CN105101042B - Device-to-device communication and cell client/server adaptation scheme and user equipment - Google Patents
Device-to-device communication and cell client/server adaptation scheme and user equipment Download PDFInfo
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Abstract
The support D2D executed in D2D sending device, receiving device and base station is disclosed to communicate and the method for cell communication scheduling and corresponding D2D sending device, receiving device and base station.The method that the D2D sending device executes includes: that D2D sending device is requested by up channel to base station transmission D2D transmission；D2D sending device receives base station and sends the uplink scheduling for the equipment that request determines and the resource of the D2D transmission distribution to the equipment according to D2D；D2D sending device carries out D2D transmission and uplink according to the scheduling of base station.The method that the D2D receiving device executes includes: that D2D receiving device passes through up channel to base station transmission D2D reception parameter；D2D receiving device receives the uplink scheduling scheme for the D2D receiving device that base station receives parameter setting according to the D2D of D2D receiving device；And D2D receiving device carries out D2D transmission and uplink according to the scheduling of base station.
Description
Technical field
The present invention relates to wireless communication technology fields, arrive more particularly, to a kind of equipment based on field feedback
Equipment communication and cell client/server adaptation scheme.
Background technique
Modern mobile radio system shows two distinguishing features, first is that broadband high-speed rate, such as forth generation are wireless
The bandwidth of mobile communication system is up to 1Gbps up to 100MHz, downstream rate；Second is that mobile interchange, has pushed mobile Internet access, hand
The emerging services such as machine video on demand, online navigation.The two features propose high requirement to wireless mobile telecommunication technology, mainly
Have: superelevation rate wireless transmission, interregional AF panel, it is mobile in reliable transmission signal, distribution/centralization signal processing etc.
Deng.In following enhancing forth generation (4G) and the 5th generation (5G) mobile radio system, in order to meet above-mentioned growth requirement,
Various corresponding key technologies start to be suggested and prove, and are worth researcher in this field's extensive concern.
In October, 2007, International Telecommunication Union (ITU) approval global microwave internet access system (WiMax,
Worldwide Interoperability for Microwave Access) become the 4th 3G system standard.This generation
In the event in 3G latter stage in epoch, the actually preview of 4G Standard wars war.In fact, in order to cope with WLAN and
WiMax is the challenge of the Wireless IP Technology stream of representative, since 2005, third generation 3GPP tissue just set about carrying out completely new be
System upgrading, the i.e. standardization effort of long evolving system (LTE, Long Term Evolution).This is one based on orthogonal frequency
The standard four generations system of point multiplexing technology (OFDM, Orthogonal Frequency Division Multiplexing), in
The first edition is released at the beginning of 2009, and starts commercialization in the whole world successively in 2010.At the same time, 3GPP tissue about forth generation without
The standardization of line mobile communication system (4G, the Fourth Generation) formulates work also in the first half of the year in 2008
Starting, the system are known as advanced long evolving system (LTE-A, Long Term Evolution Advanced).The system
The key standardisation document of physical layer procedure completed at the beginning of 2011.In November, 2011 ITU group be woven in Chongqing in China just
Formula declaration, lte-a system and WiMax system are two official standards of 4G system.Currently, the commercial process of lte-a system is just
Gradually it is unfolded in the world.
Challenge according to following 10 years substantially has following hair for the forth generation mobile radio system of enhancing
Exhibition demand:
Higher WiMAX rate, and the cell hot spot region of emphasis optimization part；
Further increase user experience, it is accordingly required in particular to optimize the communication service of cell border areas；
In view of usable spectrum there can not be 1000 times of extension, therefore needs to continue research and can be improved spectrum utilization effect
The new technology of rate；
The frequency spectrum (5GHz, even higher) of high band will come into operation, to obtain biggish communication bandwidth；
The collaborative work of existing network (2G/3G/4G, WLAN, WiMax etc.), with sharing data flow；
It is directed to different business, application and service certain optimisation；
Strengthen the system supports the ability of large-scale machines communication；
Flexible, the intelligent and cheap network planning with arrange net；
Design scheme is to save the electricity consumption of network and the battery consumption of user equipment.
In order to realize above-mentioned growth requirement, international 3rd Generation Partnership Program (3GPP) group is woven in the 58th plenary session and discusses simultaneously
Pass through using device-to-device (D2D) communication technology as the key technology of the forth generation mobile radio system of enhancing.
