CN104734802B - Dispatching method and device in a kind of D2D communication - Google Patents
Dispatching method and device in a kind of D2D communication Download PDFInfo
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- CN104734802B CN104734802B CN201310699979.1A CN201310699979A CN104734802B CN 104734802 B CN104734802 B CN 104734802B CN 201310699979 A CN201310699979 A CN 201310699979A CN 104734802 B CN104734802 B CN 104734802B
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Abstract
The invention discloses the dispatching methods and device in a kind of D2D communication.For how whether to determine multiple received D2D signal from same D2D transmission this problem of UE, the invention discloses a solution.As one embodiment, D2D sends UE and sends signaling indicates whether the UE identifier in its UE identifier and previous time window in actual time window is equal.The present invention enables to D2D to receive UE and is directed to repeatedly received D2D reference signal progress joint channel estimation and the hybrid automatic repeat-request HARQ merging for multiple received (re-transmission) D2D data.In addition, the present invention helps to reduce shaking hands the time for D2D communication.
Description
Technical field
The present invention relates to devices to the scheme dispatched in device (D2D-Device to Device) communication, more particularly to
Scheduling scheme based on long term evolution (LTE-Long Term Evolution) D2D.
Background technique
Traditional third generation cooperative partner program (3GPP-3rd Generation Partner Project) long term evolution
In (LTE-Long Term Evolution) system, data transmission occurs in base station and user equipment (UE-User
Equipment between).In 3GPP R12, device is set up the project and is subject to device (D2D-Device to Device) communication
It discusses, the essential characteristic of D2D is that the data between UE is allowed to transmit.For FDD and TDD system, 3GPP is in wireless access
The conclusion that the 73rd meeting (RAN1#73) of the first working group of net is reached is: the UE in D2D system does not allow to receive and dispatch simultaneously.Into one
Step, in order to avoid the interference that downlink data communicates D2D, UE occupies the traditional ascending resource i.e. upstream band of FDD and son
The sub-frame of uplink of frame (TDD) is for D2D communication (TDD downlink subframe needs to be further discussed).In RAN1#74bis meeting, lead to
The multi-access mode that SC-FDMA is used about the subframe of D2D communication is crossed, further, the physical channel for D2D communication to the greatest extent may be used
The structure of LTE PUSCH, including channel coding, demodulated reference signal, cyclic redundancy check code, scrambling code etc. can be reused.
3GPP discusses the design of D2D discovery signal (DS-Discovery Signal), according to RAN#74bis meeting knot
By D2D has found that signal includes a sequence (Sequence) and a block of information (Message).Although D2D has found signaling bearer
Information need further to define, however the viewpoint of a mainstream be D2D discovery signal at least carry D2D identifier, it is described
D2D identifier is used to identify the sender of the D2D discovery signal:
The generation of the scrambler sequence of D2D data for sender transmission
Generation for the D2D reference signal that the sender sends
D2D send UE obtain D2D identifier mode include:
Mode 1: the signaling for receiving control node (base station either UE) obtains D2D identifier
Mode 2: D2D identifier is voluntarily obtained
No matter D2D sends D2D identifier used by UE and is likely to vary over using which kind of mode,
Possible scene includes:
It is regained after scene 1:D2D transmission UE stopping transmission D2D discovery signal (discharging old D2D identifier) new
D2D identifier.Further, during the D2D sends UE stopping transmission D2D discovery signal, the old D2D identifier can
UE can be sent by other D2D to use.
Scene 2: movement or random determining D2D identifier due to D2D transmission UE may be generated using identical D2D
The D2D of identifier sends UE scene interfering with each other.In order to avoid interference, D2D send UE may need to timely update D2D mark
Symbol.
UE is received for D2D, determines repeatedly whether received D2D signal sends UE from the same D2D and may bring
Following advantage:
Joint channel estimation is carried out for repeatedly received D2D reference signal
For the hybrid automatic repeat-request (HARQ-Hybrid of multiple received (re-transmission) D2D data
Automatic Repeat Request) merge
Shaking hands the time for D2D communication, such as the interaction of D2D UE ability are reduced, synchronous, power control etc.
