CN104254132B - Dispatching method and device in a kind of D2D system - Google Patents
Dispatching method and device in a kind of D2D system Download PDFInfo
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- CN104254132B CN104254132B CN201310258269.5A CN201310258269A CN104254132B CN 104254132 B CN104254132 B CN 104254132B CN 201310258269 A CN201310258269 A CN 201310258269A CN 104254132 B CN104254132 B CN 104254132B
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Abstract
The invention proposes a kind of UE that network sends that auxiliary information enables participation D2D to communicate in D2D communication to share the same DCI.In one embodiment, the antenna port number configured when the transmission D2D data of the antenna port number and its pairing UE that are configured when serving cell instruction UE sends D2D data about it.By using technical solution provided in the present invention, solve the problems, such as that the UE of D2D communication shares that the size that the same DCI is encountered is incompatible, while utmostly maintaining the compatibility with existing system.
Description
Technical field
The present invention relates to devices to the scheme dispatched in device (D2D-Device to Device) system, more particularly to
Based on long term evolution (LTE-Long Term Evolution) device to the tune of device (D2D-Device to Device) system
Degree scheme.
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, protection interval, uplink synchronous time slot
Three parts are constituted.According to the difference of ascending-descending subframes ratio, 3GPP defines the TDD-LTE system frame structure such as table 1, wherein D
Indicate that downlink subframe, U indicate sub-frame of uplink, S is special subframe:
Table 1:TDD LTE frame structure
In LTE system, the communication between base station and UE passes through Physical Downlink Control Channel (PDCCH-Physical
Downlink Control Channel) it is scheduled, the information transmitted on PDCCH becomes Downlink Control Information (DCI-
Downlink Control Information).PDCCH is according to being divided into dynamic dispatching (DS-Dynamic dispatching cycle
Scheduling) and semi-persistent scheduling (SPS-Semi Persistent Scheduling), the former dispatches first resource distribution,
The latter periodically dispatches resource allocation until resource discharges.It is compared with DS, the expense of PDCCH can be significantly reduced in SPS.
Each DCI and unique wireless network temporary identify (RNTI-Radio Network Temporary
Identifier it) binds, binds here means that:
● the physical location of DCI determines that-UE is operated by blind decoding by multiple possible position candidates that RNTI value indicates
The physical location of DCI is found in the multiple position candidate
● cyclic redundancy check (the CRC-Cyclic Redundancy Check) bit of DCI uses RNTI bit scramble
The type of RNTI corresponding to DS and SPS is cell RNTI(C-RNRI:Cell RNTI respectively), semi-persistent scheduling
RNTI(SPS C-RNTI).In general, system is that each UE distributes unique C-RNTI or SPS C-RNTI.
According to the up-downlink direction of scheduled resource, DCI can be divided into uplink scheduling format (format) and descending scheduling
Format, the former includes DCI format 0/4, and the latter includes DCI format 1/1A/1B/1C/1D/2/2A/2B/2C/2D.For UE
Speech, other than specifically defined (such as DCI format 0 and DCI format 1A), the size (i.e. bit number) of each DCI format is not
It is same as the size of other DCI formats.This characteristic is used for the DCI blind decoding-UE of the side UE progress according to the DCI ruler demodulated
Very little determining DCI format.
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, the sub-frame of uplink that UE occupies subframe (TDD) is used for D2D communication, and (downlink subframe needs further to be begged for
By).
It is scheduling scheme that one, which needs the problem of discussing, in D2D, according to the description of 3GPP specification TS22.278, wireless access
Net should control the scheduling of resource of D2D communication link.The present invention devises specific scheduling scheme.
Summary of the invention
In order to reduce the expense of PDCCH, an intuitive method is to allow to participate in the UE of D2D communication while receiving same
DCI, i.e. D2D transmitting-receiving UE share the same RNTI.Inventors discovered through research that this method is when reusing the DCI of existing definition
The incompatible problem of DCI size can be encountered.The size of DCI may be influenced by following several factors:
● the transmission antenna port number of configuration, for DCI format { 4,1B, 1D, 2,2A }, 4 transmission antenna ports are than 2
The DCI size of transmission antenna port has more 2~3 bits.