The point-to-point communication of local communication or equity may be implemented in D2D technology, without Access Core Network, using D2D
The transmission mode of technology, mitigate load of base station and extend battery of mobile terminal using there is very positive work on the time
With.Whether there is macro base station generally according to scene locating for the user equipment (hereinafter referred to as D2D user equipment) for realizing D2D transmission
Covering, can be by the scene partitioning of D2D user equipment are as follows: has under the network coverage, without under the network coverage and subnetwork covering,
The case where scene of part of network coverage refers to, includes the network coverage and D2D user equipment without the network coverage.
Both the D2D technology needs under the network coverage now coexist with Cellular Networks uplink service, therefore, research and solve
The problem of how coexisting becomes extremely important.Specifically, such as when user needs to carry out D2D transmitting, it is necessary to avoid base station pair
Its uplink scheduling in same subframe.For another example, it when user needs to carry out D2D reception, also needs to avoid base station same
Uplink scheduling is carried out in subframe.Occur under above situation since in current Signalling Designing, base station can not be known, so necessary
Corresponding D2D is carried out for above situation and reports mechanism, so that base station be allow to carry out uplink tune according to the information of reporting of user
Degree.
Summary of the invention
The object of the present invention is to provide the dispatching methods and user equipment of a kind of D2D transmission and uplink, are able to solve
D2D transmission conflicts with uplink.
The present invention provides a kind of methods executed in D2D sending device, for supporting the tune of D2D transmission and uplink
Degree, which comprises D2D sending device sends D2D to base station by up channel and sends request；D2D sending device is from base
It stands and receives the money that base station sends the uplink scheduling for requesting the equipment determined and the D2D transmission distribution to the equipment according to D2D
Source；And D2D sending device carries out D2D transmission and uplink according to the scheduling of base station.
Correspondingly, the present invention provides a kind of methods that base station executes, comprising: base station is received from D2D sending device
D2D sends request；Base station sends the uplink scheduling of request decision D2D sending device according to the D2D received and gives the equipment
D2D transmission distribution resource；And base station notifies the resource of the uplink scheduling and distribution to the D2D sending device.
The present invention also provides a kind of methods executed in D2D receiving device, for supporting D2D transmission and uplink
Scheduling, which comprises D2D receiving device sends D2D to base station by up channel and receives parameter；D2D receiving device connects
Receive the uplink scheduling scheme for the D2D receiving device that base station receives parameter setting according to the D2D of D2D receiving device；And
D2D receiving device carries out D2D transmission and uplink according to the scheduling of base station.
Correspondingly, the present invention provides a kind of methods that base station executes, comprising: base station is received from D2D receiving device
D2D receives parameter；Base station receives the uplink scheduling scheme that parameter determines D2D receiving device according to the D2D received；And base station
The uplink scheduling scheme is notified to the D2D receiving device.
It may include with the next item down that the D2D that the D2D sending device is sent to base station, which sends request:
1.D2D sends application request: showing that the D2D equipment needs to send D2D information, this application request includes c1Bit letter
It ceases, wherein c1> 0 is predetermined value.The information of this application request is carried by the resource control signals of Uplink Shared Channel, for periodically
It sends or changes transmission when its D2D sends application request in the D2D equipment.
2.D2D sends resource bid request: resource needed for showing the D2D information that the D2D equipment needs to send, such as required
Resource block number etc., resource bid request includes c2Bit information, wherein c2> 0 is predetermined value.Resource bid request
Information is carried by the resource control signals of Uplink Shared Channel, changes its D2D transmission money for periodicity sending or in the D2D equipment
It is sent when the application request of source.
It may include following one or more that the D2D that the D2D receiving device is sent to base station, which receives parameter:
1.D2D receives application request: showing that the D2D equipment needs to receive D2D information, this application request includes c3Bit letter
It ceases, wherein c3> 0 is predetermined value.The information of this application request is carried by the resource control signals of Uplink Shared Channel, for periodically
It sends or changes transmission when its D2D receives application request in the D2D equipment.
Which D2D sending device 2.D2D sending device identity: identifying the D2D equipment from and receive D2D information, including
c4Bit information, wherein c4> 0 is predetermined value.The identity is carried by the resource control signals of Uplink Shared Channel, is the period
Property send or sent when corresponding D2D sending device changes.
3.D2D reception state, including following one or more:
A) listening state: show that the D2D equipment begins listening for D2D information, which includes c5Bit information, wherein c5>0
For predetermined value.The information of the listening state is carried by the resource control signals of Uplink Shared Channel, for periodicity sending or at this
Transmission when D2D equipment changes its listening state.
B) preference information listening state: show whether the D2D equipment listens to its preferred D2D scheduling information, the shape
State includes c6Bit information, wherein c6> 0 is predetermined value.The information of the preference information listening state by Uplink Shared Channel resource
Control signaling bearer, the transmission when the D2D equipment listens to the information of its preference.
