CN105553612B

CN105553612B - A kind of transmission method of D2D communication link and base station and terminal

Info

Publication number: CN105553612B
Application number: CN201510915743.6A
Authority: CN
Inventors: 魏冬冬; 张弛; 周国华; 王轶
Original assignee: Shanghai Huawei Technologies Co Ltd
Current assignee: Shanghai Huawei Technologies Co Ltd
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2019-10-25
Anticipated expiration: 2035-12-10
Also published as: CN105553612A

Abstract

The invention discloses a kind of transmission method of D2D communication link and base station and terminals can promote link transmission reliability for introducing HARQ treatment mechanism in the transmission of data packets of D2D communication link.The embodiment of the present invention provides a kind of transmission method of D2D communication link, it include: base station is that the first terminal for being linked into the base station and second terminal are configured to the hybrid automatic repeat-request HARQ feedback resource pool of D2D communication link, establishing between the first terminal and the second terminal has the D2D communication link；The HARQ feedback resource pool is broadcasted to the first terminal and the second terminal in the base station.

Description

A kind of transmission method of D2D communication link and base station and terminal

Technical field

The present invention relates to field of communication technology more particularly to a kind of equipment room (full name in English: Device-to-Device, English abbreviation: D2D) communication link transmission method and base station and terminal.

Background technique

D2D communication refer to realize short distance user equipment between not by the technology of third party's direct communication.With intelligent end End is popularized, and the quantity of intelligent terminal is in explosive build phase in network, and industry starts to pay close attention to D2D technology at this time Development, the reason is that the D2D technology under cellular architecture can not only help operator to share heavy network load, unloaded cell Business, the existing cellular network architecture of supplement simultaneously bring new lucrative income mode, and natural excellent based on short-range communication Gesture, D2D technology can also promote spectrum efficiency, obtain higher throughput performance and lower propagation delay time.

The number of devices of the following wearable device (full name in English: Wearable Device, English abbreviation: WD) can increase severely, And other than completing some basic operations, step counting, health detection etc., it is desirable that completing one by wearable device A little basic communication services, such as short message, voice business.It is expected that following wearable device is not limited to terminal simultaneously, with The non-absolute binding relationship of user's own terminal, being expected that by wearable device may be implemented to communicate whenever and wherever possible, even if user is certainly Body terminal is not at one's side.

But one of the characteristics of wearable device is exactly that its battery capacity is smaller, and user it is expected making for wearable device It is much larger than handheld terminal again with duration and uses duration.Therefore, in order to extend wearable device use the time, need as far as possible Reduce the scene that the energy consumption of wearable device, especially wearable device are communicated.A kind of feasible program is: wearable device When carrying out transmitting uplink data, do not need to be directly transmitted to remote base station, but by close with one or more The trunking (full name in English: Relay Device, English abbreviation: RD) of distance forms cooperative groups, is forwarded by trunking Data are to base station, and due to being communicated using short-range D2D, this can greatly reduce the energy consumption of wearable device.Certainly, have low The possibility of power consumption requirements is not limited to wearable device, it is also possible to the limited mobile phone terminal equipment of electricity, machine type communication (English Full name: Machine Type Communication, English abbreviation: MTC) terminal etc..

In the prior art, above-mentioned D2D communication link uses the port PC5, only supports broadcast transmission, i.e. UE can be with The broadcast transmission carried out with multiple UE.When carrying out D2D communication using D2D communication link between UE and UE, information not can guarantee Correct transmission, and existing D2D communication link can not solve to be corrected in information transmission errors, because each UE makees It is transmitting terminal all by the way of broadcast transmission, UE is not aware that the transmission result of data.

Summary of the invention

The embodiment of the invention provides a kind of transmission method of D2D communication link and base station and terminals, for logical in D2D Believe and introduce HARQ treatment mechanism in the transmission of data packets of link, link transmission reliability can be promoted.

In order to solve the above technical problems, the embodiment of the present invention the following technical schemes are provided:

In a first aspect, the embodiment of the present invention provides a kind of transmission method of D2D communication link, comprising:

Base station be linked into the base station first terminal and the second terminal mixing that is configured to D2D communication link it is automatic Retransmission request HARQ feedback resource pool, establishing between the first terminal and the second terminal has the D2D communication link；

The HARQ feedback resource pool is broadcasted to the first terminal and the second terminal in the base station.

The HARQ feedback resource pool of base station broadcast can be used for passing in the data packet of D2D communication link in the embodiment of the present invention During defeated, so that first terminal and second terminal can be realized during D2D communication link data packet and be based on The treatment mechanism of HARQ, therefore link transmission reliability can be promoted.

With reference to first aspect, in the first possible implementation of the first aspect, the HARQ feedback resource pool is used In determining the HARQ feedback resource for being used for D2D communication link, the HARQ feedback resource includes: for D2D communication link The resource block RB resource of HARQ feedback, the RB resource are specially to originate RB, terminate RB and the RB total number for HARQ feedback.

The HARQ feedback resource pool of base station broadcast is determined for HARQ feedback resource in the embodiment of the present invention, the HARQ Feedback resources include the RB resource for the HARQ feedback of D2D communication link, so that first terminal and second terminal determination can The reception and transmission of HARQ feedback result are carried out with the RB resource used.

The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect In, described for the HARQ feedback resource of D2D communication link and the data transmission resources for D2D communication link is frequency division multiplexing 's.

In the embodiment of the present invention, the HARQ feedback resource and data that the HARQ feedback resource pool of base station configuration is determined are transmitted Resource carries out frequency division multiplexing, and HARQ feedback result had both been determined sends and receives used resource, in turn avoids and data Transfer resource conflict, it is very high to the utilization efficiency of resource.

With reference to first aspect or first aspect the first may or second of possible implementation, in first aspect In second of possible implementation, the method also includes:

When the first terminal and the second terminal belong to the same cooperative groups, the base station is the first terminal It is right in the cooperative groups with the described corresponding group of mark of cooperative groups of second terminal distribution, and the distribution first terminal The first terminal mark answered and the second terminal corresponding second terminal mark in the cooperative groups；

The base station to the first terminal and the second terminal broadcast described group of mark, first terminal mark, The second terminal mark.

In the embodiment of the present invention, base station broadcasts group mark and a terminal iidentification to first terminal and second terminal, so that the One terminal and second terminal can be using dual identifications come computed HARQ index, when avoiding same trunk subscriber and belonging to different groups HARQ feedback resource conflict, it can be achieved that different user in same group, same user's difference group, different user difference group The differentiation of HARQ feedback resource.

Second aspect, the embodiment of the present invention also provide a kind of transmission method of D2D communication link, comprising:

The hybrid automatic repeat-request HARQ feedback resource for D2D communication link of first terminal reception base station broadcast Pond, establishing between the first terminal and second terminal has the D2D communication link；

The first terminal receives the HARQ that the second terminal is sent according to the HARQ feedback resource pool received Feedback result.

In conjunction with second aspect, in the first possible implementation of the second aspect, the method also includes:

It is corresponding group of mark of cooperative groups where the first terminal receives the first terminal of the base station broadcast, described First terminal in the cooperative groups corresponding first terminal mark and the second terminal corresponding the in the cooperative groups Two terminal iidentifications.

In the embodiment of the present invention, base station broadcasts group mark and a terminal iidentification to first terminal and second terminal, and first eventually The group mark and terminal iidentification, first terminal that end can get oneself according to the broadcast of base station can identify second terminal institute Cooperative groups and the second terminal terminal iidentification.

In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect In, the first terminal receives the HARQ feedback knot that the second terminal is sent according to the HARQ feedback resource pool received Fruit, comprising:

The first terminal determines what the second terminal used according to HARQ index and the HARQ feedback resource pool HARQ feedback resource, the HARQ index include: corresponding group of mark of cooperative groups where the first terminal and second end End corresponding second terminal mark in the cooperative groups；

The first terminal receives what the second terminal was sent in the HARQ feedback resource that the second terminal uses HARQ feedback result.

Further, first terminal gets dual identification from the broadcast message of base station, and first terminal can use dual Mark carrys out computed HARQ index, avoid the conflict of HARQ feedback resource when same trunk subscriber belongs to different groups, it can be achieved that The differentiation of different user, same user's difference group, the HARQ feedback resource of different user difference group in same group.

In conjunction with second of possible implementation of second aspect, in the third possible implementation of second aspect In, the first terminal determines the HARQ feedback that the second terminal uses according to HARQ index and the HARQ feedback resource pool Resource, comprising:

The first terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The resource block RB resource of the HARQ feedback of D2D communication link, and the cyclic shift money of the HARQ feedback for D2D communication link Source；Or,

The first terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The RB resource of the HARQ feedback of D2D communication link, and the superposition orthogonal code OCC sequence of the HARQ feedback for D2D communication link Resource；Or,

The first terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The RB resource of the HARQ feedback of D2D communication link, the cyclic shift resource of the HARQ feedback for D2D communication link, and be used for The OCC sequence resources of the HARQ feedback of D2D communication link；

Wherein, the RB resource is specially to originate RB, terminate RB and the RB total number for HARQ feedback.

First terminal can be used for by the HARQ feedback resource pool and HARQ index of base station broadcast in the embodiment of the present invention Determine HARQ feedback resource, the HARQ feedback resource include for the HARQ feedback of D2D communication link RB resource, circulation move Position resource and OCC sequence resources, so that first terminal and second terminal determine that the HARQ feedback resource that can be used carries out HARQ The reception and transmission of feedback result.

The third aspect, the embodiment of the present invention also provide a kind of transmission method of D2D communication link, comprising:

The hybrid automatic repeat-request HARQ feedback resource for D2D communication link of second terminal reception base station broadcast Pond, establishing between the second terminal and first terminal has the D2D communication link；

The second terminal sends HARQ feedback result to the first terminal using the HARQ feedback resource pool.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the method also includes:

Corresponding group of mark of cooperative groups, described first where the second terminal receives the second terminal of base station broadcast Terminal corresponding first terminal mark and the second terminal corresponding second end in the cooperative groups in the cooperative groups End mark.

In the embodiment of the present invention, base station broadcasts group mark and a terminal iidentification to first terminal and second terminal, and second eventually End can get oneself group mark and terminal iidentification according to the broadcast of base station, can be distinguished by dual identification second terminal Multiple cooperative groups where oneself allow the data sending terminal in different cooperative groups correctly to identify second terminal.

In conjunction with the first possible implementation of the third aspect, in second of possible implementation of the third aspect In, the second terminal sends HARQ feedback result to the first terminal using the HARQ feedback resource, comprising:

The second terminal determines what the second terminal used according to HARQ index and the HARQ feedback resource pool HARQ feedback resource, the HARQ index include: that the group mark of cooperative groups where the second terminal and the second terminal exist Terminal iidentification in the cooperative groups；

The second terminal is whole to described first in the HARQ feedback resource that the second terminal decided uses End sends HARQ feedback result.

