CN104602179B - A kind of method and user equipment of the transmission of D2D data - Google Patents
A kind of method and user equipment of the transmission of D2D data Download PDFInfo
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- CN104602179B CN104602179B CN201310533170.1A CN201310533170A CN104602179B CN 104602179 B CN104602179 B CN 104602179B CN 201310533170 A CN201310533170 A CN 201310533170A CN 104602179 B CN104602179 B CN 104602179B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
- H04L5/0046—Determination of how many bits are transmitted on different sub-channels
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- Mobile Radio Communication Systems (AREA)
Abstract
A kind of method and user equipment sent the invention discloses D2D data, method includes: that UE sends competition flag information and/or control information in D2D control channel, and carrying sends D2D communication service data on the corresponding data channel of the control channel, wherein, the control channel and data channel are one-to-one relationship, and the resource that the control channel and data channel are included is fixed.User equipment includes: the first transmission unit, for sending competition flag information and/or control information in D2D control channel；Second transmission unit, for the carrying transmission D2D communication service data on the corresponding data channel of the control channel；Wherein, the control channel and data channel are one-to-one relationship, and the resource that the control channel and data channel are included is fixed.
Description
Technical field
A kind of method and user equipment sent the present invention relates to mobile communication field more particularly to D2D data.Background skill
Art
In the cellular system, when thering is business to need to transmit between two user equipmenies (UE), the business number of UE1 to UE2
According to, the base station 1 where UE1 can be transferred to by air interface (referred to as eating dishes without rice or wine) first,
Base station 1 passes through core net for the business data transmission to the base station 2 where UE2, and base station 2 is again by the business datum
By air interface transmission to UE2；The business data transmission of UE2 to UE1 uses similar process flow.When UE1 and UE2 is positioned at same
When a cellular cell, although data transmission still can disappear as shown in Figure 1, base station 1 and base station 2 are the same websites
Consume two parts of radio spectrum resources.
It can be seen that if UE1 and UE2 is located at same cell and at a distance of relatively close, above-mentioned cellular communication method
Apparently not optimal communication mode.And in fact, with mobile communication business diversification, for example, social networks, electronics branch
Pay it is equal in a wireless communication system using more and more extensive so that the business transmission demand between short distance user increasingly increases
It is long.Therefore, the communication pattern of device-to-device (D2D, Device to Device) is increasingly subject to extensive concern.So-called D2D is logical
Letter directly passes through air interface transmission to mesh by source user equipment as shown in Fig. 2, referring to that business datum is forwarded without base station
User equipment is marked, this communication pattern has the feature for being clearly distinguishable from conventional cellular systems communication pattern.It is logical for short distance
For the user of letter, D2D transmission not only saves radio spectrum resources, and reduces the data transmission pressure of core net.Base
It is a kind of under the control of system in the D2D communication of Cellular Networks, is directly carried out between multiple terminal devices for supporting D2D function
The new technique of communication, it can reduce system resource occupancy, increase frequency spectrum efficiency of cellular communication system, reduce terminal transmission function
Consumption, and largely save network operation cost.
In the cordless communication network for being introduced into D2D function, each UE all can serve as information source transmitting terminal, it is peripherad other
UE sends D2D communication data, including unicast messages, multicast message, broadcast message etc..In traditional cellular communications networks, use
It is configured in the physical resource for carrying various message by base station United Dispatching, need to apply for resource to base station when UE needs to send data,
And the carrying transmitting of configured resource progress message is used under the scheduling instruction of base station.And D2D UE carries out D2D and communicates institute
The radio resource needed is system uplink resource, including system uplink frequency range or system uplink subframe, money used in D2D UE
Source can be similar to the processing in Cellular Networks, still controlled and dispatched by base station, it is also not necessary to the centralized dispatching management of base station,
In certain scope of resource, resource is obtained by way of competition by D2D UE, carries out D2D communication.Due in legacy cellular
All radio resources are controlled by base station United Dispatching in communication network, and UE does not have the function and permission that competition uses resource, because
This provides the method that corresponding resource contention obtains currently without for UE, this is also current urgent problem to be solved.
Summary of the invention
In view of this, the main purpose of the present invention is to provide the methods and user equipment of a kind of transmission of D2D data, so that
Realize that the UE of D2D communication obtains resource by competition in available resource less.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of method that D2D data are sent, this method comprises:
User equipment (UE) sends competition flag information and/or control information in D2D control channel, and believes in the control
Carrying sends D2D communication service data on the corresponding data channel in road, wherein the control channel and data channel are a pair of for one
It should be related to, and the resource that the control channel and data channel are included is fixed.
In above scheme, the resource that the control channel and data channel are included is system uplink resource or dedicated frequency range
Resource.
It is described that competition flag information and/or control information are sent in D2D control channel in above scheme, comprising:
By monitoring all or part of control channel, an idle control channel is wherein being selected, and in next money
The competition flag information and/or control information are sent on the period of source in selected control channel.
