CN103108405B

CN103108405B - Wireless communications method and system

Info

Publication number: CN103108405B
Application number: CN201110362021.4A
Authority: CN
Inventors: 吴栓栓; 袁弋非; 戴博; 梁枫; 李儒岳; 毕峰; 杨瑾; 袁明
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2017-09-08
Anticipated expiration: 2031-11-15
Also published as: CN103108405A

Abstract

The invention discloses a kind of wireless communications method and system, wherein, this method includes：First user equipment receives the first configuration information that network node is sent, wherein, the first configuration information includes：The configuration parameter of reference signal；First user device responsive sends reference signal in the first configuration information；Second user equipment detects reference signal.The present invention is solved can not realize that business datum forwards the technical problem that directly can be just transmitted between the subscriber devices without base station in the prior art, so as to reach the technique effect for the data transfer pressure for saving radio spectrum resources and reduction core net.

Description

Wireless communications method and system

Technical field

The present invention relates to the communications field, in particular to a kind of wireless communications method and system.

Background technology

Cellular communication system is due to realizing the multiplexing to limited spectrum resources, so that wireless communication technology is obtained Flourish.In the cellular system, when have between two user equipmenies (User Equipment, referred to as UE) business need biography When defeated, user equipment 1 (UE1) arrives the business datum of user equipment 2 (UE2), can be first by air interface transmission to base station 1, base station 1 Again by core net by the user data transmission to base station 2, base station 2 again by above-mentioned business datum by air interface transmission to UE2. UE2 to UE1 business datum is transmitted using similar handling process.As shown in figure 1, when UE1 and UE2 is located at same honeybee During nest cell, although base station 1 and base station 2 are same websites, however, a data transfer still can consume two parts of wireless frequency spectrums Resource, and the forwarding that user data still can be Jing Guo core net, cause unnecessary system loss.

As can be seen here, when user equipment 1 and user equipment 2 nearer apart (such as positioned at same cell), above-mentioned honeybee Nest communication means is apparently not optimal communication mode.And in fact, with the variation of mobile communication business, for example, social Application, the extensive use of e-payment of network in a wireless communication system etc. so that business is transmitted between user closely Demand is growing.Therefore, the communication pattern between device-to-device (Device-to-Device, referred to as D2D) is also increasingly Receive significant attention.So-called D2D, as shown in Fig. 2 referring to that business datum is forwarded without base station, but is directly used by source Family equipment is by air interface transmission to target UE.This communication pattern is different from the communication pattern of conventional cellular systems, right For the user of short-range communication, D2D not only saves radio spectrum resources, and reduces the data transfer pressure of core net Power.

For D2D communications, business datum is directly to be transmitted between UE, therefore its communication mode can not edge With traditional cellular communication.And for D2D communication modes, then exist different from cellular communication it is new the problem of need solution Certainly, for example the companion between equipment has found, synchronous, channel measurement etc..For example, in Long Term Evolution (Long Term Evolution, referred to as LTE) in/senior long term evolution LTE-A (LTE-Advanced) system, not yet carry regarding to the issue above Go out effective solution.

The content of the invention

The invention provides a kind of wireless communications method and system, at least to solve that business number can not be realized in the prior art The technical problem that directly can be just transmitted between the subscriber devices according to being forwarded without base station.

According to an aspect of the invention, there is provided a kind of wireless communications method, including：First user equipment receives network The first configuration information that node is sent, wherein, the first configuration information includes：The configuration parameter of reference signal；First user equipment Reference signal is sent in response to the first configuration information；Second user equipment detects reference signal.

It is preferred that, after second user equipment detection reference signal, the wireless communications method includes：Second user equipment According to testing result and/or reference signal generation feedback message；Second user equipment sends feedback message.

It is preferred that, the step of second user equipment generates feedback message according to testing result and/or reference signal includes：The Two user equipmenies judge whether synchronous with the first user equipment according to testing result；If second user equipment is with first User equipment is synchronous, then second user equipment generates feedback message according to testing result and/or reference signal.

It is preferred that, second user equipment is sent after feedback message, including at least one of：First user equipment is received The feedback message that second user equipment is sent, and determined according to feedback message to timing during second user equipment transmission data； Or network node receives feedback message, and judge whether second user equipment is same with the first user equipment according to feedback message Step, if synchronous, the first user equipment, first are given in some or all of information forwarding in network node feedback message User equipment receives some or all of information in the feedback message that network node is sent, and is determined according to feedback message to the Two user equipmenies send timing during data；Or network node receives feedback message, and the second use is judged according to feedback message Whether family equipment is synchronous with the first user equipment, if synchronous, network node triggers the first user equipment and second user Equipment carries out data transmission.

It is preferred that, feedback message includes at least one of：Synchronizing information report and/or channel status information reports, its In, channel condition information includes at least one of：Channel quality indicator (CQI), pre-coding matrix index PMI, order instruction RI；Together Walking information includes at least one of：Sync id, for indicating whether to find D2D communication companions and/or for representing synchronous Whether succeed；Reference signal is indexed, for identifying reference signal；Timing advance parameter, sends for adjusting the first user equipment Timing during data.

It is preferred that, the step of second user equipment detects reference signal includes：Second user equipment receives network node hair The second configuration information sent, wherein, the second configuration information includes the configuration parameter of reference signal, and/or, the second configuration information bag Triggering signaling is included, triggering signaling is used to trigger second user equipment detection reference signal；Second user equipment is according to the second configuration The instruction detection reference signal of information.

It is preferred that, configuration parameter includes at least one of：Send the port number information of reference signal, resource distribution letter Breath, subframe configuration information, power configuration information, bandwidth, duration, frequency hopping indicates that frequency domain original position is indicated, configures rope Draw, transmission is indicated, cyclic shift, preamble index, mask index.

It is preferred that, second user equipment receive network node send the second configuration information the step of include it is following at least it One：Second user equipment receives the second configuration information that network node is sent by the forms of broadcasting, wherein, the second configuration information bag It is contained in system information block SIB；Or second user equipment receive network node by dedicated signaling send second match somebody with somebody confidence Breath, wherein, the second configuration information is carried in dedicated RRC signaling；Or second user equipment receives network node and passes through paging The second configuration information that message is sent, wherein, the second configuration information is included in beep-page message, and beep-page message is used for equipment to setting The paging of standby communication；Or second user equipment receives the second configuration information that network node is sent by physical layer signaling, its In, physical layer signaling is included in Downlink Control Information DCI format, for triggering second user equipment detection reference signal.