Further, second terminal gets dual identification from the broadcast message of base station, and second terminal can use dual Mark carrys out computed HARQ index, avoid the conflict of HARQ feedback resource when same trunk subscriber belongs to different groups, it can be achieved that The differentiation of different user, same user's difference group, the HARQ feedback resource of different user difference group in same group.

In conjunction with second of possible implementation of the third aspect, in the third possible implementation of the third aspect In, the second terminal determines the HARQ feedback that the second terminal uses according to HARQ index and the HARQ feedback resource pool Resource, comprising:

The second terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The resource block RB resource of the HARQ feedback of D2D communication link, and the cyclic shift money of the HARQ feedback for D2D communication link Source；Or,

The second terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The RB resource of the HARQ feedback of D2D communication link, and the superposition orthogonal code OCC sequence of the HARQ feedback for D2D communication link Resource；Or,

The second terminal determines that the second terminal is used for according to the HARQ index and the HARQ feedback resource pool The RB resource of the HARQ feedback of D2D communication link, the cyclic shift resource of the HARQ feedback for D2D communication link, and be used for The OCC sequence resources of the HARQ feedback of D2D communication link；

Second terminal can be used for by the HARQ feedback resource pool and HARQ index of base station broadcast in the embodiment of the present invention Determine HARQ feedback resource, the HARQ feedback resource include for the HARQ feedback of D2D communication link RB resource, circulation move Position resource and OCC sequence resources, so that first terminal and second terminal determine that the HARQ feedback resource that can be used carries out HARQ The reception and transmission of feedback result.

Fourth aspect, the embodiment of the present invention also provide a kind of base station, comprising: configuration module and broadcast module, wherein

The configuration module, for for be linked into the base station first terminal and second terminal be configured to D2D communication The hybrid automatic repeat-request HARQ feedback resource pool of link is established between the first terminal and the second terminal described in having D2D communication link；

The broadcast module, for broadcasting the HARQ feedback resource pool to the first terminal and the second terminal.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the HARQ feedback resource pool is used In determining the HARQ feedback resource for being used for D2D communication link, the HARQ feedback resource includes: for D2D communication link The resource block RB resource of HARQ feedback, the RB resource are specially to originate RB, terminate RB and the RB total number for HARQ feedback.

In conjunction with the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect In, described for the HARQ feedback resource of D2D communication link and the data transmission resources for D2D communication link is frequency division multiplexing 's.

In conjunction with the first of fourth aspect or fourth aspect possibility or second of possible implementation, in fourth aspect It is described to match when the first terminal and the second terminal belong to the same cooperative groups in second of possible implementation Module is set, is also used to distribute described corresponding group of mark of cooperative groups, and distribution for the first terminal and the second terminal The first terminal corresponding first terminal mark and second terminal in the cooperative groups is corresponding in the cooperative groups Second terminal mark；

The broadcast module is also used to broadcast described group of mark, described the to the first terminal and the second terminal One terminal iidentification, second terminal mark.

5th aspect, the embodiment of the present invention also provide a kind of terminal, and the terminal is specially first terminal, and described first eventually End, comprising: hybrid automatic repeat-request HARQ feedback resource pool receiving module and HARQ feedback result receiving module, wherein

The HARQ feedback resource pool receiving module, the HARQ for D2D communication link for receiving base station broadcast are anti- Present resource pool；

The HARQ feedback result receiving module, for receiving described the according to the HARQ feedback resource pool that receives The HARQ feedback result that two terminals are sent.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the first terminal, further includes: Terminal iidentification receiving module, corresponding group of mark of cooperative groups, institute where the first terminal for receiving the base station broadcast It is corresponding in the cooperative groups to state first terminal corresponding first terminal mark and second terminal in the cooperative groups Second terminal mark.

In conjunction with the first possible implementation of the 5th aspect, in second of possible implementation of the 5th aspect In, the HARQ feedback result receiving module includes: that HARQ feedback resource determines that submodule and HARQ feedback result receive submodule Block, wherein

The HARQ feedback resource determines submodule, for determining institute according to HARQ index and the HARQ feedback resource pool The HARQ feedback resource that second terminal uses is stated, the HARQ index includes: corresponding group of cooperative groups where the first terminal Mark and the second terminal corresponding second terminal mark in the cooperative groups；

The HARQ feedback result receiving submodule, for being received in the HARQ feedback resource that the second terminal uses The HARQ feedback result that the second terminal is sent.

In conjunction with second of possible implementation of the 5th aspect, in the third possible implementation of the 5th aspect In, the HARQ feedback resource determines submodule, is specifically used for true according to the HARQ index and the HARQ feedback resource pool The resource block RB resource of HARQ feedback of the fixed second terminal for D2D communication link, and the HARQ for D2D communication link The cyclic shift resource of feedback；Or, determining that the second terminal is used according to the HARQ index and the HARQ feedback resource pool The superposition orthogonal code OCC sequence of HARQ feedback in the RB resource of the HARQ feedback of D2D communication link, and for D2D communication link Column resource；Or, determining the second terminal for D2D communication link according to the HARQ index and the HARQ feedback resource pool HARQ feedback RB resource, the cyclic shift resource of the HARQ feedback for D2D communication link, and be used for D2D communication link HARQ feedback OCC sequence resources；

6th aspect, the embodiment of the present invention also provide a kind of terminal, comprising: the terminal is specially second terminal, described Second terminal, comprising: hybrid automatic repeat-request HARQ feedback resource pool receiving module and HARQ feedback result sending module, In,

The HARQ feedback result sending module, for being sent using the HARQ feedback resource pool to the first terminal HARQ feedback result.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the second terminal, further includes: Terminal iidentification receiving module, for corresponding group of mark of cooperative groups where receiving the second terminal of base station broadcast, described the Corresponding first terminal identifies one terminal in the cooperative groups and the second terminal is corresponding second in the cooperative groups Terminal iidentification.

In the embodiment of the present invention, base station broadcasts group mark and a terminal iidentification to first terminal and second terminal, and second eventually End can get oneself group mark and terminal iidentification according to the broadcast of base station, it can be with area by dual identification second terminal Divide multiple cooperative groups where oneself, the data sending terminal in different cooperative groups is allowed correctly to identify second terminal.

In conjunction with the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect In, the HARQ feedback result sending module includes: that HARQ feedback resource determines that submodule and HARQ feedback result send submodule Block, wherein

The HARQ feedback resource determines submodule, for determining institute according to HARQ index and the HARQ feedback resource pool The HARQ feedback resource that second terminal uses is stated, the HARQ index includes: the group mark of cooperative groups where the second terminal, With terminal iidentification of the second terminal in the cooperative groups；

The HARQ feedback result sending submodule, the HARQ feedback for being used in the second terminal decided HARQ feedback result is sent to the first terminal in resource.

In conjunction with second of possible implementation of the 6th aspect, in the third possible implementation of the 6th aspect In, the HARQ feedback result sending submodule is specifically used for true according to the HARQ index and the HARQ feedback resource pool The resource block RB resource of HARQ feedback of the fixed second terminal for D2D communication link, and the HARQ for D2D communication link The cyclic shift resource of feedback；Or, determining that the second terminal is used according to the HARQ index and the HARQ feedback resource pool The superposition orthogonal code OCC sequence of HARQ feedback in the RB resource of the HARQ feedback of D2D communication link, and for D2D communication link Column resource；Or, determining the second terminal for D2D communication link according to the HARQ index and the HARQ feedback resource pool HARQ feedback RB resource, the cyclic shift resource of the HARQ feedback for D2D communication link, and be used for D2D communication link HARQ feedback OCC sequence resources；

As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that

In embodiments of the present invention, base station is that the first terminal for being linked into base station and second terminal are configured to D2D communication The HARQ feedback resource pool of link, HARQ feedback of the base station to first terminal and second terminal broadcast for D2D communication link provide Source pond, therefore first terminal and second terminal can get the HARQ for D2D communication link based on the broadcast message of base station Feedback resources pond, when first terminal sends data packet to second terminal, second terminal can be received the data packet, and HARQ feedback can be generated as a result, the HARQ feedback resource pool of base station broadcast can be used to send HARQ feedback knot in second terminal Fruit, the HARQ feedback resource pool that base station broadcast can be used in first terminal receive HARQ feedback as a result, to which first terminal can To determine whether second terminal has correctly received the data packet of first terminal transmission according to the HARQ feedback result.The present invention is implemented The HARQ feedback resource pool of base station broadcast can be used in the transmission of data packets of D2D communication link in example, thus first Terminal and second terminal can realize the treatment mechanism based on HARQ during D2D communication link data packet, therefore Link transmission reliability can be promoted.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those skilled in the art, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is that the transmission method of D2D communication link provided in an embodiment of the present invention is applied to the system tray of D2D communication system Structure schematic diagram；

Fig. 2 is the system architecture schematic diagram of multi-user provided in an embodiment of the present invention relaying；

Fig. 3 is that the transmission method of D2D communication link provided in an embodiment of the present invention shows applied to the system architecture of LTE system It is intended to；

Fig. 4 is a kind of process blocks schematic diagram of the transmission method of D2D communication link provided in an embodiment of the present invention；

Fig. 5 is the process blocks schematic diagram of the transmission method of another kind D2D communication link provided in an embodiment of the present invention；

Fig. 6 is the process blocks schematic diagram of the transmission method of another kind D2D communication link provided in an embodiment of the present invention；

Fig. 7 is that the implementation of the HARQ feedback resource pool provided in an embodiment of the present invention for D2D communication link is illustrated Figure；

Fig. 8 is a kind of composed structure schematic diagram of base station provided in an embodiment of the present invention；

Fig. 9-a is a kind of composed structure schematic diagram of terminal provided in an embodiment of the present invention；

Fig. 9-b is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Fig. 9-c is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Figure 10-a is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Figure 10-b is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Figure 10-c is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Figure 11 is the composed structure schematic diagram of another base station provided in an embodiment of the present invention；

Figure 12 is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention；

Figure 13 is the composed structure schematic diagram of another terminal provided in an embodiment of the present invention.

Specific embodiment

In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below Embodiment be only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, this field Technical staff's every other embodiment obtained, shall fall within the protection scope of the present invention.

Description and claims of this specification and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing Similar object, without being used to describe a particular order or precedence order.It should be understood that the term used in this way is in appropriate feelings It can be interchanged under condition, this is only to describe the used differentiation in description to the object of same alike result in the embodiment of the present invention Mode.In addition, term " includes " and " having " and their any deformation, it is intended that cover it is non-exclusive include, so as to A series of process, method, system, product or equipment comprising units are not necessarily limited to those units, but may include unclear Other units that ground is listed or intrinsic for these process, methods, product or equipment.

