CN104883728A - Transmission method in D2D communication, and device thereof - Google Patents
Transmission method in D2D communication, and device thereof Download PDFInfo
- Publication number
- CN104883728A CN104883728A CN201410070394.8A CN201410070394A CN104883728A CN 104883728 A CN104883728 A CN 104883728A CN 201410070394 A CN201410070394 A CN 201410070394A CN 104883728 A CN104883728 A CN 104883728A
- Authority
- CN
- China
- Prior art keywords
- synchronizing signal
- synchronization
- signal
- synchronous
- assistance messages
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 title abstract description 10
- 238000004891 communication Methods 0.000 title abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims description 91
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101150069124 RAN1 gene Proteins 0.000 description 1
- 101100355633 Salmo salar ran gene Proteins 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a transmission method in D2D communication, and a device thereof. For aiming at a problem of selecting a D2D synchronization signal for ensuring high precision in D2D synchronization timing, D2D transmitting UE transmits synchronization assisting information for assisting D2D receiving UE to select an appropriate D2D synchronization signal as a synchronization reference. As one embodiment, the synchronization assisting information comprises an identification bit for indicating whether a corresponding D2D synchronization signal can be used for a synchronization reference; and if not, the D2D receiving UE does not select the D2D synchronization signal. According to the transmission method, the receiving quality of the D2D synchronization signal is considered for assisting selection for the synchronization reference, and a relatively good precision is realized. Furthermore the synchronization assisting information is in the form of a plurality of selective information assemblies. The transmission method and the device thereof are suitable for satisfying the requirement for different redundancies/synchronization precisions.
Description
Technical field
The present invention relates to device to the synchronization scenario in device (D2D-Device to Device) communication, particularly relate to the synchronization scenario based on Long Term Evolution (LTE-Long Term Evolution) D2D.
Background technology
In traditional third generation partner program (3GPP-3rd Generation PartnerProject) Long Term Evolution (LTE-Long Term Evolution) system, transfer of data occurs between base station and subscriber equipment (UE-User Equipment).In 3GPP R12, device is also discussed by project verification device (D2D-Device to Device) communication, and the essential characteristic of D2D allows the transfer of data between UE.It is synchronous that D2D sends that UE can send that D2D that D2D synchronizing sequence (D2DSS-D2D Synchronization Sequence) and D2D synchronizing channel (D2DSCH-D2D Synchronization Channel) be receives that UE can obtain with described D2D transmission UE.
If the UE of D2D communication receives multiple D2DSS, it needs therefrom to select an optimum reference synchronization sending timing as its D2D.The conclusion that 3GPP reaches wireless access network first working group the 76th meeting (RAN1#76) is: if other conditions are all the same, and the D2DSS selecting the quality of reception best is as reference synchronization.Further, also have a scheme to be discussed: if other conditions are all the same, select D2DSS that synchronization level is the highest as reference synchronization.The described synchronization level of synchronizing signal is a term of the priority of mark synchronizing signal.The implication of reference synchronization is: the time of reception that the transmitting time of D2DSS equals its reference synchronization adds a side-play amount.The implication of synchronisation source is: the synchronisation source of D2DSS is the sender of the reference synchronization of D2DSS.The implication in initial synchronisation source is: the initial synchronisation source of D2DSS is the sender of the most original reference synchronization of D2DSS
Such as, the synchronization level of main synchronizing sequence (PSS-Primary the SynchronizationSequence)/secondary synchronization sequences (SSS-Secondary Synchronization Sequence) that eNB sends is 0, the synchronization level of the D2DSS that the UE in described eNB covers sends is 1, and synchronisation source is that the D2DSS(of a UE is sent by the 2nd UE) synchronization level be 2.Described eNB is the initial synchronisation source of the 2nd UE, has 2 grades of links-be that eNB a to a UE and UE is to the 2nd UE respectively between the 2nd UE and initial synchronisation source.
For the D2DSS of different synchronization levels and the quality of reception, how selecting suitable D2DSS as reference synchronization, is a problem needing to solve.The present invention is directed to this problem and disclose solution.
Summary of the invention
The invention discloses the method in a kind of subscriber equipment (UE-User Equipment), wherein, comprise the steps:
-steps A. determine synchronous assistance messages
-step B. sends D2D synchronizing signal and indicates synchronous assistance messages
Wherein, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
As an embodiment, the unit of described power threshold is decibel or milli decibel, and the unit of described time threshold is microsecond.