Therefore, how to determine whether multiple received D2D signal sends UE from the same D2D is a needs
It solves the problems, such as, for this problem, the invention discloses the scheduling schemes in a kind of D2D communication.
Summary of the invention
The invention discloses a kind of methods in UE, wherein includes the following steps:
A. the first signaling is sent in current time window indicates the first D2D identifier
B. the second signaling instruction following one is sent in current time window:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；Such as
The 2nd D2D identifier of fruit is not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not
In the presence of the first information is configured as state 2.
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D is marked
Know symbol to be not present, the second information is the fixed integer except the value range of D2D identifier.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
The D2D identifier is configured by control node or is voluntarily determined by the UE.2nd D2D identifier is the UE
The UE mark for D2D communication in previous time window is sent D2D discovery signal in previous time window by the UE and referred to
Show.As one embodiment, the D2D identifier is the index of the characteristic sequence in the D2D discovery signal.As again
One embodiment, the D2D identifier are carried by the block of information in D2D discovery signal.2nd D2D identifier is deposited
The D2D discovery signal is had sent in previous time window in, i.e., the described UE；2nd D2D discovery signal is not present, i.e., the described UE
Signal is found without sending the D2D in previous time window.As one embodiment, the characteristic sequence is a ZC
(Zadoff Chu) sequence, as another embodiment, the characteristic sequence is a pseudo-random sequence, as another implementation
Example, the characteristic sequence include a ZC sequence and a pseudo-random sequence.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
C. the first D2D signal is sent in current time window, the first D2D signal is identified by the first D2D identifier.
As one embodiment, the first D2D signal includes D2D data and D2D demodulated reference signal, the first D2D identifier
The initialization of scrambler sequence for the D2D data, and the first D2D identifier is used for the life of the D2D demodulated reference signal
At.As another embodiment, the first D2D signal includes D2D reference signal, and the first D2D identifier is for the D2D with reference to letter
Number generation.
Specifically, according to an aspect of the present invention, which is characterized in that the second signaling finds signaling bearer by the D2D.
The D2D discovery signal is in addition to including the first information or the second information, moreover it is possible to including other information, as one
Embodiment, the block of information include one in { D2D type of service, the D2D identifier, System Frame Number, serving cell mark }
Kind is a variety of.
Specifically, according to an aspect of the present invention, which is characterized in that the N is in the sending cycle of the second signaling
K times of sub-frame number, the K are positive integers.
As one embodiment, the K is 1.
The invention discloses a kind of methods in UE, wherein includes the following steps:
A. the first signaling is received in current time window obtains the first D2D identifier
B. the second signaling is received in current time window obtains following one:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first letter
Breath is state 2, and the 2nd D2D identifier is not that the first D2D identifier or the 2nd D2D identifier are not present.
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is second
D2D identifier；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not
In the presence of.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
As one embodiment, the value range of the D2D identifier is 0 to 503 integer.As another implementation
Example, the value range of the D2D identifier is 0 to 65535 integer.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
C. the first D2D signal is received in current time window, the first D2D signal is identified by the first D2D identifier
Wherein, if the UE is received, the second signaling obtains the first information and the first information is that state 1 or the UE connect
Receiving the second signaling and obtaining the second information and the second information is the fixed integer within the value range of the D2D identifier, first
The auxiliary information based on passing D2D signal is utilized in the reception of D2D signal；Otherwise, the reception of the first D2D signal does not utilize base
In the auxiliary information of passing D2D signal.Passing D2D signal is received before current time window by the first D2D signal
D2D signal of the sender in UE identifier mark at that time.
As one embodiment, passing D2D signal is received in previous time window by second identifier symbol mark
D2D signal.
As one embodiment, above-mentioned auxiliary information includes Doppler shift (Doppler Shift), doppler spread
(Doppler Spread), average delay (Average Delay), time delay expansion (Delay Spread) etc..
The passing D2D signal is identified by the sender of the first D2D signal in D2D identifier at that time.
Specifically, according to an aspect of the present invention, which is characterized in that the second signaling finds signaling bearer by the first D2D.