● CSI request bit number may be 1~2 bit according to application scenarios difference for DCI format { 0,4 }
● SRS request bit number may be according to application scenarios difference for DCI format { 0,1A, 2B, 2C, 2D }
0~1 bit
For CSI request bit number and SRS request bit number, the UE for participating in D2D communication can share identical match
It sets, therefore not will lead to different DCI sizes.And for the transmission antenna port number of configuration, the UE for participating in D2D communication is likely to
It is equipped with different antenna port numbers, therefore leads to different DCI sizes.
Such as UE1 and UE2 carries out D2D communication, UE1 is configured with 4 antenna ports, and UE2 is configured with 2 antenna ports, and system is adopted
UE1 and UE2 is dispatched with DCI format 4.According to existing definition, 4 size of DCI format of 4 ports and 2 port UE are different, because
This UE1 and UE2 can not directly share the same DCI.
The invention discloses a kind of methods in user equipment (UE), wherein includes the following steps:
It receives the first signaling and obtains wireless network temporary mark (RNTI)
It receives the second signaling and obtains first antenna port number
It receives third signaling and obtains the second antenna port number
Determine the configuration sized of target downlink control signaling (DCI), the target DCI is identified by the RNTI
The blind Detecting for being directed to the target DCI is executed according to the configuration sized
Wherein, the configuration sized is one in first size and the second size, and the first size is the target
DCI is directed to the size of the first antenna port number, and described second is directed to second antenna port having a size of the target DCI
Several sizes.
RNTI is shared by 2 or multiple UE that carry out D2D communication.Receive the first signaling, the second signaling, third signaling
Step sequence not stringent in time.The physical location of the target DCI is the multiple candidate bits identified by the RNTI
One in setting, the CRC of the target DCI passes through the RNTI code-scrambling operation.The first size is that the target DCI is being sent out
When antennas port number is the first antenna port number, the DCI size defined according to existing standard, second size is institute
Target DCI is stated when transmission antenna port number is second antenna port number, the DCI size defined according to existing standard.
Specifically, according to an aspect of the present invention, which is characterized in that if the time slot scheduling of the target DCI is several
According to sending time slots, the configuration sized is first size, if the time slot scheduling of the target DCI is data receiver time slot, institute
Stating configuration sized is the second size.
Specifically, according to an aspect of the present invention, which is characterized in that the dispatching cycle of the target DCI be dynamic or
Person is semi-static.
The time slot scheduling is the basic thread of D2D communication, is a subframe, multiple subframes, or is less than one
Subframe.For dynamic dispatching DCI, if reusing existing LTE system descending scheduling timing, the time slot scheduling is the mesh
Mark the reception subframe of DCI；If reusing existing LTE system uplink scheduling timing, the time slot scheduling is connecing for the target DCI
The kth subframe after subframe is received, wherein k is 4 in FDD system, is in a tdd system the integer between 4 to 7 (according to tdd frame knot
Structure).For semi-persistent scheduling DCI, the time slot scheduling is s+NP after the reception subframe of the target DCI
Frame, wherein s is 0 for descending scheduling DCI, is that 0 or integer related with tdd frame structure, N are positive for uplink scheduling DCI
Integer, P are the semi-persistent scheduling intervals configured by high-level signaling.
Specifically, according to an aspect of the present invention, which is characterized in that further include one of following steps:
A. the 4th signaling for receiving base station determines that the time slot scheduling of the target DCI is D2D data sending time slots or D2D
Data receiver time slot, the 4th signaling are high-level signaling
B. receive pairing UE the 5th signaling determine the target DCI time slot scheduling be D2D data sending time slots or
D2D data receiver time slot
C. the time slot scheduling for voluntarily determining the target DCI is D2D data sending time slots or D2D data receiver time slot
Above-mentioned A is suitable for sending and receiving for system side control D2D UE, and above-mentioned B and C are suitable for D2D UE and decide in its sole discretion
Time slot is sent and received, wherein matching UE in above-mentioned B is that currently to describe UE be currently to describe UE from UE), above-mentioned C to be to main UE(
Main UE(pairing UE is from UE).5th signaling can be high-level signaling or physical layer signaling.
Specifically, above-mentioned aspect according to the present invention, which is characterized in that further include walking as follows if the step is C
It is rapid:
It sends the 5th signaling and indicates that the time slot scheduling of the target DCI is that D2D data sending time slots or D2D data connect
Time receiving gap
As main UE, needs to send signaling and indicate from UE sending and receiving about D2D data.5th signaling can be with
It is high-level signaling or physical layer signaling.
