CN104066194B - Data transmission scheduling and data transmission method and equipment - Google Patents
Data transmission scheduling and data transmission method and equipment Download PDFInfo
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- CN104066194B CN104066194B CN201310088492.XA CN201310088492A CN104066194B CN 104066194 B CN104066194 B CN 104066194B CN 201310088492 A CN201310088492 A CN 201310088492A CN 104066194 B CN104066194 B CN 104066194B
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Abstract
The embodiment of the invention discloses a kind of data transmission scheduling and data transmission method and equipment, are related to wireless communication field, for reducing system signaling expense.In the present invention, network side generates the DCI for including instruction information field, the instruction information field, which carries, sends the instruction information that terminal transmission data and reception terminal in the specified resource of D2D link receive data in the specified resource of D2D link, the DCI of generation is scrambled using the RNTI for dispatching group communication or broadcast communication, and sends the scrambled DCI of the RNTI；Terminal is after the DCI, determine itself to be to send terminal or receive terminal according to the instruction information in the DCI, if sending terminal, then to reception terminal transmission data in the specified resource of D2D link, if receiving terminal, then data are received in the specified resource of D2D link.This programme effectively reduces the signaling overheads of system.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of data transmission scheduling and data transmission method and equipment.
Background technology
In traditional cellular telecommunication art, two terminals（User Equipment, UE）Between data communication flow journey such as
Shown in Fig. 1.The business such as the voice-and-data of two terminals are by respectively resident base station（eNB）And core net interacts.
Terminal direct connection（Device-to-Device, D2D）Technology, which refers to neighbouring terminal, to lead in short range
The mode that direct connected link carries out data transmission is crossed, Centroid need not be passed through（That is base station）It is forwarded, as shown in Figure 2.D2D
The short haul connection feature and direct communication mode of technology itself make it have following advantage：
First, terminal carrying out direct communication in close range mode can realize higher data rate, lower delay and lower work(
Consumption；
Second, using the short distance feature of user terminal widely distributed in network and D2D communication links, may be implemented
Frequency spectrum resource efficiently uses；
The direct communication mode of third, D2D can adapt to such as wireless point-to-point（Peer to Peer, P2P）Etc. business
Local data shares demand, provides the data service with flexible adaptation ability；
4th, D2D direct communication can utilize substantial amounts in network and widely distributed communication terminal is to expand network
Coverage area.
Long term evolution（Long Term Evolution, LTE）D2D technologies refer to be operated in LTE authorized spectrum bands by
The D2D communications of LTE network control.On the one hand the advantage of D2D technologies can be given full play to, while the control of LTE network can also
Overcome the problems, such as some of traditional D2D technologies, such as interferes uncontrollable etc..The introducing of LTE D2D characteristics will make LTE technologies from simple
The wireless mobile cellular communication technology towards general interconnection technique（Universal Connectivity Technology）Side
To evolution.
When D2D communications are introduced on the authorized frequency bands of LTE, D2D communication links will share radio resource with cellular communication,
This is also the most basic problem for merging the D2D communication technologys in the cellular system.The sharing mode of radio resource can be divided into two kinds：
The shared and multiplex mode of orthogonal manner is shared.It refers to being used in radio resource that it is shared, which to carry out radio resource, using orthogonal manner
On quadrature divide is carried out to radio resource in a manner of either statically or dynamically, so that cellular communication and D2D is communicated using mutually orthogonal
Resource.It refers to that D2D is communicated with reasonable manner to cell resource currently in use to use multiplex mode that it is shared to carry out radio resource
Shared reuse is carried out, and interference is limited within the scope of certain level.
In the communication of D2D, other than the one-to-one communication mode between user, typical application scenarios further include
Group/broadcast communication is carried out between D2D user, the mode realized can be as follows：
One terminal sends identical data by single transmission, to all UE in a communication group（Group communication）；
One UE sends identical data by single transmission, to all neighbouring UE authorized（Broadcast communication）；
Group/broadcast communication scene can be used for fire-fighting, rescue and anti-terrorism in public safety applications etc..
In LTE and LTE follow-up systems, the transmission of Traffic Channel is to pass through Physical Downlink Control Channel（Physical
Downlink Control Channel, PDCCH）The Physical Downlink Control Channel of/enhancing（Enhanced PDCCH, E-
PDCCH）The Downlink Control Information of carrying（Downlink control information, DCI）It indicates, to target terminal
Scheduling is to pass through radio network temporary identifier（Radio Network Temporary Identity, RNTI）Mark, RNTI
With DCI format（format）Cyclic redundancy check（Cyclic Redundancy Check, CRC）Bit carries out exclusive or, such as schemes
Shown in 3, after terminal receives PDCCH/E-PDCCH, breath of collecting mail is docked according to the RNTI of itself and carries out solution exclusive or, is sentenced according to result
Whether the current DCI that breaks is the DCI of itself.
