CN104469926A - Transmission method and device in D2D system - Google Patents
Transmission method and device in D2D system Download PDFInfo
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- CN104469926A CN104469926A CN201310422084.3A CN201310422084A CN104469926A CN 104469926 A CN104469926 A CN 104469926A CN 201310422084 A CN201310422084 A CN 201310422084A CN 104469926 A CN104469926 A CN 104469926A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 46
- 230000011664 signaling Effects 0.000 claims description 53
- 230000001360 synchronised effect Effects 0.000 claims description 18
- 238000004891 communication Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 10
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
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Abstract
The invention discloses a transmission method and device in a D2D system. The invention provides a SRS scheme in the D2D communication. In one embodiment, UE (user equipment) sends the SRS with lengthened cyclic prefix to avoid the interference caused by propagation delay. Through the adoption of the technical scheme provided in the invention, the interference between the D2S-SRS among a plurality of UE in D2D communication and the interference of D2D-SRS and D2D data are avoided; and meanwhile, the compatibility of the existing is maximally maintained.
Description
Technical field
The present invention relates to the scheme that interception reference signal in D2D system (SRS-Sounding ReferenceSignal) transmits, particularly relate to based on the SRS transmission scheme of Long Term Evolution (LTE-Long TermEvolution) device to device (D2D-Device to Device) framework.
Background technology
In traditional third generation partner program (3GPP-3rd Generation PartnerProject) Long Term Evolution (LTE-Long Term Evolution) system, define two kinds of frame structures, i.e. the frame structure 1 of Frequency Division Duplexing (FDD) (FDD-Frequency Division Duplex) system and the frame structure 2 of time division duplex (TDD-Time Division Duplex) system.The two difference is that each subframe of FDD frame structure is 1 millisecond (ms-millisecond); and TDD system defines 1 ~ 2 special subframe in each frame (10 subframes); special subframe is by downlink synchronization slot (DwPTS-Downlink Pilot Time Slot); protection interval (GP-Guard Period), uplink synchronous time slot (UpPTS-Uplink Pilot Time Slot) three part is formed.
LTE system have employed interception reference signal (SRS-Sounding Reference Signal) and makes system equipment side can obtain up channel parameter (and down channel parameters of TDD system), for the subframe of FDD and the normal sub-frames of TDD, SRS in the end single carrier frequency division multiplexing (SC-FDMA:Single Carrier – Frequency Division Multiple Access) symbol sends, at the special subframe of TDD, SRS can take symbol in one or two UpPTS (special subframe last or two symbols).LTE system supports semi-persistent scheduling (SPS-Semi-persistent Scheduling) SRS and dynamic dispatching (DS-DynamicScheduling) SRS.The SRS resource that LTE indicates current area reserved by (community is public) RRC signaling SoundingRS-UL-ConfigCommon information particle (IE-Information Element).Reserved SRS and SRS bandwidth is contained in described SoundingRS-UL-ConfigCommon.
In traditional 3GPP version, transfer of data occurs between base station and subscriber equipment (UE-UserEquipment).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.For FDD and TDD system, the conclusion that 3GPP reaches wireless access network first working group the 73rd meeting (RAN1#73) is: the UE in D2D system does not allow to receive and dispatch simultaneously.Further, in order to avoid the interference that downlink data communicates to D2D, the sub-frame of uplink of upstream band and subframe (TDD) that UE takies traditional ascending resource and FDD is used for D2D and communicates (TDD descending sub frame needs to be discussed further).
In D2D communication, in order to make transmission UE obtain itself and the channel characteristics that receives between UE, a reasonable approach receives UE to send SRS, in order to distinguish with traditional SRS, is called D2D-SRS in the present invention by being used for the SRS that UE receives.The reference synchronization of traditional SRS is the uplink receiving time of base station side, and the SRS from multiple UE that namely receiver of traditional SRS receives is synchronous.For D2D communication, may there is multiple reception UE in one group of D2D-SRS, therefore cannot keep synchronous with described multiple reception UE.Further, the time that the many groups D2D-SRS sent by different UEs arrives same UE also cannot keep synchronous, and how multiplexing many group D2D-SRS also need solution.