Specifically, above-mentioned another aspect according to the present invention, which is characterized in that further include following steps:
If the time slot scheduling of the target DCI is that D2D data sending time slots are adopted according to the scheduling of the target DCI
D2D data are sent with first antenna port number
If the time slot scheduling of the target DCI is that D2D data receiver time slot connects according to the scheduling of the target DCI
Receive the D2D data that the second antenna port number of use from pairing UE is sent.
First antenna port number is the antenna port number that system is configured for current description UE, and the second antenna port number is to be
It unites currently to describe the antenna port number that the pairing UE of UE is configured.
Specifically, according to an aspect of the present invention, which is characterized in that the format of the target DCI be 4,1B, 1D, 2,
One of 2A }
In existing DCI format, format 4/1B/1D/2/2A size generates variation because of transmission antenna port number.It considers
D2D communication occurs in ascending resource, if system side is scheduled D2D communication using uplink scheduling format, the target DCI
Format is 4.
Specifically, according to an aspect of the present invention, which is characterized in that the second signaling is wireless heterogeneous networks (RRC-
Radio Resource Control) layer signaling, third signaling is wireless heterogeneous networks (RRC) layer signaling.
Second signaling and third signaling can be with absolute coding or combined codings.As one embodiment, the target DCI
Format is 4, and the second signaling and third signaling reuse existing rrc layer AntennaInfoUL information particle (IE- respectively
Information Element) structure, that is, indicate whether using 4 antenna ports and transmission mode.As another embodiment,
The target DCI format is 2, and the second signaling and third signaling indicate first antenna by an IE by the way of combined coding
Port number and the second antenna port number.
Specifically, according to an aspect of the present invention, which is characterized in that the first signaling is high-level signaling, and the RNTI exists
It is shared between the UE and the pairing UE of the UE.
First signaling is media intervention control (MAC-Media Access Control) layer signaling either RRC signaling.
The invention discloses a kind of methods in system equipment, wherein includes the following steps:
Send the first signaling instruction wireless network temporary mark (RNTI)
It sends the second signaling and indicates first antenna port number
It sends third signaling and indicates the second antenna port number
Determine the configuration sized of target downlink control signaling (DCI), the target DCI is identified by the RNTI
The target DCI is sent according to the configuration sized
Wherein, the configuration sized is one in first size and the second size, and the first size is the target
DCI is directed to the size of the first antenna port number, and described second is directed to second antenna port having a size of the target DCI
Several sizes.
Specifically, according to an aspect of the present invention, which is characterized in that if the time slot scheduling of the target DCI is several
According to sending time slots, the configuration sized is first size, if the time slot scheduling of the target DCI is data receiver time slot, institute
Stating configuration sized is the second size.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
It sends the 4th signaling and indicates that the time slot scheduling of the target DCI is that D2D data sending time slots or D2D data connect
Time receiving gap, the 4th signaling are high-level signaling
Above-mentioned aspect means sending and receiving for system side control D2D UE.
Specifically, according to an aspect of the present invention, which is characterized in that further include following steps:
Receiving the 5th signaling and obtaining the time slot scheduling of the target DCI is that D2D data sending time slots or D2D data connect
Time receiving gap
Above-mentioned aspect means sending and receiving for main UE control D2D data, while main UE needs to report scheduling result
System side.
Specifically, according to an aspect of the present invention, which is characterized in that the format of the target DCI be 4,1B, 1D, 2,
One of 2A }
Specifically, according to an aspect of the present invention, which is characterized in that the dispatching cycle of the target DCI be dynamic or
Person is semi-static
The invention discloses a kind of user equipment (UE), which is characterized in that the equipment includes:
First module: it receives the first signaling and obtains wireless network temporary mark (RNTI)
Second module: it receives the second signaling and obtains first antenna port number
Third module: it receives third signaling and obtains the second antenna port number
4th module: determining the configuration sized of target downlink control signaling (DCI), and the target DCI is marked by the RNTI
Know
5th module: the blind Detecting for being directed to the target DCI is executed according to the configuration sized
Wherein, if the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size,
If the time slot scheduling of the target DCI is data receiver time slot, the configuration sized is the second size, and the first size is
The target DCI is directed to the size of the first antenna port number, and described second is directed to described second having a size of the target DCI
The size of antenna port number.