Concrete, according to an aspect of the present invention, it is characterized in that, described power threshold is described D2D synchronizing signal that described UE advises can be used as reference synchronization minimal detectable power at receiving terminal.
Concrete, according to an aspect of the present invention, it is characterized in that, described power threshold is the maximal received power of described D2D synchronizing signal in object UE of described UE suggestion, and described object UE is the UE that can send D2D synchronizing signal.
Concrete, according to an aspect of the present invention, it is characterized in that, if the synchronisation source of described D2D synchronizing signal is described UE, described time threshold is 0; If the synchronisation source of described D2D synchronizing signal is base station, described time threshold is that the estimated time that described UE draws according to the downstream signal of described base station is poor; If the synchronisation source of described D2D synchronizing signal is other UE, described time threshold is described UE adds the D2D synchronizing signal instruction of other UE described time threshold according to difference estimated time that the D2D synchronizing signal of other UE described draws.
As an embodiment, estimated time, the computational methods of difference were as follows, UE adopts relevant detection or incoherent detection algorithm to detect synchronizing signal (sending UE from base station or D2D), calculate the Reference Signal Received Power (RSRP-Reference SignalReception Power) of described synchronizing signal further, the i.e. mean receiving power of resource particle (RE-ResourceElement) that takies of described synchronizing signal, the absolute value of the time difference between the time of advent of described synchronizing signal corresponding under adopting the way of lookup table to determine described RSRP and specific cumulative distribution function (CDF-Cumulative DistributionFunction) condition according to described RSRP and actual time of arrival is poor as estimated time.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, described D2D synchronizing signal comprises D2D synchronizing sequence and D2D synchronous information block, described D2D synchronizing sequence comprise following one of at least:
-ZC(ZadOff-Chu) sequence
-pseudo random sequence.
If described synchronous assistance messages comprises described power threshold, described power threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described time threshold, described time threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described flag bit, described flag bit is carried by described D2D synchronizing sequence or described D2D synchronous information block.
The invention discloses a kind of method in UE, wherein, comprise the steps:
-steps A. receive K group D2D synchronizing signal and obtain the synchronous assistance messages of K group, wherein detect D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to K, described K be greater than 1 positive integer.
According to the synchronous assistance messages of described K group ,-step B. determines that D2D sends timing, the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
-step C. sends timing according to described D2D, sends D2D signal
Wherein, described UE is in outside MPS process, described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k
Concrete, according to an aspect of the present invention, it is characterized in that, if one of met the following conditions, described reference synchronization is described option 2, and namely described UE determines that described D2D sends timing voluntarily:
-F
1..., F
kall identify corresponding synchronizing signal and can not be used as reference synchronization
-described D
1..., D
kbe less than P respectively in the received power of described UE
1..., P
k
Concrete, according to an aspect of the present invention, it is characterized in that, described D2D synchronizing signal comprises D2D synchronizing sequence and D2D synchronous information block, described D2D synchronizing sequence comprise following one of at least:
-ZC sequence
-pseudo random sequence.
If described synchronous assistance messages comprises described power threshold, described power threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described time threshold, described time threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described flag bit, described flag bit is carried by described D2D synchronizing sequence or described D2D synchronous information block.
Concrete, according to an aspect of the present invention, it is characterized in that, described reference synchronization is described option one, and described object synchronization signal is one of following:
-described flag bit is designated the synchronizing signal that in the synchronizing signal that in the synchronizing signal that can be used as reference synchronization, synchronization level is the highest, the quality of reception is best
-the received power of synchronizing signal that receives is greater than the best synchronizing signal of the quality of reception in the highest synchronizing signal of synchronization level in the synchronizing signal of corresponding described power threshold
The D2D synchronizing signal that in-described K group D2D synchronizing signal, synchronization time difference is minimum.Described synchronization time difference is that difference estimated time that described UE determines according to the quality of reception of described D2D synchronizing signal adds corresponding described time threshold.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, if described reference synchronization is described option 2, described D2D signal comprises described D2D synchronizing signal.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, if described reference synchronization is described option one and described object synchronization signal is less than the power threshold of described object synchronization signal in the received power of described UE, described D2D signal does not comprise described D2D synchronizing signal.
The invention discloses a kind of subscriber equipment, it is characterized in that, this equipment comprises:
First module: for determining synchronous assistance messages
Second module: indicate synchronous assistance messages for sending D2D synchronizing signal
Wherein, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
As an embodiment, the feature of the said equipment is, described power threshold is one of following:
The described D2D synchronizing signal of-described UE suggestion can be used as the minimal detectable power of reference synchronization at receiving terminal
The described D2D synchronizing signal that-described UE advises is at the maximal received power of object UE, and described object UE is the UE that can send D2D synchronizing signal.
