CN104469926B - A transmission method and device in a D2D system - Google Patents
A transmission method and device in a D2D system Download PDFInfo
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- CN104469926B CN104469926B CN201310422084.3A CN201310422084A CN104469926B CN 104469926 B CN104469926 B CN 104469926B CN 201310422084 A CN201310422084 A CN 201310422084A CN 104469926 B CN104469926 B CN 104469926B
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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
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- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
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Abstract
Transmission method and device in a kind of D2D system.The invention proposes the schemes of SRS in D2D communication a kind of.In one embodiment, UE is sent, and there is the SRS for lengthening cyclic prefix to avoid the interference of propagation delay bring.By using technical solution provided in the present invention, the interference between the D2D-SRS between the multiple UE for carrying out D2D communication and the interference of D2D-SRS and D2D data are avoided, while the present invention utmostly maintains the compatibility with existing system.
Description
Technical field
The present invention relates to interception reference signal in D2D system (SRS-Sounding Reference Signal) transmission
Scheme, more particularly to based on long term evolution (LTE-Long Term Evolution) device to device (D2D-Device to
Device) the SRS transmission scheme of framework.
Background technique
Traditional third generation cooperative partner program (3GPP-3rd Generation Partner Project) long term evolution
In (LTE-Long Term Evolution) system, two kinds of frame structures, i.e. frequency division duplex (FDD-Frequency are defined
Division Duplex) frame structure 1 of system and the frame structure of time division duplex (TDD-Time Division Duplex) system
2.The difference of the two is that each subframe of FDD frame structure is 1 millisecond (ms-millisecond), and TDD system is in each frame
1~2 special subframe is defined in (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 parts are constituted.
LTE system uses interception reference signal (SRS-Sounding Reference Signal) and makes system equipment
Side can obtain up channel parameter (and down channel parameters of TDD system), the normal sub-frames of subframe and TDD for FDD,
SRS is multiplexed (SC-FDMA:Single Carrier-Frequency Division in the last one single carrier frequency division
Multiple Access) it sends on symbol, in the special subframe of TDD, SRS can occupy the symbol in one or two UpPTS
(special subframe the last one or two symbols).LTE system supports semi-persistent scheduling (SPS-Semi-persistent
Scheduling) SRS and dynamic dispatching (DS-Dynamic Scheduling) SRS.LTE passes through (cell is public) RRC signaling
SoundingRS-UL-ConfigCommon information particle (IE-Information Element) indicates what current area was reserved
SRS resource.Reserved SRS subframe and SRS bandwidth are contained in the SoundingRS-UL-ConfigCommon.
In traditional 3GPP version, data transmission occurs between base station and user equipment (UE-User Equipment).
In 3GPP R12, device is set up the project and is discussed to device (D2D-Device to Device) communication, and the essence of D2D is special
Point is that the data between UE is allowed to transmit.For FDD and TDD system, 3GPP is in the first working group of wireless access network the 73rd
The conclusion that secondary meeting (RAN1#73) is reached is: the UE in D2D system does not allow to receive and dispatch simultaneously.Further, in order to avoid downlink
The interference that data communicate D2D, UE occupy the sub-frame of uplink of the traditional ascending resource i.e. upstream band of FDD and subframe (TDD)
(TDD downlink subframe needs to be further discussed) is communicated for D2D.
In D2D communication, its channel characteristics between reception UE is obtained in order to make to send UE, a reasonable approach is to connect
It receives UE and sends SRS, in order to be distinguished with traditional SRS, the received SRS of UE will be used in the present invention and be known as D2D-SRS.Traditional
The synchronous reference of SRS is the uplink receiving time of base station side, i.e. the SRS from multiple UE that the receiver of tradition SRS receives
It is synchronous.D2D is communicated, there may be multiple reception UE by one group of D2D-SRS, therefore can not protect with the multiple reception UE
Hold synchronization.Further, the time that the multiple groups D2D-SRS sent by different UE reaches the same UE also cannot keep synchronization, such as
What multiplexing multiple groups D2D-SRS is also required to solution.