The instruction of 4.D2D quality of connection, shows quality of connection between the D2D receiving device and its D2D sending device, including following
One:
A) channel quality information is reported: channel quality is divided into 2c7Grade, wherein c7> 0 is predetermined value, D2D receiving device
By measured channel quality level c7Bit information is reported to base station.The information of the channel quality is by Uplink Shared Channel
Resource control signals carrying is transmission when periodicity sending or channel quality level change.
B) bLock error rate is reported: bLock error rate is divided into 2 by givenc8Grade, wherein c8> 0 is predetermined value, and D2D connects
Receiving unit is by measured bLock error rate grade c8Bit information is reported to base station.The information of the bLock error rate is shared by uplink
The resource control signals of channel carry, and are transmission when periodicity sending or bLock error rate grade change.
C) number of retransmissions is reported: indicating the number of retransmissions of current D2D data, D2D receiving device is by number of retransmissions c9Than
Special information is reported to base station, wherein c9> 0 is predetermined value.The information is carried by the resource control signals of Uplink Shared Channel, every time
Receive data or the report when number of retransmissions reaches certain scheduled threshold value k times.
When D2D sending device, which sends D2D, sends application, base station receives the D2D and sends application, and can be to transmission
The D2D sending device that D2D sends application request distributes resource, or sends resource bid request according to its D2D and distribute resource to it.
In addition, base station can adjust uplink scheduling according to the resource distributed to D2D sending device, the conflict of the two is reduced.
The base station receives the D2D that D2D receiving device is reported and receives parameter, and can be reported according to D2D receiving device
D2D receive parameter, according to it is following one or more rule codetermine uplink scheduling scheme:
1. when D2D receiving device, which only carries out D2D, receives application, base station not in the corresponding part of cell D2D resource pool or
Uplink scheduling is carried out to the D2D equipment in whole subframes.
2. base station is not in the corresponding resource of the identity when D2D receiving device reports the identity of D2D sending device
Some or all of uplink scheduling is carried out to the D2D equipment in subframe.
3. base station is not enterprising in some or all of D2D equipment monitoring subframe when D2D receiving device reports listening state
Row uplink scheduling.
4. base station is not in the corresponding part of cell D2D resource pool when D2D receiving device reports preference information listening state
Or uplink scheduling is carried out to the D2D equipment in whole subframes.
5. base station can be carried out according to the calculating of D2D quality of connection when D2D receiving device reports the instruction of D2D quality of connection
The D2D number of subframes of row scheduling.For example, base station can meet the D2D in most D2D subframes when D2D quality of connection is high
Receiving unit carries out uplink scheduling；Opposite, when D2D quality of connection is low, base station can be in minority or cannot be in D2D subframe
The D2D receiving device is scheduled.
The D2D sending device and receiving device carry out D2D transmission with uplink according to the scheduling of base station and may include:
1. if certain subframe is only assigned to D2D transmission, carrying out D2D transmission in the subframe for D2D sending device；If
When certain subframe is by with D2D transmission and uplink is assigned as, uplink is carried out in the subframe.
2. for D2D receiving device, if when the unassigned uplink of certain subframe, can the subframe carry out D2D reception,
It monitors；If certain subframe is assigned to uplink, regardless of whether D2D monitoring or data receiver are needed, all progress uplink.
The present invention also provides the D2D sending device corresponded to the above method and D2D receiving device and base station equipments.
Hereinafter, will be described in detail with reference to accompanying drawings its specific structure.
Detailed description of the invention
By illustrating the preferred embodiment of the present invention with reference to the accompanying drawing, above and other purpose of the invention, spy will be made
Advantage of seeking peace is clearer, in which:
Fig. 1 is the schematic diagram of D2D sending device according to an embodiment of the present invention；
Fig. 2 is the schematic diagram of D2D receiving device according to an embodiment of the present invention；
Fig. 3 is executed in D2D sending device according to an embodiment of the present invention and D2D receiving device for supporting D2D to pass
The flow diagram of the method for defeated and uplink scheduling；
Fig. 4 is the schematic diagram of base station according to an embodiment of the present invention；And
Fig. 5 is executed in base station according to an embodiment of the present invention for supporting the side of D2D transmission and uplink scheduling
The flow chart of method.
Specific embodiment
With reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail, it is omitted in the course of the description for this
It is unnecessary details and function for invention, to prevent the understanding of the present invention from causing to obscure.