It is preferred that, before the first user equipment receives the first configuration information that network node is sent, the side wireless communication Method also includes：Network node obtains the first relative position and second user equipment between the first user equipment and network node The second relative position between network node；Network node is calculated according to the first relative position and the second relative position obtains the Third phase between one user equipment and second user equipment is to position；When third phase is less than predetermined threshold to position, network Node triggers the first user equipment and receives the first configuration information that network node is sent.

It is preferred that, the first configuration information also includes：Signaling is triggered, wherein, triggering signaling is used to trigger the first user equipment Send reference signal.

It is preferred that, reference signal includes at least one of：Channel measurement reference signal CSI-RS, detection reference signal SRS, around uplink demodulation reference signal, synchronizing signal SS, random access channel preamble sequence, special synchronous signal.

According to another aspect of the present invention there is provided a kind of wireless communication system, including：Network node, the first user set Standby and second user equipment, wherein, network node includes：First transmitting element, matches somebody with somebody for sending first to the first user equipment Confidence ceases, wherein, the first configuration information includes：The configuration parameter of reference signal；First user equipment includes：First receives single Member, the first configuration information for receiving network node transmission；Second transmitting element, for being sent in response to the first configuration information Reference signal；Second user equipment includes：Detection unit, for detecting reference signal.

It is preferred that, second user equipment also includes：First generation unit, for the testing result according to detection unit and/ Or reference signal generation feedback message；3rd transmitting element, for sending feedback message.

It is preferred that, the first generation unit includes：Judge module, for being judged whether to use with first according to testing result Family equipment is synchronous；Generation module, for when second user equipment is synchronous with the first user equipment according to testing result and/ Or reference signal generation feedback message.

It is preferred that, detection unit includes：Receiving module, the second configuration information for receiving network node transmission, wherein, Second configuration information includes：The configuration parameter of reference signal, and/or, the second configuration information includes triggering signaling, and triggering signaling is used In triggering second user equipment detection reference signal；Detection module, for according to the instruction of the second configuration information detection reference letter Number.

It is preferred that, network node also includes：Acquiring unit, for obtaining the between the first user equipment and network node The second relative position between one relative position and second user equipment and network node；Computing unit, for according to first Relative position and the second relative position, which are calculated, obtains third phase between the first user equipment and second user equipment to position；Sentence Disconnected unit, for judging whether third phase is less than predetermined threshold to position, when third phase is less than predetermined threshold to position, triggering First user equipment receives the first configuration information that network node is sent.

In the present invention, the first configuration information sent by the first user equipment according to network node is sent with reference to letter Number, second user equipment detects the reference signal, and solving can not realize that business datum is forwarded without base station in the prior art The technical problem that directly can be just transmitted between the subscriber devices, radio spectrum resources and reduction are saved so as to reach The technique effect of the data transfer pressure of core net, has further reached and has not dramatically increased the feelings of Terminal Design complexity Companion's discovery, synchronization and the channel measurement of D2D communications are realized under condition.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the present invention program, constitutes the part of the application, The schematic description and description of the present invention is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing In：

Fig. 1 is cellular communication schematic diagram when being located at same base station cell according to the UE of prior art；

Fig. 2 is a kind of preferred D2D communication system schematic diagrames according to embodiments of the present invention；

Fig. 3 is a kind of preferred structure block diagram of wireless communication system according to embodiments of the present invention；

Fig. 4 is another preferred structure block diagram of wireless communication system according to embodiments of the present invention；

Fig. 5 is another preferred structure block diagram of wireless communication system according to embodiments of the present invention；

Fig. 6 is another preferred structure block diagram of wireless communication system according to embodiments of the present invention；

Fig. 7 is another preferred structure block diagram of wireless communication system according to embodiments of the present invention；

Fig. 8 is a kind of preferred flow charts of wireless communications method according to embodiments of the present invention；

Fig. 9 is another preferred flow charts of wireless communications method according to embodiments of the present invention；

Figure 10 is another preferred flow charts of wireless communications method according to embodiments of the present invention；

Figure 11 is another preferred flow charts of wireless communications method according to embodiments of the present invention；

Figure 12 is LTE/LTE-A system wireless frame structure schematic diagrames according to embodiments of the present invention；

Figure 13 is LTE/LTE-A system physical resource structures schematic diagrames according to embodiments of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

In each preferred embodiment of the invention, network node includes but is not limited to one below：Base station, node B (Node B), node B (evolved Node B, referred to as eNB), the relay station (Relay with radio resource management function of evolution Node, referred to as Relay), the access node in local area network (Local Area Network, referred to as LAN), function more For powerful user equipment, (such as user equipment with relay function, the i.e. user equipment can relay other in a network The data of user equipment), D2D communicates special server etc.；User equipment includes but is not limited to：LTE/LTE-A UE, media Server (media server).

Embodiment 1

As shown in figure 3, present embodiments providing a kind of preferred wireless communication system, the system includes：Network node 302nd, the first user equipment 304 and second user equipment 306, wherein, the network node 302 includes：First transmitting element 3022, for sending the first configuration information to first user equipment, wherein, first configuration information includes：With reference to letter Number configuration parameter；First user equipment 304 includes：First receiving unit 3042, for receiving the network node hair First configuration information sent；Second transmitting element 3044, for sending the reference in response to first configuration information Signal；The second user equipment 306 includes：Detection unit 3062, for detecting the reference signal, it is preferred that with reference to letter Number be used for it is following operation at least one of：Companion's discovery, synchronization, channel measurement between user equipment etc..

In above preferred embodiment, the first configuration information sent by the first user equipment according to network node is sent Reference signal, second user equipment detects the reference signal, and solving can not realize business datum without base in the prior art Stand the technical problem that directly can just be transmitted between the subscriber devices of forwarding, thus reached saving radio spectrum resources and Reduce the technique effect that core network data transmits pressure.

In a preferred embodiment of the invention, as shown in figure 4, second user equipment 306 also includes：First generation is single Member 402, for the testing result according to detection unit 3062 and/or reference signal generation feedback message；3rd sends single Member 404, for sending the feedback message.

In a preferred embodiment of the invention, as shown in figure 5, the first generation unit 402 includes：Judge module 502, For being judged whether to find D2D communication companions and/or whether same with first user equipment 304 according to testing result Step；Generation module 504, for when the second user equipment 306 is synchronous with first user equipment 304 according to institute State testing result and/or reference signal generation feedback message.Wherein, D2D communications companion refers to the other user of D2D communications Equipment, in the present embodiment, the D2D communications companion of second user equipment is then the first user equipment.

In the preferred embodiment, second user equipment is judging to have been found that D2D communication companions and/or with the One user equipment just generates and sends feedback message in the case of realizing synchronization, so as to reduce unnecessary overhead.