In view of the above-mentioned problems, the invention discloses the D2D-SRS schemes in a kind of D2D system.
Summary of the invention
The invention discloses a kind of methods in user equipment (UE), wherein includes the following steps:
Receive or send the first signaling
Synchronous first resource
Sending device is to equipment interception reference signal (D2D-SRS) on first resource
Wherein, the subframe that the first signaling instruction first resource occupies；The duration of the D2D-SRS is greater than T and is less than
Equal to 2T, the T is equal to the sum of T1 and T2, and the T1 is the duration of a symbol, and the T2 is corresponding cyclic prefix
Duration；The D2D-SRS is made of D2D-SRS basic sequence and D2D-SRS cyclic prefix.
First signaling is semi-static signaling or dynamic signaling, and first resource is true by time-domain and two dimension institutes of frequency domain
Fixed, the synchronous first resource refers to the absolute starting times point in time-domain that first resource is determined according to synchronous reference.
Possible synchronous reference includes: cell timing, a UE timing, multiple UE timings, external definition-such as global positioning system
(GPS-Global Position System).The T1 is 2048Ts；For normal cyclic prefix subframe, the T2 is
It is 160Ts that first symbol of each time slot of 144Ts or 160Ts(, which corresponds to T2, other are 144Ts)；Before Extended Cyclic
Sew subframe, the T2 is 512Ts, and wherein Ts is 1/30720 millisecond (ms-millisecond).First resource, that is, the D2D-
The duration of SRS is continuous.The symbol is single-carrier frequency division multiple access (SC-FDMA) symbol either orthogonal frequency division multiplexing
(OFDM-Orthogonal Frequency Division Multiplexing) symbol.
The subframe that the instruction first resource shown that first signaling can be shown or hidden occupies, as one embodiment, the
One signaling is dynamic dispatching signaling, wherein the transmitting-receiving comprising information bit scheduling D2D data, is predefined in scheduled D2D number
D2D-SRS is sent according to transmitting-receiving subframe (or further including adjacent sub-frame), the parameter of related D2D-SRS is matched by semi-static mode
It sets；As one embodiment, the first signaling is dynamic dispatching signaling, wherein the transmitting-receiving comprising information bit scheduling D2D data, leads to
Cross whether D2D-SRS triggering bit indication sends in scheduled D2D data transmit-receive subframe (or further including adjacent sub-frame)
The parameter of D2D-SRS, related D2D-SRS are configured by semi-static mode；As another embodiment, the first signaling is half quiet
State configuration signal, wherein containing the information bit for D2D-SRS sub-frame configuration.The D2D-SRS cyclic prefix is located at institute
It is the signal intercepted from D2D-SRS basic sequence tail portion before stating D2D-SRS basic sequence.
Specifically, according to an aspect of the present invention, which is characterized in that first resource spans adjacent two in time-domain
A symbol.
Specifically, according to a further aspect of the invention, which is characterized in that the D2D-SRS basic sequence it is lasting when
Between be the T1, and adjacent two symbols are spanned in time-domain.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that the corresponding D2D- of the D2D-SRS basic sequence
The duration of SRS cyclic prefix is following one:
-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, and according to RAN#74 meeting of 3GPP, Ds value is 624Ts, and Ts is
1/30720 millisecond (ms-millisecond), T is 2192Ts, and 16 expression D2D-SRS occupy first symbol of a subframe
Number, 2Ds indicates that respectively there is a protection interval at the both ends of D2D-SRS.