It is described by monitoring all or part of control channel in above scheme, wherein selecting an idle control letter
Road, comprising:
It is randomly choosed in idle control channel；Or
According to control channel grouping, the attribute and/or priority of business datum demand to be sent, the UE, in the free time
Control channel in selected.
In above scheme, when sending competition flag information in D2D control channel, the competition flag information is for indicating
The control channel and its corresponding data channel are used, i.e., on next available resource period, the competition mark
Control channel and corresponding data channel where information are busy resource.
It include resource period count value, the resource period count value table in the competition flag information in above scheme
Show that the UE has used the accumulative resource period number of the control channel and respective data channels；Alternatively, the resource period
Count value indicates that the UE is allowed to use the surplus resources periodicity of the control channel and respective data channels.
In above scheme, when sending control information in D2D control channel, the control information is to the control channel
The control instructions that corresponding the carried D2D communication service data of data channel carries out, the control information includes following information
At least one:
Modulation coding scheme MCS used in the data channel；
The mark ID of the UE of business datum to be sent；
The attribute information of the business datum carried on the data channel；
The ID of the intended recipient UE of the business datum carried on the data channel；
The coding redundancy version of the business datum carried on the data channel；
The counting that the business datum carried on the data channel retransmits.
In above scheme, the resource that the resource period includes by the control channel and/or data channel is in time domain
Upper duplicate minimum interval.
In above scheme, this method further include: according to the one-to-one relationship of the control channel and data channel, and lead to
Cross the resource that control channel obtains corresponding with control channel data channel, the one-to-one relationship include it is following at least
One: channel resource corresponding relationship, channel id index relative.
In above scheme, the resource that the control channel and data channel are included is fixed, comprising:
The quantity for the Physical Resource Block PRB that each control channel is included and position are fixed and known, and by system
It is default；
The quantity for the PRB that each data channel is included and position be it is fixed and known, by corresponding control channel and
The one-to-one relationship determines.
In above scheme, the control channel is Physical Uplink Control Channel (PUCCH), and the UE is according to PUCCH format
Processing carries the competition flag information and/or control information, by the competition flag information and/or control information with PUCCH
Any one format in format1/1a/1b/2/2a/2b/3 carries out processing carrying, and is mapped in selected control channel
It is sent.
In above scheme, the data channel is Physical Uplink Shared Channel (PUSCH), and the UE believes according to the control
Control information in road handles D2D communication service data, and is mapped on corresponding data channel and is sent.
A kind of user equipment, comprising:
First transmission unit, for sending competition flag information and/or control information in D2D control channel；
Second transmission unit, for the carrying transmission D2D communication service number on the corresponding data channel of the control channel
According to；
Wherein, the control channel and data channel are one-to-one relationship, and the control channel and data channel institute
The resource for including is fixed.
In above scheme, first transmission unit is further used for, by monitoring all or part of control channel, at it
One idle control channel of middle selection, and the competition mark is sent in selected control channel on next resource period
Will information and/or control information.
In above scheme, second transmission unit is further used for, according to the one of the control channel and data channel
One corresponding relationship, and pass through the resource of control channel acquisition data channel corresponding with the control channel, the one-to-one correspondence
Relationship includes at least one of the following: channel resource corresponding relationship, channel id index relative.
The method and user equipment that a kind of D2D data provided by the present invention are sent, so that the UE of D2D communication is available
Resource is obtained by competition in resource, D2D communication data of the resource for UE is sent, and UE is made to can be carried out effectively resource
Available resources are competed and obtained, the collision rate of resource contention is reduced, reaches and efficiently utilizes the work of resource, raising network flexibility
With.
Detailed description of the invention
Fig. 1 is the schematic diagram of conventional cellular network data communication mode；
Fig. 2 is the schematic diagram of D2D communication mode；
Fig. 3 is the method flow diagram that a kind of D2D data of the embodiment of the present invention are sent；
Fig. 4 is a kind of correspondence diagram of Control Channel and Data Channel in the embodiment of the present invention；
Another corresponding relationship that Fig. 5 is Control Channel and Data Channel in the embodiment of the present invention is illustrated
Figure；
Another corresponding relationship that Fig. 6 is Control Channel and Data Channel in the embodiment of the present invention is illustrated
Figure；
Also a kind of corresponding relationship that Fig. 7 is Control Channel and Data Channel in the embodiment of the present invention is illustrated
Figure；
Fig. 8 is the UE competitive resource of the embodiment of the present invention and the flow chart for emitting signal；
Fig. 9 is the schematic diagram that a kind of resource period of the embodiment of the present invention is arranged；
Figure 10 is the schematic diagram that another resource period of the embodiment of the present invention is arranged；
Figure 11 is the embodiment of the present invention using PUCCH channel architecture as the schematic diagram of Control Channel；
Figure 12 is that schematic diagram is arranged in the system of one embodiment of the invention；
Figure 13 is a kind of structural schematic diagram of user equipment of the embodiment of the present invention.
Specific embodiment
The technical solution of the present invention is further elaborated in the following with reference to the drawings and specific embodiments.