In a preferred embodiment of the invention, reference signal includes but is not limited at least one of：Channel measurement Reference signal (Channel State Information Reference Signal, referred to as CSI-RS), detection is with reference to letter Number (SoundingReference Signal, referred to as SRS), around uplink demodulation reference signal, synchronizing signal (Synchronization Signal, referred to as SS), and RACH (Random Access Channel, referred to as RACH) targeting sequencing (preamble), or be the special synchronous signal of D2D communication schemes.

In a preferred embodiment of the invention, feedback message includes at least one of：Synchronizing information report and/or Channel status information reports, wherein, channel condition information includes at least one of：Channel quality indicates (Channel Quality Indication, referred to as CQI), pre-coding matrix index instruction (Precoding Matrix Indicator, Referred to as PMI), order instruction (RankIndication, referred to as RI)；Synchronizing information includes at least one of：For representing Whether find D2D communication companions and/or for represent it is synchronous whether successful sync id, the reference for identifying reference signal Signal is indexed, the timing advance parameter for representing launch time adjustment amount.It is preferred that, synchronizing information is reported for the first user The radio frame boundaries of data transfer and/or the nothing of data receiver are mutually found and/or determined between equipment and second user equipment Line frame boundaries；Channel status information reports are used for the channel conditions for obtaining Radio Link between user equipment.

For example, when the reference signal is used for channel measurement, second user equipment detects the reference signal, so that Generation includes the feedback message of the channel status information reports between the first user equipment and second user；When reference signal is same When existing signal and/or the synchronizing signal of occurring together, second user equipment detects the reference signal, so as to generate comprising the first user equipment The feedback message of synchronizing information report between second user equipment.

In a preferred embodiment of the invention, second user equipment 306 is sent after feedback message, including following step It is at least one rapid：

1) the first user equipment 304 receives the feedback message that the second user equipment 306 is sent, and according to described Feedback message is determined to the timing during second user equipment 306 transmission data；

2) network node 302 receives the feedback message, and judges the second user equipment according to the feedback message Whether 306 is synchronous with first user equipment 304, if synchronous, network node 302 by the part in feedback message or First user equipment 304 is given in the forwarding of person's full detail, and first user equipment 304 receives the network node 302 Some or all of information in the feedback message sent, and determined according to the feedback message to set to the second user Standby 306 send timing during data；

3) network node 302 receives the feedback message, and judges the second user equipment according to the feedback message Whether 306 is synchronous with first user equipment 304, if synchronous, the network node 302 triggers the first user equipment 304 carry out data transmission with the second user equipment 304.

In a preferred embodiment of the invention, as shown in fig. 6, detection unit 3062 includes：Receiving module 602, is used In the second configuration information for receiving the network node transmission, wherein, second configuration information includes：The reference signal Configuration parameter, and/or, the triggering signaling of the reference signal is detected for triggering the second user equipment；Detection module 604, for detecting the reference signal according to the instruction of second configuration information.

In a preferred embodiment of the invention, configuration parameter includes at least one of：Send the end of reference signal Mouth number information, resource allocation information, subframe configuration information, power configuration information, bandwidth, duration, frequency hopping indicates that frequency domain rises Beginning position instruction, configuration index, transmission indicates that cyclic shift, preamble index, mask is indexed.

Addressed before the present invention in subsequent descriptions, if find that D2D communications companion can be with by whether detect described Reference signal is represented, is detected the reference signal and is then represented to find D2D communication companions.

In a preferred embodiment of the invention, network node can pass through one of following four mode or four kinds of sides Any combination in formula sends the second configuration information to second user equipment：

1) network node sends the second configuration information by the forms of broadcasting, wherein, the second configuration information is believed included in system Cease in block SIB (System Information Block, referred to as SIB)；Or

2) network node sends the second configuration information by dedicated signaling, wherein, the second configuration information is carried on special RRC In signaling；Or

3) network node sends the second configuration information by beep-page message, wherein, the second configuration information disappears included in paging In breath, beep-page message is used for the paging that device-to-device communicates；

4) network node sends the triggering signaling in the second configuration information by physical layer signaling, wherein, physical layer signaling Included in Downlink Control Information (Downlink Control Information, abbreviation DCI) form, used for triggering second Family equipment detects the reference signal.

In a preferred embodiment of the invention, as shown in fig. 7, network node 302 also includes：Acquiring unit 702, is used In obtain the first relative position and the second user equipment between first user equipment and the network node with The second relative position between the network node；Computing unit 704, for according to first relative position and described second Relative position, which is calculated, obtains third phase between first user equipment and the second user equipment to position；Judging unit 706, for judging whether the third phase is less than predetermined threshold to position, when the third phase is less than the predetermined threshold to position During value, trigger first user equipment and receive first configuration information that the network node is sent.

Embodiment 2

Based on the preferred wireless communication system shown in Fig. 3-7, present invention also offers a kind of preferred side wireless communication Method, as shown in figure 8, the specific steps of the wireless communications method flow include：

S802：First user equipment receives the first configuration information that network node is sent, wherein, the first configuration information bag Include：The configuration parameter of reference signal；

S804：First user device responsive sends reference signal in the first configuration information；

S806：Second user equipment detects reference signal, it is preferred that reference signal is used for same occurring together between user equipment Existing, synchronization, channel measurement etc..

In above-mentioned preferred embodiment, the first configuration information sent by the first user equipment according to network node is sent out Send reference signal, second user equipment detects the reference signal, solve can not realize in the prior art business datum without The technical problem that base station forwarding directly can be just transmitted between the subscriber devices, so as to reach saving radio spectrum resources With the technique effect of the data transfer pressure of reduction core net.

In a preferred embodiment of the invention, after second user equipment detection reference signal, side wireless communication Method includes：Second user equipment generates feedback message according to testing result and/or reference signal；Second user equipment sends feedback Message.

In a preferred embodiment of the invention, second user equipment is generated according to testing result and/or reference signal The step of feedback message, includes：Whether second user equipment judge whether to find D2D communication companions and/or according to testing result Through synchronous with the first user equipment；If second user equipment have been found that D2D communication companion and/or with the first user equipment Synchronous, then second user equipment generates feedback message according to testing result and/or reference signal.In the preferred embodiment, Second user equipment is in the case where judging to have been found that the first user equipment and/or realized synchronization with the first user equipment Feedback message is just generated and sent, so as to reduce unnecessary overhead.

In a preferred embodiment of the invention, reference signal includes but is not limited at least one of：Channel measurement Before reference signal CSI-RS, detection reference signal SRS, around uplink demodulation reference signal, synchronizing signal SS, RACH Lead sequence, special synchronous signal.