Specifically, according to an aspect of the present invention, which is characterized in that the N is in the sending cycle of the second signaling
K times of sub-frame number, the K are positive integers.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: the first D2D identifier is indicated for sending the first signaling in current time window
Second module: for sending the second signaling instruction following one in current time window:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；Such as
The 2nd D2D identifier of fruit is not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not
In the presence of the first information is configured as state 2.
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D is marked
Know symbol to be not present, the second information is the fixed integer except the value range of D2D identifier.
Third module: for sending the first D2D signal in current time window, the first D2D signal is by the first D2D identifier
Mark.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
The invention discloses a kind of user equipmenies, which is characterized in that the equipment includes:
First module: the first D2D identifier is obtained for receiving the first signaling in current time window
Second module: following one is obtained for receiving the second signaling in current time window:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first letter
Breath is state 2, and the 2nd D2D identifier is not that the first D2D identifier or the 2nd D2D identifier are not present.
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is second
D2D identifier；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not
In the presence of.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
As one embodiment, above equipment further include:
Third module: for receiving the first D2D signal in current time window, the first D2D signal is by the first D2D identifier
Mark
Wherein, if the UE is received, the second signaling obtains the first information and the first information is that state 1 or the UE connect
Receiving the second signaling and obtaining the second information and the second information is the fixed integer within the value range of the D2D identifier, first
The auxiliary information based on passing D2D signal is utilized in the reception of D2D signal；Otherwise, the reception of the first D2D signal does not utilize base
In the auxiliary information of passing D2D signal.Passing D2D signal is received before current time window by the first D2D signal
D2D signal of the sender in UE identifier mark at that time.
For how determining whether multiple received D2D signal from the same D2D sends this problem of UE, this
Disclosure of the invention a solution.The present invention can bring following advantage:
Joint channel estimation is carried out for repeatedly received D2D reference signal
Merge for the hybrid automatic repeat-request HARQ of multiple received (re-transmission) D2D data
Shaking hands the time for D2D communication, such as UE capability report are reduced, synchronous, power control etc..
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 the flow chart of the configuration signal of D2D identifier according to an embodiment of the invention；
Fig. 2 shows the flow charts of D2D signal transmitting and receiving according to an embodiment of the invention；
Fig. 3 shows the timing diagram of D2D communication according to an embodiment of the invention；
Fig. 4 shows the timing diagram of the communication of D2D according to still another embodiment of the invention；
Fig. 5 shows the processing unit structural block diagram in D2D transmission user equipment according to an embodiment of the invention；
Fig. 6 shows the processing unit structural block diagram in D2D reception user equipment according to an embodiment of the invention；
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 the flow chart of the configuration signal of D2D identifier, as shown in Fig. 1.In attached drawing 1, UE U10 and
UE U11 is two UE of D2D communication.
For UE U10
In step s101, the first signaling is sent in current time window indicates the first D2D identifier；In step S102
In, the second signaling instruction following one is sent in current time window:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；Such as
The 2nd D2D identifier of fruit is not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not
In the presence of the first information is configured as state 2.
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D is marked
Know symbol to be not present, the second information is the fixed integer except the value range of D2D identifier.
For UE U11
In step S111, the first signaling is received in current time window and obtains the first D2D identifier；In step S112
In, the second signaling is received in current time window obtains following one:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first letter
Breath is state 2, and the 2nd D2D identifier is not that the first D2D identifier or the 2nd D2D identifier are not present.
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is second
D2D identifier；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not
In the presence of.
In embodiment 1, the time window is that length is N milliseconds of period in time-domain, and the N is positive integer, second
D2D identifier is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer by D2D, described
D2D has found that signal includes a characteristic sequence and a block of information.
Embodiment 2
Embodiment 2 illustrates the flow chart of D2D signal transmitting and receiving, as shown in Fig. 2.In embodiment 2, UE U12 and UE U13
It is two UE of D2D communication.
For UE U12
In step S121, the first D2D signal is sent in current time window.