The method that a kind of D2D data provided in an embodiment of the present invention are sent, as shown in figure 3, specifically including that
Step 301, UE sends competition flag information and/or control information in D2D control channel；
Step 302, the UE is carried on the corresponding data channel of the control channel sends D2D communication service data.
Wherein, the control channel and data channel are one-to-one relationship, and the control channel and data channel institute
The resource for including is fixed；The resource that the control channel and data channel are included can be system uplink resource or dedicated frequency range
Resource.
Wherein, described that competition flag information and/or control information are sent in D2D control channel, comprising: complete by monitoring
Portion or fractional control channel are wherein selecting an idle control channel, and in selected control on next resource period
The competition flag information and/or control information are sent on channel processed.
Wherein, described by monitoring all or part of control channel, wherein selecting an idle control channel, packet
It includes:
It is randomly choosed in idle control channel；Or
According to control channel grouping, the attribute and/or priority of business datum demand to be sent, the UE, in the free time
Control channel in selected.
When sending competition flag information in D2D control channel, the competition flag information is for indicating the control letter
Road and its corresponding data channel are used, i.e., on next available resource period, where the competition flag information
Control channel and corresponding data channel are busy resource；
It may include resource period count value in the competition flag information, the resource period count value indicates the UE
The accumulative resource period number of the control channel and respective data channels is used；Alternatively, the resource period count value table
Show that the UE is allowed to use the surplus resources periodicity of the control channel and respective data channels.
Wherein, when sending control information in D2D control channel, the control information is corresponding to the control channel
The control instructions that the carried D2D communication service data of data channel carries out, the control information include following information at least it
One:
Modulation coding scheme MCS used in the data channel；
The mark ID of the UE of business datum to be sent；
The attribute information of the business datum carried on the data channel；
The ID of the intended recipient UE of the business datum carried on the data channel；
The coding redundancy version of the business datum carried on the data channel；
The counting that the business datum carried on the data channel retransmits.
Wherein, the control channel can be PUCCH, and the UE is handled according to PUCCH format carries the competition mark
Information and/or control information, by the competition flag information and/or control information with PUCCH format1/1a/1b/2/2a/
Any one format in 2b/3 carries out processing carrying, and is mapped in selected control channel and is sent；
The data channel can be PUSCH, and the UE is according to the control information in the control channel to D2D communication industry
Business data are handled, and are mapped on corresponding data channel and are sent.
The following detailed description of in the embodiment of the present invention, when there is no base station or other centralized control nodes to carry out in D2D communication
When unified scheduling of resource, D2D UE needs carry out resource acquisition in a manner of competing, when compete successfully using competing acquisition
Resource carry out data carrying send, when compete failure when, then renew competition process.
In order to reach effective resource contention, the embodiment of the present invention proposes a kind of D2D UE and passes through control channel
(Control Channel) reaches competitive resource and indicates to send out in data channel (Data Channel) resource that competition obtains
The method for penetrating the related control information of business datum.Here the physics money that Control Channel and DataControl are included
Source is the upper line frequency in system uplink resource, including frequency division duplex (FDD, FrequencyDivision Duplexing) system
Sub-frame of uplink in section or time division duplex (TDD, Time DivisionDuplexing) system；Alternatively, Control
The physical resource that Channel and Data Control is included is short-range communication or the dedicated frequency range that D2D is communicated.
In order to realize orderly competition and signal transmitting, each Control Channel and Data Channel are included
Resource be Physical Resource Block (PRB, Physical Resource fixed, i.e., that each Control Channel is included
It Block is) known to fixation, D2D UE all in this way can accurately monitor all Control Channel, can also basis
Configuration or the information known monitor part Control Channel, and know the free time for not carrying signal by monitoring
Control Channel.Each DataChannel corresponds to unique Control Channel, when UE competition uses some
When Control Channel, i.e., accordingly obtain the resource of this one-to-one Data Channel, each Data Channel institute
The PRB for including is also that can be obtained by corresponding Control Channel index known to fixation.
For example, Control Channel can be corresponding by channel resource with the one-to-one relationship of Data Channel
Relationship determines that channel resource relationship refers to the fixed relationship for the physical resource position that specific each channel is included here, each
Control Channel includes fixed PRB, according to the position of Control Channel,
According to predefined one-to-one relationship, the position PRB that corresponding Data Channel is included, such as Fig. 4 are determined
Shown in, corresponding Data Channel resource can be obtained according to each Control Channel.
Alternatively, Control Channel and Data Channel can be determined one by one according to channel number or channel id index
Corresponding relationship, as shown in figure 5, Control Channel#n corresponds to Data Channel#n, then UE uses Control
When Channel#n, corresponding Data Channel#n is the data channel resource of UE thus.
Further, this logical channel number can be changed with certain regular periodicity, formed flexible resource and reflected
Relationship is penetrated, as shown in fig. 6, on each resource period, the resource of the corresponding Data Channel#n of Control Channel#n
Realized with certain rule variation, Control Channel and Data Channel with logical channel number unique solid in position
Determine one-to-one relationship.It is corresponded alternatively, Control Channel and DataChannel can be determined according to channel resource
Relationship.