The invention discloses a kind of subscriber equipment, it is characterized in that, this equipment comprises:
First module: obtaining the synchronous assistance messages of K group for receiving K group D2D synchronizing signal, wherein detecting D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to K, described K be greater than 1 positive integer.
Second module: for determining that according to the synchronous assistance messages of described K group D2D sends timing, the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
3rd module: for sending timing according to described D2D, send D2D signal
Wherein, described UE is in outside MPS process, described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k.
As an embodiment, the feature of the said equipment is, if one of met the following conditions, described reference synchronization is described option 2, and namely described UE determines that described D2D sends timing voluntarily:
-F
1..., F
kall identify corresponding synchronizing signal and can not be used as reference synchronization
-described D
1..., D
kbe less than P respectively in the received power of described UE
1..., P
k
As another embodiment, the feature of the said equipment is, described reference synchronization is described option one, and described object synchronization signal is one of following:
-described flag bit is designated the synchronizing signal that in the synchronizing signal that in the synchronizing signal that can be used as reference synchronization, synchronization level is the highest, the quality of reception is best
-the received power of synchronizing signal that receives is greater than the best synchronizing signal of the quality of reception in the highest synchronizing signal of synchronization level in the synchronizing signal of corresponding described power threshold
The D2D synchronizing signal that in-described K group D2D synchronizing signal, synchronization time difference is minimum.Described synchronization time difference is that difference estimated time that described UE determines according to the quality of reception of described D2D synchronizing signal adds corresponding described time threshold.
How to select D2D synchronizing signal to guarantee this problem of precision of D2D synchronization timing in D2D communication, the invention discloses the transmission method in a kind of D2D communication and device.D2D transmission UE sends synchronous supplementary and assists D2D reception UE to select suitable D2D synchronizing signal as reference synchronization, as an embodiment, described synchronous supplementary comprises flag bit and is used to indicate corresponding D2D synchronizing signal and whether can be used to reference synchronization, if can not, then D2D receives UE and does not select this D2D synchronizing signal.Contemplated by the invention the quality of reception assisted Selection reference synchronization of D2D synchronizing signal, possess good precision.The synchronous supplementary of the design of the present invention simultaneously provides several optional information combination, is applicable to the demand of different redundancy/synchronization accuracies.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the flow chart that D2D sends timing of determining according to an embodiment of the invention;
Fig. 2 shows the schematic diagram that D2D synchronizing signal according to an embodiment of the invention is selected;
Fig. 3 shows the schematic diagram that the D2D synchronizing signal under multiple synchronization level according to an embodiment of the invention is selected;
Fig. 4 shows the processing unit structured flowchart in D2D subscriber equipment according to an embodiment of the invention;
Fig. 5 shows the processing unit structured flowchart in D2D subscriber equipment according to still another embodiment of the invention;
Embodiment
Hereafter will be described in further detail technical scheme of the present invention by reference to the accompanying drawings, and it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine arbitrarily mutually.
Embodiment 1
Embodiment 1 illustrates determines that D2D sends the flow chart of timing, as shown in Figure 1.In accompanying drawing 1, UE U1 and UE U3 is that two UE, the UE U2 sending D2D synchronizing signal carry out the UE that D2D sends timing.
for UE U1, in step s 11, determine synchronous assistance messages M
1; In step s 12, D2D synchronizing signal D is sent
1indicate synchronous assistance messages M
1.
for UE U3, in step S31, determine synchronous assistance messages M
2; In step s 32, D2D synchronizing signal D is sent
2indicate synchronous assistance messages M
2.
for UE U2, in the step s 21, receive 2 groups of D2D synchronizing signal D
1and D
2obtain 2 groups of synchronous assistance messages M
1and M
2, wherein detect D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to 2; In step S22, determine that D2D sends timing according to described 2 groups of synchronous assistance messages; In step S23, send timing according to described D2D, send D2D signal.