In a preferred embodiment of the invention, feedback message includes at least one of：Synchronizing information report and/or Channel status information reports, wherein, channel condition information includes at least one of：Channel quality indicator (CQI), pre-coding matrix Index PMI, order instruction RI；Synchronizing information includes at least one of：Sync id, for indicating whether to find that D2D communications are same Whether succeed with and/or for representing synchronous；Reference signal is indexed, for identifying the reference signal；Timing advance parameter, is used Timing when the first user equipment transmission data are adjusted.It is preferred that, synchronizing information report for the first user equipment and The radio frame boundaries of data transfer and/or the radio frames side of data receiver are mutually found and/or determined between second user equipment Boundary；Channel status information reports are used for the channel conditions for obtaining Radio Link between user equipment.

For example, when reference signal is channel measurement reference signal, second user equipment detects that the reference is believed Number, so as to generate the feedback message for including the channel status information reports between the first user equipment and second user；Work as reference When signal is companion's discovery and/or synchronizing signal, second user equipment detects the reference signal, so as to generate comprising the first user The feedback message of synchronizing information report between equipment and second user equipment.

In a preferred embodiment of the invention, second user equipment is sent after feedback message, is comprised the following steps At least one：

1) feedback message that the first user equipment reception as shown in Figure 9 second user equipment is sent, and according to The feedback message is determined to timing during second user equipment transmission data；

2) as shown in Figure 10, network node receives the feedback message, and judges described second according to the feedback message Whether user equipment is synchronous with first user equipment, if synchronous, in feedback message described in the network node The forwarding of some or all of information give first user equipment, first user equipment receives the network node hair Some or all of information in the feedback message sent, and determined according to the feedback message to the second user equipment Send timing during data；

3) network node receives the feedback message, and whether judges the second user equipment according to the feedback message Synchronous with first user equipment, if synchronous, the network node triggers first user equipment and described the Two user equipmenies carry out data transmission.

In the preferred embodiment, the first user equipment is with second user equipment in the case where realizing synchronization, The feedback message of second user equipment transmission can directly be received, feedback information can also be received by network node and is sentenced Break, then feedback message is transmitted to the first user equipment or the first user equipment of direct triggering and enter line number with second user equipment According to transmission, so as to realize the transmission of data between the first user equipment and second user equipment.

In a preferred embodiment of the invention, the step of second user equipment detects reference signal is as shown in figure 11, Including：Second user equipment receives the second configuration information that network node is sent, wherein, the second configuration information includes reference signal Configuration parameter, and/or, the second configuration information include triggering signaling, the triggering signaling be used for trigger second user equipment inspection Survey reference signal；Second user equipment detects reference signal according to the instruction of the second configuration information.

In a preferred embodiment of the invention, network node can pass through one of following four mode or four kinds of sides Any combination of formula sends the second configuration information to second user equipment：

1) the second configuration information that network node is sent by the forms of broadcasting, wherein, the second configuration information is included in system In block of information SIB；Or

2) the second configuration information that network node is sent by dedicated signaling, wherein, the second configuration information is carried on special In RRC signaling；Or

3) the second configuration information that network node is sent by beep-page message, wherein, the second configuration information is included in paging In message, beep-page message is used for the paging that device-to-device communicates；

4) network node sends the triggering signaling in the second configuration information by physical layer signaling, wherein, physical layer signaling Included in Downlink Control Information DCI format, the reference signal is detected for triggering second user equipment.

In a preferred embodiment of the invention, receive network node transmission in the first user equipment first matches somebody with somebody confidence Before breath, in addition to：Network node obtains the first relative position and the second use between the first user equipment and network node The second relative position between family equipment and network node；Network node is calculated according to the first relative position and the second relative position The third phase between the first user equipment and second user equipment is obtained to position；When third phase is less than predetermined threshold to position When, network node triggers first user equipment and receives first configuration information that the network node is sent.

In a preferred embodiment of the invention, the first configuration information also includes：Signaling is triggered, wherein, trigger signaling Reference signal is sent for triggering the first user equipment.That is the first user equipment is obtained by the configuration signal of the first configuration information The configuration of reference signal, but only just send the reference signal after triggering signaling is received；Or, the triggering letter Order directly the first user equipment of triggering sends the reference signal.The triggering signaling may be embodied in DCI format, or comprising In beep-page message.

Embodiment 3

Wireless communications method and system according to embodiment 1-2, come the invention provides a kind of preferred embodiment Further the present invention is explained, it will be appreciated that the preferred embodiment is intended merely to the preferably description present invention, Do not constitute and the present invention is improperly limited.

With third generation partner program (3rd Generation in each preferred embodiment of the invention Partnership Project, referred to as 3GPP) Long Term Evolution (Long Term Evolution, referred to as LTE)/LTE-A (LTE-Advanced) system is introduced for background.LTE/LTE-A system down links are with OFDM Based on (Orthogonal Frequency DivisionMultiplexing, referred to as OFDM) technology, up-link is then adopted With SC-FDMA (Single carrier-FrequencyDivision Multiplexing Access) multi-access mode. In OFDM/SC-FDMA systems, when the communication resource is-form of frequency bidimensional.For example, as shown in figure 12, for LTE/LTE-A systems For system, the communication resource of uplink and downlink link is all to be divided with frame (frame) for unit on time orientation, each wireless Frame (radio frame) length is 10ms, and comprising the subframe (sub-frame) that 10 length are 1ms, each subframe includes two again Individual length is 0.5ms time slot (slot).

In frequency direction, the communication resource is that unit is divided with subcarrier (subcarrier), specifically in the communications, such as Shown in Figure 13, the least unit of frequency domain resource distribution is resource block (Resource Block, referred to as RB), correspondence physical resource A Physical Resource Block (Physical RB, referred to as PRB).One PRB includes 12 subcarriers in frequency domain, corresponding to when One time slot in domain.In each OFDM symbol the resource of one subcarrier of correspondence be referred to as resource unit (Resource Element, Referred to as RE).

LTE/LTE-A systems are synchronized before carrying out data transmission, it is necessary between user equipment and network node. It is synchronous to include time synchronized and Frequency Synchronization.Wherein, Frequency Synchronization is entered for obtaining the subcarrier of center frequency point, i.e. transmitting-receiving two-end Row alignment；Time synchronized is used to obtain radio frame boundaries, that is, ensures that radio frames are alignd in transmitting-receiving two-end.

It is worth noting that, in each of the invention preferred embodiment, using D2D communications be based on LTE/LTE-A systems as Example is illustrated, but does not constitute inappropriate limitation of the present invention.