Firstly, please refer to as shown in Figure 1, Fig. 1 gives the schematic diagram of the D2D communication technology, it is provided in an embodiment of the present invention The transmission method of D2D communication link can be applied to the D2D communication system.In Fig. 1, user equipment (full name in English: User Equipment, English abbreviation: UE) 1 as D2D communication data sending terminal, by cellular uplink (full name in English: Uplink, English abbreviation: UL) and downlink (full name in English: Downlink, English abbreviation: DL) link and long term evolution (full name in English: Long Term Evolution, English abbreviation: LTE) base station of system keeps connection, and it is controlled by UL and DL link with base station Information exchange processed.Under the control of LTE system, UE1 using between UE and UE the adjacent user UE2 of D2D communication link and UE3 carries out D2D communication, to realize information exchange and data wireless transmission.Wherein, the industry transmitted needed for UE1 to UE2 and UE3 Business data need to be only transferred directly to corresponding UE by D2D communication link and carry out data receiver, and the information between UE1 and base station Interaction pertains only to system control information, without including any D2D business datum itself.Certainly, UE2 and UE3 can also make in Fig. 1 For the transmission UE of D2D communication, is communicated by D2D to other and close on user's transmission data.In embodiments of the present invention, first terminal UE2 and UE3 are also referred to, second terminal also refers to UE1.

As shown in Fig. 2, Fig. 2 is the system architecture schematic diagram of multi-user provided in an embodiment of the present invention relaying, the present invention is real The transmission method for applying the D2D communication link of example offer can be related to multi-user's relay scene, the equipment that the low-power consumption in Fig. 2 requires Illustrate by taking wearable device as an example.In Fig. 2, RD1, RD2 and WD1 component devices cooperative groups 1, the relaying of RD1 and RD2 as WD1 Equipment auxiliary WD1 forwards its upstream data to network, and RD1, RD3 and WD2 component devices cooperative groups 2, RD1 and RD3 are as WD2's Trunking auxiliary WD2 forwards its upstream data to network.As can be seen that the same RD can serve different WD simultaneously, Such as RD1 belongs to cooperative groups 1 and cooperative groups 2 simultaneously in Fig. 2, RD1 serves WD1 and WD2 simultaneously.Two cooperative groups have respectively There is respective group of mark, group mark can be using individually mark either some form of group of radio network temporary identifier (English Literary full name: Radio Network Temporary Identifier, English abbreviation: RNTI).In Fig. 2, first terminal can be with Refer to WD1 and WD2, second terminal specifically also refers to RD1, RD2 and RD3.In application scenarios shown in Fig. 1, UE1 can Using as trunking by the data forwarding of UE2 and UE3 to network, thus can when terminal of the UE2 and UE3 as low-power consumption demand To save energy consumption.

The transmission method of D2D communication link provided in an embodiment of the present invention can be applied to LTE system, and system architecture is as schemed Shown in 3, wherein each network element and interface are described as follows:

Mobility management entity (full name in English: Mobility Management Entity, English abbreviation: MME)/service Gateway (full name in English: Serving-Gateway, English abbreviation: S-GW) is the key control node in LTE system, belongs to core Heart network element is mainly responsible for signaling processing part, i.e. control plane function, including accesses control, mobile management, adheres to and go attached , conversation management functional and gateway selection etc. functions.S-GW is the important network element of core net in LTE system, is mainly responsible for use The user plane functions of user data forwarding, i.e., carry out the routing and forwarding of data packet under the control of MME.

Evolved base station (full name in English: Evolved Node B, English abbreviation: eNB) is the base station in LTE system, main It is responsible for eating dishes without rice or wine the functions such as wireless resource management, Service Quality Management, data compression and encryption of side.Toward core-network side, eNB master It is responsible for forwarding control plane signaling to MME and forwards user face business datum to S-GW.

UE be in LTE system by eNB access network side equipment, such as can be handheld terminal, laptop or It is the equipment that other can access network.

S1 interface is the standard interface between eNB and core net.Wherein eNB is connect by S1-MME interface with MME, is used for The transmission of control signaling；ENB is connect by S1-U interface with S-GW, the transmission for user data.Wherein S1-MME interface and S1-U interface is referred to as S1 interface.

X2 interface is the standard interface between eNB and eNB, for realizing the intercommunication between base station.

Uu interface is the wireless interface between UE and base station, and UE is linked into LTE network by Uu interface.

Next the transmission method point of the D2D communication link base station being related in the embodiment of the present invention and terminal executed It is not illustrated, is illustrated first from base station side, please referred to shown in Fig. 4, D2D provided by one embodiment of the present invention is logical The transmission method for believing link, may include steps of:

401, base station be linked into base station first terminal and the second terminal mixing that is configured to D2D communication link it is automatic Retransmission request (full name in English: Hybrid Automatic Repeat reQuest, English abbreviation: HARQ) feedback resources pond, the Establishing between one terminal and second terminal has D2D communication link.

In embodiments of the present invention, a base station can access multiple terminals, be accessed in the embodiment of the present invention with base station Have and is illustrated at least two terminals (being defined as first terminal and second terminal for ease of description).Wherein, first terminal It can be used as the transmission terminal of data packet, reception terminal of the second terminal as data packet, second terminal needs to receive first eventually Hold the data packet sent.There can be a terminal as trunking, such as following examples in first terminal and second terminal In be illustrated using second terminal as trunking, then first terminal also refer to wearable device or it is other need it is low The equipment of power consumption.It is introduced in the transmission process that first terminal and second terminal pass through D2D communication link in the embodiment of the present invention HARQ treatment mechanism, first base station are the HARQ feedback resource pool that first terminal and second terminal are configured to D2D communication link, The HARQ feedback resource pool dedicated resource collection when referring to for making feedback to data transmission in D2D communication link.Base The management subject stood as first terminal and second terminal, base station are configured to the HARQ feedback resource pool of D2D communication link, real The basis that HARQ treatment mechanism is carried out between first terminal and second terminal is showed.

In embodiments of the present invention, the transmission terminal using first terminal as data packet and second terminal are as data packet The assigning process of HARQ feedback resource pool is illustrated for one reception terminal, it is to be understood that in practical applications, also There can be reception terminal of other terminals as data packet, for example, transmission terminal of the first terminal as data packet, second eventually End and reception terminal of the third terminal as data packet, then second terminal in the implementation of third terminal and the embodiment of the present invention Implementation it is similar, be no longer described in detail in subsequent embodiment third terminal execution D2D communication link transmission method, but The transmission method for the D2D communication link that can be executed refering to second terminal.

It should be noted that in embodiments of the present invention, the HARQ feedback resource for D2D communication link of base station configuration Pond is determined for the HARQ feedback resource for D2D communication link, which refers in D2D communication chain In road data are transmitted with dedicated resource when making feedback.One of achievable mode is that HARQ feedback resource includes: use In resource block (full name in English: Resource Block, English abbreviation: RB) resource of the HARQ feedback of D2D communication link.Into one Step, which is specially to originate RB, terminate RB and the RB total number for HARQ feedback.It does not limit, in the present invention Some embodiments in, RB resource that HARQ feedback resource includes can also include one section of continuous RB, i.e. RB mark is continuous One section of RB resource.Alternatively, the RB resource that HARQ feedback resource includes can also include the continuous RB of multistage, provided in each section of RB It include RB and termination RB of a starting in source.Specific implementation can be determined with connected applications scenes, only be said herein It is bright.

In embodiments of the present invention, HARQ feedback resource pool can be used for determining HARQ feedback resource, the HARQ feedback resource Different from the data transmission resources for D2D communication link, the data transmission resources for D2D communication link are referred to for the The transfer resource of transmission services data between one terminal and second terminal.HARQ feedback resource for D2D communication link can be with There are many configuration modes, such as can be for the HARQ feedback resource allocation of D2D communication link and for D2D communication chain with base station The data transmission resources on road different resource in the time domain, when so that HARQ feedback resource and data transmission resources occupying different Between resource.In addition, in some embodiments of the present invention, for the HARQ feedback resource of D2D communication link and for D2D communication chain The data transmission resources on road are frequency division multiplexings, it can distributed in resource at the same time different frequency resources respectively to HARQ feedback resource and data transmission resources, it is multiple by frequency division to avoid the conflict of HARQ feedback resource and data transmission resources Mode uses the efficiency of resource to improve terminal.In practical applications, base station can be by the way of various configurations resource Dedicated resource is distributed for the HARQ feedback of D2D communication link, herein without limitation, it is only necessary to existing D2D communication link Data transmission resources, control channel resource do not conflict.

In some embodiments of the invention, the transmission method of D2D communication link provided in an embodiment of the present invention, in addition to holding Except the realization step of row abovementioned steps 401, it can also include the following steps A1 and step A2.Wherein,

A1, when first terminal and second terminal belong to the same cooperative groups, base station is first terminal and second terminal point With corresponding group of mark of cooperative groups, and distribution first terminal corresponding first terminal mark and second terminal in cooperative groups The corresponding second terminal mark in cooperative groups；

A2, base station are identified to first terminal and second terminal broadcast group identification, first terminal mark, second terminal.

Wherein, in some embodiments of the invention, the multiple terminals for being linked into base station can be by way of cooperative groups Realize that data are transmitted, for example, also may belong to different associations as shown in Fig. 2, multiple terminals may belong to the same cooperative groups Make group, when first terminal and second terminal belong to different cooperative groups, base station be first terminal and second terminal respectively where Cooperative groups distribute different group marks, when first terminal and second terminal belong to the same cooperative groups, base station is first eventually Same corresponding group of mark of cooperative groups is distributed with second terminal in end.In addition it is right in cooperative groups can to distribute first terminal for base station The first terminal mark and second terminal answered corresponding second terminal mark in cooperative groups, then base station to first terminal and Second terminal broadcast group identification, first terminal mark, second terminal mark.

In different embodiments of the invention, first terminal and second terminal can be determined using different configuration modes HARQ feedback resource for D2D communication link.Wherein, using first terminal as the transmission of data packet end in the embodiment of the present invention End, for second terminal is as the reception terminal of data packet, second terminal sends data packet to first terminal according to oneself and connects It receives situation and sends HARQ feedback result to first terminal using HARQ feedback resource.It is described by foregoing teachings it is found that second terminal It can simultaneously be multiple transmission terminals to service as trunking.Therefore second terminal is determining what oneself can be used The HARQ feedback result in different cooperative groups is distinguished when HARQ feedback resource using dual identification.When first terminal and second When terminal belongs to the same cooperative groups, second terminal can be identified the group of cooperative groups where first terminal and second terminal, and For terminal iidentification of the second terminal in cooperative groups as dual identification, being determined by this dual identification needs HARQ to be used Feedback resources.Likewise, first terminal can also be identified according to the group of oneself and terminal iidentification of the second terminal in cooperative groups To determine that second terminal is the HARQ feedback resource used when the first terminal sends HARQ feedback result.Second terminal belongs to more Data packet when a cooperative groups to from the second terminal to different cooperative groups, which sends to distinguish when terminal sends HARQ feedback result, to be made With different HARQ feedback resources.