The invention discloses a kind of system side apparatus, which is characterized in that the equipment includes:
First module: the first signaling instruction wireless network temporary mark (RNTI) is sent
Second module: it sends the second signaling and indicates first antenna port number
Third module: it sends third signaling and indicates the second antenna port number
4th module: determining the configuration sized of target downlink control signaling (DCI), and the target DCI is marked by the RNTI
Know
5th module: the target DCI is sent according to the configuration sized
Wherein, if the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size,
If the time slot scheduling of the target DCI is data receiver time slot, the configuration sized is the second size, and the first size is
The target DCI is directed to the size of the first antenna port number, and described second is directed to described second having a size of the target DCI
The size of antenna port number.
The present invention solve the problems, such as in D2D communication UE because antenna port configures it is different due to can not share the same DCI, UE
The size of target DCI is determined by obtaining pairing UE port number.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 D2D UE reception base station signaling according to an embodiment of the invention and determines that target DCI configures ruler
Very little schematic diagram；
Fig. 2 shows the schematic diagrames of base station sending time slots according to an embodiment of the invention distribution instruction；
Fig. 3 shows the schematic diagram of UE sending time slots distribution instruction according to an embodiment of the invention；
Fig. 4 shows D2D UE according to an embodiment of the invention and shares the schematic diagram that DCI is communicated；
Fig. 5 shows the structural block diagram according to an embodiment of the invention for the device in UE；
Fig. 6 shows the structural block diagram according to an embodiment of the invention for the device in base station；
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 D2D UE reception base station signaling and determines target DCI configuration sized, as shown in Fig. 1.Attached drawing 1
In, cell N1 is the serving cell of UE U1, and UE U1 participates in D2D communication.
For cell N1, in step S11, sends the first signaling and indicate RNTI, first signaling is MAC signaling；Step
In S12, the antenna port number (first antenna port number) when the second signaling instruction UE U1 executes the transmission of D2D data is sent, it is described
Second signaling is RRC signaling；In step S13, when sending third signaling instruction UE U1 execution D2D data receiver, pairing UE is used for
The antenna port number (the second antenna port number) that D2D data are sent, the third signaling are RRC signaling；In step S14, determine
The configuration sized of target DCI；In step S15, target DCI is sent.
The detailed description of above-mentioned S14 step are as follows: cell N1 determines the lattice of the scheduling UE and target DCI of target DCI first
Formula (selects one kind from the candidate format of the target DCI), and the scheduling UE is the time slot scheduling transmission D2D in target DCI
The UE- of data may be the UE U1 either pairing UE of UE U1.Cell N1 is then according to the format of the target DCI and described
The transmission antenna port number (first antenna port number or the second antenna port number) of scheduling UE determines the configuration ruler of target DCI
It is very little.The candidate format of the target DCI may be a kind of (such as format 4) or a variety of (such as format 1B, 1D, 2,2A).
For UE U1, in step S21, receives the first signaling and obtain RNTI, first signaling is MAC signaling；Step
In S22, receive the second signaling obtain execute D2D data send when antenna port number (first antenna port number), described second
Signaling is RRC signaling；In step S23, when receiving third signaling acquisition execution D2D data receiver, pairing UE is sent out for D2D data
The antenna port number (the second antenna port number) sent, the third signaling are RRC signaling；In step S24, target DCI needle is determined
To the configuration sized of each candidate format；In step S25, blind Detecting receives target DCI, that is, is directed to each candidate's size,
The DCI that corresponding format is detected in multiple position candidates that the RNTI is defined, judges whether to be correctly detecting target according to CRC
DCI。
The detailed description of above-mentioned S24 step are as follows: UE U1 determines the candidate of the scheduling UE and target DCI of target DCI first
Format, it may be UE U1 either UE U1 that the scheduling UE, which is in the UE- of the time slot scheduling transmission D2D data of target DCI,
Match UE.UE U1 is then according to transmission antenna port number (the first antenna end of the format of the target DCI and the scheduling UE
Mouthful number or the second antenna port number) determine the configuration sized of target DCI.If the candidate format of the target DCI is not unique
Configuration sized then will be determined to each candidate format in step S24.