Specifically, above-mentioned two aspect according to the present invention, which is characterized in that the adjacent two symbols be it is following it
One:
A. most latter two symbol of a subframe, either
B. first symbol of the last symbol of previous subframe and the latter subframe
Specifically, above-mentioned aspect according to the present invention, which is characterized in that the synchronous reference of first resource is following one:
It is obtained according to cell timing
- D2D has found the transmission timing of signal (Discovery Signal)
The transmission timing of macrocell Physical Uplink Shared Channel (PUSCH)
The UE that the cell timing is suitable for carrying out D2D-SRS transmission is in the scene in cell coverage area, specific
Realization is to propose previous offset again according to the synchronization signal of the base station equipment received to obtain, and the offset is auxiliary by base station
The method helped obtains, or is obtained according to the estimation of downlink signal intensity, or predefine a fixed value.
The transmission timing that the synchronous reference of first resource is equal to D2D discovery signal (Discovery Signal) is applicable in
It is in cell coverage area or outside cell coverage area in the UE of more extensive scene, such as transmission D2D-SRS；It is described
The transmission timing of D2D discovery signal (Discovery Signal) needs the further definition of 3GPP, possible synchronous reference packet
It includes: cell timing, cluster head timing, relaying UE timing etc..
The transmission timing of macrocell PUSCH is to shift to an earlier date TA again based on base station timing, and the TA is the propagation from base station to UE
Delay.When the adjacent two symbols are above-mentioned A and the adjacent two symbols are located at D2D communication subframe, macrocell PUSCH
Transmission timing may be such that D2D-SRS and D2D data generate interference.As one embodiment, the UE1 in cell edge exists
The D2D-SRS that most latter two symbol of subframe n is sent, the UE2 in center of housing estate are sent out on the third last symbol of subframe n
The D2D data sent, UE3 D2D data of the reception from UE2 and UE3 distance UE1's and UE2 is equidistant (i.e. propagation delay phase
Together), then the D2D data from UE2 and the D2D-SRS from UE1 that UE3 is received have overlapping (the interfering) of Ta, the Ta
It is the transmission lead of UE1.It is above-mentioned B and institute that thus the transmission timing of macrocell PUSCH, which is more suitable for the adjacent two symbols,
State the scene that previous subframe is non-D2D communication subframe.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that the previous subframe is configured as non-D2D
Frame.The non-D2D subframe refers to the subframe that cannot receive and dispatch D2D data.
It is not need to reserve before D2D-SRS that the SRS resource for reusing non-D2D subframe, which sends a benefit of D2D-SRS,
Protection interval, because UE will not monitor the upstream data of macrocell.For macrocell UE, as long as the SRS resource of its distribution
With D2D-SRS resource not on identical running time-frequency resource, therefore keep being compatible with existing system.
Specifically, according to an aspect of the present invention, which is characterized in that the D2D-SRS basic sequence is in time-domain
Repetition factor (RPF-Repetition Factor) be integer greater than 2.The RPF refers to that the repetition in time-domain goes out
Existing number corresponds to the gap size for occupying subcarrier on frequency domain at equal intervals.
The invention discloses a kind of methods in user equipment (UE), wherein includes the following steps:
Receive or send the first signaling
Synchronous Secondary resource
D2D-SRS basic sequence is received on Secondary resource
Wherein, the subframe that the first signaling instruction Secondary resource occupies, the duration of Secondary resource is T1, and in time-domain
On span adjacent two symbols, the T1 is the duration of a symbol.
Specifically, according to an aspect of the present invention, which is characterized in that the adjacent two symbols be a subframe most
Latter two symbol.
Specifically, according to an aspect of the present invention, which is characterized in that the adjacent two symbols are previous subframes
First symbol of last symbol and the latter subframe.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that the previous subframe is configured as non-D2D
Frame.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that the D2D-SRS basic sequence is in time-domain
Repetition factor (RPF) be integer greater than 2.
For receiving the UE of D2D-SRS, the synchronous reference of Secondary resource be realize it is related, as one embodiment,
The synchronous reference of Secondary resource is following one:
It is obtained according to cell timing
- D2D has found the transmission timing of signal (Discovery Signal)
The transmission timing of macrocell Physical Uplink Shared Channel (PUSCH).