In other embodiments of the invention, if first terminal, second terminal and third terminal are in the same cooperation In group, transmission terminal of the first terminal as data packet, the reception terminal of second terminal and third terminal as data packet.Then base The end stood in addition to the group mark and second terminal in addition to cooperative groups where distribution first terminal and second terminal in the cooperative groups Except the mark of end, base station can also be that third terminal distribution group identifies and third terminal exists according to cooperative groups where third terminal Terminal iidentification in the cooperative groups.Second terminal and third terminal can be respectively according to the group of assistance group where oneself marks and oneself Oneself determines the HARQ feedback resource oneself used at terminal iidentification in assistance group.

402, HARQ feedback resource pool is broadcasted to first terminal and second terminal in base station.

In embodiments of the present invention, after the HARQ feedback resource pool for D2D communication link is completed in base station configuration, base station The HARQ feedback resource pool for being used for D2D communication link can be sent to first terminal and second terminal, such as base station can be used Existing broadcast message is to broadcast the HARQ feedback resource pool for D2D communication link, so that multiple terminals of the BTS management The HARQ feedback resource pool for D2D communication link can be received, certain base station can use negotiation using with terminal Mode determines the format of dedicated broadcast message, communicates to be broadcasted using the pre-configuration mode of base station and terminal for D2D The HARQ feedback resource pool of link, terminal are determined to receive by pre-configuration mode and be provided for the HARQ feedback of D2D communication link Source pond.

In some embodiments of the invention, step 402 base station is provided to first terminal and second terminal broadcast HARQ feedback Source pond, includes the following steps:

Base station is disappeared by system information block (full name in English: System Information Block, English abbreviation: SIB) Cease the HARQ feedback resource pool that D2D communication link is used for first terminal and second terminal broadcast.

Wherein, SIB message can be used to broadcast the HARQ feedback resource pool for D2D communication link in base station, then and first Terminal and second terminal can receive the HARQ feedback resource for D2D communication link by the Radio Link between base station Pond.Specifically, base station can increase some fields in SIB message is used for transmission HARQ feedback resource pool, base station can also make It is used for transmission HARQ feedback resource pool with the field reserved in SIB message, specific implementation is without limitation.

By the illustration of the foregoing teachings embodiment of the present invention it is found that base station is the first terminal and for being linked into base station Two terminals are configured to the HARQ feedback resource pool of D2D communication link, and base station is used for D2D to first terminal and second terminal broadcast The HARQ feedback resource pool of communication link, therefore first terminal and second terminal can get use based on the broadcast message of base station In the HARQ feedback resource pool of D2D communication link, when first terminal sends data packet to second terminal, second terminal can be right The data packet is received, and HARQ feedback can be generated as a result, the HARQ feedback money of base station broadcast can be used in second terminal Source pond sends HARQ feedback as a result, the HARQ feedback resource pool that base station broadcast can be used in first terminal receives HARQ feedback As a result, to which first terminal can determine whether second terminal has correctly received first terminal transmission according to the HARQ feedback result Data packet.The HARQ feedback resource pool of base station broadcast can be used for the data packet in D2D communication link in the embodiment of the present invention In transmission process, so that first terminal and second terminal can be realized during D2D communication link data packet and be based on The treatment mechanism of HARQ, therefore link transmission reliability can be promoted.

It is said in previous embodiment from transmission method of the base station side to D2D communication link provided in an embodiment of the present invention Bright, next from terminal side, the transmission method to D2D communication link provided in an embodiment of the present invention is illustrated, and is please referred to such as figure Shown in 5, the transmission method of D2D communication link provided in an embodiment of the present invention, it may include following steps:

501, first terminal receives the HARQ feedback resource pool for D2D communication link of base station broadcast.

In embodiments of the present invention, first terminal is as a terminal for being linked into base station, when base station passes through broadcast message When sending the HARQ feedback resource pool for being used for D2D communication link, first terminal can receive the HARQ for D2D communication link Feedback resources pond, first terminal parse to the HARQ feedback resource pool for D2D communication link available to specific HARQ feedback resource, first terminal can receive the data sent by the HARQ feedback resource in the HARQ feedback resource. Wherein, the concrete mode of base station configuration HARQ feedback resource pool can be refering to the description of previous embodiment, and details are not described herein again.

In embodiments of the present invention, first terminal is that data packet sends terminal, can send data packet to second terminal.The One terminal can carry out cyclic redundancy check (full name in English: Cyclic Redundancy to the data packet that needs are sent Check, English abbreviation: CRC) processing and forward error correction (full name in English: Forward Error Correction, English abbreviation: FEC) coded treatment, and pass through D2D communication link to the data packet after the completion of second terminal transmission processing.

In embodiments of the present invention, it is illustrated for the transmission terminal using first terminal as data packet in first terminal The HARQ treatment mechanism realized between second terminal, first terminal, which is got, needs the data packet that sends, which can be with It is the upstream data packet that first terminal needs to be sent to base station, for first terminal in order to save power consumption, first terminal can be by the number The second terminal as trunking is sent to according to packet.Firstly, first terminal carries out HARQ processing to the data packet, specifically, First terminal can add CRC check position to the data packet, then carry out FEC coding, when complete above-mentioned two treatment process it Afterwards, data packet can be sent completely CRC processing by the D2D communication link between first terminal and second terminal by first terminal With the data packet of FEC coded treatment.For example, the data for D2D communication link that base station distribution can be used in first terminal pass Defeated resource sends data packet.

502, first terminal receives the HARQ feedback result that second terminal is sent according to the HARQ feedback resource pool received.

In inventive embodiments, when first terminal by D2D communication link between first terminal and second terminal to the After two terminals send data packet, the data packet that second terminal can be sent by D2D communication link reception first terminal, second Next terminal can carry out the treatment mechanism of HARQ, i.e., second terminal the data packet received can be carried out FEC decoding and CRC processing generates HARQ feedback as a result, for example, if second terminal according to the result for carrying out CRC check to the data packet received The data packet that the first terminal received is sent is that correctly, then the HARQ feedback result that second terminal generates can be confirmation (full name in English: Acknowledgement, English abbreviation: ACK) message, if what the first terminal that second terminal receives was sent Data packet be it is wrong, then second terminal generate HARQ feedback result can be to deny (full name in English: Negative Acknowledgment, English abbreviation: NACK) message.After second terminal generates HARQ feedback result, due to second terminal The HARQ feedback resource pool for D2D communication link can also be got from base station, therefore second terminal can be used base station and match The HARQ feedback resource pool set sends HARQ feedback as a result, first terminal gets the HARQ feedback that base station configures to first terminal After resource pool, first terminal can receive HARQ feedback by the HARQ feedback resource pool as a result, first terminal is according to connecing Whether the data packet that the HARQ feedback result received is sent before getting sends success, so that first terminal may determine whether It needs to retransmit old packet, or starts to send new data packet.

In some embodiments of the invention, the transmission method of D2D communication link provided in an embodiment of the present invention, in addition to holding Except the realization step of row abovementioned steps 501 and step 502, it can also include the following steps B1.Wherein,

Corresponding group of mark of cooperative groups, first terminal are being assisted where B1, first terminal receive the first terminal of base station broadcast Organize interior corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups.

In some embodiments of the invention, the multiple terminals for being linked into base station can be realized by way of cooperative groups Data transmission, for example, also may belong to different cooperative groups as shown in Fig. 2, multiple terminals may belong to the same cooperative groups, When first terminal and second terminal belong to different cooperative groups, base station is the cooperation where first terminal and second terminal difference Group distributes different group marks, and when first terminal and second terminal belong to the same cooperative groups, base station is first terminal and the Corresponding group of mark of the same cooperative groups of two terminal distributions.In addition base station can distribute first terminal corresponding in cooperative groups One terminal iidentification and the second terminal corresponding second terminal mark in cooperative groups, then base station is whole to first terminal and second Broadcast group identification, first terminal mark, second terminal mark are held, then first terminal can get first by the broadcast of base station Cooperative groups corresponding group of mark, first terminal where terminal corresponding first terminal mark and second terminal in cooperative groups exist Corresponding second terminal mark in the cooperative groups.

Under the realization scene that the embodiment of the present invention executes step B1, step 502 first terminal is according to the HARQ received Feedback resources pond receives the HARQ feedback result that second terminal is sent, comprising:

C1, first terminal determine that the HARQ feedback that second terminal uses provides according to HARQ index and HARQ feedback resource pool Source, HARQ index include: corresponding group of mark of cooperative groups and second terminal where first terminal corresponding second in cooperative groups Terminal iidentification；

C2, first terminal receive the HARQ feedback knot of second terminal transmission in the HARQ feedback resource that second terminal uses Fruit.

Wherein, in the application scenarios that multi-user as shown in Figure 2 relays, second terminal can be used as trunking, the Two terminals may belong to multiple cooperative groups, when first terminal and second terminal belong to the same cooperative groups.When second terminal makes When with HARQ feedback resource, second terminal can identify and the according to the group of the cooperative groups where second terminal and first terminal Terminal iidentification of two terminals in the cooperative groups determines the HARQ feedback resource that second terminal uses, and then second terminal is in determination HARQ feedback result is sent to first terminal in the HARQ feedback resource that the second terminal got off uses.First terminal can use Similar mode is determined according to the terminal iidentification of the group of cooperative groups where first terminal mark and second terminal in cooperative groups The HARQ feedback resource that second terminal uses.After first terminal determines the HARQ feedback resource that second terminal uses, first eventually End can receive the HARQ feedback result of second terminal transmission in the HARQ feedback resource that second terminal uses.If first terminal When the data packet for having multiple trunkings to receive first terminal transmission in the same cooperative groups, each trunking can It is received and is demodulated with the data packet sent using HARQ treatment mechanism to first terminal, for example, third terminal can also connect The data packet that first terminal is sent is received, third terminal can also send HARQ feedback to first terminal as a result, then first terminal root Determine what third terminal used according to the group mark and terminal iidentification of the third terminal in cooperative groups of cooperative groups where first terminal HARQ feedback resource, first terminal receive the HARQ feedback of third terminal transmission in the HARQ feedback resource that third terminal uses As a result.