For the problems referred to above, the invention discloses the D2D-SRS scheme in a kind of D2D system.
Summary of the invention
The invention discloses the method in a kind of subscriber equipment (UE), wherein, comprise the steps:
-receive or send the first signaling
-synchronous first resource
-on first resource transmitting apparatus to equipment interception reference signal (D2D-SRS)
Wherein, the first signaling indicates the subframe that first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
First signaling is semi-static signaling or dynamic signaling, and first resource determined by time-domain and frequency domain two dimensions, and described synchronous first resource refers to the point of the absolute starting times in time-domain according to reference synchronization determination first resource.Possible reference synchronization comprises: cell timing, a UE timing, multiple UE timing, external definition-such as global positioning system (GPS-GlobalPosition System).Described T1 is 2048Ts; For normal cyclic prefix subframe, described T2 is the corresponding T2 of first symbol of each time slot of 144Ts or 160Ts(is 160Ts, and other are 144Ts); For extended cyclic prefix subframe, described T2 is 512Ts, and wherein Ts is 1/30720 millisecond (ms-millisecond).The duration of first resource and described D2D-SRS is continuous print.Described symbol is single-carrier frequency division multiple access (SC-FDMA) symbol or OFDM (OFDM-Orthogonal Frequency Division Multiplexing) symbol.
The subframe that first signaling can show or the hidden instruction first resource shown takies, as an embodiment, first signaling is dynamic dispatching signaling, wherein comprise the transmitting-receiving of information bit scheduling D2D data, be predefined in dispatched D2D data transmit-receive subframe (or also comprising adjacent sub-frame) and send D2D-SRS, the parameter of relevant D2D-SRS is configured by semi-static mode; As an embodiment, first signaling is dynamic dispatching signaling, wherein comprise the transmitting-receiving of information bit scheduling D2D data, whether send D2D-SRS by the instruction of D2D-SRS toggle bit in dispatched D2D data transmit-receive subframe (or also comprising adjacent sub-frame), the parameter of relevant D2D-SRS is configured by semi-static mode; As another embodiment, the first signaling is semi-static configuration signal, wherein contains the information bit for D2D-SRS sub-frame configuration.Before described D2D-SRS Cyclic Prefix is positioned at described D2D-SRS basic sequence, it is the signal intercepted from described D2D-SRS basic sequence afterbody.
Concrete, according to an aspect of the present invention, it is characterized in that, first resource spans adjacent two symbols in time-domain.
Concrete, according to a further aspect of the invention, it is characterized in that, the duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, duration of the D2D-SRS Cyclic Prefix that described D2D-SRS basic sequence is corresponding is one of following:
-2T-T1-2Ds+16=1088Ts
-2T-T1-Ds=1712Ts
-2T-T1-Ds+16=1728Ts
Wherein Ds is the reiving/transmitting state handoff delay of UE; according to 3GPP RAN#74 meeting; Ds value is 624Ts; Ts is 1/30720 millisecond (ms-millisecond); T is 2192Ts; 16 represent that D2D-SRS occupies first symbol of a subframe, and 2Ds represents that the two ends of D2D-SRS respectively have one to protect interval.
Concrete, according to above-mentioned two aspects of the present invention, it is characterized in that, described adjacent two symbols is one of following:
A. latter two symbol of a subframe, or
B. last symbol of previous subframe and first symbol of a rear subframe
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, the reference synchronization of first resource is one of following:
-obtain according to cell timing
-D2D finds the transmission timing of signal (Discovery Signal)
The transmission timing of-macrocell Physical Uplink Shared Channel (PUSCH)
The UE that described cell timing is applicable to carry out D2D-SRS transmission is in the scene in cell coverage area, its specific implementation puies forward previous side-play amount again according to the synchronizing signal of the base station equipment received to obtain, described side-play amount is obtained by the way that base station is auxiliary, or estimate to draw according to downstream signal intensity, or predefine fixed value.