Alternatively, Control Channel resource is other than including the physical resource PRB where channel, it further include channel
The corresponding code or sequence resources used, for example, pilot frequency sequence, scrambling code, channel resource orthogonal code etc., make multiple Control
Channel is multiplexed identical physical resource PRB, further identifies specific Control Channel by code or sequence resources,
And unique Data Channel is further indexed, as shown in fig. 7, being abbreviated as CCH#1 in Control Channel#1(figure) with
CCH#2, CCH#3 include identical physical resource, and further, CCH#1, CCH#2, CCH#3 are respectively by orthogonal sequence resources
Multiplexing on identical physical resource, so as to make receive UE by different sequence resources distinguish corresponding CCH#1,
CCH#2, CCH#3, and then index and obtain corresponding Data Channel resource.
D2D UE competitive resource simultaneously carries out the process of data transmission as shown in figure 8, the D2D for having D2D business datum to be sent
UE monitors all or part Control Channel(step 801-802), one is selected in idle Control Channel
It is a, then while obtaining Control Channel resource, also obtain Data Channel resource corresponding with this channel
(step 803).UE carrying competition flag information and/or control letter on Control Channel on next resource period
It ceases and sends, bearer service Data Concurrent send (step 804- on the corresponding Data Channel of this Control Channel
805).When the not sent completion of the D2D business datum of UE, UE can continue to use current Control Channel and Data
Channel continues carrying competition flag information and/or control letter on Control Channel on next resource period
It ceases and sends, bearer service Data Concurrent is sent on Data Channel；When the data of UE are sent completely, then UE is not used
This Control Channel and Data Channel, that is, discharge this resource, so that this Control Channel reverts to the free time
Resource competes again for UE and uses (step 806).
The resource that resource period described here refers to that Control Channel and/or Data Channel are included exists
Duplicate minimum interval in time domain, as unit of subframe, resource period is k subframe, i.e. k milliseconds (ms), k is positive integer.Due to
, can be according to time-multiplexed model split resource according to different function and demand in D2D communication, then Control
Subframe where Channel and Data Channel includes all or part of subframe in D2D available frequency band.Further, root
According to different system configurations, minimum 1 subframe of resource period, value is any number of sub frames more than or equal to 1.By taking Fig. 9 as an example,
Control Channel is identical as the resource period of DataChannel, is 8ms；Or by taking Figure 10 as an example, resource period is
10ms。
All or part Control Channel is monitored when UE passes through, knows Control idle in the Current resource period
When Channel information, UE can the selection one and next in the available free Control Channel of institute according to certain principle
This Control Channel transmitting competition flag information and/or control information are used on resource period.Here a free time is selected
The mode of Control Channel includes:
Random selection, i.e. UE randomly choose any one Control in all idle Control Channel
Channel is used；
Alternatively, UE is selected according to the grouping of Control Channel, Control Channel itself is divided at this time
For different attribute or priority packet, stock number that the Control Channel in every group is included or its correspond to Data
The stock number that Channel is included is different or every group of Control Channel and its corresponding Data Channel can be held
The business datum attribute of load or priority difference etc., UE can select a Control according to self-demand in applicable grouping
Channel is used；
Alternatively, Control Channel UE applicable according to D2D business datum demand selection to be sent, data here
Demand includes type of service (such as VoIP, video, file etc.), service priority requirement (priority level as corresponding to data)
Deng；
Alternatively, UE selects corresponding Control Channel according to the selection of itself attribute and/or priority, as UE is
Common D2D UE or high-level D2D UE etc., can accordingly select different Control Channel.
UE sends competition flag information and/or control information on selected Control Channel, wherein competition
Flag information is for indicating that this Control Channel has been used, then other UE for monitoring Control Channel are received
Signal on this Control Channel, and detect this competition flag information after, know this Control Channel resource
It has been used, is not idle channel resources, cannot compete using this channel resource and its corresponding Data Channel resource.
Further, it is positive integer greater than 1 that competition flag information, which may include 1bit or n bit(n) information, work as competition
When flag information only includes 1bit information, i.e., this competition flag information is a competition flag bit, such as: when the 1bit value of information is 1
When, it indicates that this Control Channel resource is used, when the value of information is 0, indicates that this Control Channel resource is idle.
Preferably, when Control Channel only carries competition flag information, when not including control information, competition flag information, that is, body
Now whether to emit signal on corresponding Control Channel, this Control Channel is used when UE needs to mark
When, signal transmitting is carried out on this channel resource, that is, is indicated that competition flag bit is 1, do not used when UE discharges this channel resource
When, then do not emit signal on this channel resource, this channel is idle state, and being equivalent to competition flag bit is 0.Preferably,
It at this time can be using PUCCH format1 as Contor Channel sending method.
When competing flag information includes n bit information, n bit information can indicate that UE provides this ControlChannel
The use count value in source, is presented as the counting to resource period, this count value may include following two usage mode:
Mode one, n bit information indicate the resource period accumulative total that UE has used this Control Channel
Value, i.e. expression UE have used this Control Channel, and time of signal transmitting is carried out on corresponding Data Channel
Number；
Mode two, n bit information indicate that UE can or need to continue to use this Control Channel and Data
The surplus resources cycle count of Channel, i.e. expression UE will continue to use this channel resource, and enterprising in its Data Channel
The number of row signal transmitting.