Further, in some embodiments of the invention, step C1 first terminal is according to HARQ index and HARQ feedback Resource pool determines the HARQ feedback resource that second terminal uses, comprising:

C11, first terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The resource block RB resource of HARQ feedback, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or,

C12, first terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The RB resource of HARQ feedback, and the superposition orthogonal code OCC sequence resources of the HARQ feedback for D2D communication link；Or,

C13, first terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The RB resource of HARQ feedback, the cyclic shift resource of the HARQ feedback for D2D communication link, and for D2D communication link The OCC sequence resources of HARQ feedback；

Wherein, RB resource is specially to originate RB, terminate RB and the RB total number for HARQ feedback.

It in the above embodiment of the invention, may include: for D2D for the HARQ feedback resource of D2D communication link The RB resource of the HARQ feedback of communication link, and HARQ feedback for D2D communication link cyclic shift (English name: Cyclic Shift) resource；Or, the HARQ feedback resource for D2D communication link may include: for D2D communication link The RB resource of HARQ feedback, and the superposition orthogonal code (full name in English: Orthogonal of the HARQ feedback for D2D communication link Cover code, English abbreviation: OCC) sequence resources；Or, the HARQ feedback resource for D2D communication link may include: use It is provided in the cyclic shift of the resource block RB resource of the HARQ feedback of D2D communication link, the HARQ feedback for D2D communication link Source, and the OCC sequence resources of the HARQ feedback for D2D communication link.

In above-mentioned implementation of the invention, HARQ feedback resource may include the resource of a variety of concrete forms, with full Sufficient second terminal sends the needs of HARQ feedback result, likewise, first terminal can be received according to the HARQ feedback resource HARQ feedback result.In embodiments of the present invention, HARQ feedback resource may include RB resource used in HARQ feedback, in addition to this Except RB resource, HARQ feedback resource can also include at least one of following resource: cyclic shift resource and OCC sequence money Source.Wherein, cyclic shift resource, which refers to sending used in HARQ feedback result, specifically shifts number, and OCC sequence resources refer to Be send HARQ feedback result used in OCC sequence names.If there are multiple terminals to require to send HARQ feedback result Different RB resources can be used in each terminal, different cyclic shift resources also can be used, or use different OCC sequences Column resource, so that the first terminal of recipient passes through the difference of RB resource, the difference of cyclic shift resource and OCC sequence resources Different determinations are which sender has sent HARQ feedback result.

By the illustration of the foregoing teachings embodiment of the present invention it is found that first terminal and second terminal can be based on base station Broadcast message get the HARQ feedback resource pool for D2D communication link, when first terminal to second terminal send data Bao Shi, second terminal can receive the data packet, and HARQ feedback can be generated as a result, base can be used in second terminal Stand broadcast HARQ feedback resource pool come send HARQ feedback as a result, first terminal can be used base station broadcast HARQ feedback money Source pond receives HARQ feedback as a result, to which first terminal can determine whether second terminal is correct according to the HARQ feedback result Receive the data packet of first terminal transmission.The HARQ feedback resource pool of base station broadcast can be used in the embodiment of the present invention In the transmission of data packets of D2D communication link, so that first terminal and second terminal can be in D2D communication link data The treatment mechanism based on HARQ is realized during packet, therefore can promote link transmission reliability.

D2D provided in an embodiment of the present invention is communicated from the transmission terminal (i.e. first terminal) of data packet in previous embodiment The transmission method of link is illustrated, and next mentions from the reception terminal (i.e. second terminal) of data packet to the embodiment of the present invention The transmission method of the D2D communication link of confession is illustrated, and is please referred to as shown in fig. 6, D2D communication chain provided in an embodiment of the present invention The transmission method on road, it may include following steps:

601, second terminal receives the HARQ feedback resource pool for D2D communication link of base station broadcast.

In embodiments of the present invention, second terminal is as a terminal for being linked into base station, when base station passes through broadcast message When sending the HARQ feedback resource pool for being used for D2D communication link, second terminal can receive the HARQ for D2D communication link Feedback resources pond, second terminal parse to the HARQ feedback resource pool for D2D communication link available to specific HARQ feedback resource, second terminal can send data to first terminal in the HARQ feedback resource.Wherein, base station configures The concrete mode of HARQ feedback resource pool can be refering to the description of previous embodiment, and details are not described herein again.

By the description of previous embodiment it is found that first terminal is that data packet sends terminal, number can be sent to second terminal According to packet.Second terminal receives the data packet that first terminal is sent by D2D communication link.In embodiments of the present invention, with first Terminal as being illustrated the HARQ treatment mechanism realized between first terminal and second terminal for the transmitting terminal of data packet, First terminal gets the data packet for needing to send, which can be the upstream data that first terminal needs to be sent to base station Packet, for first terminal in order to save power consumption, first terminal can send the packet to the second terminal as trunking.Example Such as, the data transmission resources for D2D communication link of base station distribution can be used to send data packet in first terminal, and second eventually End can receive the data packet of first terminal transmission according to the data transmission resources for D2D communication link that base station is distributed.

In embodiments of the present invention, when second terminal receives the data packet that first terminal is sent by D2D communication link Later, second terminal can carry out the treatment mechanism of HARQ, i.e. second terminal can carry out FEC decoding to the data packet received With CRC processing, HARQ feedback result is generated according to the result for carrying out CRC check to the data packet received.For example, if second is whole Terminating the data packet that the first terminal received is sent is that correctly, then the HARQ feedback result that second terminal generates can be ACK Message, if the data packet that the first terminal that second terminal receives is sent is HARQ feedback wrong, that second terminal generates It as a result can be NACK message.After second terminal generates HARQ feedback result, since second terminal gets use from base station In the HARQ feedback resource pool of D2D communication link, thus second terminal can be used the HARQ feedback resource pool of base station configuration to First terminal sends HARQ feedback result.

602, second terminal sends HARQ feedback result to first terminal using HARQ feedback resource pool.

After second terminal generates HARQ feedback result, since second terminal is got from base station for D2D communication chain The HARQ feedback resource pool on road, therefore second terminal can be used the HARQ feedback resource pool that base station configures and send to first terminal HARQ feedback result.

In some embodiments of the invention, the transmission method of D2D communication link provided in an embodiment of the present invention, in addition to holding Except the realization step of row abovementioned steps 601 and step 602, it can also include the following steps D1.Wherein,

Corresponding group of mark of cooperative groups, first terminal are being assisted where D1, first terminal receive the first terminal of base station broadcast Organize interior corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups.

In some embodiments of the invention, the multiple terminals for being linked into base station can be realized by way of cooperative groups Data transmission, for example, also may belong to different cooperative groups as shown in Fig. 2, multiple terminals may belong to the same cooperative groups, When first terminal and second terminal belong to different cooperative groups, base station is the cooperation where first terminal and second terminal difference Group distributes different group marks, and when first terminal and second terminal belong to the same cooperative groups, base station is first terminal and the Corresponding group of mark of the same cooperative groups of two terminal distributions.In addition base station can distribute first terminal corresponding in cooperative groups One terminal iidentification and the second terminal corresponding second terminal mark in cooperative groups, then base station is whole to first terminal and second Broadcast group identification, first terminal mark, second terminal mark are held, then second terminal can get first by the broadcast of base station Cooperative groups corresponding group of mark, first terminal where terminal corresponding first terminal mark and second terminal in cooperative groups exist Corresponding second terminal mark in the cooperative groups.

Under the realization scene that the embodiment of the present invention executes step D1, step 602 second terminal uses HARQ feedback resource Pond sends HARQ feedback result to first terminal, comprising:

E1, second terminal determine that the HARQ feedback that second terminal uses provides according to HARQ index and HARQ feedback resource pool Source, HARQ index include: the terminal iidentification of the group mark and second terminal of cooperative groups where second terminal in cooperative groups；

E2, second terminal send HARQ to first terminal in the HARQ feedback resource that the second terminal decided uses Feedback result.

Wherein, in the application scenarios that multi-user as shown in Figure 2 relays, second terminal can be used as trunking, the Two terminals may belong to multiple cooperative groups, when first terminal and second terminal belong to the same cooperative groups.When second terminal makes When with HARQ feedback resource, second terminal can identify and the according to the group of the cooperative groups where second terminal and first terminal Terminal iidentification of two terminals in the cooperative groups determines the HARQ feedback resource that second terminal uses, and then second terminal is in determination HARQ feedback result is sent to first terminal in the HARQ feedback resource that the second terminal got off uses.If first terminal is same When the data packet for having multiple trunkings to receive first terminal transmission in a cooperative groups, each trunking can be used The data packet that HARQ treatment mechanism sends first terminal is received and is demodulated, for example, third terminal also can receive first The data packet that terminal is sent, third terminal can also send HARQ feedback as a result, then third terminal is according to third to first terminal The HARQ that the group mark and terminal iidentification of the third terminal in cooperative groups of cooperative groups where terminal determine that third terminal uses is anti- Resource is presented, third terminal sends HARQ feedback result in the HARQ feedback resource that third terminal uses.

Further, in some embodiments of the invention, step E1 second terminal is according to HARQ index and HARQ feedback Resource pool determines the HARQ feedback resource that second terminal uses, comprising:

E11, second terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The resource block RB resource of HARQ feedback, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or,

E12, second terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The RB resource of HARQ feedback, and the superposition orthogonal code OCC sequence resources of the HARQ feedback for D2D communication link；Or,

E13, second terminal determine second terminal for D2D communication link according to HARQ index and HARQ feedback resource pool The RB resource of HARQ feedback, the cyclic shift resource of the HARQ feedback for D2D communication link, and for D2D communication link The OCC sequence resources of HARQ feedback；

It in the above embodiment of the invention, may include: for D2D for the HARQ feedback resource of D2D communication link The RB resource of the HARQ feedback of communication link, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or, being used for The HARQ feedback resource of D2D communication link may include: the RB resource for the HARQ feedback of D2D communication link, and be used for D2D The OCC sequence resources of the HARQ feedback of communication link；Or, the HARQ feedback resource for D2D communication link may include: to be used for The resource block RB resource of the HARQ feedback of D2D communication link, the cyclic shift resource of the HARQ feedback for D2D communication link, With the OCC sequence resources of the HARQ feedback for D2D communication link.