The reference synchronization of first resource equals described D2D and finds that the transmission timing of signal (Discovery Signal) is applicable to scene more widely, and the UE such as sending D2D-SRS is in cell coverage area or outside cell coverage area; Described D2D finds that the transmission timing of signal (DiscoverySignal) needs the further definition of 3GPP, and possible reference synchronization comprises: cell timing, bunch head timing, relaying UE timing etc.
The transmission timing of macrocell PUSCH is that TA, described TA are the propagation delays from base station to UE in advance again based on base station timing.When described adjacent two symbols is above-mentioned A and described adjacent two symbols is positioned at D2D communication subframe, macrocell PUSCH sends timing and D2D-SRS and D2D data may be made to produce interference.As an embodiment, the D2D-SRS that the UE1 being in cell edge sends at latter two symbol of subframe n, the D2D data that the UE2 being in center of housing estate sends on third from the bottom the symbol of subframe n, UE3 receives from the D2D data of UE2 and UE3 distance UE1 equal with the distance of UE2 (namely propagation delay is identical), the then D2D data from UE2 that receive of UE3 and have overlapping (namely the disturbing) of Ta from the D2D-SRS of UE1, described Ta is the transmission lead of UE1.Thus the transmission timing of macrocell PUSCH is more suitable for described adjacent two symbols and is above-mentioned B and described previous subframe is non-D2D communicates the scene of subframe.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, described previous subframe is configured to non-D2D subframe.Described non-D2D subframe refers to the subframe can not receiving and dispatching D2D data.
A benefit of reusing the SRS resource transmission D2D-SRS of non-D2D subframe before D2D-SRS, does not need reserved protection interval, because UE can not monitor the upstream data of macrocell.For macrocell UE, if its distribute SRS resource with D2D-SRS resource not on identical running time-frequency resource, therefore with existing system keep compatibility.
Concrete, according to an aspect of the present invention, it is characterized in that, the repetition factor of described D2D-SRS basic sequence in time-domain (RPF-Repetition Factor) integer for being greater than 2.Described RPF refers to the number of times repeated in time-domain, corresponding frequency domain takies at equal intervals the gap size of subcarrier.
The invention discloses the method in a kind of subscriber equipment (UE), wherein, comprise the steps:
-receive or send the first signaling
-synchronous Secondary resource
-on Secondary resource, receive D2D-SRS basic sequence
Wherein, the subframe that the first signaling instruction Secondary resource takies, the duration of Secondary resource is T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
Concrete, according to an aspect of the present invention, it is characterized in that, described adjacent two symbols is latter two symbol of a subframe.
Concrete, according to an aspect of the present invention, it is characterized in that, described adjacent two symbols is last symbol of previous subframe and first symbol of a rear subframe.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, described previous subframe is configured to non-D2D subframe.
Concrete, according to above-mentioned aspect of the present invention, it is characterized in that, the described D2D-SRS basic sequence repetition factor in time-domain (RPF) integer for being greater than 2.
For receiving the UE of D2D-SRS, the reference synchronization of Secondary resource realizes relevant, and as an embodiment, the reference synchronization of Secondary resource is one of following:
-obtain according to cell timing
-D2D finds the transmission timing of signal (Discovery Signal)
The transmission timing of-macrocell Physical Uplink Shared Channel (PUSCH).
The invention discloses the method in a kind of subscriber equipment (UE), wherein, comprise the steps:
-send the first subframe of taking of signaling instruction D2D-SRS,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
The invention discloses a kind of method in system equipment, wherein, comprise the steps:
-send the first subframe of taking of signaling instruction D2D-SRS,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
The invention discloses a kind of subscriber equipment (UE), it is characterized in that, this equipment comprises:
First module: receive or send the first signaling
Second module: synchronous first resource
3rd module: transmitting apparatus is to equipment interception reference signal (D2D-SRS) on first resource
Wherein, the first signaling indicates the subframe that first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
As an embodiment, the feature of the said equipment is, first resource spans adjacent two symbols in time-domain.