The invention discloses a kind of methods in user equipment (UE), wherein includes the following steps:
The subframe that the first signaling instruction D2D-SRS is occupied is sent,
Wherein, the duration of the D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, described
T1 is the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The D2D-SRS is by D2D-SRS base
This sequence and D2D-SRS cyclic prefix composition.
The invention discloses a kind of methods in system equipment, wherein includes the following steps:
The subframe that the first signaling instruction D2D-SRS is occupied is sent,
Wherein, the duration of the D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, described
T1 is the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The D2D-SRS is by D2D-SRS base
This sequence and D2D-SRS cyclic prefix composition.
The invention discloses a kind of user equipment (UE), which is characterized in that the equipment includes:
First module: receiving or sends the first signaling
Second module: synchronous first resource
Third module: sending device is to equipment interception reference signal (D2D-SRS) on first resource
Wherein, the subframe that the first signaling instruction first resource occupies；The duration of the D2D-SRS is greater than T and is less than
Equal to 2T, the T is equal to the sum of T1 and T2, and the T1 is the duration of a symbol, and the T2 is corresponding cyclic prefix
Duration；The D2D-SRS is made of D2D-SRS basic sequence and D2D-SRS cyclic prefix.
As one embodiment, above equipment is characterized in that, first resource spans two neighboring symbol in time-domain
Number.
As one embodiment, above equipment is characterized in that, the duration of the D2D-SRS basic sequence is described
T1, and adjacent two symbols are spanned in time-domain.
The invention discloses a kind of user equipment (UE), which is characterized in that the equipment includes:
First module: receiving or sends the first signaling
Second module: synchronous Secondary resource
Third module: D2D-SRS basic sequence is received on Secondary resource
Wherein, the subframe that the first signaling instruction Secondary resource occupies, the duration of Secondary resource is T1, and in time-domain
On span adjacent two symbols, the T1 is the duration of a symbol.
The invention discloses a kind of user equipment (UE), which is characterized in that the equipment includes:
First module: sending the subframe that the first signaling instruction D2D-SRS is occupied,
Wherein, the duration of the D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, described
T1 is the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The D2D-SRS is by D2D-SRS base
This sequence and D2D-SRS cyclic prefix composition.
The invention discloses a kind of system equipments, which is characterized in that the equipment includes:
First module: sending the subframe that the first signaling instruction D2D-SRS is occupied,
Wherein, the duration of the D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, described
T1 is the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The D2D-SRS is by D2D-SRS base
This sequence and D2D-SRS cyclic prefix composition.
The present invention solves the interference problem of D2D-SRS in D2D system, for this problem, is followed by what design lengthened
Ring prefix avoids the interference of propagation delay bring, and the present invention utmostly maintains the compatibility with existing system.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows most latter two symbol of one subframe of D2D-SRS occupancy according to an embodiment of the invention
Schematic diagram；
Fig. 2 shows the last symbols that D2D-SRS according to an embodiment of the invention occupies previous subframe
With the schematic diagram of first symbol of the latter subframe；
Fig. 3 shows the signal for the RPF that D2D-SRS basic sequence adopted value according to an embodiment of the invention is 4
Figure；
Fig. 4 shows the UE according to an embodiment of the invention in cell coverage area and sends D2D-SRS's
The schematic diagram of synchronous reference；
Fig. 5 shows the UE according to an embodiment of the invention outside cell coverage area and sends D2D-SRS's
The schematic diagram of synchronous reference；
Fig. 6 shows D2D-SRS scheduling flow figure according to an embodiment of the invention；
Fig. 7 shows the D2D-SRS in user equipment according to an embodiment of the invention and sends processing unit structure
Block diagram；
Fig. 8 shows the D2D-SRS receiving and processing device structure in user equipment according to an embodiment of the invention
Block diagram；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates most latter two symbol that D2D-SRS occupies a subframe, as shown in Fig. 1.