1 D2D UE is described in attached drawing 1, for multiple D2D UE, the step S11, S12, S13 of attached drawing 1, S14 needs
It is executed once for each D2D UE, and step S15 is only executed once in base station side, i.e., base station sends a shared target
DCI is received by all D2D UE.Step S21, S22, S23, S24, S25 are executed in each D2D UE.
Embodiment 2
Embodiment 2 illustrates the distribution instruction of base station sending time slots, i.e., for each time slot scheduling, indicates each participation
The UE of D2D communication is to send UE or receive UE in the time slot scheduling, as shown in Fig. 2.Embodiment 2 is walked in embodiment 1
The detailed description of the scheduling UE of target DCI is determined in rapid S14 and step S24.
In step s 141, cell N1 sends the 4th signaling instruction UE U1 about time slot allocation, i.e. UE U1 is at which
Gap is to send UE, which time slot to be to receive UE at.In step S241, UE U1 receives the 4th signaling and obtains time slot allocation instruction.
4th signaling is high-level signaling, and semi-persistent scheduling is to reduce signaling overheads.
Step S141, i.e. sending time slots distribution instruction will be executed for different D2D UE, cell N1.
Embodiment 3
Embodiment 3 illustrates main UE sending time slots distribution instruction, i.e., for each time slot scheduling, it is logical that instruction participates in D2D
The slave UE of letter is to send UE or receive UE in the time slot scheduling, as shown in Fig. 3.Embodiment 3 is the alternative of embodiment 2
Case.In attached drawing 3, cell N1 is the serving cell of UE U1 and UE U2, and UE U1 and UE U2 carry out D2D communication, and UE U1 is main
UE, UE U2 are from UE.
In step S242, UE U1 sends the 5th signaling instruction UE U2 about time slot allocation, i.e. UEU2 is in which time slot
It is to send UE, which time slot is to receive UE at.In step S342, UE U2 receives the 5th signaling and obtains time slot allocation instruction.?
In step S142, cell N1 receives the 5th signaling and obtains time slot allocation instruction.
The 5th signaling in embodiment 3 is shared between cell N1 and UE U2, and an alternative solution is that UE U1 sends list
Only signaling reports time slot allocation to indicate to cell N1.
5th signaling is high-level signaling or physical layer signaling.High-level signaling realizes semi-persistent scheduling to reduce signaling
Expense, physical layer signaling realize more flexible scheduling.
Embodiment 4
Embodiment 4 illustrates D2D UE and shares the process that dynamic DCI is communicated, as shown in Fig. 4.In attached drawing 4, cell
N1 is the serving cell of UE U1 and UE U2, and UE U1 and UE U2 carry out D2D communication.
Cell N1 sends the first DCI in the step s 100, and UE U1 receives the first DCI in step s 200, and UE U2 is in step
The first DCI is received in rapid S300.The scheduling timing reference LTE uplink dynamic dispatching timing of first DCI, i.e. the first DCI of scheduling hair
Sending subframe n+k, k after subframe n is 4 to FDD, is 4~7 integer to TDD.It is assumed that UE U1 is to send UE in subframe n+k
And UE U2 is to receive UE(concrete configuration referring to embodiment 2, embodiment 3).In step s 201, UE U1 is according to the first DCI's
Scheduling sends the first data in subframe n+k, and in step S301, UE U2 is received according to the scheduling of the first DCI in subframe n+k
First data.Cell N1 sends the 2nd DCI in step s101, and UE U1 receives the 2nd DCI in step S202, and UE U2 is in step
The 2nd DCI is received in rapid S302.The scheduling timing reference LTE uplink dynamic dispatching timing of 2nd DCI, i.e. the 2nd DCI of scheduling hair
Sending subframe m+k, k after subframe m is 4 to FDD, is 4~7 integer to TDD.It is assumed that UE U2 is to send UE in subframe m+k
And UE U1 is to receive UE(concrete configuration referring to embodiment 2, embodiment 3).In step S303, UE U2 is according to the 2nd DCI's
Scheduling sends the second data in subframe m+k, and in step S203, UE U1 is received according to the scheduling of the 2nd DCI in subframe m+k
Second data.