As an embodiment, the feature of the said equipment is, the duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain.
The invention discloses a kind of subscriber equipment (UE), it is characterized in that, this equipment comprises:
First module: receive or send the first signaling
Second module: synchronous Secondary resource
3rd module: receive D2D-SRS basic sequence on Secondary resource
Wherein, the subframe that the first signaling instruction Secondary resource takies, the duration of Secondary resource is T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
The invention discloses a kind of subscriber equipment (UE), it is characterized in that, this equipment comprises:
First module: send the subframe that the first signaling instruction D2D-SRS takies,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
The invention discloses a kind of system equipment, it is characterized in that, this equipment comprises:
First module: send the subframe that the first signaling instruction D2D-SRS takies,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
The invention solves the interference problem of D2D-SRS in D2D system, for this problem, the Cyclic Prefix lengthened by design avoids the interference that propagation delay brings, and the present invention at utmost maintains the compatibility with existing system.
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 schematic diagram that D2D-SRS according to an embodiment of the invention takies latter two symbol of a subframe;
Fig. 2 shows the schematic diagram that D2D-SRS according to an embodiment of the invention takies last symbol of previous subframe and first symbol of a rear subframe;
Fig. 3 shows the schematic diagram that D2D-SRS basic sequence adopted value according to an embodiment of the invention is the RPF of 4;
Fig. 4 shows the schematic diagram that the UE be in cell coverage area according to an embodiment of the invention sends the reference synchronization of D2D-SRS;
Fig. 5 shows the schematic diagram that the UE be in outside cell coverage area according to an embodiment of the invention sends the reference synchronization of D2D-SRS;
Fig. 6 shows D2D-SRS scheduling flow figure according to an embodiment of the invention;
Fig. 7 shows the D2D-SRS transmission processing apparatus structure block diagram in subscriber equipment according to an embodiment of the invention;
Fig. 8 shows the D2D-SRS receiving and processing device structured flowchart in subscriber equipment according to an 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 latter two symbol that D2D-SRS takies a subframe, as shown in Figure 1.
In embodiment 1, first UE receives the subframe that the first signaling determination first resource takies is subframe n; Then according to the synchronous first resource of reference synchronization, namely determine in latter two symbol of described subframe n for transmitting the absolute starting point of resource in time-domain of D2D-SRS; Then on first resource, D2D-SRS is sent.
Wherein, described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix, and the duration of described D2D-SRS basic sequence is 2048Ts, Ts is 1/30720 millisecond.According to the difference of the duration of described D2D-SRS Cyclic Prefix, in embodiment 1, further illustrate the structure that in time-domain 4 kinds of D2D-SRS are possible.
In accompanying drawing 1-(I), D2D-SRS occupies a part before a part of of previous symbol and a rear symbol below in time-domain.
In accompanying drawing 1-(II), D2D-SRS occupies a part before the whole of previous symbol and a rear symbol in time-domain.
In accompanying drawing 1-(III), D2D-SRS occupies the whole of the whole of previous symbol and a rear symbol in time-domain.
In accompanying drawing 1-(IV), D2D-SRS occupies a part below for previous symbol and the whole of a rear symbol in time-domain.
In accompanying drawing 1-(I) ~ (IV), backslash represents D2D-SRS Cyclic Prefix, and grey represents D2D-SRS basic sequence, blank parts do not send signal-as protection interval for absorbing transceiver state handoff delay.The total length of two symbols is (2192*2) Ts, if described protection is spaced apart 624Ts, the duration of the D2D-SRS Cyclic Prefix in accompanying drawing 1-(I) ~ (IV) is respectively: 1088Ts, 1712Ts, 2336Ts, 2172Ts.