In embodiment 1, it is subframe n that UE receives the subframe that the first signaling determines that first resource occupies first；Then according to same
Step determines in most latter two symbol of the subframe n with reference to synchronous first resource and is used for transmission the resource of D2D-SRS in the time
Absolute starting point on domain；Then D2D-SRS is sent on first resource.
Wherein, the D2D-SRS is made of D2D-SRS basic sequence and D2D-SRS cyclic prefix, the D2D-SRS base
The duration of this sequence is 2048Ts, and Ts is 1/30720 millisecond.According to the duration of the D2D-SRS cyclic prefix
Difference further illustrates 4 kind possible structures of the D2D-SRS in time-domain in embodiment 1.
In attached drawing 1- (I), D2D-SRS occupies a part and the latter symbol behind previous symbol in time-domain
Before a part.
In attached drawing 1- (II), before D2D-SRS occupies whole and the latter symbol of previous symbol in time-domain
Face a part.
In attached drawing 1- (III), D2D-SRS occupied in time-domain previous symbol whole and the latter symbol it is complete
Portion.
In attached drawing 1- (IV), D2D-SRS occupies a part and the latter symbol behind previous symbol in time-domain
Number whole.
In attached drawing 1- (I)~(IV), backslash indicates D2D-SRS cyclic prefix, and grey indicates 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 the protection interval is 624Ts, the D2D-SRS cyclic prefix in attached drawing 1- (I)~(IV) it is lasting when
Between be respectively as follows: 1088Ts, 1712Ts, 2336Ts, 2172Ts.
Embodiment 2
Embodiment 2 illustrate D2D-SRS occupy previous subframe last symbol and first of the latter subframe
Symbol, as shown in Fig. 2.
In embodiment 2, it is subframe n and subframe n-1 that UE sends the subframe that the first signaling instruction first resource occupies first；So
Afterwards according to the synchronous first resource of synchronous reference, that is, before the last symbol and latter subframe that determine occupied previous subframe
Absolute starting point of the resource of D2D-SRS in time-domain is used for transmission in one symbol；Then D2D- is sent on first resource
SRS。
Wherein, the D2D-SRS is made of D2D-SRS basic sequence and D2D-SRS cyclic prefix, the D2D-SRS base
The duration of this sequence is 2048Ts, and Ts is 1/30720 millisecond.According to the duration of the D2D-SRS cyclic prefix
Difference further illustrates 4 kind possible structures of the D2D-SRS in time-domain in embodiment 2.
In attached drawing 2- (I), D2D-SRS occupies a part and the latter symbol behind previous symbol in time-domain
Before a part.
In attached drawing 2- (II), before D2D-SRS occupies whole and the latter symbol of previous symbol in time-domain
Face a part.
In attached drawing 2- (III), D2D-SRS occupied in time-domain previous symbol whole and the latter symbol it is complete
Portion.
In attached drawing 2- (IV), D2D-SRS occupies a part and the latter symbol behind previous symbol in time-domain
Number whole.
In attached drawing 2- (I)~(IV), backslash indicates D2D-SRS cyclic prefix, and grey indicates 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 the protection interval is 624Ts, the D2D-SRS cyclic prefix in attached drawing 2- (I)~(IV) is held
The continuous time is respectively as follows: 1104Ts, 1728Ts, 2352Ts, 2188Ts.
Embodiment 3
Embodiment 3 illustrates the schematic diagram for the RPF that D2D-SRS basic sequence adopted value is 4, as shown in Fig. 3.Attached drawing 3
In, backslash indicates D2D-SRS cyclic prefix, and grey indicates D2D-SRS basic sequence, and blank parts do not send signal-conduct
Protection interval.
In embodiment 3, UE receives the first signaling first and determines the subframe that Secondary resource occupies；Then same according to synchronous reference
Secondary resource is walked, that is, determines and transmits the resource of D2D-SRS basic sequence in most latter two symbol of occupied subframe in the time
Absolute starting point on domain；Then D2D-SRS basic sequence is received on Secondary resource.