In LTE system, terminal needs the channel resource of the PDCCH/E-PDCCH of blind examination, and there are two main classes, respectively public
Search space and the exclusive search spaces UE altogether, it is specific as follows：
Public search space：Refer to that all terminals are required for the PDCCH/E-PDCCH channel resources monitored, can carry
Broadcast control information, random access response information, the power control information of multicast and the exclusive control information of UE are different
It is distinguished by RNTI between information, two kinds of DCI bit lengths of blind examination, respectively DCI in public search space
The bit length of format1C and DCI format0/1A.
Search space exclusive UE：Refer to that terminal oneself needs the PDCCH/E-PDCCH channel resources monitored, it is specific to believe
The position of road resource is the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI by UE（C-RNTI）And the formula determination of search space,
The exclusive business information of UE and high-rise signaling information can be carried.According to whether supporting uplink in search space exclusive UE
（UpLink, UL）Multiple-input and multiple-output（MIMO）Transmission distinguish two kinds or three kinds DCI bit lengths of blind examination, if do not supported
The transmission of UL MIMO, UE only 2 kinds of DCI bit lengths of blind examination are DCI format0/1A and a kind of and downlink transfer pattern respectively
Relevant DCI format X（DCI format can be format1, format1B, format1D, format2, format2A,
One kind in the downlinks DCI format such as format2B, format2C）.If supporting the transmission of UL MIMO, 3 kinds of DCI of UE blind examinations
Bit length is DCI format0/1A, DCI format4 respectively（The relevant DCI formats of UL MIMO）It is passed with downlink with a kind of
The defeated relevant DCIformat X of pattern.
In LTE versions 8/9/10（Rel-8/9/10）In, for the public search space and UE of UE blind examinations on a carrier wave
The polymerization grade and candidate channel of exclusive search space（candiate）Number it is as shown in table 1 below（Referring in RS36.213
9.1.1 the description of chapters and sections）：
Table 1
The formula of the search spaces UE is：
Wherein L indicates polymerization grade, and what m was indicated is PDCCH candidate channels
Index, m=0 ..., M(L)- 1, NCCE,kThe CCE number that be in subframe K include indicated, i=0 ..., L-1, Yk=(A
Yk-1) modD, Y-1=nRNTI≠ 0, A=39827, D=65537.
The exemplary plot of PDCCH search space is given in Fig. 4, wherein UE assumes Y in exclusive spacek=0。
It is identical as above for the public search space of UE blind examinations on a carrier wave in LTE Rel-11, for such as
The exclusive search spaces UE of E-PDCCH shown in fig. 5 define the number of different polymerization grades and E-PDCCH candidate channels.Its
The resource of the occupancy of middle E-PDCCH is to pass through wireless heterogeneous networks（RRC）Signal deployment, it is located at Physical Downlink Shared Channel
（PDSCH）The mode in region, configuration includes time domain（Subframe）And frequency domain（PRB）, retouched referring specifically to 9.1.4 chapters and sections in 36.213
It states, which is not described herein again.
The different DCI ratios of total blind examination numbers of the UE on a carrier wave and the number of total candidate and blind examination
The number of bit length is related.By taking LTE Rel-10 as an example：
The blind examination number of public search space：2 kinds of DCI bit lengths, the number of total candidate are（4+2）=6；It is blind
Examining number is：2*(4+2)=12；
The blind examination number of search space exclusive UE：The number of total candidate is（6+6+2+2）=16；If do not propped up
The transmission of UL MIMO is held, then blind examination number is：2*（6+6+2+2）=32；If supporting the transmission of UL MIMO, blind examination number
For：3*（6+6+2+2）=48；Total blind examination number is：12+32/48=44/60.
To sum up, in D2D group communications, if the scheduling for carrying out data transmission/reception independent to each user, can lead
Cause bigger signaling overheads.
Invention content
A kind of data transmission scheduling of offer of the embodiment of the present invention and data transmission method and equipment, for reducing system signaling
Expense.
A kind of data transmission scheduling method, this method include：
Network side generates the Downlink Control Information DCI for including instruction information field, which carries transmission terminal and exist
In the specified resource of terminal direct connection link D2D link transmission data and receive terminal the D2D link the money
The instruction information of data is received on source；
Network side use for dispatch the radio network temporary identifier RNTI of group communication or broadcast communication to the DCI into
Row scrambling,
Network side sends the scrambled DCI of RNTI.
A kind of data transmission method, this method include：
Terminal detection using for dispatch the radio network temporary identifier RNTI of group communication or broadcast communication it is scrambled under
Comprising instruction information field in row control information DCI, the DCI, which, which carries, sends terminal in terminal direct connection link D2D
Transmission data and reception terminal receive the finger of data in the resource of the D2D link in the specified resource of link
Show information；
The terminal determines itself to be to send terminal or reception according to the instruction information after detecting the DCI
Terminal, if sending terminal, then to terminal transmission data is received in the specified resource, if receiving terminal, then in institute
It states and receives data in specified resource.