Further, in LTE/LTE-A systems, the reference signal is preferably channel measurement reference signal (Channel StateInformation Reference Signal, referred to as CSI-RS), and/or detection reference signal (Sounding ReferenceSignal, referred to as SRS), and/or around uplink demodulation reference signal (Demodulation Reference ), and/or synchronizing signal (Synchronization Signal, referred to as SS), and/or RACH Signal (RandomAccess Channel, abbreviation RACH) leading (preamble) sequence, and/or special synchronous signal.The synchronization Signal can be master sync signal (Primary SS, referred to as PSS) and/or auxiliary synchronous signals (Secondary SS, referred to as SSS), wherein, special synchronous signal is the signal for being exclusively used in D2D communication synchronizations of system design.

Reference signal includes but is not limited to one below：Before CSI-RS, SRS, around uplink demodulation reference signal, RACH Lead, PSS/SSS signals, definition are new is used for synchronous and/or measurement DRS (Dedicated Reference Signal).

Below in conjunction with several specific examples, the method to the present invention is described in detail.

Example 1

In the preferred embodiment, illustrated exemplified by using LTE/LTE-A systems SRS as D2D system reference signals.

It is preferred that, include the step of wireless communications method：

S1：Network node sends the first configuration information to the first user equipment, wherein, the first configuration information is carried with reference to letter Number configuration parameter and/or triggering signaling；

S2：First user equipment sends reference signal according to the instruction of the first configuration information, it is preferable that when first with confidence When breath includes triggering signaling, the first user equipment only receives triggering signaling and just sends reference signal；

S3：Network node sends the second configuration information to second user equipment, and the second configuration information carries reference signal Configuration parameter and/or triggering signaling；

S4：Second user equipment detects reference signal according to the instruction of the second configuration information, it is preferable that when second with confidence When breath also includes triggering signaling, second user equipment only receives triggering signaling and just detects reference signal.

It is preferred that, in the preferred embodiment, the first configuration information continues to use SRS configuration sides during existing system cellular communication Method, so configuration information includes two parts：Common configuration parameter and specific configuration parameters.Wherein, common configuration parameter is for small It is identical for UE in area, is issued by the form of broadcast；Specific configuration parameters are UE special, pass through Radio Resource control System (Radio Resource Control, referred to as RRC) dedicated signaling is issued.

It is preferred that, the first configuration information can also further include：Signaling is triggered, the triggering signaling is used to trigger SRS transmission, i.e., configured after SRS emission parameter, the first user sets by foregoing common configuration parameter and specific configuration parameters It is standby only to receive after the triggering signaling, just send the SRS.It is preferred that, once triggering only can be sent once, Huo Zheyue Surely send m times, wherein, m is fixed integer, for example, agreement m=2.

It is preferred that, some or all of parameter in the second configuration information at least specific configuration parameters including foregoing SRS. Wherein, specific configuration parameters include：Transmission port number, bandwidth, duration, frequency hopping indicates that frequency domain original position is indicated, configuration Index, transmission comb is indicated and cyclic shift.

It is preferred that, the second configuration information can be sent by way of dedicated signaling, for example, network node is special by RRC The second configuration information is sent to second user equipment with signaling；Or, sent out by way of broadcasting (Broadcast) signaling Send, for example, the second configuration information is included in system information block (System Information Block, referred to as SIB), net Network node is sent with the forms of broadcasting, and multiple second user equipment all can obtain the first user equipment based on second configuration information SRS configuration parameters；Or, network node sends the second configuration information by the form of multicast (Multicast), has detection described The user equipment of reference signal demand can all receive the second configuration information of the multicast；Or, the second configuration information is included in and sought Exhale in message, beep-page message is used for the paging that device-to-device communicates, and second user equipment receives detection after beep-page message should Reference signal.

It is preferred that, second user equipment is detected after second configuration information, detects the SRS.

In presently preferred embodiment, the second configuration information further comprises triggering signaling.Second uses Family equipment is received after the SRS configuration informations in the second configuration information, and the SRS is not detected at once, and is only worked as and received Trigger after signaling, second user equipment just detects the SRS.It is preferred that, triggering signaling is physical layer signaling, for example, being included in Indicating bit in DCI format, or triggering signaling are included in beep-page message, i.e. second user equipment is matched somebody with somebody according to above-mentioned second Configuration parameter obtains the configuration information of the reference signal in confidence breath, but second user equipment is only matched somebody with somebody receiving second Confidence breath in triggering signaling when, just detect the first user equipment transmission reference signal.Specifically, it is assumed that connect in subframe n Receive triggering signaling, then first time of the second user equipment after subframe n+k is detected that the k is when transmitting the SRS Integer more than 0, for example, arrange k=4.It is preferred that, once triggering can be detected only once, or agreement is detected m times, wherein, m It is fixed integer, for example, arranges m=2.

Example 2

It is preferred that, include the step of equipment synchronous method：

S2：First user equipment sends the reference signal according to the instruction of first configuration information, it is preferable that When the first configuration information includes triggering signaling, the first user equipment only receives triggering signaling and just sends reference signal；

S3：Network node sends the second configuration information to second user equipment, wherein, the second configuration information is carried with reference to letter Number configuration parameter and/or triggering signaling；

S4：The second user equipment detects the reference signal according to the instruction of second configuration information, it is preferable that When the second configuration information also includes triggering signaling, second user equipment only receives triggering signaling and just detects reference signal.

It is preferred that, the configuration of reference signal is the limited a variety of of restriction.That is, (for example solidified by the way of arranging in advance In the protocol), the configuration of several (being more than or equal to a kind) reference signal is limited；First user equipment send reference signal be One kind in the reference signal configuration of restriction, second user equipment detects above-mentioned reference signal also according to the configuration of restriction.

For example, kind of the SRS configuration modes of the configuration mode of 8 kinds of reference signals, i.e., 8 are defined in agreement, each is matched somebody with somebody One index of mode correspondence is put, such as 0-7 represents different 8 kinds of SRS configuration modes.It is preferred that, it is every kind of configuration all define including But it is not limited to the value of one or more parameter in following parameter：Sending port number, frequency domain resource configuration, the son of reference signal Frame configuration, power configuration and sequence cyclic shift are indicated.

First configuration information indicates the index of reference signal configuration mode, and the first user equipment determines SRS's according to index Configuration concurrency send SRS；Or, it is preferred that the first configuration signal also includes triggering signaling, and the first user equipment is according to the first configuration Information determines that the configuration mode used is generated after SRS, and the first user equipment is just sent only after the triggering signaling is received SRS。

Or, the first configuration information only includes triggering signaling, and the first user equipment is received after the triggering signaling, in agreement A configuration index is selected at random or according to certain ad hoc rules in predetermined reference signal configuration mode, and according to selection Configuration index corresponding to configuration send SRS.