In embodiment 1, UE U2 is in outside MPS process, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
The reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
As a sub-embodiment of embodiment 1, described synchronous assistance messages comprises described flag bit,
The concrete methods of realizing of the step S22 in UE U2 is as follows:
If D
1and D
2in flag bit all identify corresponding synchronizing signal and can not be used as reference synchronization, the reference synchronization that described D2D sends timing is described option 2; If D
1and D
2in have and only have the flag bit contained by identify corresponding synchronizing signal and can be used as reference synchronization, then corresponding synchronizing signal be described D2D send timing reference synchronization; If D
1and D
2in flag bit all identify corresponding synchronizing signal and can be used as reference synchronization, then described D2D sends the reference synchronization of timing is D
1and D
2the synchronizing signal that in the synchronizing signal that middle synchronization level is the highest, the quality of reception is best, if i.e. D
1and D
2synchronization level different then select high that of synchronization level, if identical, then select good that of the quality of reception.
The concrete methods of realizing of the step S11 in UE U1 is as follows:
If D
1synchronisation source be transmitting apparatus outside UE U1, UE U1 is according to the D received
1the quality of reception of reference synchronization determine D
1if in flag bit-described quality of reception lower than certain threshold, D
1in flag bit mark D
1can not reference synchronization be used to, otherwise then may be used for reference synchronization, according to D
1the synchronization level of synchronisation source, described certain threshold may be different, such as synchronization level less (the closer to base station), and described certain threshold is lower; If D
1synchronisation source be UE U1 oneself, UE U1 according to its transmission state, movement velocity, power overhead etc. determine D voluntarily
1in flag bit.
Embodiment 2
Embodiment 2 illustrates the schematic diagram that D2D synchronizing signal is selected, as shown in Figure 2.In embodiment 2, UE U4, UE U5 and UE U6 is that three UE, the UE U7 sending D2D synchronizing signal carry out the UE that D2D sends timing.
for UE U4, first determine synchronous assistance messages M
1, then send D2D synchronizing signal D
1indicate synchronous assistance messages M
1.
for UE U5, first determine synchronous assistance messages M
2, then send D2D synchronizing signal D
2indicate synchronous assistance messages M
2.
for UE U6, first determine synchronous assistance messages M
3, then send D2D synchronizing signal D
3indicate synchronous assistance messages M
3.
for UE U7, first receive 3 groups of D2D synchronizing signals and obtain 3 groups of synchronous assistance messages (as Suo Shi S47, S57, S67 in accompanying drawing 2), wherein detect D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to 3; Then determine that D2D sends timing according to described 3 groups of synchronous assistance messages; Finally send timing according to described D2D, send D2D signal.
In embodiment 2, UE U7 is in outside MPS process, and the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described 3 groups of D2D synchronizing signals
Described in option 2., UE determines voluntarily
Described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k
As a sub-embodiment of embodiment 2, described M
kcomprise power threshold P
k, described power threshold is that the D2D synchronizing signal sending UE suggestion can be used as the minimal detectable power of reference synchronization at receiving terminal.As in accompanying drawing 2, P
1, P
2, P
3identify UE U4 respectively, the D2D synchronizing signal of U5, U6 suggestion can be used to reference to synchronous scope-respectively as broken circle C
4, C
5, C
6shown in.UE U7 is according to D
1, D
2, D
3received power be less than P respectively
1, P
2, P
3determine to determine that D2D sends timing-described option 2 voluntarily.
As another sub-embodiment of embodiment 2, described M
kcomprise power threshold P
kwith flag bit F
k, described power threshold is the maximal received power of D2D synchronizing signal in object UE of transmission UE suggestion, and described object UE is the UE that can send D2D synchronizing signal.UE U7 is according to flag bit F
kdetermine that D2D sends the reference synchronization (concrete steps reference example 1) of timing, UE U7 is according to D
1, D
2, D
3received power be less than P respectively
1, P
2, P
3determine that it can send D2D synchronizing signal.Namely comprise in the D2D signal that UE U7 sends in the D2D synchronizing signal that D2D synchronizing signal keeps synchronous-UE U7 to send for receiving terminal and UE U7 and also comprise D2D synchronizing signal that power threshold indicates it the to advise maximal received power in object UE, as shown in broken circle C7.
Embodiment 3
Embodiment 3 illustrates the schematic diagram that the D2D synchronizing signal under multiple synchronization level is selected, as shown in Figure 3.In accompanying drawing 3, UE U10, UE U11, UE U13 is sending D2D synchronizing signal, and wherein UE U10 and UE U11 determines that its D2D sends timing voluntarily, and UE U10 is the synchronisation source (as shown in S101) of the D2D synchronizing signal that UE U11 sends.UE U12 detects UE U10 simultaneously, the D2D synchronizing signal that UEU11, UE U13 sends.