A kind of base station, the base station include：
Generation unit, for generating the Downlink Control Information DCI for including instruction information field, which, which carries, sends
Terminal in the specified resource of terminal direct connection link D2D link transmission data and receive terminal the D2D link's
The instruction information of data is received in the resource；
Scrambling unit, for using the radio network temporary identifier RNTI for dispatching group communication or broadcast communication to institute
DCI is stated to be scrambled,
Transmission unit, for sending the scrambled DCI of the RNTI.
A kind of terminal, the terminal include：
Detection unit, for detecting using the radio network temporary identifier RNTI for dispatching group communication or broadcast communication
Comprising instruction information field in scrambled Downlink Control Information DCI, the DCI, it is straight in terminal which carries transmission terminal
Transmission data and reception terminal connect in the resource of the D2D link in the specified resource of logical link D2D link
Receive the instruction information of data；
Processing unit, for after detecting the DCI, determined according to the instruction information itself be send terminal or
Terminal is received, if sending terminal, then to terminal transmission data is received in the specified resource, if receiving terminal, then
Data are received in the specified resource.
In scheme provided in an embodiment of the present invention, network side generates the DCI for including instruction information field, which takes
With send terminal in the specified resource of D2D link transmission data and receive terminal D2D link specified resource
The upper instruction information for receiving data, scrambles the DCI of generation using the RNTI for dispatching group communication or broadcast communication,
And send the scrambled DCI of the RNTI；Terminal is after detecting using the scrambled DCI of the RNTI, according to the instruction information in the DCI
Determine itself to be to send terminal or receive terminal, if sending terminal, then to reception in the specified resource of D2D link
Terminal transmission data then receives data if receiving terminal in the specified resource of D2D link.As it can be seen that in the present solution, logical
It crosses a DCI while dispatching the transmission of the data in group communication or broadcast communication and data receiver, sent with data and data connect
Contracture is not scheduled using a DCI, and this programme effectively reduces the signaling overheads of system.
Description of the drawings
Fig. 1 is the data flow diagram that terminal communicates in cellular network in the prior art；
Fig. 2 is the data flow diagram of the direct-connected communication of terminal in the prior art；
Fig. 3 is that DCI in the prior art scrambles schematic diagram；
Fig. 4 is the schematic diagram of PDCCH search space in the prior art；
Fig. 5 is E-PDCCH resources schematic diagram in the prior art；
Fig. 6 is method flow schematic diagram provided in an embodiment of the present invention；
Fig. 7 is another method flow diagram provided in an embodiment of the present invention；
Fig. 8 is architecture of base station schematic diagram provided in an embodiment of the present invention；
Fig. 9 is terminal structure schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
In order to reduce the signaling overheads of system, the embodiment of the present invention provides a kind of data transmission scheduling method and a kind of data
Transmission method.
Referring to Fig. 6, the embodiment of the present invention provides a kind of data transmission scheduling method, includes the following steps：
Step 60：Network side generates Downlink Control Information（DCI）, instruction information field, the instruction information field are included in the DCI
It carries and sends terminal in terminal direct connection link（Device-to-device link, D2D link）Specified resource on send
Data and reception terminal receive the instruction information of data in the specified resource of D2D link；Here, D2D link refer to
Using the communication link between the terminal of D2D technologies.
Step 61：Network side uses the radio network temporary identifier for dispatching group communication or broadcast communication（RNTI）It is right
The DCI of generation is scrambled；RNTI for dispatching group communication can be D2D-GROUP-RNTI, be communicated for schedule broadcast
RNTI can be D2D-BRORDCAST-RNTI.D2D-GROUP-RNTI is the group identification information distributed for D2D group communications,
D2D-BRORDCAST-RNTI is the group identification information distributed for D2D broadcast communications.
Step 62：Network side sends the scrambled DCI of RNTI.Here, network side can pass through network and equipment room chain
Road（Network-to-device link, N2D link）Send the scrambled DCI of the RNTI.N2D link refer to using network side
Equipment（Such as base station）Communication link between the terminal of use D2D technologies.
Specifically, network side is determined according to making an appointment for terminal for dispatching group communication or broadcast communication
RNTI；Alternatively, the RNTI for dispatching group communication or broadcast communication is distributed by network side, and before network side generates DCI,
Network side is notified the RNTI for dispatching group communication or broadcast communication of distribution to terminal by high-level signaling.
For example, it may be network side is notified the RNTI for dispatching group communication of distribution to end by high-level signaling
End, network side are used for the RNTI that schedule broadcast communicates according to the determination of making an appointment with terminal.
Specifically, the instruction information carried in the instruction information field of the DCI generated may include sending the mark letter of terminal
Breath.Such as：Include in the instruction information field is the identification information of the transmission terminal in D2D group communications, if current instruction
The identification information of transmission terminal in information field is UE A, then indicate UEA need in the specified resource of D2D link to
Other UE transmission datas in D2D groups, other UE in D2D groups then need to receive in the specified resource of D2D link
The data that UE A are sent.