In above-mentioned implementation of the invention, HARQ feedback resource may include the resource of a variety of concrete forms, with full Sufficient second terminal sends the needs of HARQ feedback result, likewise, second terminal can be according to the HARQ feedback resource to first Terminal sends HARQ feedback result.In embodiments of the present invention, HARQ feedback resource may include the money of RB used in HARQ feedback Source, other than the RB resource, HARQ feedback resource can also include at least one of following resource: cyclic shift resource and OCC sequence resources.If different RB resources can be used in each terminal when having multiple terminals to require to send HARQ feedback result, Also different cyclic shift resources can be used, or use different OCC sequence resources, so that the first terminal of recipient is logical The difference, the difference of cyclic shift resource and the Bu Tong determination of OCC sequence resources for crossing RB resource are which sender has sent HARQ feedback result.

If second terminal is in multiple cooperative groups as trunking, second terminal has not in different cooperative groups Same group mark, second terminal can determine the HARQ that oneself can be used according to the dual identification of group mark and terminal iidentification Feedback resources send HARQ feedback as a result, using the second terminal when belonging to multiple cooperative groups to avoid second terminal The differentiation of HARQ feedback resource.For example, the group mark of cooperative groups where second terminal can be group ID, second terminal is being assisted Making the terminal iidentification in group can be UE ID.

In order to facilitate a better understanding and implementation of the above scheme of the embodiment of the present invention, corresponding application scenarios of illustrating below come It is specifically described.The transmission method of D2D communication link provided in an embodiment of the present invention can support HARQ to retransmit, in D2D chain Road introduces HARQ feedback mechanism, improves the transmission reliability of D2D chain road.The embodiment of the present invention can also solve in multi-user After the problem that different user HARQ information under scene cannot be distinguished.

In order to improve the transmission quality on D2D communication link, HARQ feedback mechanism is introduced on D2D communication link.Firstly, Instruction is used for the HARQ feedback resource pool of D2D communication link in SIB message, which can be used for determining second The HARQ feedback resource that terminal uses.HARQ feedback resource and D2D data transmission resources can be multiplexed into one in the form of frequency division It rises.Starting resource block (the full name in English: Resource Block, English for indicating to be used for HARQ feedback resource is needed in SIB message It is literary referred to as: RB), terminate RB and the RB total number for HARQ feedback.As shown in Figure 7.With a D2D subframe (English name: Subframe for the HARQ feedback resource pool configured on), base station configures different frequency resources, and to wide area network, (English is complete respectively Claim: Wide Area Network, English abbreviation: WAN) UEs physical uplink control channel (full name in English: Physical Uplink Control CHannel, English abbreviation: PUCCH), it is D2D HARQ feedback resource pool, D2D data resource pond, other D2D data resource pond or WAN resource pool, such as Physical Random Access Channel (full name in English: Physical Random Access Channel, English abbreviation: PRACH), D2D data resource pond, D2D HARQ feedback resource pool, WAN UEs PUCCH.Wherein, The D2D HARQ feedback resource pool distributed on low frequency includes: the PRB of the starting PRB and HARQ feedback resource of HARQ feedback resource Number, the D2D HARQ feedback resource pool distributed on high frequency include: the PRB number and HARQ feedback resource of HARQ feedback resource Termination PRB.In addition, D2D data resource pond includes: the data transmission resources for D2D communication link of base station distribution, D2D HARQ feedback resource pool includes: the HARQ feedback resource for D2D communication link of base station distribution.

After configuring HARQ feedback resource for multiple terminals, HARQ feedback resource pool is broadcast to first eventually by base station for base station End and second terminal, on the HARQ feedback resource pool of D2D communication link, different user can be multiple by code division multiplexing and frequency division Mode can pass through code division multiplexing and frequency division multiplexing and orthogonal sequence etc. using HARQ feedback resource or different user Mode uses HARQ feedback resource, is not particularly limited to this embodiment of the present invention.

It, can be by the HARQ feedback resource of D2D communication link come really on the HARQ feedback resource pool of D2D communication link Determine the information such as RB resource and cyclic shift resource used in HARQ feedback (or OCC sequence resources).For example, passing through D2D HARQ Feedback resources can determine the one of which in following information used in HARQ feedback: the RB resource at place and used follow Ring shifts resource.Or, the RB resource at place and used OCC sequence resources.Or, the RB resource and used circulation at place Shift resource and OCC sequence resources.

In order to distinguish to different user, trunking can calculate D2D communication link using dual identification The HARQ index of the HARQ index of HARQ feedback resource, i.e. the HARQ feedback resource of D2D communication link may include: group index The UE index of (English name: group index) and user in the cooperative groups is determined.Wherein, group index and user UE index in the cooperative groups is notified in group when multicast group is established, by base station.

A kind of illustrative explanation, the HARQ index of the HARQ feedback resource of D2D communication link can be in the following way It determines:

D2D_HARQ=group_index+ue_index,

Another illustrative explanation determines used RB resource and cyclic shift resource by HARQ index, leads to It crosses mode as follows and determines RB resource:

The RB resource for being used for transmission HARQ ACK/NACK is determined by following formula:

Wherein, The subcarrier number in each RB is indicated, for example, value can be with It is 12.

Cyclic shift resource is determined by mode as follows:

Wherein,

Value can be such as different for that can have under different time interval resources there are many implementation Calculation, such as:

for slot1:

for slot2:

Wherein, n_sIndicate that timeslot number, l indicate the number of subframe.WithIt is by D2D HARQ resource index It determines, is the parameter for determining cyclic shift.It should be noted that for n_PRBIt is specific with cyclic shift resource Implementation can be determined in conjunction with the prior art, and the meaning of single physical amount in above-mentioned formula is no longer explained one by one.

By it is aforementioned it is interior to it is of the invention for example, in the embodiment of the present invention in SIB message increase newly HARQ feedback resource Pond indicate information, in the form of resource pool with data resource pond carry out frequency division multiplexing, both determined HARQ feedback result send and Resource used in receiving, in turn avoids conflicting with data transmission resources, draw in the transmission of data packets of D2D communication link Enter HARQ treatment mechanism, compared to the D2D communication link for only supporting broadcast mode, link biography can be promoted by introducing HARQ treatment mechanism Defeated reliability.By distinguishing HARQ feedback resource used in different group, difference UE using group information and UE information, Using dual identification come computed HARQ index, avoid same user in different cooperative groups, what feedback resources cannot be distinguished asks Topic, it can be achieved that different user in same group, same user's difference group, different user difference group feedback resources differentiation, keep away HARQ resource contention when same user (trunk subscriber) belongs to different groups is exempted from.

It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because According to the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know It knows, the embodiments described in the specification are all preferred embodiments, and related actions and modules is not necessarily of the invention It is necessary.

For the above scheme convenient for the better implementation embodiment of the present invention, phase for implementing the above scheme is also provided below Close device.

It please refers to shown in Fig. 8, a kind of base station 800 provided in an embodiment of the present invention, may include: configuration module 801 and wide Broadcasting module 802, wherein

The configuration module 801, for be linked into the base station first terminal and second terminal to be configured to D2D logical The hybrid automatic repeat-request HARQ feedback resource pool for believing link, is established between the first terminal and the second terminal State D2D communication link；

The broadcast module 802, for broadcasting the HARQ feedback resource to the first terminal and the second terminal Pond.

In some embodiments of the invention, the HARQ feedback resource pool is for determining for D2D communication link HARQ feedback resource, the HARQ feedback resource include: the resource block RB resource for the HARQ feedback of D2D communication link, institute Stating RB resource is specially to originate RB, terminate RB and the RB total number for HARQ feedback.

In some embodiments of the invention, described to be communicated for the HARQ feedback resource of D2D communication link and for D2D The data transmission resources of link are frequency division multiplexings.

In some embodiments of the invention, the broadcast module 802 is specifically used for passing through system information block SIB message To the first terminal and the second terminal broadcast HARQ feedback resource for being used for D2D communication link.

In some embodiments of the invention, when the first terminal and the second terminal belong to the same cooperative groups When, the configuration module 801 is also used to distribute described corresponding group of mark of cooperative groups for the first terminal and the second terminal Know, and corresponding first terminal identifies the distribution first terminal in the cooperative groups and the second terminal is described Corresponding second terminal mark in cooperative groups；

The broadcast module 802 is also used to broadcast described group of mark, described to the first terminal and the second terminal First terminal mark, second terminal mark.

It please refers to shown in Fig. 9-a, a kind of terminal 900 provided in an embodiment of the present invention, the terminal 900 is specially first whole End, the first terminal, comprising: HARQ feedback resource pool receiving module 901 and HARQ feedback result receiving module 902, wherein

The HARQ feedback resource pool receiving module 901, for receiving the HARQ for D2D communication link of base station broadcast Feedback resources pond；

The HARQ feedback result receiving module 902, for receiving institute according to the HARQ feedback resource pool received State the HARQ feedback result of second terminal transmission.

In some embodiments of the invention, as shown in Fig. 9-b, the first terminal 900, further includes: terminal iidentification connects Module 903 is received, corresponding group of mark of cooperative groups, described first where the first terminal for receiving the base station broadcast are eventually End corresponding first terminal mark and the second terminal corresponding second terminal in the cooperative groups in the cooperative groups Mark.

In some embodiments of the invention, as shown in Fig. 9-c, the HARQ feedback result receiving module 902 includes: HARQ feedback resource determines submodule 9021 and HARQ feedback result receiving submodule 9022, wherein

The HARQ feedback resource determines submodule 9021, for true according to HARQ index and the HARQ feedback resource pool The HARQ feedback resource that the fixed second terminal uses, the HARQ index include: that cooperative groups where the first terminal are corresponding Group mark and the second terminal corresponding second terminal mark in the cooperative groups；

The HARQ feedback result receiving submodule 9022, the HARQ feedback resource for being used in the second terminal Receive the HARQ feedback result that the second terminal is sent.

In some embodiments of the invention, the HARQ feedback resource determines submodule 9021, is specifically used for according to institute It states HARQ index and the HARQ feedback resource pool determines resource of the second terminal for the HARQ feedback of D2D communication link Block RB resource, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or, according to the HARQ index and described HARQ feedback resource pool determines RB resource of the second terminal for the HARQ feedback of D2D communication link, and communicates for D2D The superposition orthogonal code OCC sequence resources of the HARQ feedback of link；Or, according to the HARQ index and the HARQ feedback resource pool Determine RB resource of the second terminal for the HARQ feedback of D2D communication link, the HARQ feedback for D2D communication link Cyclic shift resource, and the OCC sequence resources of the HARQ feedback for D2D communication link；

It please refers to shown in Figure 10-a, a kind of terminal 1000 provided in an embodiment of the present invention, the terminal 1000 is specially the Two terminals, the second terminal, comprising: HARQ feedback resource pool receiving module 1001 and HARQ feedback result sending module 1002, wherein

The HARQ feedback resource pool receiving module 1001, for receive base station broadcast for D2D communication link HARQ feedback resource pool；

The HARQ feedback result sending module 1002, for using the HARQ feedback resource pool to the first terminal Send HARQ feedback result.

