distributes finds resource pool PRB1, PRB2, PRB3, PRB4, judge that whether two resource pools are overlapping, because two resource pools do not have overlap completely, then think that can accept D2D that eNB1 distributes finds resource pool, also do not need to find that resource pool adjusts to D2D that eNB2 distributes, then
ENB2 replys D2Ddiscoveryresourcepoolresponse message to eNB1, carries acceptance mark, and comprise eNB2 institute's Resources allocation pond PRB5, PRB6, PRB7 and PRB8 in this response message.
Meanwhile, eNB2 notifies the UE under this base station in community, PRB5, PRB6, PRB7, PRB8 selects Resource Block send and finds message.
At this moment, after eNB1 receives the reply having and accept mark, then process ends.Now, the Resourse Distribute of the UE that eNB1 informs under this base station in community does not need to change, and remains on PRB1, PRB2, PRB3, PRB4, to select Resource Block to send find message.
In step 303, suppose the second situation, D2D that eNB1 distributes finds that resource pool is not modified, and is still PRB1, PRB2, PRB3, PRB4 and PRB5; In D2Ddiscoveryresourcepoolrequest message, then carry self institute's Resources allocation pond PRB1, PRB2, PRB3, PRB4 and PRB5, send to eNB2.
Simultaneously, eNB1 will with eNB2 institute's Resources allocation pond not lap PRB1, PRB2, PRB3, PRB4 find resource pool as primary D2D, find that resource pool informs to the UE under this base station in community using with eNB2 institute's Resources allocation pond lap PRB5 as secondary D2D, after UE under eNB1 in community is notified, resource pool sends discovery message will first to select primary D2D to find, if there is conflict, then find that resource pool is selected Resource Block to send and found message from secondary D2D.
After eNB2 receives the request message of eNB1 transmission, resource pool PRB5, PRB6, PRB7 and PRB8 is found according to self distributing D2D, and D2D that eNB1 distributes finds resource pool PRB1, PRB2, PRB3, PRB4 and PRB5, judge that whether two resource pools are overlapping, owing to there being overlapping Resource Block PRB5, so the D2D of amendment eNB2 self finds resource pool.Here, eNB2 is according to own load situation, and the adjacent base station size in institute's Resources allocation pond and position separately, determines whether amendment, or the degree of amendment.The present invention seeks to, guarantee that the UE of adjacent base station does not send on same Resource Block as far as possible and find message, so during amendment, guarantee two resource pools are not overlapping as far as possible yet.Suppose eNB2 in the embodiment of the present invention by the resource pool that self distributes by PRB5, PRB6, PRB7 and PRB8, be adjusted to PRB6, PRB7 and PRB8.
Then, eNB2 finds resource pool PRB6, PRB7 and PRB8 according to self distributing D2D, and D2D that eNB1 distributes finds resource pool PRB1, PRB2, PRB3, PRB4 and PRB5, judge that two resource pools are no longer overlapping, then think that can accept D2D that eNB1 distributes finds resource pool, reply D2Ddiscoveryresourcepoolresponse message to eNB1, carry acceptance mark in this response message, and comprise the institute's Resources allocation of the eNB2 after adjustment pond PRB6, PRB7 and PRB8.
Meanwhile, eNB2 notifies the UE under this base station in community, PRB6, PRB7, PRB8 selects Resource Block send and finds message.
At this moment, after eNB1 receives the reply having and accept mark, then process ends.
In actual applications, negotiation can not ceaselessly be gone down, general meeting defines maximum number of retransmissions N on the base station of initiating request, when eNB1 receive for the N time eNB2 reply carry do not accept identify D2Ddiscoveryresourcepoolresponse message time, eNB1 can send to eNB2 for the last time and carry the eNB1 finally determined institute and distribute the D2D that D2D finds resource pool and find resource pool notice (D2Ddiscoveryresourcepoolinform) message, and so far flow process terminates.