It is, of course, also possible to be the DCI generated instruction information field in the instruction information that carries include reception terminal mark
Information.Such as：Include in the instruction information field is the identification information of the reception terminal in D2D group communications, if currently referred to
Show that the identification information of the reception terminal in information field is UE A and UE B, then indicating that UE A and UE B are needed D2D link's
The data of other UE transmissions are received in specified resource, other UE in D2D groups then need the specified money in D2D link
To UE A and UE B transmission datas on source.
It is, of course, also possible to be the DCI generated instruction information field in the instruction information that carries include transmission terminal mark
Information and the identification information for receiving terminal.Such as：Include in the instruction information field is the transmission terminal in D2D group communications
Identification information and the identification information for receiving terminal, if currently the identification information of the transmission terminal in instruction information field is UE A,
The identification information for receiving terminal is UE B and UE C, then indicating that UE A need in the specified resource of D2D link to UE B
With UE C transmission datas, UEB and UE C need to receive the data that UE A are sent in the specified resource of D2D link.
Specifically, send terminal identification information can be send terminal using Layer assignment or network side distribute
's.Receive terminal identification information can be receive terminal using Layer assignment or network side distribute.
For example, in D2D group communications, network side is to send terminal in D2D groups and receive terminal to distinguish allocation identification
Information, identification information and the terminal in D2D group communications of distribution have one-to-one relationship.Network side is by each mark of distribution
Know information to notify to the corresponding UE in D2D groups.
In another example in D2D broadcast communications, network side is that each authorization terminal distinguishes allocation identification information, the mark of distribution
Information has one-to-one relationship with authorization terminal.Network side notifies each identification information of distribution to corresponding UE.
Specifically, the length of the instruction information field of the DCI generated can be supported according in group communication or broadcast communication
Maximum number of user determine regular length；Such as：The maximum number of user of one D2D community supporting is 250, it indicates that information field
Length can be fixed as 8 bits.Alternatively,
The length of the instruction information field of the DCI of generation is determined according to actual number of users in group communication or broadcast communication
Variable-length.Such as：Actual number of users is 236 in one D2D group, it indicates that the length of information field can be fixed as 8
Bit, actual number of users is 45 in a D2D group, it indicates that the length of information field can be fixed as 6 bits.
Specifically, network side sends the scrambled DCI of RNTI in step 62, following three kinds of sides may be used in specific implementation
Method：
First, network side is in long term evolution（LTE）The Physical Downlink Control Channel that system defines（PDCCH）Or the object of enhancing
Manage down control channel（E-PDCCH）Public search space in, send DCI；
This method can make total bit length of DCI with it is public defined in LTE system or LTE long evolving systems
The bit length of DCI in search space a kind of is identical, so as to not increase blind examination number, for indicating information field in DCI
Parsing, C-RNTI mark DCI and D2D-GROUP-RNTI mark DCI in have different meanings, so as to not increase
Add blind examination number.
The embodiment of this method：
The part that background technology description is seen for the definition of public search space, for the meaning for the information for including in DCI
Parsing believe comprising the instruction in the present invention in DCI if the DCI for sending terminal is scrambled using D2D-GROUP-RNTI
Domain is ceased, if it is D2D-GROUP-RNTI to receive the scrambling RNTI of DCI that terminal receives, according to including instruction in the present invention
The mode of information field is parsed, to determine to be on D2D link to be to receive data or transmission data.Due to different
RNTI can distinguish different DCI, then by existing DCI format certain bit information positions compression or again
Its meaning is defined, so as to not change the length of new DCI.
Second, network side in the public search space of the E-PDCCH of D2D communication definitions, sends DCI in advance；
The embodiment of this method：
A public E-PDCCH resource is configured for D2D groups, all terminals all blind examinations this E-PDCCH in D2D groups
E-PDCCH in resource, then need to define in this public search space is number and the support of E-PDCCH candidate channels
Polymerization grade, the channel resource equivalent to increase blind examination.
Third, network side are sent out for dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined
Send the DCI.
The embodiment of this method：
Similar to the definition of the search space exclusive UE of PDCCH, wherein D2D-GROUP-RNTI replaces C-RNTI, according to
It needs to define the polymerization grade of new blind examination and corresponding candidate channel number, here since UE needs while it is true to detect C-RNTI
Fixed UESS, while needing to detect the exclusive search spaces UE that D2D-GROUP-RNTI is determined, therefore increase the blind examination time of UE
Number.
Specifically, the bit of the bit length of the DCI generated and a kind of DCI defined in LTE system or LTE evolution systems
Length is identical.