Embodiment 2
Embodiment 2 illustrates D2D-SRS and takies last symbol of previous subframe and first symbol of a rear subframe, as shown in Figure 2.
In embodiment 2, first UE sends the first subframe of taking of signaling instruction first resource is subframe n and subframe n-1; Then according to the synchronous first resource of reference synchronization, namely determine in last symbol of shared last subframe and the last symbol of a rear subframe for transmitting the absolute starting point of resource in time-domain of D2D-SRS; Then on first resource, D2D-SRS is sent.
Wherein, described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix, and the duration of described D2D-SRS basic sequence is 2048Ts, Ts is 1/30720 millisecond.According to the difference of the duration of described D2D-SRS Cyclic Prefix, in embodiment 2, further illustrate the structure that in time-domain 4 kinds of D2D-SRS are possible.
In accompanying drawing 2-(I), D2D-SRS occupies a part before a part of of previous symbol and a rear symbol below in time-domain.
In accompanying drawing 2-(II), D2D-SRS occupies a part before the whole of previous symbol and a rear symbol in time-domain.
In accompanying drawing 2-(III), D2D-SRS occupies the whole of the whole of previous symbol and a rear symbol in time-domain.
In accompanying drawing 2-(IV), D2D-SRS occupies a part below for previous symbol and the whole of a rear symbol in time-domain.
In accompanying drawing 2-(I) ~ (IV), backslash represents D2D-SRS Cyclic Prefix, and grey represents D2D-SRS basic sequence, blank parts do not send signal-as protection interval for absorbing transceiver state handoff delay.The total length of two symbols is (2192*2+16) Ts, if described protection is spaced apart 624Ts, the duration of the D2D-SRS Cyclic Prefix in accompanying drawing 2-(I) ~ (IV) is respectively: 1104Ts, 1728Ts, 2352Ts, 2188Ts.
Embodiment 3
Embodiment 3 illustrates the schematic diagram that D2D-SRS basic sequence adopted value is the RPF of 4, as shown in Figure 3.In accompanying drawing 3, backslash represents D2D-SRS Cyclic Prefix, and grey represents D2D-SRS basic sequence, and blank parts does not send signal-conduct protection interval.
In embodiment 3, first UE receives the subframe that the first signaling determination Secondary resource takies; Then according to the synchronous Secondary resource of reference synchronization, the absolute starting point of resource in time-domain transmitting D2D-SRS basic sequence in latter two symbol of shared subframe is namely determined; Then on Secondary resource, D2D-SRS basic sequence is received.
Described D2D-SRS basic sequence 3 sub-carrier occupancies subcarrier at equal intervals in a frequency domain, namely RPF is 4.The RPF increased means that a symbol can multiplexing more D2D-SRS basic sequence.And the SRS of traditional code division multiplexing may run into the problem of near-far interference in D2D communication.
Embodiment 4
Embodiment 4 illustrates the schematic diagram that the UE be in cell coverage area sends the reference synchronization of D2D-SRS, as shown in Figure 4.
In embodiment 4, first the UE be in cell coverage area sends the subframe that the first signaling instruction Secondary resource takies; Then according to the synchronous Secondary resource of reference synchronization; Then on Secondary resource, D2D-SRS basic sequence is received.
Described reference synchronization obtains according to cell timing, is namely putting forward previous side-play amount according to the cell downlink signal timing received.Described side-play amount is by signal deployment, or predetermined configuration.If described side-play amount is TA namely adopt cell timing, then the transmitting time of D2D-SRS and the transmitting time of base station are coincide, and UE all in community has identical D2D-SRS transmitting time on Secondary resource.If described side-play amount is 2TA, then described reference synchronization Shi Hong community PUSCH timing.
Embodiment 5
Embodiment 5 illustrates the schematic diagram that the UE be in outside cell coverage area sends the reference synchronization of D2D-SRS, as shown in Figure 5.