For UE U13
In step S131, the first D2D signal is received in current time window, the first D2D signal is by the first D2D identifier
Mark.Wherein, if the UE is received, the second signaling obtains the first information and the first information is state 1, and the first D2D signal connects
The auxiliary information based on passing D2D signal is utilized in receipts；If the UE receives the second signaling and obtains the first information and the first letter
Breath is state 2, and the reception of the first D2D signal is without utilizing the auxiliary information based on passing D2D signal.Passing D2D signal is to work as
The D2D signal sent by UE U12 received before preceding time window.The state of UE U13 according to the first information determines passing D2D
Signal, as a sub- embodiment of embodiment 2, the passing D2D signal is reception of the UE U13 in continuous S time window
Arrive the first D2D identifier mark D2D signal, the continuous S time window be current time window before and and current time
Window is continuous and UE U13 is able to detect that the first information and the first information is S continuous time windows of state 1, and the S is
Positive integer.
In embodiment 2, the first D2D signal includes D2D reference signal, and the first D2D identifier is used for the D2D reference signal
Sequence generate.
Embodiment 3
Embodiment 3 illustrates the timing diagram of D2D communication, as shown in Fig. 3.In attached drawing 3, a lattice indicates a son
Frame, the pane (A, B, C) of oblique line mark indicate that D2D discovery signal transmits subframe, and the lattice (1,2,3) of backslash mark is
D2D signal transmits subframe.The D2D discovery signal period property is sent, and sending cycle is equal to 1 time window.
UE is sent for D2D, subframe B first in current time window sends the first signaling and indicates the first D2D identifier,
Then the subframe B in current time window sends the second signaling and indicates the second information, and then the subframe 3 in current time window is sent out
Send the first D2D signal.
Wherein, the 2nd D2D identifier that the second information carries is counterpart of the first D2D identifier in previous time window,
The D2D in i.e. previous time window sends the UE mark for D2D communication of UE, and the UE mark is instructed in subframe A.
UE is received for D2D, subframe B first in current time window receives the first signaling and obtains the first D2D identifier,
Then the subframe B in current time window receives the second signaling and obtains the 2nd D2D identifier that the second information carries, and is then working as
Subframe 3 in preceding time window receives the first D2D signal.The auxiliary based on passing D2D signal is utilized in the reception of first D2D signal
Information, passing D2D signal include at least the D2D and receive UE in subframe 1, and what subframe 2 received is identified by the 2nd D2D identifier
D2D signal.
In embodiment 3, the first signaling finds signaling bearer by D2D, and the second signaling is also to find signaling bearer by D2D.Institute
Stating D2D discovery signal includes a characteristic sequence and a block of information.
Embodiment 4
Embodiment 4 is the timing diagram of another D2D communication, as shown in Fig. 4.In attached drawing 4, a lattice indicates one
Subframe, oblique line mark pane (A, B, C, D) indicate D2D discovery signal transmit subframe, backslash mark lattice (1,2,
It 3,4) is D2D signal transmission subframe, the lattice (A, C) of frame overstriking indicates that indication signaling transmits subframe, the indication signaling
It is the second signaling hereinafter and its counterpart in non-present time window.The D2D discovery signal period property is sent, 1
The D2D discovery signal the number of transmissions is greater than 1 time in a time window.
UE is sent for D2D, subframe (C, D) first in current time window sends the first signaling and indicates the first D2D mark
Know symbol, then the subframe C in current time window sends the second signaling and indicates the second information, then the son in current time window
Frame 4 sends the first D2D signal.
Wherein, the 2nd D2D identifier that the second information carries is counterpart of the first D2D identifier in previous time window,
The D2D in i.e. previous time window sends the UE mark for D2D communication of UE, and the UE mark is referred in subframe A, B
Show.
UE is received for D2D, subframe C, D first in current time window receive the first signaling acquisition the first D2D mark
Symbol, then the subframe C in current time window receives the second signaling and obtains the 2nd D2D identifier that the second information carries, then
Subframe 4 in current time window receives the first D2D signal.The reception of first D2D signal is utilized based on passing D2D signal
Auxiliary information, passing D2D signal include at least the D2D receive UE subframe 1,2,3 receive by the 2nd D2D identifier mark
The D2D signal of knowledge.
In embodiment 4, D2D has found that signal includes a characteristic sequence and a block of information.First signaling is found to believe by D2D
Number characteristic sequence carrying, the second signaling carries by the block of information of D2D discovery signal, and the sending cycle of the second signaling is greater than first
The sending cycle of signaling.