In mode one, UE competition is obtained and is provided using certain Control Channel and its corresponding Data Channel
When source, on each resource period on Control Channel and Data Channel carry out signal transmitting, then with UE into
Each resource period of row signal transmitting competes the counting of resource period represented by the n bit of flag information plus one；In mode two
In, UE on each resource period on Control Channel and Data Channel carry out signal transmitting, then with UE into
Each resource period of row signal transmitting competes the counting of resource period represented by the n bit of flag information and subtracts one.
In addition, UE sends competition flag information and/or control information on selected Control Channel, wherein
Control relevant control of the information for bearer service data information on Data Channel corresponding to this Control Channel
Information is indicated, may include one or more in following control information:
Modulation coding scheme (MCS, Modulation the and Coding of Data Channel bearer service data
Scheme it) indicates, i.e. data processing is carried on Data Channel used MCS grade, value 0-15 by UE；
Redundancy versions (RV) information that data are encoded, after indicating entrained coding in the signal emitted
The instruction of redundancy bit correlation, value 0-3；
UE id information, i.e., can using the id information, such as UE-RNTI of UE etc. that this channel resource carries out signal transmitting
The identification information of this UE identity of unique designation；
The attribute information for the business datum that UE is sent, such as type of service (broadcast, multicast, unicast), service priority, industry
The related instruction information about business datum such as group belonging to being engaged in；
The intended recipient UE ID for the business datum that UE is carried on Data Channel, i.e. this business datum permission are connect
The id information of one or more UE of receipts, specific id information can be RNTI, D2D ID of UE etc. can unique designation UE body
Part identification information or intended recipient user group ID, i.e. Group ID；
The counting that this business datum retransmits indicates current Data when UE retransmits transmitted data on demand
The signal that Channel the is emitted initial transmission of data or re-transmission thus, by count indicate, such as retransmit count value be 0 when,
It is expressed as first transmission, correspondingly, being expressed as kth time when count value is k and retransmitting.
UE in Control Channel by carrying control information, to the business datum in corresponding Data Channel
Carrying carries out control instructions, is conducive to other UE and more effectively receives data in this Data Channel.
By available Control Channel resource quantity and each Control in the predefined D2D communication of system
Specific resource contained by Channel.Each Control Channel includes a certain number of PRB, multiple Control
Between Channel resource multiplex further can also be carried out in a manner of code point (different sequences) etc..For example, Control
LTE PUCCH channel architecture can be used in Channel, as shown in figure 11, corresponds to a pair of PRB in each subframe, exists respectively
It respectively include a PRB on slot#0 and slot#1, for carrying competition flag information and/or control information.Further, according to
System define or Control Channel in required carrying information content, PUCCH format1/1a/1b/ can be used in UE
Any one format in 2/2a/2b/3 is handled and is carried on corresponding to competition flag information and/or control information
On Control Channel channel resource, and sent.
By available Data Channel resource quantity and each Data Channel in the predefined D2D communication of system
Contained specific resource.Each Data Channel includes a certain number of PRB, for example, LTE can be used in Data Channel
PUSCH channel architecture handles carrying D2D business datum on predefined one or more PRB in a manner of PUSCH channel,
And it is sent.Here D2D business datum includes number of broadcast message evidence, multicast message data, unicast messages data.
Some embodiments are set forth below to be further elaborated on.
Embodiment one
It is predefined according to system, using PUCCH channel as Control Channel, using PUSCH channel as Data
20 Control Channel and corresponding 20 Data Channel are arranged in Channel altogether.In each radio frames, setting
5 subframes communicate data available subframe as D2D, and resource period is 2ms.
As shown in figure 12, UE monitors all or part Control Channel on the subframe#0 of Frame#n, obtains
The Control Channel of cicada current idle and wherein random selection Channel#5 progress resource contention, in next money
On the period of source, is i.e. on subframe#2, emits 1bit on Control Channel#5 and compete flag information, indicate that competition makes
With this channel resource, and bearer service data are emitted on corresponding Data Channel #5.In subframe #2
On, this resource is used without other UE selection competition, then UE is competed successfully.When the business datum of UE is subframe #2's
On Data Channel#5 when not sent completion, it will continue on next resource period, i.e. subframe#4, continue to use
Control Channel #5 transmitting competition flag information, marks this channel to be used, and continue on Data Channel#5
Carrying emits remaining business datum, and so on, until all business datums are sent completely by UE.