3 sub- carrier occupancies, one subcarrier, i.e. RPF are 4 to the D2D-SRS basic sequence at equal intervals in a frequency domain.Increase
Big RPF means that a symbol can be multiplexed more D2D-SRS basic sequences.And the SRS of traditional code division multiplexing is in D2D
The problem of can be potentially encountered near-far interference in communication.
Embodiment 4
Embodiment 4 illustrates the schematic diagram that the UE in cell coverage area sends the synchronous reference of D2D-SRS, such as attached
Shown in Fig. 4.
In embodiment 4, the UE in cell coverage area sends the son that the first signaling instruction Secondary resource occupies first
Frame；Then according to the synchronous Secondary resource of synchronous reference；Then D2D-SRS basic sequence is received on Secondary resource.
The synchronous reference is obtained according to cell timing, i.e., according to the cell downlink signal timing that receives mention it is previous
Offset.The offset is by signal deployment or predetermined configuration.If the offset is TA i.e. fixed using cell
When, then the sending time of D2D-SRS and the sending time of base station are coincide, and all UE have identical on Secondary resource in cell
D2D-SRS sending time.If the offset is 2TA, the synchronous reference is red cell PUSCH timing.
Embodiment 5
Embodiment 5 illustrates the schematic diagram that the UE outside cell coverage area sends the synchronous reference of D2D-SRS, such as attached
Shown in Fig. 5.
In embodiment 5, the UE outside cell coverage area receives the son that the first signaling instruction first resource occupies first
Frame；Then according to the synchronous first resource of synchronous reference；Then D2D-SRS is sent on first resource.
The synchronous reference is obtained according to the timing of cluster head UE, i.e., according to the synchronization signal of the cluster head UE that receives (such as
D2D has found signal) periodically mentioning previous offset Tc.The offset Tc is by signal deployment or predetermined configuration.
Embodiment 6
Embodiment 6 illustrates D2D-SRS scheduling flow figure, as shown in Fig. 6.In attached drawing 6, equipment 17 sends signaling scheduling
The transmitting-receiving of D2D-SRS, UE U18 send D2D-SRS, and UE U19 receives D2D-SRS, and equipment 17 is UE or system equipment.
For equipment 17, in step S171, the subframe that the first signaling instruction D2D-SRS is occupied is sent, wherein described
The duration of D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, and the T1 is continuing for a symbol
Time, the T2 are the duration of corresponding cyclic prefix；The D2D-SRS is recycled by D2D-SRS basic sequence and D2D-SRS
Prefix composition.
For U18, in step S181, the first signaling is received, in step S182, synchronous first resource, in step
In S183, sending device is to equipment interception reference signal (D2D-SRS) on first resource, wherein the first signaling instruction first
The subframe of resource occupation；The duration of the D2D-SRS is greater than T and is less than or equal to 2T, and the T is equal to the sum of T1 and T2, institute
The duration that T1 is a symbol is stated, the T2 is the duration of corresponding cyclic prefix；The D2D-SRS is by D2D-SRS
Basic sequence and D2D-SRS cyclic prefix composition.
For U19, in step S191, the first signaling is received, in step S192, synchronous Secondary resource, in step
In S193, D2D-SRS basic sequence is received on Secondary resource, wherein the first signaling indicates the subframe that Secondary resource occupies, the
The duration of two resources is T1, and adjacent two symbols are spanned in time-domain, the T1 be a symbol it is lasting when
Between.
Embodiment 7
Embodiment 7 illustrates the D2D-SRS in user equipment and sends processing unit structural block diagram, as shown in Fig. 7.Attached drawing
In 7, the processing unit 400 in UE is by the first signalling module 401, the second synchronization module 402, the composition of third sending module 403.