Embodiment 5
Embodiment 5 is the processing unit structural block diagram in D2D transmission user equipment, as shown in Fig. 5.In attached drawing 5, at UE
Reason device 400 is by the first sending module 401, the second sending module 402, and third sending module 403 forms.
First sending module 401 indicates the first D2D identifier for sending the first signaling in current time window
Second sending module 402 in current time window for sending the second signaling instruction following one:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；Such as
The 2nd D2D identifier of fruit is not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not
In the presence of the first information is configured as state 2.
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D is marked
Know symbol to be not present, the second information is the fixed integer except the value range of D2D identifier.
Third sending module 403 is used to send the first D2D signal in current time window, and the first D2D signal is by the first D2D
Identifier mark.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
Embodiment 6
Embodiment 6 is the processing unit structural block diagram in D2D reception user equipment, as shown in Fig. 6.In attached drawing 6, at UE
Reason device 500 is by the first receiving module 501, the second receiving module 502, and third receiving module 503 forms.
First receiving module 501 obtains the first D2D identifier for receiving the first signaling in current time window
Second receiving module 502 obtains following one for receiving the second signaling in current time window:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first letter
Breath is state 2, and the 2nd D2D identifier is not that the first D2D identifier or the 2nd D2D identifier are not present.
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is second
D2D identifier；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not
In the presence of.
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D mark
Knowing symbol is counterpart of the first D2D identifier in previous time window, and the first signaling finds signaling bearer, the D2D discovery by D2D
Signal includes a characteristic sequence and a block of information.
Third receiving module 503 is used to receive the first D2D signal in current time window, and the first D2D signal is by the first D2D
Identifier mark
Wherein, if the UE is received, the second signaling obtains the first information and the first information is that state 1 or the UE connect
Receiving the second signaling and obtaining the second information and the second information is the fixed integer within the value range of the D2D identifier, first
The auxiliary information based on passing D2D signal is utilized in the reception of D2D signal；Otherwise, the reception of the first D2D signal does not utilize base
In the auxiliary information of passing D2D signal.Passing D2D signal is received before current time window by the first D2D signal
D2D signal of the sender in UE identifier mark at that time.
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 (11)
1. a kind of method in UE, wherein include the following steps:
A. the first signaling is sent in current time window indicates the first D2D identifier；
B. the second signaling instruction following one is sent in current time window:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；If the
Two D2D identifiers are not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not present,
The first information is configured as state 2；
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D identifier
It is not present, the second information is the fixed integer except the value range of D2D identifier；
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D identifier
It is counterpart of the first D2D identifier in previous time window, the first signaling finds that signaling bearer, the D2D find signal by D2D
Including a characteristic sequence and a block of information.
2. the method according to claim 1, wherein further including following steps:
C. the first D2D signal is sent in current time window, the first D2D signal is identified by the first D2D identifier.
3. the method according to claim 1, wherein the second signaling finds signaling bearer by the D2D.
4. the method according to claim 1, wherein the N is the number of sub frames in the sending cycle of the second signaling
K times of amount, the K are positive integers.
5. a kind of method in UE, wherein include the following steps:
A. the first signaling is received in current time window obtains the first D2D identifier；
B. the second signaling is received in current time window obtains following one:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first information is
State 2, the 2nd D2D identifier are not that the first D2D identifier or the 2nd D2D identifier are not present；
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is the 2nd D2D mark
Know symbol；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not present；
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D identifier
It is counterpart of the first D2D identifier in previous time window, the first signaling finds that signaling bearer, the D2D find signal by D2D
Including a characteristic sequence and a block of information.
6. according to the method described in claim 5, it is characterized in that, further including following steps:
C. the first D2D signal is received in current time window, the first D2D signal is identified by the first D2D identifier；
Wherein, if the UE receives the second signaling and obtains that the first information and the first information are state 1 or the UE receives the
Two signalings obtain the second information and the second information is the fixed integer within the value range of the D2D identifier, the first D2D letter
Number reception the auxiliary information based on passing D2D signal is utilized；Otherwise, the reception of the first D2D signal was not using being based on
Toward the auxiliary information of D2D signal；Passing D2D signal is the transmission by the first D2D signal received before current time window
D2D signal of the person in UE identifier mark at that time.