Embodiment two
It is predefined according to system, using PUCCH channel as Control Channel, using PUSCH channel as Data
20 Control Channel and corresponding 20 Data Channel are arranged in Channel altogether.In each radio frames, setting
5 subframes communicate data available subframe as D2D, and resource period is 2ms.UE A is supervised on the subframe#0 of Frame#n
All or part of Control Channel is listened, known the Control Channel of current idle and is randomly choosed wherein
Channel#5 carries out resource contention, on next resource period, i.e. on subframe#2, on Control Channel#5
Emit 1bit and compete flag information, indicates that competition uses this channel resource, and carry industry on corresponding Data Channel#5
Business data are sent, while UE B is also listened to and selected the Control Channel#5 of current idle, and next
Competition uses this resource on resource period.Then on subframe #2, UE A and UE B are competed used Control simultaneously
There is resource contention conflict at this time in Channel#5 and its corresponding Data Channel #5, and UE A and UE B are in Data
The data that Channel #5 is emitted possibly can not effectively be received by other UE.In this case, UE A and UE B can be respective
Re-start resource contention.
Embodiment three
System is predefined, and using PUCCH channel as Control Channel, UE needs are held in Control Channel
The MCS for carrying 1bit competition flag information and 5bit controls information, and UE handles above-mentioned total 6bit using PUCCH format3
Information, and carry to be mapped on selected Control Channel and be sent.
Example IV
System is predefined, using PUCCH channel as Control Channel, UE Control Channel with whether
Emit signal to indicate competition flag information, does not include control information.Then UE uses PUCCH format1, will compete flag bit
Effective information " 1 " is handled according to PUCCH format1 mode, is mapped on selected Control Channel and is carried out
It sends.
The method that corresponding above-mentioned D2D data are sent, the embodiment of the invention also provides a kind of UE, as shown in figure 13, comprising:
First transmission unit 10, for sending competition flag information and/or control information in D2D control channel；
Second transmission unit 20, for the carrying transmission D2D communication service on the corresponding data channel of the control channel
Data；
Wherein, the control channel and data channel are one-to-one relationship, and the control channel and data channel institute
The resource for including is fixed.
Wherein, the resource that the control channel and data channel are included is system uplink resource or the dedicated resource of frequency range.
Wherein, first transmission unit 10 is further used for, and by monitoring all or part of control channel, selects wherein
An idle control channel is selected, and sends the competition mark letter in selected control channel on next resource period
Breath and/or control information.
Wherein, described by monitoring all or part of control channel, wherein selecting an idle control channel, packet
It includes:
It is randomly choosed in idle control channel；Or
According to control channel grouping, the attribute and/or priority of business datum demand to be sent, the UE, in the free time
Control channel in selected.
Wherein, when sending competition flag information in D2D control channel, the competition flag information is for indicating the control
Channel processed and its corresponding data channel are used, i.e., on next available resource period, competition flag information institute
Control channel and corresponding data channel be busy resource；
It include resource period count value in the competition flag information, the resource period count value has indicated the UE
Use the accumulative resource period number of the control channel and respective data channels；Alternatively, the resource period count value indicates institute
State the surplus resources periodicity that UE is allowed to use the control channel and respective data channels.
Wherein, when sending control information in D2D control channel, the control information is corresponding to the control channel
The control instructions that the carried D2D communication service data of data channel carries out, the control information include following information at least it
One:
MCS used in the data channel；
The ID of the UE of business datum to be sent；
The attribute information of the business datum carried on the data channel；
The ID of the intended recipient UE of the business datum carried on the data channel；
The coding redundancy version of the business datum carried on the data channel；
The counting that the business datum carried on the data channel retransmits.
Wherein, the resource that the resource period includes by the control channel and/or data channel repeats in the time domain
Minimum interval.
Wherein, second transmission unit is further used for, according to the one-to-one correspondence of the control channel and data channel
Relationship, and pass through the resource of control channel acquisition data channel corresponding with the control channel, the one-to-one relationship packet
It includes at least one of following: channel resource corresponding relationship, channel id index relative.
Wherein, the resource that the control channel and data channel are included is fixed, comprising:
The quantity for the PRB that each control channel is included and position are fixed and known, and by systemic presupposition；
The quantity for the PRB that each data channel is included and position be it is fixed and known, by corresponding control channel and
The one-to-one relationship determines.
The control channel can be PUCCH, and first transmission unit 10 is further used for, at PUCCH format
Reason carries the competition flag information and/or control information, by the competition flag information and/or control information with PUCCH
Any one format in format1/1a/1b/2/2a/2b/3 carries out processing carrying, and is mapped in selected control channel
It is sent.
The data channel can be PUSCH, and second transmission unit 20 is further used for, according to the control channel
In control information D2D communication service data is handled, and be mapped on corresponding data channel and sent.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (24)
1. a kind of method that device-to-device D2D data are sent, which is characterized in that this method comprises:
User equipment (UE) sends competition flag information in D2D control channel or sends competition flag information and control information, and
Carrying sends D2D communication service data on the corresponding data channel of the control channel, wherein the control channel and data
Channel is one-to-one relationship, and the resource that the control channel and data channel are included is fixed；The competition flag information
It is for indicating that the control channel and its corresponding data channel are used, i.e., described on next available resource period
Control channel and corresponding data channel where competition flag information are busy resource.
2. the method that D2D data are sent according to claim 1, which is characterized in that the control channel and data channel institute
The resource for including is system uplink resource or the dedicated resource of frequency range.