In embodiment 5, first the UE be in outside cell coverage area receives the subframe that the first signaling instruction first resource takies; Then according to the synchronous first resource of reference synchronization; Then on first resource, D2D-SRS is sent.
Described reference synchronization obtains according to the timing of bunch head UE, is namely carrying previous side-play amount Tc according to synchronizing signal (such as D2D the finds signal) timing of bunch head UE received.Described side-play amount Tc is by signal deployment, or predetermined configuration.
Embodiment 6
Embodiment 6 illustrates D2D-SRS scheduling flow figure, as shown in Figure 6.In accompanying drawing 6, equipment 17 sends the transmitting-receiving of signaling scheduling D2D-SRS, and UE U18 sends D2D-SRS, UE U19 and receives D2D-SRS, and equipment 17 is UE or system equipment.
For equipment 17, in step S171, send the subframe that the first signaling instruction D2D-SRS takies, wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
For U18, in step S181, receive the first signaling, in step S182, synchronous first resource, in step S183, on first resource, transmitting apparatus is to equipment interception reference signal (D2D-SRS), wherein, and the subframe that the first signaling instruction first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
For U19, in step S191, receive the first signaling, in step S192, synchronous Secondary resource, in step S193, Secondary resource receives D2D-SRS basic sequence, wherein, the subframe that first signaling instruction Secondary resource takies, the duration of Secondary resource is T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
Embodiment 7
Embodiment 7 illustrates the D2D-SRS transmission processing apparatus structure block diagram in subscriber equipment, as shown in Figure 7.In accompanying drawing 7, the processing unit 400 in UE is made up of the first signalling module 401, second synchronization module the 402, three sending module 403.
In processing unit 400, the first signalling module 401 receives the first signaling, the synchronous first resource of the second synchronization module 402, the 3rd sending module 403 on first resource transmitting apparatus to equipment interception reference signal (D2D-SRS).Wherein, the first signaling indicates the subframe that first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
Above-mentioned first resource spans adjacent two symbols in time-domain, and further, the duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain.
Embodiment 8
Embodiment 8 illustrates the D2D-SRS receiving and processing device structured flowchart in subscriber equipment, as shown in Figure 8.In accompanying drawing 8, the processing unit 500 in UE is made up of the first signalling module 501, second synchronization module the 502, three receiver module 503.
In processing unit 500, the first signalling module 501 sends the first signaling, and the synchronous Secondary resource of the second synchronization module 502, the 3rd receiver module 503 receives D2D-SRS basic sequence on Secondary resource.Wherein, the first signaling indicates the subframe that Secondary resource takies; The duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
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 (21)
1. the method in subscriber equipment (UE), wherein, comprises the steps:
-receive or send the first signaling
-synchronous first resource
-on first resource transmitting apparatus to equipment interception reference signal (D2D-SRS)
Wherein, the first signaling indicates the subframe that first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
2. method according to claim 1, is characterized in that, first resource spans adjacent two symbols in time-domain.
3. method according to claim 1, is characterized in that, the duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain.
4. according to claim 2, the method described in 3, is characterized in that, described adjacent two symbols is latter two symbol of a subframe.
5. according to claim 2, the method described in 3, is characterized in that, described adjacent two symbols is last symbol of previous subframe and first symbol of a rear subframe.
6. method according to claim 1, is characterized in that, the reference synchronization of first resource is one of following:
-obtain according to cell timing
-D2D finds the transmission timing of signal (Discovery Signal)
The transmission timing of-macrocell Physical Uplink Shared Channel (PUSCH).
7. method according to claim 3, is characterized in that, duration of the D2D-SRS Cyclic Prefix that described D2D-SRS basic sequence is corresponding is one of following:
-1088Ts
-1712Ts
-1728Ts
Wherein Ts is 1/30720 millisecond (ms-millisecond).