Embodiment 5
Embodiment 5 illustrates D2D UE and shares the process that semi-persistent scheduling DCI is communicated, as shown in Fig. 4.Embodiment
5 and the difference of embodiment 4 be: the first DCI is the semi-persistent scheduling DCI of SPS C-RNTI mark, the step in attached drawing 4 in F1 frame
Suddenly it is not present, furthermore the scheduling timing of the first DCI abides by LTE semi-persistent scheduling timing.
Cell N1 sends the first DCI in the step s 100, and UE U1 receives the first DCI in step s 200, and UE U2 is in step
The first DCI is received in rapid S300.The scheduling timing reference LTE uplink semi-persistent scheduling timing of first DCI, i.e. the first DCI of scheduling
The subframe n+s+NP after subframe n is sent, wherein s is 0 for FDD, is integer related with tdd frame structure, N for TDD
For positive integer, P is the semi-persistent scheduling interval configured by high-level signaling.
It is assumed that UE U1 is transmission UE and UE U2 is to receive UE in subframe n+s+P.In step s 201, UE U1 is according to
The scheduling of one DCI, subframe n+s+P send the first data, in step S301, UE U2 according to the first DCI scheduling, in son
Frame n+s+P receives the first data.It is assumed that UE U2 is transmission UE and UE U1 is to receive UE in subframe n+s+2P.In step S303
In, UE U2 sends the second data in subframe n+s+2P, in step S203, UE U1 is according to first according to the scheduling of the first DCI
The scheduling of DCI receives the second data in subframe n+s+2P.
Embodiment 6
Embodiment 6 illustrates the structural block diagram for the device in UE, as shown in Fig. 5.In attached drawing 5, device 400 is by 5
A device is constituted: reception device 401,402,403, determining device 404, detection device 405.Reception device 401 receives the first letter
It enables and obtains RNTI, reception device 402 receives the second signaling and obtains first antenna port number, and reception device 403 receives third signaling
The second antenna port number is obtained, determining device 404 determines the candidate's size (one or more) of target DCI, detection device 405
According to the physics position candidate blind Detecting target DCI that the size of determining target DCI and RNTI are indicated, i.e., for each time
Size is selected, the DCI of corresponding format is detected in multiple position candidates that the RNTI is defined, judges whether correctly to examine according to CRC
Measure target DCI.
Embodiment 7
Embodiment 7 illustrates the structural block diagram for the device in base station, as shown in Fig. 6.In attached drawing 6, device 500 by
5 devices are constituted: sending device 501,502,503, determining device 504, sending device 505.Sending device 501 sends the first letter
Instruction RNTI is enabled, sending device 502 sends the second signaling and indicates that first antenna port number, sending device 503 send third signaling
Indicate that the second antenna port number, determining device 504 determine the size of target DCI, sending device 505 is according to determining target DCI
Size target DCI is encoded, and select suitable physical location to send according to the physics position candidate of RNTI instruction.
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 (15)
1. a kind of method in user equipment (UE), wherein include the following steps:
It receives the first signaling and obtains wireless network temporary mark RNTI
It receives the second signaling and obtains first antenna port number
It receives third signaling and obtains the second antenna port number
Determine the configuration sized of target downlink control signaling DCI, the target DCI is identified by the RNTI
The blind Detecting for being directed to the target DCI is executed according to the configuration sized
Wherein, the configuration sized is one in first size and the second size, and the first size is the target DCI needle
To the size of the first antenna port number, described second is directed to second antenna port number having a size of the target DCI
Size；If the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size, if described
The time slot scheduling of target DCI is data receiver time slot, and the configuration sized is the second size.
2. the method according to claim 1, wherein further including one of following steps:
A. the 4th signaling for receiving base station determines that the time slot scheduling of the target DCI is D2D data sending time slots or D2D data
Time slot is received, the 4th signaling is high-level signaling
B. the 5th signaling for receiving pairing UE determines that the time slot scheduling of the target DCI is D2D data sending time slots or D2D number
According to reception time slot
C. the time slot scheduling for voluntarily determining the target DCI is D2D data sending time slots or D2D data receiver time slot.
3. according to the method described in claim 2, it is characterized in that, further including following steps if the step is C:
When the 5th signaling of transmission indicates that the time slot scheduling of the target DCI is D2D data sending time slots or D2D data receiver
Gap.