In some embodiments of the invention, as shown in Figure 10-b, the second terminal 1000, further includes: terminal iidentification Receiving module 1003, corresponding group of mark of cooperative groups, described first where the second terminal for receiving base station broadcast are eventually End corresponding first terminal mark and the second terminal corresponding second terminal in the cooperative groups in the cooperative groups Mark.

In some embodiments of the invention, as shown in Figure 10-c, the HARQ feedback result sending module 1002 includes: HARQ feedback resource determines submodule 10021 and HARQ feedback result sending submodule 10022, wherein

The HARQ feedback resource determines submodule 10021, for according to HARQ index and the HARQ feedback resource pool Determine the HARQ feedback resource that the second terminal uses, the HARQ index includes: cooperative groups where the second terminal The terminal iidentification of group mark and the second terminal in the cooperative groups；

The HARQ feedback result sending submodule 10022, for what is used in the second terminal decided HARQ feedback result is sent to the first terminal in HARQ feedback resource.

In some embodiments of the invention, the HARQ feedback result sending submodule 10022 is specifically used for according to institute It states HARQ index and the HARQ feedback resource pool determines resource of the second terminal for the HARQ feedback of D2D communication link Block RB resource, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or, according to the HARQ index and described HARQ feedback resource pool determines RB resource of the second terminal for the HARQ feedback of D2D communication link, and communicates for D2D The superposition orthogonal code OCC sequence resources of the HARQ feedback of link；Or, according to the HARQ index and the HARQ feedback resource pool Determine RB resource of the second terminal for the HARQ feedback of D2D communication link, the HARQ feedback for D2D communication link Cyclic shift resource, and the OCC sequence resources of the HARQ feedback for D2D communication link；

It should be noted that the contents such as information exchange, implementation procedure between each module/unit of above-mentioned apparatus, due to Embodiment of the present invention method is based on same design, and bring technical effect is identical as embodiment of the present invention method, particular content Reference can be made to the narration in embodiment of the method shown in the present invention is aforementioned, details are not described herein again.

The embodiment of the present invention also provides a kind of computer storage medium, wherein and the computer storage medium is stored with program, It includes some or all of record step in above method embodiment that the program, which executes,.

Next another base station provided in an embodiment of the present invention is introduced, is please referred to shown in Figure 11, base station 1100 includes:

Receiver 1101, transmitter 1102, processor 1103 and (the wherein processor in base station 1100 of memory 1104 1103 quantity can be one or more, take a processor as an example in Figure 11).In some embodiments of the invention, it receives Device 1101, transmitter 1102, processor 1103 and memory 1104 can be connected by bus or other means, wherein Tu11Zhong For being connected by bus.

The method that the embodiments of the present invention disclose can be applied in processor 1103, or real by processor 1103 It is existing.Processor 1103 can be a kind of IC chip, the processing capacity with signal.During realization, the above method Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1103 or software form.Above-mentioned Processor 1103 can be general processor, digital signal processor (full name in English: digital signal processing, English abbreviation: DSP), specific integrated circuit (full name in English: Application Specific Integrated Circuit, English abbreviation: ASIC), ready-made programmable gate array (full name in English: Field-Programmable Gate Array, English contracting Write: FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented Or disclosed each method, step and logic diagram in the execution embodiment of the present invention.General processor can be microprocessor Or the processor is also possible to any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be with Be embodied directly in hardware decoding processor and execute completion, or in decoding processor hardware and software module combination executed At.Software module can be located at random access memory, and flash memory, read-only memory, programmable read only memory or electrically-erasable can In the storage medium of this fields such as programmable memory, register maturation.The storage medium is located at memory 1104, processor 1103 The step of reading the information in memory 1104, completing the above method in conjunction with its hardware.

Wherein, processor 1103, the transmission method of the D2D communication link for executing the realization of aforementioned base station side.Specifically, Processor 1103 can be used for executing following steps:

The mixed automatic retransfer of D2D communication link is configured to be linked into first terminal and the second terminal of the base station HARQ feedback resource pool is requested, establishing between the first terminal and the second terminal has the D2D communication link；

The HARQ feedback resource pool is broadcasted to the first terminal and the second terminal.

In some embodiments of the invention, the HARQ feedback resource pool stored in memory 1104 is used for determining In the HARQ feedback resource of D2D communication link, the HARQ feedback resource includes: the HARQ feedback for D2D communication link Resource block RB resource, the RB resource are specially to originate RB, terminate RB and the RB total number for HARQ feedback.

In some embodiments of the invention, the HARQ for D2D communication link stored in memory 1104 is anti- It presents resource and the data transmission resources for D2D communication link is frequency division multiplexing.

In some embodiments of the invention, processor 1103 is also used to execute following steps:

Next another terminal provided in an embodiment of the present invention is introduced, which is specially first terminal, please refers to figure Shown in 12, terminal 1200 includes:

Receiver 1201, transmitter 1202, processor 1203 and (the wherein processor in terminal 1200 of memory 1204 1203 quantity can be one or more, take a processor as an example in Figure 12).In some embodiments of the invention, it receives Device 1201, transmitter 1202, processor 1203 and memory 1204 can be connected by bus or other means, wherein Tu12Zhong For being connected by bus.

The method that the embodiments of the present invention disclose can be applied in processor 1203, or real by processor 1203 It is existing.Processor 1203 can be a kind of IC chip, the processing capacity with signal.During realization, the above method Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1203 or software form.Above-mentioned Processor 1203 can be general processor, digital signal processor (full name in English: digital signal processing, English abbreviation: DSP), specific integrated circuit (full name in English: Application Specific Integrated Circuit, English abbreviation: ASIC), ready-made programmable gate array (full name in English: Field-Programmable Gate Array, English contracting Write: FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented Or disclosed each method, step and logic diagram in the execution embodiment of the present invention.General processor can be microprocessor Or the processor is also possible to any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be with Be embodied directly in hardware decoding processor and execute completion, or in decoding processor hardware and software module combination executed At.Software module can be located at random access memory, and flash memory, read-only memory, programmable read only memory or electrically-erasable can In the storage medium of this fields such as programmable memory, register maturation.The storage medium is located at memory 1204, processor 1203 The step of reading the information in memory 1204, completing the above method in conjunction with its hardware.

Wherein, processor 1203, for executing the transmission method for the D2D communication link that aforementioned first terminal side is realized.Tool Body, processor 1203 can be used for executing following steps:

Receive the hybrid automatic repeat-request HARQ feedback resource pool for D2D communication link of base station broadcast, described the Establishing between one terminal and second terminal has the D2D communication link；

The HARQ feedback result that the second terminal is sent is received according to the HARQ feedback resource pool received.

In some embodiments of the invention, processor 1203 is also used to execute following steps:

Corresponding group of mark of cooperative groups, the first terminal are in institute where receiving the first terminal of the base station broadcast State corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups in cooperative groups.

In some embodiments of the invention, processor 1203 is specifically used for executing following steps:

The HARQ feedback resource that the second terminal uses, institute are determined according to HARQ index and the HARQ feedback resource pool Stating HARQ index includes: corresponding group of mark of cooperative groups and the second terminal where the first terminal in the cooperative groups Interior corresponding second terminal mark；

The HARQ feedback result that the second terminal is sent is received in the HARQ feedback resource that the second terminal uses.

Determine the second terminal for D2D communication link according to the HARQ index and the HARQ feedback resource pool The resource block RB resource of HARQ feedback, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or,

Determine the second terminal for D2D communication link according to the HARQ index and the HARQ feedback resource pool The RB resource of HARQ feedback, and the superposition orthogonal code OCC sequence resources of the HARQ feedback for D2D communication link；Or,

Determine the second terminal for D2D communication link according to the HARQ index and the HARQ feedback resource pool The RB resource of HARQ feedback, the cyclic shift resource of the HARQ feedback for D2D communication link, and for D2D communication link The OCC sequence resources of HARQ feedback；

Next another terminal provided in an embodiment of the present invention is introduced, which is specially second terminal, please refers to figure Shown in 13, terminal 1300 includes:

Receiver 1301, transmitter 1302, processor 1303 and (the wherein processor in terminal 1300 of memory 1304 1303 quantity can be one or more, take a processor as an example in Figure 13).In some embodiments of the invention, it receives Device 1301, transmitter 1302, processor 1303 and memory 1304 can be connected by bus or other means, wherein Tu13Zhong For being connected by bus.

The method that the embodiments of the present invention disclose can be applied in processor 1303, or real by processor 1303 It is existing.Processor 1303 can be a kind of IC chip, the processing capacity with signal.During realization, the above method Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1303 or software form.Above-mentioned Processor 1303 can be general processor, digital signal processor (full name in English: digital signal processing, English abbreviation: DSP), specific integrated circuit (full name in English: Application Specific Integrated Circuit, English abbreviation: ASIC), ready-made programmable gate array (full name in English: Field-Programmable Gate Array, English contracting Write: FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented Or disclosed each method, step and logic diagram in the execution embodiment of the present invention.General processor can be microprocessor Or the processor is also possible to any conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be with Be embodied directly in hardware decoding processor and execute completion, or in decoding processor hardware and software module combination executed At.Software module can be located at random access memory, and flash memory, read-only memory, programmable read only memory or electrically-erasable can In the storage medium of this fields such as programmable memory, register maturation.The storage medium is located at memory 1304, processor 1303 The step of reading the information in memory 1304, completing the above method in conjunction with its hardware.

Wherein, processor 1303, for executing the transmission method for the D2D communication link that aforementioned second terminal side is realized.Tool Body, processor 1303 can be used for executing following steps:

Receive the hybrid automatic repeat-request HARQ feedback resource pool for D2D communication link of base station broadcast, described the Establishing between two terminals and first terminal has the D2D communication link；

HARQ feedback result is sent to the first terminal using the HARQ feedback resource pool.

In some embodiments of the invention, processor 1303 is also used to execute following steps:

Corresponding group of mark of cooperative groups, the first terminal are in the association where receiving the second terminal of base station broadcast Organize interior corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups.

In some embodiments of the invention, processor 1303 is specifically used for executing following steps:

In addition it should be noted that, the apparatus embodiments described above are merely exemplary, wherein described as separation The unit of part description may or may not be physically separated, component shown as a unit can be or It can not be physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to reality Border needs to select some or all of the modules therein to achieve the purpose of the solution of this embodiment.In addition, provided by the invention In Installation practice attached drawing, the connection relationship between module indicates there is communication connection between them, specifically can be implemented as one Item or a plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can It understands and implements.

Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow Help software that the mode of required common hardware is added to realize, naturally it is also possible to by specialized hardware include specific integrated circuit, specially It is realized with CPU, private memory, special components and parts etc..Under normal circumstances, all functions of being completed by computer program are ok It is easily realized with corresponding hardware, moreover, being used to realize that the specific hardware structure of same function is also possible to a variety of more Sample, such as analog circuit, digital circuit or special circuit etc..But software program is real in situations more for the purpose of the present invention It is now more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words makes the prior art The part of contribution can be embodied in the form of software products, which is stored in the storage medium that can be read In, such as the floppy disk of computer, USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory Device (RAM, Random Access Memory), magnetic or disk etc., including some instructions are with so that a computer is set Standby (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.

In conclusion the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to upper Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to upper Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims

1. a kind of transmission method of equipment room D2D communication link characterized by comprising

Base station is that the first terminal for being linked into the base station and second terminal are configured to the mixed automatic retransfer of D2D communication link HARQ feedback resource pool is requested, establishing between the first terminal and the second terminal has the D2D communication link；

2. the method according to claim 1, wherein the HARQ feedback resource pool is logical for D2D for determining Believe the HARQ feedback resource of link, the HARQ feedback resource includes: the resource block RB for the HARQ feedback of D2D communication link Resource, the RB resource are specially to originate RB, terminate RB and the RB total number for HARQ feedback.

3. according to the method described in claim 2, it is characterized in that, the HARQ feedback resource for D2D communication link and Data transmission resources for D2D communication link are frequency division multiplexings.

4. according to claim 1 to method described in any one of 3 claims, which is characterized in that the method also includes:

When the first terminal and the second terminal belong to the same cooperative groups, the base station is the first terminal and institute It states second terminal and distributes described corresponding group of mark of cooperative groups, and the distribution first terminal is corresponding in the cooperative groups First terminal mark and the second terminal corresponding second terminal mark in the cooperative groups；

The base station is to the first terminal and the second terminal broadcast described group of mark, the first terminal identifies, described Second terminal mark.

5. a kind of transmission method of equipment room D2D communication link characterized by comprising

First terminal receives the hybrid automatic repeat-request HARQ feedback resource pool for D2D communication link of base station broadcast, institute It states to establish between first terminal and second terminal and has the D2D communication link；

The first terminal receives the HARQ feedback that the second terminal is sent according to the HARQ feedback resource pool received As a result.

6. according to the method described in claim 5, it is characterized in that, the method also includes:

Corresponding group of mark of cooperative groups, described first where the first terminal receives the first terminal of the base station broadcast Terminal corresponding first terminal mark and the second terminal corresponding second end in the cooperative groups in the cooperative groups End mark.

7. according to the method described in claim 6, it is characterized in that, the first terminal is according to the HARQ feedback received Resource pool receives the HARQ feedback result that the second terminal is sent, comprising:

The first terminal is anti-according to the HARQ that HARQ index and the HARQ feedback resource pool determine that the second terminal uses Resource is presented, the HARQ index includes: corresponding group of mark of cooperative groups and the second terminal where the first terminal in institute State corresponding second terminal mark in cooperative groups；

The first terminal receives the HARQ that the second terminal is sent in the HARQ feedback resource that the second terminal uses Feedback result.

8. the method according to the description of claim 7 is characterized in that the first terminal is anti-according to HARQ index and the HARQ Feedback resource pool determines the HARQ feedback resource that the second terminal uses, comprising:

The first terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the resource block RB resource of the HARQ feedback of link, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or,

The first terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the RB resource of the HARQ feedback of link, and the superposition orthogonal code OCC sequence resources of the HARQ feedback for D2D communication link； Or,

The first terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the RB resource of the HARQ feedback of link, the cyclic shift resource of the HARQ feedback for D2D communication link, and leads to for D2D Believe the OCC sequence resources of the HARQ feedback of link；

9. a kind of transmission method of equipment room D2D communication link characterized by comprising

Second terminal receives the hybrid automatic repeat-request HARQ feedback resource pool for D2D communication link of base station broadcast, institute It states to establish between second terminal and first terminal and has the D2D communication link；

10. according to the method described in claim 9, it is characterized in that, the method also includes:

Corresponding group of mark of cooperative groups, the first terminal where the second terminal receives the second terminal of base station broadcast Corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups in the cooperative groups Know.

11. according to the method described in claim 10, it is characterized in that, the second terminal using the HARQ feedback resource to The first terminal sends HARQ feedback result, comprising:

The second terminal is anti-according to the HARQ that HARQ index and the HARQ feedback resource pool determine that the second terminal uses Resource is presented, the group mark and the second terminal that the HARQ index includes: cooperative groups where the second terminal are in the association Make the terminal iidentification in group；

The second terminal is sent out in the HARQ feedback resource that the second terminal decided uses to the first terminal Send HARQ feedback result.

12. according to the method for claim 11, which is characterized in that the second terminal is according to HARQ index and the HARQ Feedback resources pond determines the HARQ feedback resource that the second terminal uses, comprising:

The second terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the resource block RB resource of the HARQ feedback of link, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or,

The second terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the RB resource of the HARQ feedback of link, and the superposition orthogonal code OCC sequence resources of the HARQ feedback for D2D communication link； Or,

The second terminal determines that the second terminal is logical for D2D according to the HARQ index and the HARQ feedback resource pool Believe the RB resource of the HARQ feedback of link, the cyclic shift resource of the HARQ feedback for D2D communication link, and leads to for D2D Believe the OCC sequence resources of the HARQ feedback of link；

13. a kind of base station characterized by comprising configuration module and broadcast module, wherein

The configuration module, for be linked into the base station first terminal and second terminal be configured to D2D communication link Hybrid automatic repeat-request HARQ feedback resource pool, between the first terminal and the second terminal establish have the D2D Communication link；

14. base station according to claim 13, which is characterized in that the HARQ feedback resource pool is used for D2D for determining The HARQ feedback resource of communication link, the HARQ feedback resource include: the resource block for the HARQ feedback of D2D communication link RB resource, the RB resource are specially to originate RB, terminate RB and the RB total number for HARQ feedback.

15. base station according to claim 14, which is characterized in that the HARQ feedback resource for D2D communication link It is frequency division multiplexing with the data transmission resources for D2D communication link.

16. base station described in any one of 3 to 15 according to claim 1, which is characterized in that when the first terminal and described When two terminals belong to the same cooperative groups, the configuration module is also used to distribute for the first terminal and the second terminal Corresponding group of mark of the cooperative groups, and the distribution first terminal corresponding first terminal mark in the cooperative groups, Corresponding second terminal identifies in the cooperative groups with the second terminal；

The broadcast module is also used to broadcast described group of mark, described first eventually to the first terminal and the second terminal End mark, second terminal mark.

17. a kind of terminal, which is characterized in that the terminal is specially first terminal, the first terminal, comprising: mixing is automatic Retransmission request HARQ feedback resource pool receiving module and HARQ feedback result receiving module, wherein

The HARQ feedback resource pool receiving module, the HARQ feedback for D2D communication link for receiving base station broadcast provide Source pond；

The HARQ feedback result receiving module, for receiving described second eventually according to the HARQ feedback resource pool received Hold the HARQ feedback result sent.

18. terminal according to claim 17, which is characterized in that the first terminal, further includes: terminal iidentification receives mould Block, corresponding group of mark of cooperative groups, the first terminal are in institute where the first terminal for receiving the base station broadcast State corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups in cooperative groups.

19. terminal according to claim 18, which is characterized in that the HARQ feedback result receiving module includes: HARQ Feedback resources determine submodule and HARQ feedback result receiving submodule, wherein

The HARQ feedback resource determines submodule, for determining described according to HARQ index and the HARQ feedback resource pool The HARQ feedback resource that two terminals use, the HARQ index include: corresponding group of mark of cooperative groups where the first terminal, Corresponding second terminal identifies in the cooperative groups with the second terminal；

The HARQ feedback result receiving submodule, described in being received in the HARQ feedback resource that the second terminal uses The HARQ feedback result that second terminal is sent.

20. terminal according to claim 19, which is characterized in that the HARQ feedback resource determines submodule, specific to use According to the HARQ index and the HARQ feedback resource pool determine the second terminal for D2D communication link HARQ it is anti- The resource block RB resource of feedback, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or, according to the HARQ rope Draw and determine RB resource of the second terminal for the HARQ feedback of D2D communication link with the HARQ feedback resource pool, and uses In the superposition orthogonal code OCC sequence resources of the HARQ feedback of D2D communication link；Or, according to the HARQ index and the HARQ Feedback resources pond determines RB resource of the second terminal for the HARQ feedback of D2D communication link, for D2D communication link The cyclic shift resource of HARQ feedback, and the OCC sequence resources of the HARQ feedback for D2D communication link；

21. a kind of terminal, which is characterized in that the terminal is specially second terminal, the second terminal, comprising: mixing is automatic Retransmission request HARQ feedback resource pool receiving module and HARQ feedback result sending module, wherein

The HARQ feedback result sending module, for sending HARQ to the first terminal using the HARQ feedback resource pool Feedback result.

22. terminal according to claim 21, which is characterized in that the second terminal, further includes: terminal iidentification receives mould Block, corresponding group of mark of cooperative groups, the first terminal are in the association where the second terminal for receiving base station broadcast Organize interior corresponding first terminal mark and the second terminal corresponding second terminal mark in the cooperative groups.

23. terminal according to claim 22, which is characterized in that the HARQ feedback result sending module includes: HARQ Feedback resources determine submodule and HARQ feedback result sending submodule, wherein

The HARQ feedback resource determines submodule, for determining described according to HARQ index and the HARQ feedback resource pool The HARQ feedback resource that two terminals use, the HARQ index include: group mark and the institute of cooperative groups where the second terminal State terminal iidentification of the second terminal in the cooperative groups；

The HARQ feedback result sending submodule, the HARQ feedback resource for being used in the second terminal decided On to the first terminal send HARQ feedback result.

24. terminal according to claim 23, which is characterized in that the HARQ feedback result sending submodule is specific to use According to the HARQ index and the HARQ feedback resource pool determine the second terminal for D2D communication link HARQ it is anti- The resource block RB resource of feedback, and the cyclic shift resource of the HARQ feedback for D2D communication link；Or, according to the HARQ rope Draw and determine RB resource of the second terminal for the HARQ feedback of D2D communication link with the HARQ feedback resource pool, and uses In the superposition orthogonal code OCC sequence resources of the HARQ feedback of D2D communication link；Or, according to the HARQ index and the HARQ Feedback resources pond determines RB resource of the second terminal for the HARQ feedback of D2D communication link, for D2D communication link The cyclic shift resource of HARQ feedback, and the OCC sequence resources of the HARQ feedback for D2D communication link；