It is preferred that, the first configuration information is high-level signaling, for example RRC signaling, or MAC (Medium Access Control, medium access control, abbreviation MAC) signaling, such as MAC CE (Control Element, control element, referred to as CE)；It is preferred that, the first configuration information can also be physical layer signaling, for example, included in DCI format, wherein, above-mentioned 8 kinds Configuration mode is indicated using the information bit of 3 bits.Or, the first configuration information is included in beep-page message.

It is preferred that, if above-mentioned first configuration signal includes triggering signaling, triggering signaling is physical layer signaling, for example, wrap It is contained in DCI, the transmission reference signal is represented whether using 1 bit information position.

Equally, second configuration information indicates the index of reference signal configuration mode, and second user equipment is according to second The index that configuration information is indicated determines SRS configuration and detects SRS；Or, it is preferred that the second configuration signal, which includes triggering, to be believed Order, second user equipment is indicated to determine SRS configuration mode by aforementioned index, but second user equipment is only being received During the triggering signaling, just SRS is detected according to the configuration mode；

Or, the second configuration information only includes triggering signaling, and second user equipment is received after the triggering signaling, according to institute The reference signal configuration mode for stating restriction detects the SRS, if the detection is according to agreement predetermined one or individual dry matched somebody with somebody The mode of putting is detected, or configuration mode progress SRS detections predetermined for agreement one by one.

It is preferred that, the second configuration information is high-level signaling, for example RRC signaling, is carried in special RRC message, or It is MAC (Medium Access Control, medium access control, abbreviation MAC) signaling, for example, is carried on MAC CE (Control Element, control element, abbreviation CE), or beep-page message, are sent by beep-page message；It can also be thing Layer signaling is managed, for example, included in Downlink Control Information (Downlink Control Information, abbreviation DCI), its In, 8 kinds of above-mentioned configuration modes can use the information bit of 3 bits to be indicated.

It is preferred that, if above-mentioned second configuration signal includes triggering signaling, triggering signaling is physical layer signaling, for example, wrap It is contained in DCI, the detection reference signal is represented whether using 1 bit information position；Or, the triggering signaling is included in In beep-page message, second user equipment is received after beep-page message, is determined according to the triggering signaling transmitted in beep-page message Whether need to detect reference signal.

Example 3

In the preferred embodiment, with LTE/LTE-A systems Stochastic accessing (Random Access) targeting sequencing (preamble) as being illustrated exemplified by D2D system reference signals.

It is preferred that, include the step of wireless communications method：

It is preferred that, the first configuration information includes configuration signal and triggering signaling two parts.Configuration signal reuses LTE/LTE-A RACH (Random Access Channel, abbreviation RACH) specific configuration information, i.e., first of system cellular communications Configuration information indicates random access guiding index, and PRACH (Physical RACH, Physical Random Access Channel) mask index (Mask Index).Random access guiding is indexed for determining targeting sequencing, and PRACH masks are indexed for determining the leading sequence The defeated subframe position of biographies.First user equipment determines the configuration information of the targeting sequencing according to configuration signal.Trigger signaling Transmission for triggering the targeting sequencing, i.e. the first user equipment are only received after the triggering signaling, are just matched somebody with somebody according to described The configuration of confidence order sends described leading.

It is preferred that, the content of the second configuration information and the first configuration information is identical, i.e., including configuration signal and triggering signaling Two parts, wherein, configuration signal includes random access guiding index and PRACH mask index informations.Second configuration information is matched somebody with somebody Confidence order can be transmitted using one of following three kinds of modes：

1) configuration signal of the second configuration information is carried in high-level signaling and transmitted, such as RRC signaling, or MAC letters Order.

2) configuration signal of the second configuration information is transmitted in the way of broadcast signaling, such as included in SIB.

3) configuration signal of the second configuration information is included in paging (paging) message.

It is preferred that, the triggering signaling that the second configuration signal includes is described leading for triggering the detection of second user equipment, i.e., Second user equipment just carries out the detection of the targeting sequencing after triggering signaling is only received.It is preferred that, triggering signaling can be with It is physical layer signaling, such as included in DCI format, second user equipment is only after DCI is detected, and just detection is with reference to letter Number；Or the triggering signaling is included in beep-page message, triggering of the second user equipment only in beep-page message is received After signaling, the reference signal is just detected.

Or, the second configuration information only includes configuration signal, and configuration signal includes random access guiding index and PRACH is covered Code index information, included in beep-page message.Second user equipment is received after beep-page message, starts to detect described with reference to letter Number.

Or, the second configuration information only includes triggering signaling.That is, second user equipment is received after the triggering signaling, is entered The detection of the row targeting sequencing.The triggering signaling is as it was previously stated, here is omitted.

Example 4

It is preferred that, include the step of wireless communications method：

S1：Network node sends the first configuration information to the first user equipment, wherein, the first configuration information carries reference The configuration parameter of signal；

S2：First user equipment sends reference signal according to the instruction of the first configuration information；

S3：Second user equipment detects the reference signal.

In the preferred embodiment, the transmission and the transmission of the reference signal of the first configuration information, may be referred to reality Example 1 is applied, either embodiment 2 or embodiment 3, will not be repeated here.

In the preferred embodiment, second user equipment directly detects the reference signal, and does not need network node The second configuration information is sent to second user equipment.

Example 5

It is preferred that, the step of second user equipment is detected after the reference signal in wireless communications method includes：

S1：Second user equipment detects that reference signal obtains feedback message according to the instruction of the second configuration information；

S2：Second user equipment sends the feedback message, wherein, feedback message includes but is not limited at least one of： Sync id, timing advance parameter, channel condition information and reference signal mark, wherein, sync id is used to indicate whether hair Show D2D communication companions and/or synchronously whether succeed.

It is preferred that, second user equipment is after subframe n1 detects the reference signal, and second user equipment is in subframe n1+k1 Send the feedback message, it is preferred that feedback message is sync id, whether succeed for representing synchronous.

For example, the sync id represents synchronous whether succeed with 1 bit information position：Wherein, 0 represent it is synchronous not into Work(, 1 represents synchronous success.It is preferred that, sync id can use dedicated channel to be transmitted, and dedicated channel can also be reused PUCCH (the Physical Uplink Control Channel, physical uplink control of LTE/LTE-A system cellular up-links Channel) form 1a (format 1a), i.e. sync id is included in PUCCH format 1a and sent, and receiving terminal is (for example, network section Point) by detecting the PUCCH format 1a that second user equipment is sent, it is determined that whether synchronous succeed.Or, it can design new special With channel, to contain sync id, it will not be repeated here.It is preferred that, dedicated channel can use PUCCH format 1a resource It is transmitted, the transmission of dedicated channel is either carried out using special reserved resource or network node authorization resources.