3. the method that D2D data according to claim 1 or claim 2 are sent, which is characterized in that described to be sent out in D2D control channel
It send competition flag information or sends competition flag information and control information, comprising:
By monitoring all or part of control channel, an idle control channel is wherein being selected, and in next resource week
The competition flag information is sent on phase in selected control channel or sends the competition flag information and control information.
4. the method that D2D data are sent according to claim 3, which is characterized in that described by monitoring all or part of control
Channel processed is wherein selecting an idle control channel, comprising:
It is randomly choosed in idle control channel；Or
According to control channel grouping, the attribute and/or priority of business datum demand to be sent, the UE, in idle control
It is selected in channel processed.
5. the method that D2D data according to claim 1 or claim 2 are sent, which is characterized in that sent in D2D control channel competing
When striving flag information, the competition flag information is for indicating that the control channel and its corresponding data channel are used, i.e.,
On next available resource period, control channel and corresponding data channel where the competition flag information are non-empty
Not busy resource.
6. the method that D2D data are sent according to claim 5, which is characterized in that include money in the competition flag information
Source cycle count value, the resource period count value indicate that the UE has used the control channel and respective data channels
Accumulative resource period number；Alternatively, the resource period count value indicates that the UE is allowed to use the control channel and corresponding
The surplus resources periodicity of data channel.
7. the method that D2D data according to claim 1 or claim 2 are sent, which is characterized in that send control in D2D control channel
When information processed, the control information is carried out to the carried D2D communication service data of the corresponding data channel of the control channel
Control instructions, the control information includes at least one of following information:
Modulation coding scheme MCS used in the data channel；
The mark ID of the UE of business datum to be sent；
The attribute information of the business datum carried on the data channel；
The ID of the intended recipient UE of the business datum carried on the data channel；
The coding redundancy version of the business datum carried on the data channel；
The counting that the business datum carried on the data channel retransmits.
8. the method that D2D data are sent according to claim 3, which is characterized in that the resource period is control letter
The resource that road and/or data channel are included duplicate minimum interval in the time domain.
9. the method that D2D data according to claim 1 or claim 2 are sent, which is characterized in that this method further include: according to described
The one-to-one relationship of control channel and data channel, and data corresponding with the control channel are obtained by control channel and are believed
The resource in road, the one-to-one relationship include at least one of the following: channel resource corresponding relationship, channel id index relative.
10. the method that D2D data according to claim 1 or claim 2 are sent, which is characterized in that the control channel sum number it is believed that
The resource that road is included is fixed, comprising:
The quantity for the Physical Resource Block PRB that each control channel is included and position are fixed and known, and by systemic presupposition；
The quantity for the PRB that each data channel is included and position be it is fixed and known, by corresponding control channel and described
One-to-one relationship determines.
11. the method that D2D data are sent according to claim 10, which is characterized in that the control channel is physical uplink
Control channel PUCCH, the UE are handled according to PUCCH format carries the competition flag information and/or control information, will be described
It competes flag information and/or controls information and carried out with any one format in PUCCH format 1/1a/1b/2/2a/2b/3
Processing carrying, and be mapped in selected control channel and sent.
12. the method that D2D data are sent according to claim 10, which is characterized in that the data channel is physical uplink
Shared channel PUSCH, the UE are handled D2D communication service data according to the control information in the control channel, and
It is mapped on corresponding data channel and is sent.
13. a kind of user equipment (UE) characterized by comprising
First transmission unit, for sending competition flag information in D2D control channel or sending competition flag information and control
Information；The competition flag information is for indicating that the control channel and its corresponding data channel are used, i.e., next
On available resource period, control channel and corresponding data channel where the competition flag information are busy resource；
Second transmission unit, for the carrying transmission D2D communication service data on the corresponding data channel of the control channel；
Wherein, the control channel and data channel are one-to-one relationship, and the control channel and data channel are included
Resource fix.
14. 3 UE according to claim 1, which is characterized in that the resource that the control channel and data channel are included is to be
System ascending resource or the dedicated resource of frequency range.
15. 3 or 14 UE according to claim 1, which is characterized in that first transmission unit is further used for, and passes through prison
All or part of control channel is listened, is wherein selecting an idle control channel, and selected on next resource period
Control channel on send the competition flag information or send the competition flag information and control information.
16. UE according to claim 15, which is characterized in that it is described by monitoring all or part of control channel, wherein
Select an idle control channel, comprising:
It is randomly choosed in idle control channel；Or
According to control channel grouping, the attribute and/or priority of business datum demand to be sent, the UE, in idle control
It is selected in channel processed.
17. 3 or 14 UE according to claim 1, which is characterized in that when sending competition flag information in D2D control channel,
The competition flag information is for indicating that the control channel and its corresponding data channel are used, i.e., next available
On resource period, control channel and corresponding data channel where the competition flag information are busy resource.
18. 7 UE according to claim 1, which is characterized in that it include resource period count value in the competition flag information,
The resource period count value indicates that the UE has used the accumulative resource period of the control channel and respective data channels
Number；Alternatively, the resource period count value indicates that the UE is allowed to use the surplus of the control channel and respective data channels
Remaining resource period number.