4. according to the method described in claim 2, it is characterized in that, further including following steps:
If the time slot scheduling of the target DCI is D2D data sending time slots, according to the scheduling of the target DCI, using
One antenna port number sends D2D data
If the time slot scheduling of the target DCI is D2D data receiver time slot, according to the scheduling of the target DCI, receives and
The D2D data sent from the second antenna port number of use of pairing UE.
5. the method according to claim 1, wherein the format of the target DCI is in { 4,1B, 1D, 2,2A }
One kind.
6. the method according to claim 1, wherein the dispatching cycle of the target DCI is that dynamic or half are quiet
State.
7. the method according to claim 1, wherein the second signaling is wireless heterogeneous networks (RRC) layer signaling,
Three signalings are wireless heterogeneous networks (RRC) layer signalings.
8. the method according to claim 1, wherein the first signaling is media intervention control (MAC) layer signaling, institute
RNTI is stated to share between the UE and the pairing UE of the UE.
9. a kind of method in system equipment, wherein include the following steps:
It sends the first signaling instruction wireless network temporary and identifies RNTI
It sends the second signaling and indicates first antenna port number
It sends third signaling and indicates the second antenna port number
Determine the configuration sized of target downlink control signaling DCI, the target DCI is identified by the RNTI
The target DCI is sent according to the configuration sized
Wherein, the configuration sized is one in first size and the second size, and the first size is the target DCI needle
To the size of the first antenna port number, described second is directed to second antenna port number having a size of the target DCI
Size；If the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size, if described
The time slot scheduling of target DCI is data receiver time slot, and the configuration sized is the second size.
10. according to the method described in claim 9, it is characterized in that, further including following steps:
When the 4th signaling of transmission indicates that the time slot scheduling of the target DCI is D2D data sending time slots or D2D data receiver
Gap, the 4th signaling are high-level signaling.
11. according to the method described in claim 9, it is characterized in that, further including following steps:
When receiving the 5th signaling to obtain the time slot scheduling of the target DCI being D2D data sending time slots or D2D data receiver
Gap.
12. according to the method described in claim 9, it is characterized in that, the format of the target DCI is in { 4,1B, 1D, 2,2A }
One kind.
13. according to the method described in claim 9, it is characterized in that, the dispatching cycle of the target DCI is that dynamic or half are quiet
State.
14. a kind of user equipment (UE), which is characterized in that the equipment includes:
First module: it receives the first signaling and obtains wireless network temporary mark RNTI
Second module: it receives the second signaling and obtains first antenna port number
Third module: it receives third signaling and obtains the second antenna port number
4th module: determining the configuration sized of target downlink control signaling DCI, and the target DCI is identified by the RNTI
5th module: the blind Detecting for being directed to the target DCI is executed according to the configuration sized
Wherein, if the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size, if
The time slot scheduling of the target DCI is data receiver time slot, and the configuration sized is the second size, and the first size is described
Target DCI is directed to the size of the first antenna port number, and described second is directed to second antenna having a size of the target DCI
The size of port number；If the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size,
If the time slot scheduling of the target DCI is data receiver time slot, the configuration sized is the second size.
15. a kind of system side apparatus, which is characterized in that the equipment includes:
First module: it sends the first signaling instruction wireless network temporary and identifies RNTI
Second module: it sends the second signaling and indicates first antenna port number
Third module: it sends third signaling and indicates the second antenna port number
4th module: determining the configuration sized of target downlink control signaling DCI, and the target DCI is identified by the RNTI
5th module: the target DCI is sent according to the configuration sized
Wherein, if the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size, if
The time slot scheduling of the target DCI is data receiver time slot, and the configuration sized is the second size, and the first size is described
Target DCI is directed to the size of the first antenna port number, and described second is directed to second antenna having a size of the target DCI
The size of port number；If the time slot scheduling of the target DCI is data sending time slots, the configuration sized is first size,
If the time slot scheduling of the target DCI is data receiver time slot, the configuration sized is the second size.
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| CN107277738B (en) * | 2016-04-08 | 2021-02-12 | 华为技术有限公司 | V2V communication method, device and system |
| EP3585115B1 (en) | 2017-03-30 | 2021-09-22 | Huawei Technologies Co., Ltd. | Data exchange method, terminal device, and network device |
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