8. method according to claim 5, is characterized in that, described previous subframe is configured to non-D2D subframe.
9. the method in subscriber equipment (UE), wherein, comprises the steps:
-receive or send the first signaling
-synchronous Secondary resource
-on Secondary resource, receive D2D-SRS basic sequence
Wherein, the subframe that the first signaling instruction Secondary resource takies, the duration of Secondary resource is T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
10. method according to claim 9, is characterized in that, described adjacent two symbols is latter two symbol of a subframe.
11. methods according to claim 9, is characterized in that, described adjacent two symbols is last symbol of previous subframe and first symbol of a rear subframe.
12. methods according to claim 11, is characterized in that, described previous subframe is configured to non-D2D subframe.
13. according to claim 1, and the method described in 9, is characterized in that, the described D2D-SRS basic sequence repetition factor in time-domain (RPF) integer for being greater than 2.
Method in 14. 1 kinds of subscriber equipmenies (UE), wherein, comprises the steps:
-send the first subframe of taking of signaling instruction D2D-SRS,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
Method in 15. 1 kinds of system equipments, wherein, comprises the steps:
-send the first subframe of taking of signaling instruction D2D-SRS,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
16. 1 kinds of subscriber equipmenies (UE), it is characterized in that, this equipment comprises:
First module: receive or send the first signaling
Second module: synchronous first resource
3rd module: transmitting apparatus is to equipment interception reference signal (D2D-SRS) on first resource
Wherein, the first signaling indicates the subframe that first resource takies; The duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
17. equipment according to claim 16, it is characterized in that, first resource spans adjacent two symbols in time-domain.
18. equipment according to claim 16, is characterized in that, the duration of described D2D-SRS basic sequence is described T1, and spans adjacent two symbols in time-domain.
19. 1 kinds of subscriber equipmenies (UE), it is characterized in that, this equipment comprises:
First module: receive or send the first signaling
Second module: synchronous Secondary resource
3rd module: receive D2D-SRS basic sequence on Secondary resource
Wherein, the subframe that the first signaling instruction Secondary resource takies, the duration of Secondary resource is T1, and spans adjacent two symbols in time-domain, and described T1 is the duration of a symbol.
20. 1 kinds of subscriber equipmenies (UE), it is characterized in that, this equipment comprises:
First module: send the subframe that the first signaling instruction D2D-SRS takies,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
21. 1 kinds of system equipments, is characterized in that, this equipment comprises:
First module: send the subframe that the first signaling instruction D2D-SRS takies,
Wherein, the duration of described D2D-SRS is greater than T and is less than or equal to 2T, described T equal T1 and T2 and, described T1 is the duration of a symbol, and described T2 is the duration of corresponding cyclic prefix; Described D2D-SRS is made up of D2D-SRS basic sequence and D2D-SRS Cyclic Prefix.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169208A1 (en) * | 2014-05-06 | 2015-11-12 | 电信科学技术研究院 | Synchronization processing method and user equipment |
| CN106454995A (en) * | 2015-08-10 | 2017-02-22 | 上海贝尔股份有限公司 | Method for configuring relay discovering information transmission resource, corresponding relay terminal equipment and remote terminal equipment |
| CN107431915A (en) * | 2015-03-31 | 2017-12-01 | 高通股份有限公司 | For managing system, the method and apparatus of the relay connection in cordless communication network |
| WO2018024206A1 (en) * | 2016-08-05 | 2018-02-08 | 上海朗帛通信技术有限公司 | Method and device used in low latency communication of user equipment and base station |