In processing unit 400, the first signalling module 401 receives the first signaling, synchronous first money of the second synchronization module 402
Source, third sending module 403 on first resource sending device to equipment interception reference signal (D2D-SRS).Wherein, the first letter
The subframe for enabling instruction first resource occupy；The duration of the D2D-SRS be greater than T and be less than or equal to 2T, the T be equal to T1 and
The sum of T2, the T1 are the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The D2D-SRS
It is made of D2D-SRS basic sequence and D2D-SRS cyclic prefix.
Above-mentioned first resource spans adjacent two symbols in time-domain, further, the D2D-SRS basic sequence
Duration be the T1, and adjacent two symbols are spanned in time-domain.
Embodiment 8
Embodiment 8 illustrates the D2D-SRS receiving and processing device structural block diagram in user equipment, as shown in Fig. 8.Attached drawing
In 8, the processing unit 500 in UE is by the first signalling module 501, the second synchronization module 502, the composition of third receiving module 503.
In processing unit 500, the first signalling module 501 sends the first signaling, synchronous second money of the second synchronization module 502
Source, third receiving module 503 receive D2D-SRS basic sequence on Secondary resource.Wherein, the first signaling instruction Secondary resource accounts for
Subframe；The duration of the D2D-SRS basic sequence is the T1, and two neighboring symbol is spanned in time-domain
Number, the T1 is the duration of a symbol.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (20)
1. a kind of method in user equipment, wherein include the following steps:
Receive or send the first signaling；
Synchronous first resource；
Sending device is to equipment interception reference signal on first resource；
Wherein, the subframe that the first signaling instruction first resource occupies；Duration of the equipment to equipment interception reference signal
Greater than T and it is less than or equal to 2T, the T is equal to the sum of T1 and T2, and the T1 is the duration of a symbol, and the T2 is corresponding
The duration of cyclic prefix；The equipment is made of equipment interception reference signal basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
2. the method according to claim 1, wherein first resource spans two neighboring symbol in time-domain
Number.
3. the method according to claim 1, wherein the equipment is to equipment interception reference signal basic sequence
Duration is the T1, and adjacent two symbols are spanned in time-domain.
4. according to the method in claim 2 or 3, which is characterized in that the adjacent two symbols are the last of a subframe
Two symbols.
5. according to the method in claim 2 or 3, which is characterized in that the adjacent two symbols be previous subframe most
First symbol of the latter symbol and the latter subframe.
6. the method according to claim 1, wherein the synchronous reference of first resource is following one:
It is obtained according to cell timing；
The transmission timing of-D2D discovery signal；
The transmission timing of macrocell Physical Uplink Shared Channel.
7. according to the method described in claim 5, it is characterized in that, the previous subframe is configured as non-D2D subframe.
8. a kind of method in user equipment, wherein include the following steps:
Receive or send the first signaling；
Synchronous Secondary resource；
Basic sequence of the receiving device to equipment interception reference signal on Secondary resource；
Wherein, the first signaling instruction Secondary resource occupy subframe, the duration of Secondary resource is T1, and in time-domain across
Adjacent two symbols are got over, the T1 is the duration of a symbol；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
9. according to the method described in claim 8, it is characterized in that, the adjacent two symbols be a subframe most latter two
Symbol.
10. according to the method described in claim 8, it is characterized in that, the adjacent two symbols are the last of previous subframe
First symbol of one symbol and the latter subframe.
11. according to the method described in claim 10, it is characterized in that, the previous subframe is configured as non-D2D subframe.
12. according to the method described in claim 8, it is characterized in that, the equipment is to equipment interception reference signal basic sequence
Repetition factor in time-domain is the integer greater than 2.