Referring to Fig. 7, the embodiment of the present invention provides a kind of data transmission method, includes the following steps：
Step 70：Terminal detection uses in the RNTI scrambled DCI, the DCI for dispatching group communication or broadcast communication
Including instruction information field, the instruction information field carry send terminal in the specified resource of D2D link transmission data and
Receive the instruction information that terminal receives data in the specified resource of D2D link；
Step 71：Terminal after detecting the DCI, according to the instruction information in DCI determine itself for send terminal or
It is to receive terminal, if sending terminal, then to terminal transmission data is received in the specified resource of D2D link, if receiving
Terminal then receives data in the specified resource of D2D link.
Specifically, terminal is determined according to making an appointment for network side for dispatching group communication or broadcast communication
RNTI；Alternatively, for dispatching group communication or the RNTI of broadcast communication is distributed by network side, terminal before detecting the DCI,
Network side is received to be used to dispatch group communication or the RNTI of broadcast communication by what high-level signaling notified.
Specifically, it itself is the side for sending terminal or receiving terminal to be determined according to the instruction information in DCI in step 71
Method can be as follows：
If the instruction information in DCI only includes the identification information for sending terminal, the terminal for receiving DCI judges itself
Whether identification information is consistent with the identification information of transmission terminal in DCI, if so, determining itself to send terminal, otherwise, really
Fixed itself is reception terminal.If the instruction information in DCI only includes the identification information for receiving terminal, the terminal of DCI is received
Judge whether the identification information of itself is consistent with the identification information of reception terminal in DCI, if so, determining itself to receive eventually
End, otherwise, it determines itself is transmission terminal.If the instruction information in DCI includes the identification information for sending terminal and receiving terminal,
Then receive DCI terminal judge the identification information of itself be in DCI send the identification information of terminal it is consistent or in DCI
The identification information for receiving terminal is consistent, if consistent with the identification information of terminal is sent in DCI, it is determined that itself is whole to send
End, if consistent with the identification information of terminal is received in DCI, it is determined that itself be reception terminal.
Specifically, send terminal and/or receive terminal identification information be send terminal using Layer assignment or be net
The distribution of network side.
Specifically, the length of the instruction information field in DCI is to be used according to the maximum supported in group communication or broadcast communication
The regular length that amount determines；Or
The length of instruction information field in DCI be according to actual number of users in group communication or broadcast communication determine can
Become length.
Specifically, terminal detection uses the scrambled DCI of RNTI for dispatching group communication or broadcast communication in step 70,
Following three kinds of methods may be used in specific implementation：
First, in the public search space of PDCCH or E-PDCCH that terminal is defined in LTE system, detection use is for adjusting
Spend group communication or the scrambled DCI of RNTI of broadcast communication；
Second, terminal is in advance in the public search space of the E-PDCCH of D2D communication definitions, detection use is for adjusting
Spend group communication or the scrambled DCI of RNTI of broadcast communication；
Third, terminal are detected for dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined
Use the scrambled DCI of RNTI for dispatching group communication or broadcast communication.
Specifically, the total bit length for the DCI that terminal detects and one defined in LTE system or LTE evolution systems
The bit length of kind DCI is identical.
Embodiment one：
In D2D group communications, the exchange method of network side and end side is as follows：
Step 1：Base station generates the DCI for including instruction information field, and it is whole which carries the transmission in D2D groups
Hold the reception terminal in the specified resource of D2D link in transmission data and D2D groups in the specified of D2D link
The instruction information of data is received in resource；
Step 2：Base station uses and is scrambled to the DCI of generation for dispatching the RNTI of group communication；
Step 3：Base station sends the scrambled DCI of RNTI by N2D link；
Step 4：Terminal detection in D2D groups uses the scrambled DCI of RNTI for dispatching group communication；
Step 5：Terminal in D2D groups after detecting using the scrambled DCI of RNTI for dispatching group communication,
Determine itself to be to send terminal or receive terminal according to the instruction information in the DCI, if sending terminal, then in D2D link
Specified resource on to receive terminal transmission data, if receive terminal, then received in the specified resource of D2D link
Data.
Embodiment two：
In D2D broadcast communications, the exchange method of network side and end side is as follows：
Step 1：Base station generates the DCI for including instruction information field, which carries the hair in D2D broadcast communications
Reception terminal of the end in the specified resource of D2D link in transmission data and D2D broadcast communications make arrangements for his funeral in D2D link
Specified resource on receive data instruction information；
Step 2：Base station uses the RNTI for schedule broadcast communication to scramble the DCI of generation；
Step 3：Base station sends the scrambled DCI of RNTI by N2D link；
Step 4：Each authorization terminal detection uses the scrambled DCI of RNTI for schedule broadcast communication；
Step 5：Terminal is after detecting using the scrambled DCI of RNTI for schedule broadcast communication, according in the DCI
Instruction information determine itself be send terminal or receive terminal, if send terminal, then in the specified money of D2D link
Broadcast data is sent on source, if receiving terminal, then receives broadcast data in the specified resource of D2D link.