Suppose, when eNB1 receives response message the N time, distribute D2D and find resource pool PRB1, PRB2, PRB3, PRB4 and PRB5, it is PRB5, PRB6, PRB7 and PRB8 that eNB1 finds out D2D that eNB2 distributes discovery resource pool from response message;
ENB1, can according to circumstances modify to the resource pool of self when sending notice message to eNB2, can certainly select not revise, and distributes D2D discovery resource pool as the institute finally determined.
The first situation, D2D that eNB1 distributes finds that resource pool is revised as PRB1, PRB2, PRB3, PRB4 by PRB1, PRB2, PRB3, PRB4 and PRB5; In D2Ddiscoveryresourcepoolinform message, then carry amended self institute's Resources allocation pond PRB1, PRB2, PRB3, PRB4, send to eNB2 as the resource pool finally determined.
Meanwhile, eNB1 notifies the UE under this base station in community, PRB1, PRB2, PRB3, PRB4 selects Resource Block send and finds message.
ENB2 finds that institute's Resources allocation pond, two base stations does not have overlap, then notifies the UE in community under this base station, PRB5, PRB6, PRB7, PRB8 select Resource Block send discovery message after receiving the notice message that eNB1 sends.
The second situation, D2D that eNB1 distributes finds that resource pool is not modified, and is still PRB1, PRB2, PRB3, PRB4 and PRB5; In D2Ddiscoveryresourcepoolinform message, then carry self institute's Resources allocation pond PRB1, PRB2, PRB3, PRB4 and PRB5, send to eNB2 as the resource pool finally determined.
Simultaneously, eNB1 will with eNB2 institute's Resources allocation pond not lap PRB1, PRB2, PRB3, PRB4 find resource pool as primary D2D, find that resource pool informs to the UE under this base station in community using with eNB2 institute's Resources allocation pond lap PRB5 as secondary D2D, after UE under eNB1 in community is notified, resource pool sends discovery message will first to select primary D2D to find, if there is conflict, then find that resource pool is selected Resource Block to send and found message from secondary D2D.
After eNB2 receives the notice message of eNB1 transmission, then will with eNB1 institute's Resources allocation pond not lap PRB6, PRB7, PRB8 find resource pool as primary D2D, find that resource pool informs to the UE under this base station in community using with eNB1 institute's Resources allocation pond lap PRB5 as secondary D2D, after UE under eNB2 in community is notified, resource pool sends discovery message will first to select primary D2D to find, if there is conflict, then find that resource pool is selected Resource Block to send and found message from secondary D2D.
In sum, carry out UE between embodiment of the present invention base station and find resource negotiation, avoid overlap as far as possible, resource pool will be found as primary D2D with the nonoverlapping resource in other base stations, the resource overlapping with other base stations is found resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE, the UE as far as possible guaranteeing under adjacent base station in community does not send and finds message on same Resource Block.
Based on same inventive concept, the present invention also proposes to consult the device that UE finds resource in a kind of D2D between adjacent base station, and be applied to the second base station, see Fig. 4, this device comprises:
Receiving element 401, the first base station institute that carries sent for receiving the first base station distributes the D2D D2D discovery resource pool request message finding resource pool;
Judging unit 402, for judging that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Adjustment unit 403, for according to own load situation, adjusts the second D2D that base station is distributed and finds resource pool, finds with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Described judging unit 402, also for judge the first base station distribute D2D find resource pool with adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then
Reply unit 404, carry do not accept mark for replying to the first base station, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool.
Wherein, described judging unit 402, judges that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if not, then,
Described reply unit 404, also carries acceptance mark for replying to the first base station, and includes the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool.
Wherein, described judging unit 402, judge the first base station distribute D2D find resource pool with adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if not, then,
Described reply unit 404, also carries acceptance mark for replying to the first base station, and includes the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
Preferably, this device comprises further:
Process notification unit 405, for the second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
Preferably, when the second base station the N time to reply to the first base station carry the D2D not accepting to identify find resource pool response message time, N be more than or equal to 1 positive integer, then,
Described receiving element 401, the first base station finally the determined institute that carries also sent for receiving the first base station distributes the D2D D2D discovery resource pool notice message finding resource pool;
Described judging unit 402, also for judging that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
This device comprises further: process notification unit 405, for the second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. consult the method that UE finds resource in device-to-device D2D between adjacent base station, the method comprises:
Steps A, the second base station receive the first base station institute that carries that the first base station sends and distribute the D2D D2D discovery resource pool request message finding resource pool;
Step B, the second base station judge that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Step C, the second base station, according to own load situation, adjust the second D2D that base station is distributed and find resource pool, find with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Step D, the second base station judge the first base station distribute D2D find resource pool and adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then
Step e, the second base station are replied to the first base station and are carried and do not accept mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and repeat steps A to E.