19. 3 or 14 UE according to claim 1, which is characterized in that described when sending control information in D2D control channel
Control information is the control instructions carried out to the carried D2D communication service data of the corresponding data channel of the control channel, institute
Stating control information includes at least one of following information:
Modulation coding scheme MCS used in the data channel；
The mark ID of the UE of business datum to be sent；
The attribute information of the business datum carried on the data channel；
The ID of the intended recipient UE of the business datum carried on the data channel；
The coding redundancy version of the business datum carried on the data channel；
The counting that the business datum carried on the data channel retransmits.
20. UE according to claim 15, which is characterized in that the resource period is that the control channel and/or data are believed
The resource that road is included duplicate minimum interval in the time domain.
21. 3 or 14 UE according to claim 1, which is characterized in that second transmission unit is further used for, according to institute
The one-to-one relationship of control channel and data channel is stated, and data corresponding with the control channel are obtained by control channel
The resource of channel, the one-to-one relationship include at least one of the following: channel resource corresponding relationship, channel id index relative.
22. 3 or 14 UE according to claim 1, which is characterized in that the resource that the control channel and data channel are included
It is fixed, comprising:
The quantity for the Physical Resource Block PRB that each control channel is included and position are fixed and known, and by systemic presupposition；
The quantity for the PRB that each data channel is included and position be it is fixed and known, by corresponding control channel and described
One-to-one relationship determines.
23. the UE according to claim 22, which is characterized in that the control channel is Physical Uplink Control Channel PUCCH, institute
It states the first transmission unit to be further used for, is handled according to PUCCH format and carry the competition flag information and/or control information,
By the competition flag information and/or control information with any one lattice in PUCCH format 1/1a/1b/2/2a/2b/3
Formula carries out processing carrying, and is mapped in selected control channel and is sent.
24. the UE according to claim 22, which is characterized in that the data channel is Physical Uplink Shared Channel PUSCH, institute
The second transmission unit is stated to be further used for, according to the control information in the control channel to D2D communication service data at
Reason, and be mapped on corresponding data channel and sent.
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| CN201310533170.1A CN104602179B (en) | 2013-10-31 | 2013-10-31 | A kind of method and user equipment of the transmission of D2D data |
| PCT/CN2014/078138 WO2014180383A1 (en) | 2013-10-31 | 2014-05-22 | D2d data sending method and user equipment |
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| CN104869652B (en) * | 2015-05-13 | 2018-06-01 | 武汉虹信通信技术有限责任公司 | The resource allocation methods that a kind of D2D patterns 2 communicate |
| EP3768022A1 (en) * | 2015-07-15 | 2021-01-20 | NEC Corporation | Terminal and method for d2d communications |
| CN106455088B (en) * | 2015-08-07 | 2021-04-16 | 上海诺基亚贝尔股份有限公司 | Control method and apparatus for data packet transmission in device-to-device communication |
| EP3328144B1 (en) | 2015-08-12 | 2024-01-03 | Huawei Technologies Co., Ltd. | User equipment, network equipment, and data transmission method |
| CN106559873B (en) * | 2015-09-25 | 2021-10-22 | 中兴通讯股份有限公司 | Information sending method and device |
| US11184951B2 (en) | 2016-08-12 | 2021-11-23 | Huawei Technologies Co., Ltd. | Signal transmission method and terminal |
| CN109496440B (en) * | 2018-10-17 | 2022-05-13 | 北京小米移动软件有限公司 | Time-frequency resource competition method, device, equipment and system for direct connection communication |
| CN111163437B (en) * | 2018-11-08 | 2022-07-01 | 大唐移动通信设备有限公司 | Communication monitoring method and communication equipment |
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| CN102111897A (en) * | 2010-12-15 | 2011-06-29 | 西安交通大学 | Method for realizing polarization-diversity-based directional cognitive medium access control (MAC) protocol |
| CN102498746A (en) * | 2009-06-16 | 2012-06-13 | 高通股份有限公司 | A method and apparatus for access procedure in a wireless communication system |
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| EP2510733A4 (en) * | 2009-12-11 | 2017-05-17 | Nokia Technologies Oy | Method, apparatus and computer program product for allocating resources in wireless communication network |
| CN102149174B (en) * | 2010-02-10 | 2016-03-30 | 中兴通讯股份有限公司 | A kind of machine service data method for uploading of MTC system and system |
| US9991998B2 (en) * | 2011-11-25 | 2018-06-05 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Ratio resource sharing and contention scheme for device-to-device communication in white space spectrum bands |
| GB2497589A (en) * | 2011-12-16 | 2013-06-19 | Renesas Mobile Corp | Resource Allocation in a Wireless Communication System |
| CN103024911A (en) * | 2012-11-30 | 2013-04-03 | 北京邮电大学 | Data transmission method of terminal direct communication in cellular and D2D hybrid network |
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| CN102498746A (en) * | 2009-06-16 | 2012-06-13 | 高通股份有限公司 | A method and apparatus for access procedure in a wireless communication system |
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