Referring to Fig. 8, the embodiment of the present invention provides a kind of base station, which includes：
Generation unit 80 includes instruction information field, the instruction information field for generating Downlink Control Information DCI in the DCI
Carry send terminal in the specified resource of terminal direct connection link D2D link transmission data and receive terminal described
The instruction information of data is received in the resource of D2D link；
Scrambling unit 81, for using RNTI pairs of the radio network temporary identifier for dispatching group communication or broadcast communication
The DCI is scrambled,
Transmission unit 82, for sending the scrambled DCI of the RNTI.
Further, the scrambling unit 81 is used for：The RNTI is determined according to making an appointment for terminal；Alternatively,
The transmission unit 82 is additionally operable to：Before generating DCI, the RNTI is notified to terminal by high-level signaling.
Further, the instruction information includes the identification information for sending terminal.
Further, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
Further, the length of the instruction information field is according to the maximum user supported in group communication or broadcast communication
The determining regular length of number；Or
The length of the instruction information field is that can be changed according to what actual number of users in group communication or broadcast communication determined
Length.
Further, the transmission unit 82 is used for：
The Physical Downlink Control Channel of the physical downlink control channel PDCCH or enhancing that are defined in long term evolution LTE system
In the public search space of E-PDCCH, the DCI is sent；Alternatively,
In the public search space of the advance E-PDCCH for being D2D communication definitions, the DCI is sent；Alternatively,
For dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined, the DCI is sent.
Further, the bit of the bit length of the DCI and a kind of DCI defined in LTE system or LTE evolution systems
Length is identical.
Referring to Fig. 9, the embodiment of the present invention provides a kind of terminal, which includes：
Detection unit 90, for detecting using the radio network temporary identifier for dispatching group communication or broadcast communication
Comprising instruction information field in RNTI scrambled Downlink Control Information DCI, the DCI, which, which carries, sends terminal at end
End lead directly to transmission data in the specified resource of link D2D link and receive terminal the D2D link the resource
The upper instruction information for receiving data；
Processing unit 91, for after detecting the DCI, itself is determined according to the instruction information for send terminal or
It is to receive terminal, if sending terminal, then to terminal transmission data is received in the specified resource, if receiving terminal,
Then data are received in the specified resource.
Further, the detection unit 90 is used for：The RNTI is determined according to making an appointment for network side；Alternatively,
The terminal further includes：Receiving unit 92 passes through high-level signaling for before detecting the DCI, receiving network side
The RNTI of notice.
Further, the instruction information includes the identification information for sending terminal.
Further, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
Further, the length of the instruction information field is according to the maximum user supported in group communication or broadcast communication
The determining regular length of number；Or
The length of the instruction information field is that can be changed according to what actual number of users in group communication or broadcast communication determined
Length.
Further, the detection unit 90 is used for：
The Physical Downlink Control Channel of the physical downlink control channel PDCCH or enhancing that are defined in long term evolution LTE system
In the public search space of E-PDCCH, detection uses the scrambled DCI of RNTI for dispatching group communication or broadcast communication；Or
Person,
In advance in the public search space of the E-PDCCH of D2D communication definitions, detection use is for dispatching group communication
Or the scrambled DCI of RNTI of broadcast communication；Alternatively,
For dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined, detect described in use
The scrambled DCI of RNTI.
Further, total bit length of the DCI is with a kind of DCI's defined in LTE system or LTE evolution systems
Bit length is identical.
To sum up, beneficial effects of the present invention include：
In scheme provided in an embodiment of the present invention, network side generates the DCI for including instruction information field, which takes
With send terminal in the specified resource of D2D link transmission data and receive terminal D2D link specified resource
The upper instruction information for receiving data, scrambles the DCI of generation using the RNTI for dispatching group communication or broadcast communication,
And send the scrambled DCI of the RNTI；Terminal is after detecting using the scrambled DCI of the RNTI, according to the instruction information in the DCI
Determine itself to be to send terminal or receive terminal, if sending terminal, then to reception in the specified resource of D2D link
Terminal transmission data then receives data if receiving terminal in the specified resource of D2D link.As it can be seen that in the present solution, logical
It crosses a DCI while dispatching the transmission of the data in group communication or broadcast communication and data receiver, sent with data and data connect
Contracture is not scheduled using a DCI, and this programme effectively reduces the signaling overheads of system.
The present invention be with reference to according to the method for the embodiment of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (24)
1. a kind of data transmission scheduling method, which is characterized in that this method includes：
Network side generates the Downlink Control Information DCI for including instruction information field, which, which carries, sends terminal in terminal
Transmission data and reception terminal are in the resource of the D2D link in the specified resource of straight-through link D2D link
The instruction information of data is received, the instruction information which carries includes sending identification information and/or the reception of terminal
The identification information of terminal；
Network side, which is used, adds the DCI for dispatching the radio network temporary identifier RNTI of group communication or broadcast communication
It disturbs；
Network side sends the scrambled DCI of RNTI.
2. the method as described in claim 1, which is characterized in that network side according to terminal make an appointment determine described in
RNTI；Alternatively,
Before network side generates DCI, network side is notified the RNTI to terminal by high-level signaling.