For UE U12, first receive 3 groups of D2D synchronizing signal D
1(shown in S102), D
2(shown in S112), D
3(shown in S132) obtains 3 groups of synchronous assistance messages, wherein detects D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to 3; Then determine that D2D sends timing according to described 3 groups of synchronous assistance messages; Finally send timing according to described D2D, send D2D signal.
In embodiment 3, described M
kcomprise time threshold T
k, wherein T
1, T
3be all 0, T
2equal T
1add that estimated time is poor, described estimated time, difference was that UE U11 is according to D
2the synchronization time difference of itself and UE U10 determined of reference synchronization (S101 shown in) received signal quality.
The reference synchronization that described D2D sends timing is the D2D synchronizing signal that in described 3 groups of D2D synchronizing signals, synchronization time difference is minimum.Described synchronization time difference is that UE U12 is according to D
kthe quality of reception determine estimated time difference add T
k.
Embodiment 4
Embodiment 4 illustrates the processing unit structured flowchart in D2D subscriber equipment, as shown in Figure 4.In accompanying drawing 4, UE processing unit 300 is by determination module 301, and sending module 302 forms.
Determination module 301 is for determining synchronous assistance messages; Sending module 302 indicates synchronous assistance messages for sending D2D synchronizing signal.
Wherein, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
Described D2D synchronizing signal comprises D2D synchronizing sequence and D2D synchronous information block, described D2D synchronizing sequence comprise following one of at least:
-ZC sequence
-pseudo random sequence.
If described synchronous assistance messages comprises described power threshold, described power threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described time threshold, described time threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described flag bit, described flag bit is carried by described D2D synchronizing sequence or described D2D synchronous information block.
Embodiment 5
Embodiment 5 illustrates the processing unit structured flowchart in D2D subscriber equipment, as shown in Figure 5.In accompanying drawing 5, UE processing unit 400 is by receiver module 401, determination module 402, and sending module 403 forms.
Receiver module 401 obtains the synchronous assistance messages of K group for receiving K group D2D synchronizing signal, wherein detects D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to K, described K be greater than 1 positive integer.
Determination module 402 is for determining that according to the synchronous assistance messages of described K group D2D sends timing, and the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
Sending module 403, for sending timing according to described D2D, sends D2D signal
In embodiment 5, described UE is in outside MPS process, described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k.
Described reference synchronization is described option one, and described object synchronization signal is one of following:
-described flag bit is designated the synchronizing signal that in the synchronizing signal that in the synchronizing signal that can be used as reference synchronization, synchronization level is the highest, the quality of reception is best
-the received power of synchronizing signal that receives is greater than the best synchronizing signal of the quality of reception in the highest synchronizing signal of synchronization level in the synchronizing signal of corresponding described power threshold
The D2D synchronizing signal that in-described K group D2D synchronizing signal, synchronization time difference is minimum.Described synchronization time difference is that difference estimated time that described UE determines according to the quality of reception of described D2D synchronizing signal adds corresponding described time threshold.
The all or part of step that one of ordinary skill in the art will appreciate that in said method can be carried out instruction related hardware by program and complete, and described program can be stored in computer-readable recording medium, as read-only memory, and hard disk or CD etc.Optionally, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Accordingly, each modular unit in above-described embodiment, can adopt example, in hardware to realize, and also can be realized by the form of software function module, the application is not limited to the combination of the software and hardware of any particular form.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improves, all should be included within protection scope of the present invention.
Claims (16)
1. the method in UE, wherein, comprises the steps:
-steps A. determine synchronous assistance messages
-step B. sends D2D synchronizing signal and indicates synchronous assistance messages
Wherein, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
2. method according to claim 1, is characterized in that, described power threshold is that the described D2D synchronizing signal that described UE advises can be used as the minimal detectable power of reference synchronization at receiving terminal.
3. method according to claim 1, is characterized in that, described power threshold is the maximal received power of described D2D synchronizing signal in object UE of described UE suggestion, and described object UE is the UE that can send D2D synchronizing signal.
4. method according to claim 1, is characterized in that, if the synchronisation source of described D2D synchronizing signal is described UE, described time threshold is 0; If the synchronisation source of described D2D synchronizing signal is base station, described time threshold is that the estimated time that described UE draws according to the downstream signal of described base station is poor; If the synchronisation source of described D2D synchronizing signal is other UE, described time threshold is described UE adds the D2D synchronizing signal instruction of other UE described time threshold according to difference estimated time that the D2D synchronizing signal of other UE described draws.