13. a kind of method in user equipment, wherein include the following steps:
The subframe that the first signaling indicating equipment occupies equipment interception reference signal is sent,
Wherein, the equipment is greater than T to duration of equipment interception reference signal and is less than or equal to 2T, the T be equal to T1 and
The sum of T2, the T1 are the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The equipment is to setting
Standby interception reference signal is made of basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
14. a kind of method in system equipment, wherein include the following steps:
The subframe that the first signaling indicating equipment occupies equipment interception reference signal is sent,
Wherein, the equipment is greater than T to duration of equipment interception reference signal and is less than or equal to 2T, the T be equal to T1 and
The sum of T2, the T1 are the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The equipment is to setting
Standby interception reference signal is made of basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
15. a kind of user equipment, which is characterized in that the equipment includes:
First module: receiving or sends the first signaling；
Second module: synchronous first resource；
Third module: sending device is to equipment interception reference signal on first resource；
Wherein, the subframe that the first signaling instruction first resource occupies；Duration of the equipment to equipment interception reference signal
Greater than T and it is less than or equal to 2T, the T is equal to the sum of T1 and T2, and the T1 is the duration of a symbol, and the T2 is corresponding
The duration of cyclic prefix；The equipment is made of equipment interception reference signal basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
16. equipment according to claim 15, which is characterized in that first resource spans two neighboring symbol in time-domain
Number.
17. equipment according to claim 15, which is characterized in that the duration of the basic sequence is the T1, and
Adjacent two symbols are spanned in time-domain.
18. a kind of user equipment, which is characterized in that the equipment includes:
First module: receiving or sends the first signaling；
Second module: synchronous Secondary resource；
Third module: basic sequence of the receiving device to equipment interception reference signal on Secondary resource；
Wherein, the first signaling instruction Secondary resource occupy subframe, the duration of Secondary resource is T1, and in time-domain across
Adjacent two symbols are got over, the T1 is the duration of a symbol；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
19. a kind of user equipment, which is characterized in that the equipment includes:
First module: sending the subframe that the first signaling instruction D2D-SRS is occupied,
Wherein, the equipment is greater than T to the duration of equipment interception reference signal and is less than or equal to 2T, and the T is equal to T1
With the sum of T2, the T1 is the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The equipment pair
Equipment interception reference signal is made of basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
20. a kind of system equipment, which is characterized in that the equipment includes:
Wherein, the equipment is greater than T to duration of equipment interception reference signal and is less than or equal to 2T, the T be equal to T1 and
The sum of T2, the T1 are the duration of a symbol, and the T2 is the duration of corresponding cyclic prefix；The equipment is to setting
Standby interception reference signal is made of basic sequence and cyclic prefix；
The duration of the corresponding cyclic prefix of the basic sequence is following one:
-1088Ts；
-1712Ts；
-1728Ts；
Wherein Ts is 1/30720 millisecond.
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| CN105101387B (en) * | 2014-05-06 | 2019-04-02 | 电信科学技术研究院 | A kind of synchronization processing method and user equipment |
| US10674425B2 (en) * | 2015-03-31 | 2020-06-02 | Qualcomm Incorporated | Systems, methods, and apparatus for managing a relay connection in a wireless communications network |
| CN106454995B (en) * | 2015-08-10 | 2021-06-04 | 上海诺基亚贝尔股份有限公司 | Method for configuring relay discovery message transmission resources, corresponding relay terminal device and remote terminal device |
| 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 |
| EP3689056B1 (en) * | 2017-09-28 | 2024-11-06 | Lenovo (Beijing) Limited | Method and apparatus for sounding reference signal transmission on sidelink |
| CN112291746B (en) | 2018-06-29 | 2022-03-08 | Oppo广东移动通信有限公司 | Data transmission method and terminal equipment |
| 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 |
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| CN103108405A (en) * | 2011-11-15 | 2013-05-15 | 中兴通讯股份有限公司 | Method and system of wireless communication |
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| US9160511B2 (en) * | 2012-01-30 | 2015-10-13 | Qualcomm Incorporated | Cyclic prefix in evolved multimedia broadcast multicast service with high transmit power |
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Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Terminal Co.,Ltd. Country or region after: China Address before: 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong Patentee before: Honor Device Co.,Ltd. Country or region before: China |