3. the method as described in claim 1, which is characterized in that if the instruction information includes the mark letter for sending terminal
Breath, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
4. the method as described in claim 1, which is characterized in that the length of the instruction information field is according to group communication or extensively
Broadcast the regular length that the maximum number of user supported in communication determines；Or
The length of the instruction information field is according to the variable-length that actual number of users determines in group communication or broadcast communication.
5. the method as described in claim 1, which is characterized in that network side sends the scrambled DCI of RNTI, specifically includes：
The physical down control letter for the physical downlink control channel PDCCH or enhancing that network side is defined in long term evolution LTE system
In the public search space of road E-PDCCH, the DCI is sent；Alternatively,
Network side in the public search space of the E-PDCCH of D2D communication definitions, sends the DCI in advance；Alternatively,
Network side sends the DCI for dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined.
6. the method as described in any in claim 1-5, which is characterized in that the bit length of the DCI and LTE system or
The bit length of DCI defined in LTE evolution systems a kind of is identical.
7. a kind of data transmission method, which is characterized in that this method includes：
Terminal detection uses the scrambled downlink controls of radio network temporary identifier RNTI for dispatching group communication or broadcast communication
Comprising instruction information field in information DCI processed, the DCI, which, which carries, sends terminal in terminal direct connection link D2D
Transmission data and reception terminal receive the finger of data in the resource of the D2D link in the specified resource of link
Show information, the instruction information which carries includes the mark letter for sending the identification information of terminal and/or receiving terminal
Breath；
The terminal determines itself to be to send terminal or receive terminal according to the instruction information after detecting the DCI,
If sending terminal, then to terminal transmission data is received in the specified resource, if receiving terminal, then described specified
Resource on receive data.
8. the method for claim 7, which is characterized in that terminal according to network side make an appointment determination described in
RNTI；Alternatively,
Terminal receives the RNTI that network side is notified by high-level signaling before detecting the DCI.
9. the method for claim 7, which is characterized in that if the instruction information includes the mark letter for sending terminal
Breath, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
10. the method for claim 7, which is characterized in that the length of the instruction information field be according to group communication or
The regular length that the maximum number of user supported in broadcast communication determines；Or
The length of the instruction information field is according to the variable-length that actual number of users determines in group communication or broadcast communication.
11. the method for claim 7, which is characterized in that terminal detection use is for dispatching group communication or extensively
The scrambled DCI of RNTI for broadcasting communication, specifically include：
The Physical Downlink Control Channel of physical downlink control channel PDCCH or enhancing that terminal is defined in long term evolution LTE system
In the public search space of E-PDCCH, detection uses the scrambled DCI of RNTI for dispatching group communication or broadcast communication；Or
Person,
Terminal is in advance in the public search space of the E-PDCCH of D2D communication definitions, detection use is for dispatching group communication
Or the scrambled DCI of RNTI of broadcast communication；Alternatively,
Terminal is detected for dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined described in use
The scrambled DCI of RNTI.
12. the method as described in any in claim 7-11, which is characterized in that total bit length of the DCI and LTE systems
The bit length of DCI defined in system or LTE evolution systems a kind of is identical.
13. a kind of base station, which is characterized in that the base station includes：
Generation unit carries hair in the DCI for generating Downlink Control Information DCI comprising instruction information field, the instruction information field
It makes arrangements for his funeral and holds the transmission data in the specified resource of terminal direct connection link D2D link and receive terminal in the D2D link
The resource on receive data instruction information, the instruction information field carry instruction information include send terminal mark believe
Breath and/or the identification information for receiving terminal；
Scrambling unit, for using the radio network temporary identifier RNTI for dispatching group communication or broadcast communication to described
DCI is scrambled；
Transmission unit, for sending the scrambled DCI of the RNTI.
14. base station as claimed in claim 13, which is characterized in that the scrambling unit is used for：It is appointed according to the pre- of terminal
Surely the RNTI is determined；Alternatively,
The transmission unit is additionally operable to：Before generating DCI, the RNTI is notified to terminal by high-level signaling.
15. base station as claimed in claim 13, which is characterized in that if the instruction information includes the mark for sending terminal
Information, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
16. base station as claimed in claim 13, which is characterized in that the length of the instruction information field be according to group communication or
The regular length that the maximum number of user supported in broadcast communication determines；Or
The length of the instruction information field is according to the variable-length that actual number of users determines in group communication or broadcast communication.
17. base station as claimed in claim 13, which is characterized in that the transmission unit is used for：
The Physical Downlink Control Channel E- of the physical downlink control channel PDCCH or enhancing that are defined in long term evolution LTE system
In the public search space of PDCCH, the DCI is sent；Alternatively,
In the public search space of the advance E-PDCCH for being D2D communication definitions, the DCI is sent；Alternatively,
For dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined, the DCI is sent.