5. according to claim 1,2,3, the method described in 4, is characterized in that, described D2D synchronizing signal comprises D2D synchronizing sequence and D2D synchronous information block, described D2D synchronizing sequence comprise following one of at least:
-ZC sequence
-pseudo random sequence.
If described synchronous assistance messages comprises described power threshold, described power threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described time threshold, described time threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described flag bit, described flag bit is carried by described D2D synchronizing sequence or described D2D synchronous information block.
6. the method in UE, wherein, comprises the steps:
-steps A. receive K group D2D synchronizing signal and obtain the synchronous assistance messages of K group, wherein detect D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to K, described K be greater than 1 positive integer.
According to the synchronous assistance messages of described K group ,-step B. determines that D2D sends timing, the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
-step C. sends timing according to described D2D, sends D2D signal.
Wherein, described UE is in outside MPS process, described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k.
7. method according to claim 6, is characterized in that, if one of met the following conditions, described reference synchronization is described option 2, and namely described UE determines that described D2D sends timing voluntarily:
-F
1..., F
kall identify corresponding synchronizing signal and can not be used as reference synchronization
-described D
1..., D
kbe less than P respectively in the received power of described UE
1..., P
k.
8. method according to claim 6, is characterized in that, described D2D synchronizing signal comprises D2D synchronizing sequence and D2D synchronous information block, described D2D synchronizing sequence comprise following one of at least:
-ZC sequence
-pseudo random sequence.
If described synchronous assistance messages comprises described power threshold, described power threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described time threshold, described time threshold is carried by described D2D synchronous information block; If described synchronous assistance messages comprises described flag bit, described flag bit is carried by described D2D synchronizing sequence or described D2D synchronous information block.
9. according to claim 6,7, the method described in 8, is characterized in that, described reference synchronization is described option one, and described object synchronization signal is one of following:
-described flag bit is designated the synchronizing signal that in the synchronizing signal that in the synchronizing signal that can be used as reference synchronization, synchronization level is the highest, the quality of reception is best
-the received power of synchronizing signal that receives is greater than the best synchronizing signal of the quality of reception in the highest synchronizing signal of synchronization level in the synchronizing signal of corresponding described power threshold
The D2D synchronizing signal that in-described K group D2D synchronizing signal, synchronization time difference is minimum.Described synchronization time difference is that difference estimated time that described UE determines according to the quality of reception of described D2D synchronizing signal adds corresponding described time threshold.
10. according to claim 6,7, the method described in 8, is characterized in that, if described reference synchronization is described option 2, described D2D signal comprises described D2D synchronizing signal.
11. according to claim 6, method described in 8, it is characterized in that, if described reference synchronization is described option one and described object synchronization signal is less than the power threshold of described object synchronization signal in the received power of described UE, described D2D signal does not comprise described D2D synchronizing signal.
12. 1 kinds of subscriber equipmenies, is characterized in that, this equipment comprises:
First module: for determining synchronous assistance messages
Second module: indicate synchronous assistance messages for sending D2D synchronizing signal
Wherein, described synchronous assistance messages comprise following one of at least:
-flag bit, identifies described D2D synchronizing signal and whether can be used as reference synchronization
-power threshold
-time threshold.
13. equipment according to claim 12, is characterized in that, described power threshold is one of following:
The described D2D synchronizing signal of-described UE suggestion can be used as the minimal detectable power of reference synchronization at receiving terminal
The described D2D synchronizing signal that-described UE advises is at the maximal received power of object UE, and described object UE is the UE that can send D2D synchronizing signal.
14. 1 kinds of subscriber equipmenies, is characterized in that, this equipment comprises:
First module: obtaining the synchronous assistance messages of K group for receiving K group D2D synchronizing signal, wherein detecting D2D synchronizing signal D
kobtain synchronous assistance messages M
k, k is the positive integer from 1 to K, described K be greater than 1 positive integer.
Second module: for determining that according to the synchronous assistance messages of described K group D2D sends timing, the reference synchronization that described D2D sends timing is one of following:
Option one. object synchronization signal, described object synchronization signal is one in described K group D2D synchronizing signal
Described in option 2., UE determines voluntarily
3rd module: for sending timing according to described D2D, send D2D signal.
Wherein, described UE is in outside MPS process, described M
kcomprise following one of at least:
-flag bit F
k, identify described D
kwhether reference synchronization can be used as
-power threshold P
k
-time threshold T
k.