2. the method for claim 1, is characterized in that, described step B, the second base station judge that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if not, then,
Perform step C1, the second base station to reply to the first base station and carry acceptance mark, and include the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
3. the method for claim 1, is characterized in that, described step D, the second base station judge the first base station distribute D2D find resource pool and adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if not, then,
Perform step e 1, second base station to reply to the first base station and carry acceptance mark, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
4. the method for claim 1, is characterized in that, when replying D2D discovery resource pool response message to the first base station in step e second base station, the method comprises further:
The second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
5. the method for claim 1, is characterized in that, when the second base station the N time to reply to the first base station carry the D2D not accepting to identify find resource pool response message time, N be more than or equal to 1 positive integer, then,
Second base station receives the first base station finally the determined institute that carries that the first base station sends and distributes the D2D D2D discovery resource pool notice message finding resource pool;
Second base station judges that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
6. consult the device that UE finds resource in device-to-device D2D between adjacent base station, be applied to the second base station, this device comprises:
Receiving element, the first base station institute that carries sent for receiving the first base station distributes the D2D D2D discovery resource pool request message finding resource pool;
Judging unit, for judging that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
Adjustment unit, for according to own load situation, adjusts the second D2D that base station is distributed and finds resource pool, finds with the second D2D that base station is distributed, resource pool finds that resource pool is not overlapping to make the first D2D that base station is distributed;
Described judging unit, also for judge the first base station distribute D2D find resource pool with adjust after the second D2D that base station is distributed find that whether resource pool still overlapping, if so, then
Reply unit, carry do not accept mark for replying to the first base station, and include the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool.
7. device as claimed in claim 6, is characterized in that, described judging unit, judges that the first D2D that base station is distributed finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if not, then,
Described reply unit, also carries acceptance mark for replying to the first base station, and includes the second base station institute and distribute the D2D D2D discovery resource pool response message finding resource pool.
8. device as claimed in claim 6, is characterized in that, described judging unit, judges that the first base station institute distributes D2D and finds that resource pool and the second D2D that base station is distributed after adjusting find that whether resource pool is still overlapping, if not, then,
Described reply unit, also carries acceptance mark for replying to the first base station, and includes the institute of the second base station after adjustment and distribute the D2D D2D discovery resource pool response message finding resource pool, and process ends.
9. device as claimed in claim 6, it is characterized in that, this device comprises further:
Process notification unit, for the second D2D that base station is distributed after adjustment is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE.
10. device as claimed in claim 6, is characterized in that, when the second base station the N time to reply to the first base station carry the D2D discovery resource pool response message not accepting to identify time, N be more than or equal to 1 positive integer, then,
Described receiving element, the first base station finally the determined institute that carries also sent for receiving the first base station distributes the D2D D2D discovery resource pool notice message finding resource pool;
Described judging unit, also for judging that the first D2D that base station is distributed finally determined finds with the second D2D that base station is distributed, resource pool finds that whether resource pool is overlapping, if so, then,
This device comprises further: process notification unit, for the second D2D that base station is distributed is found in resource pool, find that the nonoverlapping resource of resource pool finds resource pool as primary D2D with the first D2D that base station is distributed, using with the first base station distribute D2D and find that the overlapping resource of resource pool finds resource pool as secondary D2D, inform the UE in community under this base station, preferentially find that resource pool being selected Resource Block send D2D finds message at primary D2D for this UE; Otherwise, notify at the second D2D that base station is distributed, this UE finds that resource pool being selected Resource Block send D2D finds message.
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