It is preferred that, if above-mentioned dedicated channel is entered using PUCCH format 1/1a resource or special reserved resource Row is sent, then the positive integer that above-mentioned k1 is due up, for example, agreement k1=4, or k1=5 etc.；If above-mentioned special letter Road is transmitted using the resource of network node mandate, then above-mentioned k1 value depending on the transmission time of authorization message, Repeat no more.

It is preferred that, sync id is used either with or without sending expressions, for example, dedicated channel is for representing the sync id, Second user equipment sends the dedicated channel if synchronous success, and second user equipment does not send this if synchronization is unsuccessful Dedicated channel, receiving terminal (for example, network node) judges that second user equipment is same by detecting whether the dedicated channel is transmitted Whether step succeeds.It is preferred that, dedicated channel can reuse PUCCH format 1 (format 1), i.e. if second user equipment is same Walk successfully, then transmit PUCCH format 1, otherwise do not transmit.Or the new dedicated channel of design, to contain the sync id, Repeat no more.

It is preferred that, after network node detects the feedback message, network node is to second user device authorization resource, Two user equipmenies transmit more testing results in the resource of the mandate, for example, timing advance parameter, channel condition information Deng, or authorization resources are directly used in the transmission of the first user equipment and second user equipment D2D user data.Wherein, timing Advance parameter represents the first user equipment when sending data, relative to the time adjustment amount for sending the reference signal；Channel Status information is channel condition information of the first user equipment that obtains of the measurement reference signal to second user equipment, for example CQI, PMI, RI etc..

Example 6

It is preferred that, the step of second user equipment is detected after the reference signal in the synchronous method of equipment includes：

S1：Second user equipment detects reference signal to obtain feedback message according to the instruction of the second configuration information；

Above-mentioned reference signal is identified for recognizing first reference signal, for example, reference signal has various configurations side Formula, every kind of configuration mode represents that reference signal mark represents the index of the instruction configuration mode with an index.

It is preferred that, second user equipment is after subframe n2 detects the reference signal, and second user equipment is in subframe n2+k2 Feed back feedback message.

It is preferred that, frequency domain resource is authorized by network node used in feedback message transmission, for example, above-mentioned preferred When network node is to second user equipment the second configuration information of transmission in embodiment, while authorization message is sent, or network section Point individually sends authorization message to second user equipment, wherein, authorization message is used for the resource that indication feedback message is transmitted.Example Such as, network node sends the triggering signaling of the second configuration information in subframe n3, and second user equipment is detected in subframe n3+k3 and referred to Signal, it is preferred that authorization message and with triggering signaling issue simultaneously.Authorization message is used for second user device authorization resource, Wherein, resource is used for the transmission of feedback message；Second user equipment sends feedback message in subframe n3+m3.Wherein, k3 and m3 are equal For the positive integer of agreement, and m3 ＞ k3, for example, k3=4, m3=8 etc., will not be repeated here.

It is preferred that, resource used in feedback message transmission is private resource or reserved resource, and second user equipment exists The feedback message is sent in special or reserved resource.For example, the feedback message is included using special control channel, and And distribute private resource for the DCCH.

Example 7

The step of in the synchronous method of equipment after the second user equipment detection reference signal, includes：

Network node judges whether second user equipment finds by receiving after the feedback message that second user equipment is sent First user equipment and/or whether it is synchronous with the first user equipment success.It is preferred that, if second user equipment finds that first uses Some or all of information forwarding in family equipment and/or success synchronous with the first user equipment, network node feedback message To the first user equipment.

It is preferred that, the first user equipment does not receive the feedback message of second user equipment transmission directly by network node. For example, the first user equipment is synchronized with second user equipment, then the first user equipment directly receives feedback message, herein not Repeat again.

Example 8

There is provided a kind of more efficiently D2D companions in the preferred embodiment to find and synchronous method, to realize that D2D leads to Letter.Step includes：

S1：Network node carries out user equipment positioning, i.e. the first relative position between network node and the first user equipment Put and the second relative position between network node and second user equipment；

S2：Network node is based on the first relative position and the second relative position calculates second user equipment and set with the first user Third phase between standby is to position.

It is preferred that, calculate the first relative position and/or the second relative position can the timing advance TA based on user equipment Parameter and/or radio wave arrival direction (Angle of Arrival, referred to as AoA).Wherein, TA is used to estimate user equipment Distance between network node；AoA is used to estimate the relative bearing between user equipment and network node.Based on the two ginsengs Number, network node is anticipated that the relative position of user equipment.

It is preferred that, the first user equipment and/or second user equipment feed back the positional information of oneself to network node.Example Such as, user equipment obtains the positional information of oneself by householder methods such as global position systems and feeds back oneself to network node Positional information network.

It is preferred that, the input that network node is based on OAM (Operation and Maintaining) obtains user equipment Positional information.For example, for fixed user equipment (such as media server), user equipment can be derived from deployment The positional information of body, and the positional information is input to base station by OAM.

It is preferred that, network node after the first relative position and the second relative position is obtained, according to the first relative position and Third phase between second relative position the first user equipment of calculating and second user is to position.If third phase is more than to position One predetermined threshold value, then show between the first user equipment and second user equipment away from too far away, therefore be not suitable for D2D and lead to Letter, then the companion that network node would not start described in above preferred embodiment has found and synchronous flow；Otherwise, net Network node starts the flow of wireless communications method of the present invention according to the description of above preferred embodiment.

Compared with above preferred embodiment, in the preferred embodiment, network node is performing companion's discovery and synchronous mistake Before journey, the relative position between user equipment is first determined whether, companion is further improved and finds and synchronous efficiency, it is to avoid user The power dissipation of equipment.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims

1. a kind of wireless communications method, it is characterised in that including：

First user equipment receives the first configuration information that network node is sent, wherein, first configuration information includes：With reference to The configuration parameter of signal, the parameter signal is for companion's discovery between user equipment, synchronization, channel measurement；

First user device responsive sends the reference signal in first configuration information；

Second user equipment detects the reference signal；

The second user equipment generates feedback message according to testing result and/or the reference signal；

The second user equipment sends the feedback message；

Wherein, after the second user equipment transmission feedback message, including at least one of：

First user equipment receives the feedback message that the second user equipment is sent, and according to the feedback message It is determined that to the second user equipment send data when timing；Or

The network node receives the feedback message, and whether to judge the second user equipment according to the feedback message It is synchronous with first user equipment, it is some or all of in feedback message described in the network node if synchronous First user equipment is given in information forwarding, and the feedback that first user equipment receives the network node transmission disappears Some or all of information in breath, and determined according to the feedback message to determining during second user equipment transmission data When；Or

The network node receives the feedback message, and whether to judge the second user equipment according to the feedback message Synchronous with first user equipment, if synchronous, the network node triggers first user equipment and described second User equipment carries out data transmission.