15. equipment according to claim 14, is characterized in that, if one of met the following conditions, described reference synchronization is described option 2, and namely described UE determines that described D2D sends timing voluntarily:
-F
1..., F
kall identify corresponding synchronizing signal and can not be used as reference synchronization
-described D
1..., D
kbe less than P respectively in the received power of described UE
1..., P
k.
16. according to claim 14, and the equipment described in 15, is characterized in that, described reference synchronization is described option one, and described object synchronization signal is one of following:
-described flag bit is designated the synchronizing signal that in the synchronizing signal that in the synchronizing signal that can be used as reference synchronization, synchronization level is the highest, the quality of reception is best
-the received power of synchronizing signal that receives is greater than the best synchronizing signal of the quality of reception in the highest synchronizing signal of synchronization level in the synchronizing signal of corresponding described power threshold
The D2D synchronizing signal that in-described K group D2D synchronizing signal, synchronization time difference is minimum.Described synchronization time difference is that difference estimated time that described UE determines according to the quality of reception of described D2D synchronizing signal adds corresponding described time threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070394.8A CN104883728B (en) | 2014-02-27 | 2014-02-27 | Transmission method and device in a kind of D2D communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070394.8A CN104883728B (en) | 2014-02-27 | 2014-02-27 | Transmission method and device in a kind of D2D communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104883728A true CN104883728A (en) | 2015-09-02 |
| CN104883728B CN104883728B (en) | 2019-05-31 |
Family
ID=53951026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410070394.8A Active CN104883728B (en) | 2014-02-27 | 2014-02-27 | Transmission method and device in a kind of D2D communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104883728B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017049606A1 (en) * | 2015-09-25 | 2017-03-30 | 华为技术有限公司 | Paging method, synchronization method, and user equipment |
| CN106912073A (en) * | 2015-12-23 | 2017-06-30 | 上海贝尔股份有限公司 | A kind of wireless communications method and equipment |
| WO2017124338A1 (en) * | 2016-01-20 | 2017-07-27 | 华为技术有限公司 | Method and apparatus for sending synchronization information |
| WO2017193350A1 (en) * | 2016-05-12 | 2017-11-16 | 华为技术有限公司 | Information transmission method and user equipment |
| WO2018010267A1 (en) * | 2016-07-14 | 2018-01-18 | 中兴通讯股份有限公司 | Communication method and terminal |
| CN108141699A (en) * | 2015-10-08 | 2018-06-08 | 瑞典爱立信有限公司 | Device-to-device operation under the no network coverage |
| CN109076639A (en) * | 2016-05-13 | 2018-12-21 | 富士通株式会社 | Information carrying means, method and communication system |
| CN109246829A (en) * | 2017-11-17 | 2019-01-18 | 华为技术有限公司 | Communication means and communication equipment |
| CN110291822A (en) * | 2017-02-14 | 2019-09-27 | 瑞典爱立信有限公司 | Synchronization signal selection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103108389A (en) * | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Communication method and communication system from device to device and user devices |
| CN103190164A (en) * | 2010-11-04 | 2013-07-03 | 交互数字专利控股公司 | Method and apparatus for establishing peer-to-peer communication |
| WO2014018333A2 (en) * | 2012-07-23 | 2014-01-30 | Interdigital Patent Holdings, Inc. | Methods and apparatus for frequency synchronization, power control, and cell configuration for ul-only operation in dss bands |
-
2014
- 2014-02-27 CN CN201410070394.8A patent/CN104883728B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103190164A (en) * | 2010-11-04 | 2013-07-03 | 交互数字专利控股公司 | Method and apparatus for establishing peer-to-peer communication |
| CN103108389A (en) * | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Communication method and communication system from device to device and user devices |
| WO2014018333A2 (en) * | 2012-07-23 | 2014-01-30 | Interdigital Patent Holdings, Inc. | Methods and apparatus for frequency synchronization, power control, and cell configuration for ul-only operation in dss bands |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615829B (en) * | 2015-09-25 | 2020-06-26 | 华为技术有限公司 | Paging method, synchronization method and user equipment |
| WO2017049606A1 (en) * | 2015-09-25 | 2017-03-30 | 华为技术有限公司 | Paging method, synchronization method, and user equipment |