18. the base station as described in any in claim 13-17, which is characterized in that the bit length and LTE system of the DCI
Or the bit length of DCI defined in LTE evolution systems a kind of is identical.
19. a kind of terminal, which is characterized in that the terminal includes：
Detection unit is scrambled for detecting using the radio network temporary identifier RNTI for dispatching group communication or broadcast communication
Downlink Control Information DCI, comprising instruction information field in the DCI, which, which carries, sends terminal in terminal direct connection chain
Transmission data and reception terminal receive number in the resource of the D2D link in the specified resource of road D2D link
According to instruction information, the instruction information field carry instruction information include send terminal identification information and/or reception terminal
Identification information；
Processing unit itself is to send terminal or reception for after detecting the DCI, being determined according to the instruction information
Terminal, if sending terminal, then to terminal transmission data is received in the specified resource, if receiving terminal, then in institute
It states and receives data in specified resource.
20. terminal as claimed in claim 19, which is characterized in that the detection unit is used for：According to advance with network side
Agreement determines the RNTI；Alternatively,
The terminal further includes：Receiving unit, for before detecting the DCI, receiving what network side was notified by high-level signaling
The RNTI.
21. terminal as claimed in claim 19, which is characterized in that if the instruction information includes the mark for sending terminal
Information, the identification information be it is described send terminal using Layer assignment or be what network side distributed.
22. terminal as claimed in claim 19, which is characterized in that the length of the instruction information field be according to group communication or
The regular length that the maximum number of user supported in broadcast communication determines；Or
The length of the instruction information field is according to the variable-length that actual number of users determines in group communication or broadcast communication.
23. terminal as claimed in claim 19, which is characterized in that the detection unit is used for：
The Physical Downlink Control Channel E- of the physical downlink control channel PDCCH or enhancing that are defined in long term evolution LTE system
In the public search space of PDCCH, detection uses the scrambled DCI of RNTI for dispatching group communication or broadcast communication；Alternatively,
In advance for D2D communication definitions E-PDCCH public search space in, detection use for dispatch group communication or extensively
Broadcast the scrambled DCI of RNTI of communication；Alternatively,
For dispatching in the exclusive search space that the RNTI of group communication or broadcast communication is determined, detection is added using the RNTI
The DCI disturbed.
24. the terminal as described in any in claim 19-23, which is characterized in that total bit length and LTE of the DCI
The bit length of DCI defined in system or LTE evolution systems a kind of is identical.
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| CN104837120B (en) * | 2015-04-02 | 2018-10-19 | 四川大学 | The distribution method and dispatcher or core net of a kind of cluster RNTI |
| CN106470449B (en) * | 2015-08-14 | 2020-04-10 | 电信科学技术研究院 | Data receiving and transmitting, relaying method, device and communication system |
| WO2017070901A1 (en) | 2015-10-29 | 2017-05-04 | 华为技术有限公司 | Data transmission method, device and system |
| CN108282872B (en) * | 2017-01-06 | 2023-06-06 | 中兴通讯股份有限公司 | Downlink control resource position indication method, determining method and related equipment |
| CN108668239B (en) * | 2017-03-28 | 2021-08-24 | 无锡壹人一灯科技发展有限公司 | Wireless communication system with low power consumption and supporting one-to-many interaction and communication method thereof |
| CN109729594B (en) * | 2017-10-27 | 2021-03-23 | 华为技术有限公司 | Control information processing method and system, first device and second device |
| CN109788563B (en) * | 2017-11-15 | 2021-09-10 | 维沃移动通信有限公司 | BWP indication method, acquisition method, network side equipment and user terminal |
| WO2019100931A1 (en) * | 2017-11-24 | 2019-05-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for data scrambling/descrambling |
| WO2020118720A1 (en) * | 2018-12-14 | 2020-06-18 | 华为技术有限公司 | Data transmission method and device |
| CN111417201B (en) * | 2019-01-07 | 2023-05-12 | 中国移动通信有限公司研究院 | Method for sending and receiving interrupt transmission instruction, network equipment and terminal |
| CN111586845B (en) * | 2019-02-15 | 2023-02-24 | 大唐移动通信设备有限公司 | Transmission method and indication method of data channel, terminal and network side equipment |
| CN111726884B (en) * | 2019-03-20 | 2022-06-07 | 中国移动通信有限公司研究院 | Indication method and device |
| CN111836390B (en) * | 2019-07-19 | 2022-03-08 | 维沃移动通信有限公司 | Data transmission method, terminal and control node |
| CN111373826B (en) * | 2020-02-19 | 2023-11-07 | 北京小米移动软件有限公司 | Information processing method, device, base station, terminal and storage medium |
| CN113365350B (en) * | 2020-03-06 | 2023-09-22 | 中国移动通信有限公司研究院 | Information indication method, device, equipment and storage medium |
| CN115868233B (en) * | 2021-07-09 | 2024-01-23 | 北京小米移动软件有限公司 | Group scheduling instruction processing method and device, communication equipment and storage medium |
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