7. according to the method described in claim 5, it is characterized in that, the second signaling finds signaling bearer by the D2D.
8. according to the method described in claim 5, it is characterized in that, the N is the number of sub frames in the sending cycle of the second signaling
K times of amount, the K are positive integers.
9. a kind of user equipment, which is characterized in that the equipment includes:
First module: the first D2D identifier is indicated for sending the first signaling in current time window；
Second module: for sending the second signaling instruction following one in current time window:
The first information: if the 2nd D2D identifier is equal to the first D2D identifier, the first information is configured as state 1；If the
Two D2D identifiers are not equal to the first D2D identifier, and the first information is configured as state 2；If the 2nd D2D identifier is not present,
The first information is configured as state 2；
- the second information: if the 2nd D2D identifier exists, the second information is the 2nd D2D identifier；If the 2nd D2D identifier
It is not present, the second information is the fixed integer except the value range of D2D identifier；
Third module: for sending the first D2D signal in current time window, the first D2D signal is by the first D2D identifier mark
Know；
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D identifier
It is counterpart of the first D2D identifier in previous time window, the first signaling finds that signaling bearer, the D2D find signal by D2D
Including a characteristic sequence and a block of information.
10. a kind of user equipment, which is characterized in that the equipment includes:
First module: the first D2D identifier is obtained for receiving the first signaling in current time window；
Second module: following one is obtained for receiving the second signaling in current time window:
The first information: if the first information is state 1, the 2nd D2D identifier is the first D2D identifier；If the first information is
State 2, the 2nd D2D identifier are not that the first D2D identifier or the 2nd D2D identifier are not present；
- the second information: if the second information is the integer within the value range of D2D identifier, the second information is the 2nd D2D mark
Know symbol；If the second information is the fixed integer except the value range of the D2D identifier, the 2nd D2D identifier is not present；
Wherein, the time window is the period that length is N milliseconds in time-domain, and the N is positive integer, the 2nd D2D identifier
It is counterpart of the first D2D identifier in previous time window, the first signaling finds that signaling bearer, the D2D find signal by D2D
Including a characteristic sequence and a block of information.
11. equipment according to claim 10, which is characterized in that the equipment further include:
Third module: for receiving the first D2D signal in current time window, the first D2D signal is by the first D2D identifier mark
Know；
Wherein, if the user equipment receives, the second signaling obtains the first information and the first information is state 1 or the use
Family equipment the second signaling of reception the second information of acquisition and the second information are that the fixation within the value range of the D2D identifier is whole
The auxiliary information based on passing D2D signal is utilized in number, the reception of the first D2D signal；Otherwise, the reception of the first D2D signal does not have
Have and utilizes the auxiliary information based on passing D2D signal；Passing D2D signal is received before current time window by first
D2D signal of the sender of D2D signal in user equipment identifiers mark at that time.
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| JP6556950B2 (en) * | 2015-10-30 | 2019-08-07 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Signal transmitting apparatus, signal receiving apparatus, symbol timing synchronization method, and system |
| CN108631905B (en) * | 2017-03-15 | 2021-06-15 | 华为技术有限公司 | Data sending method and device, terminal equipment and network equipment |
| CN111586649B (en) * | 2019-02-15 | 2022-02-01 | 大唐高鸿智联科技(重庆)有限公司 | Method for updating near field communication user equipment identification and user equipment |
| CN115412211B (en) * | 2021-05-10 | 2024-04-30 | 维沃移动通信有限公司 | Method, device, terminal and network side equipment for determining uplink transmission time window |
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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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| US8989089B2 (en) * | 2011-08-18 | 2015-03-24 | Ofinno Technologies, Llc | Automobile data transmission |
| CN102970686B (en) * | 2011-09-02 | 2015-04-08 | 上海无线通信研究中心 | Method for long term evolution device to device (LTED2D) communication working on ISM frequency band |
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| CN102036359A (en) * | 2009-09-29 | 2011-04-27 | 大唐移动通信设备有限公司 | Method and equipment for transmitting uplink transmission information |
| 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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