| CN107615829A (en) * | 2015-09-25 | 2018-01-19 | 华为技术有限公司 | Paging method, synchronous method and user equipment |
| US10609675B2 (en) | 2015-09-25 | 2020-03-31 | Huawei Technologies Co., Ltd. | Paging method, synchronization method, and user equipment for device to device communication |
| CN108141699A (en) * | 2015-10-08 | 2018-06-08 | 瑞典爱立信有限公司 | Device-to-device operation under the no network coverage |
| CN106912073A (en) * | 2015-12-23 | 2017-06-30 | 上海贝尔股份有限公司 | A kind of wireless communications method and equipment |
| CN106912073B (en) * | 2015-12-23 | 2020-01-24 | 上海诺基亚贝尔股份有限公司 | Wireless communication method and device |
| WO2017124338A1 (en) * | 2016-01-20 | 2017-07-27 | 华为技术有限公司 | Method and apparatus for sending synchronization information |
| US10925026B2 (en) | 2016-01-20 | 2021-02-16 | Huawei Technologies Co., Ltd. | Synchronization information sending method and apparatus |
| WO2017193350A1 (en) * | 2016-05-12 | 2017-11-16 | 华为技术有限公司 | Information transmission method and user equipment |
| US11018800B2 (en) | 2016-05-12 | 2021-05-25 | Huawei Technologies Co., Ltd. | Information transmission method and user equipment |
| CN109076639A (en) * | 2016-05-13 | 2018-12-21 | 富士通株式会社 | Information carrying means, method and communication system |
| WO2018010267A1 (en) * | 2016-07-14 | 2018-01-18 | 中兴通讯股份有限公司 | Communication method and terminal |
| CN110291822A (en) * | 2017-02-14 | 2019-09-27 | 瑞典爱立信有限公司 | Synchronization signal selection |
| CN110291822B (en) * | 2017-02-14 | 2021-12-10 | 瑞典爱立信有限公司 | Synchronization signal selection |
| CN109246829A (en) * | 2017-11-17 | 2019-01-18 | 华为技术有限公司 | Communication means and communication equipment |
| US12004095B2 (en) | 2017-11-17 | 2024-06-04 | Huawei Technologies Co., Ltd. | Communication method and communications device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104883728B (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104883728A (en) | Transmission method in D2D communication, and device thereof | |
| JP5575946B2 (en) | Method and apparatus for transmitting information by selection of resources used for transmission | |
| KR101852891B1 (en) | Synchronization signal carrying method and user equipment | |
| EP4236160A3 (en) | Broadcast of information for new carrier type | |
| CN108401290B (en) | Paging method and base station | |
| JP5753944B2 (en) | Transmission and reception methods and devices | |
| CN116192583A (en) | Method and device for information transmission and information reception | |
| CN104703164A (en) | Method of acquiring synchronous references, method of transmitting synchronous information and equipment | |
| MX2021005645A (en) | Prioritized low power neighboring node discovery in an iot network. | |
| CN104541536A (en) | Method, user equipment and base station for detecting device to device signals | |
| CN105263188A (en) | Method and device for transmitting information through synchronous channel, information detecting method of synchronous channel and information detecting device of synchronous channel | |
| KR20160062091A (en) | UE Device and Method | |
| CN109391410B (en) | Indication and determination method of synchronous signal block transmission information, base station and terminal | |
| CN106231561B (en) | Positioning method and device | |
| US20190082409A1 (en) | Synchronisation method, terminal and network device | |
| US10448315B2 (en) | Method for indicating physical cell identifier and apparatus | |
| US11943833B2 (en) | Method for discovery signalling, related network node and related wireless electronic device | |
| US20190319763A1 (en) | Method and device for transmitting measurement pilot signal | |
| CN102158865A (en) | Cell system information acquisition method and device | |
| JP2022517047A (en) | Signaling method for D2D synchronization | |
| CN107947908B (en) | Synchronization signal sending method, synchronization signal receiving method, network equipment and terminal equipment | |
| US20190166582A1 (en) | Method for transmitting system information, network device, and terminal device | |
| CN102571672B (en) | Coordinated multipoint transmission downlink synchronization method and device | |
| JPWO2014181443A1 (en) | Communication system, transmitting station, receiving station, and communication method | |
| CN113259876A (en) | Remote adjustment method for resolution of advertising board of Internet of things |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240115 Address after: 518040 unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Xiangmihu street, Futian District, Shenzhen, Guangdong Province Patentee after: Honor Device Co.,Ltd. Address before: Room A2117, Building B, 555 Dongchuan Road, Minhang District, Shanghai, 200240 Patentee before: SHANGHAI LANGBO COMMUNICATION TECHNOLOGY Co.,Ltd. |