| CN111279768A (en) * | 2017-09-28 | 2020-06-12 | 联想(北京)有限公司 | Method and apparatus for sounding reference signal transmission on sidelink |
| WO2020124485A1 (en) * | 2018-12-20 | 2020-06-25 | 北京小米移动软件有限公司 | Data transmission method and apparatus |
| CN112291746A (en) * | 2018-06-29 | 2021-01-29 | Oppo广东移动通信有限公司 | Data transmission method and terminal equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505485A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Method and apparatus for sending SRS in LTE TDD system |
| CN101772031A (en) * | 2009-01-06 | 2010-07-07 | 大唐移动通信设备有限公司 | Method and device for allocating sounding reference signal transmission resources |
| CN101882942A (en) * | 2009-05-07 | 2010-11-10 | 中国移动通信集团公司 | Sounding reference signal (SRS) sending/receiving method, mobile communication terminal and base station |
| CN103108405A (en) * | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Method and system of wireless communication |
| US20130195002A1 (en) * | 2012-01-30 | 2013-08-01 | Qualcomm Incorporated | Cyclic prefix in evolved multimedia broadcast multicast service with high transmit power |
-
2013
- 2013-09-16 CN CN201310422084.3A patent/CN104469926B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505485A (en) * | 2008-02-05 | 2009-08-12 | 三星电子株式会社 | Method and apparatus for sending SRS in LTE TDD system |
| CN101772031A (en) * | 2009-01-06 | 2010-07-07 | 大唐移动通信设备有限公司 | Method and device for allocating sounding reference signal transmission resources |
| CN101882942A (en) * | 2009-05-07 | 2010-11-10 | 中国移动通信集团公司 | Sounding reference signal (SRS) sending/receiving method, mobile communication terminal and base station |
| CN103108405A (en) * | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Method and system of wireless communication |
| US20130195002A1 (en) * | 2012-01-30 | 2013-08-01 | Qualcomm Incorporated | Cyclic prefix in evolved multimedia broadcast multicast service with high transmit power |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169208A1 (en) * | 2014-05-06 | 2015-11-12 | 电信科学技术研究院 | Synchronization processing method and user equipment |
| CN107431915B (en) * | 2015-03-31 | 2020-10-30 | 高通股份有限公司 | System, method and apparatus for managing relay connections in a wireless communication network |
| CN107431915A (en) * | 2015-03-31 | 2017-12-01 | 高通股份有限公司 | For managing system, the method and apparatus of the relay connection in cordless communication network |
| US10674425B2 (en) | 2015-03-31 | 2020-06-02 | Qualcomm Incorporated | Systems, methods, and apparatus for managing a relay connection in a wireless communications network |
| CN106454995A (en) * | 2015-08-10 | 2017-02-22 | 上海贝尔股份有限公司 | Method for configuring relay discovering information transmission resource, corresponding relay terminal equipment and remote terminal equipment |
| WO2018024206A1 (en) * | 2016-08-05 | 2018-02-08 | 上海朗帛通信技术有限公司 | Method and device used in low latency communication of user equipment and base station |
| CN107690188A (en) * | 2016-08-05 | 2018-02-13 | 上海朗帛通信技术有限公司 | It is a kind of be wirelessly transferred in method and apparatus |
| CN107690188B (en) * | 2016-08-05 | 2019-12-24 | 上海朗帛通信技术有限公司 | Method and device in wireless transmission |
| CN111279768A (en) * | 2017-09-28 | 2020-06-12 | 联想(北京)有限公司 | Method and apparatus for sounding reference signal transmission on sidelink |
| CN111279768B (en) * | 2017-09-28 | 2023-11-14 | 联想(北京)有限公司 | Method and apparatus for sounding reference signal transmission on a side link |
| CN112291746A (en) * | 2018-06-29 | 2021-01-29 | Oppo广东移动通信有限公司 | Data transmission method and terminal equipment |
| US11930504B2 (en) | 2018-06-29 | 2024-03-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data transmission method and terminal device |
| WO2020124485A1 (en) * | 2018-12-20 | 2020-06-25 | 北京小米移动软件有限公司 | Data transmission method and apparatus |
| US11937224B2 (en) | 2018-12-20 | 2024-03-19 | Beijing Xiaomi Mobile Software Co., Ltd. | Data transmission method and apparatus |
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