2. according to the method described in claim 1, it is characterised in that the second user equipment is according to testing result and/or institute The step of stating reference signal generation feedback message includes：

The second user equipment judges whether synchronous with first user equipment according to testing result；

If the second user equipment is synchronous with first user equipment, the second user equipment is according to the inspection Survey result and/or reference signal generation feedback message.

3. according to the method described in claim 1, it is characterised in that the feedback message includes at least one of：Synchronous letter Breath report and/or channel status information reports, wherein,

The channel condition information includes at least one of：Channel quality indicator (CQI), pre-coding matrix index PMI, order instruction RI；

The synchronizing information includes at least one of：Sync id, for indicating whether to find D2D communication companions and/or use Whether succeed in representing synchronous；Reference signal is indexed, for identifying the reference signal；Timing advance parameter, for adjusting State timing when the first user equipment sends data.

4. according to the method described in claim 1, it is characterised in that the second user equipment detects the step of the reference signal Suddenly include：

The second user equipment receives the second configuration information that the network node is sent, wherein, second configuration information Include the configuration parameter of the reference signal, and/or, second configuration information includes triggering signaling, and the triggering signaling is used The reference signal is detected in triggering the second user equipment；

The second user equipment detects the reference signal according to the instruction of second configuration information.

5. the method according to claim 1 or 4, it is characterised in that the configuration parameter includes at least one of：Send The port number information of reference signal, resource allocation information, subframe configuration information, power configuration information, bandwidth, is jumped at the duration Frequency indicates that frequency domain original position is indicated, configuration index, and transmission is indicated, cyclic shift, preamble index, mask index.

6. method according to claim 4, it is characterised in that the second user equipment receives the network node and sent The second configuration information the step of include at least one of：

The second user equipment receives second configuration information that the network node is sent by the forms of broadcasting, wherein, Second configuration information is included in system information block SIB；Or

The second user equipment receives second configuration information that the network node is sent by dedicated signaling, wherein, Second configuration information is carried in dedicated RRC signaling；Or

The second user equipment receives second configuration information that the network node is sent by beep-page message, wherein, Second configuration information is included in beep-page message, and the beep-page message is used for the paging that device-to-device communicates；Or

The second user equipment receives second configuration information that the network node is sent by physical layer signaling, its In, the physical layer signaling is included in Downlink Control Information DCI format, described for triggering the second user equipment detection Reference signal.

7. according to the method described in claim 1, it is characterised in that receive network node is sent first in the first user equipment Before configuration information, in addition to：

The network node obtains the first relative position between first user equipment and the network node and described The second relative position between second user equipment and the network node；

The network node obtains first user and set according to first relative position and second relative position calculating The standby third phase between the second user equipment is to position；

When the third phase is less than predetermined threshold to position, the network node triggers first user equipment and receives described First configuration information that network node is sent.

8. according to the method described in claim 1, it is characterised in that first configuration information also includes：Signaling is triggered, its In, the triggering signaling is used to trigger the first user equipment transmission reference signal.

9. according to the method described in claim 1, it is characterised in that the reference signal includes at least one of：Channel is surveyed Measure reference signal CSI-RS, detection reference signal SRS, around uplink demodulation reference signal, synchronizing signal SS, RACH Targeting sequencing, special synchronous signal.

10. a kind of wireless communication system, it is characterised in that including：Network node, the first user equipment and second user equipment, Wherein,

The network node includes：

First transmitting element, for sending the first configuration information to first user equipment, wherein, first configuration information Including：The configuration parameter of reference signal, the parameter signal is for companion's discovery between user equipment, synchronization, channel measurement；

First user equipment includes：

First receiving unit, for receiving first configuration information that the network node is sent；

Second transmitting element, for sending the reference signal in response to first configuration information；

The second user equipment includes：

Detection unit, for detecting the reference signal；

First generation unit, for the testing result according to the detection unit and/or reference signal generation feedback message；

3rd transmitting element, for sending the feedback message；

Wherein, first user equipment, is additionally operable to after the second user equipment sends the feedback message, receives institute The feedback message of second user equipment transmission is stated, and is determined according to the feedback message to second user equipment transmission Timing during data；

The network node, is additionally operable to after the second user equipment sends the feedback message, receives the feedback and disappears Breath, and judge whether the second user equipment is synchronous with first user equipment according to the feedback message, if same Step, then give first user equipment by some or all of information forwarding in the feedback message；First user Equipment, is additionally operable to receive some or all of information in the feedback message that the network node is sent, and according to described Feedback message is determined to timing during second user equipment transmission data；

The network node is additionally operable to after the second user equipment sends the feedback message, is received the feedback and is disappeared Breath, and judge whether the second user equipment is synchronous with first user equipment according to the feedback message, if same Step, then trigger first user equipment and carry out data transmission with the second user equipment.

11. system according to claim 10, it is characterised in that first generation unit includes：

Judge module, it is synchronous with first user equipment for being judged whether according to the testing result；

Generation module, for being tied when the second user equipment is synchronous with first user equipment according to the detection Fruit and/or reference signal generation feedback message.

12. system according to claim 10, it is characterised in that the feedback message includes at least one of：It is synchronous Information report and/or channel status information reports, wherein,

13. system according to claim 10, it is characterised in that the detection unit includes：

Receiving module, for receiving the second configuration information that the network node is sent, wherein, the second configuration information bag Include：The configuration parameter of the reference signal, and/or, second configuration information includes triggering signaling, and the triggering signaling is used for Trigger the second user equipment and detect the reference signal；

Detection module, for detecting the reference signal according to the instruction of second configuration information.

14. system according to claim 10, it is characterised in that the network node also includes：

Acquiring unit, for obtaining the first relative position between first user equipment and the network node and described The second relative position between second user equipment and the network node；

Computing unit, for obtaining first user according to first relative position and second relative position calculating and setting The standby third phase between the second user equipment is to position；

Judging unit, for judging whether the third phase is less than predetermined threshold to position, when the third phase is less than to position During the predetermined threshold, trigger first user equipment and receive first configuration information that the network node is sent.