In order to which realization step of the invention is clearly set forth, some specific embodiments of the present invention are given below, fit
Cellular communication system for LTE-Release 12.It should be noted that the present invention is not limited to answering described in embodiment
With, and can be applied to other communication systems, such as the LTE system after LTE-Release 12/13.Correspondingly, it mentions herein
To technical term title may also change with the change of version.In addition, in the following description, based on different sides
The principle of the present invention and its specific design example is described in detail in case.However, it will be appreciated by those skilled in the art that
The example of the concrete configuration provided in following examples is only illustrative and not restrictive.For example, one of ordinary skill in the art
Be easy to it is according to the present invention introduction expect how by the solution of the present invention be applied to other application scenarios.
Fig. 1 shows the block diagram of D2D sending device 100 according to the present invention.As shown, D2D sending device 100 is wrapped
Include: D2D sends request unit 110, scheduled reception unit 120, D2D transmission unit 130 and determination unit 140.Art technology
Personnel should be understood that D2D sending device 100 further includes other function unit necessary to realizing its function, and such as various processors are deposited
Reservoir etc..
D2D sends request unit 110 and is configured as sending D2D transmission request by up channel.The D2D sends request
It may include that D2D sends application request or D2D transmission resource bid request.The request can be by the money of such as Uplink Shared Channel
Source controls signaling bearer.Specifically, D2D sending device can be sent out periodically by the resource control signals of Uplink Shared Channel
Giving its D2D to send, application is requested or D2D sends resource bid request, can also apply for that request or D2D send money when its D2D is sent
Source application request passes through Uplink Shared Channel next time again resource control signals when changing are sent.
Scheduled reception unit 120 is configured as the uplink scheduling for receiving the D2D resource allocation of base station transmission, base station is sent.
D2D transmission unit 130 is configured as sending D2D information.
Determination unit 140 is configured as determining the resource that D2D is sent based on the received scheduling information of scheduled reception unit 120
And the resource of uplink.It specifically, should when unassigned D2D transmission or ascending resource transmission for a certain subframe n
Equipment does not carry out any transmission in the subframe；When assigned D2D transmission but unallocated uplink, the equipment is in the subframe
Upper progress D2D transmission；It when assigned uplink but unassigned D2D transmission or is distributed uplink simultaneously and D2D is passed
When defeated, which carries out uplink in the subframe.
Fig. 2 shows the block diagrams of D2D receiving device 200 according to the present invention.As shown, D2D receiving device 200 wraps
Include: D2D receives parameter reporting element 210, scheduled reception unit 220, D2D receiving unit 230 and determination unit 240.This field
It should be understood to the one skilled in the art that D2D receiving device 200 further includes other function unit necessary to realizing its function, such as various processing
Device, memory etc..
D2D receives parameter reporting element 210 and is configured as sending D2D reception parameter by up channel.The D2D is received
Parameter may include that D2D receives application request, D2D sending device mark, the instruction of D2D reception state, D2D quality of connection.These
Information can be carried by the resource control signals of such as Uplink Shared Channel.Specifically, D2D receiving device can be periodically by
The resource control signals transmitting portion of Uplink Shared Channel or the information above of whole, can also be when the information that it sends changes
It is sent again by the resource control signals of Uplink Shared Channel next time.
Scheduled reception unit 220 is configured as receiving the uplink scheduling that base station is sent.
D2D receiving unit 230 is configured as receiving D2D information.
Determination unit 240 is configured as determining D2D receiving device row based on the received scheduling information of scheduled reception unit 220
To receive D2D information or carrying out uplink.Specifically, for a certain subframe n, when unassigned D2D reception or uplink money
When source is transmitted, which does not carry out any behavior in the subframe；It, should when assigned D2D reception but unallocated uplink
Equipment carries out D2D reception in the subframe；Distributed when assigned uplink but unassigned D2D reception or simultaneously uplink
When transmission and D2D are received, which carries out uplink in the subframe.
Fig. 3 show executed in D2D sending device according to the present invention and D2D receiving device for supporting D2D to transmit
With the process of uplink scheduling.
As shown, D2D sending device passes through up channel first and sends D2D transmission to base station in D2D sending device side
Request.Then, base station is received to send the uplink scheduling for the equipment that request determines according to D2D and transmit to the D2D of the equipment
The resource of distribution.Then, D2D transmission and uplink are carried out according to the scheduling of base station.In D2D receiving device side, D2D reception is set
It is standby that D2D reception parameter is sent to base station by up channel first.Then, base station is received to be received according to the D2D of D2D receiving device
The uplink scheduling scheme for the D2D receiving device of parameter setting.Then, according to base station scheduling carry out D2D transmission and on
Row transmission.
Fig. 4 shows the block diagram of base station 300 according to the present invention.As shown, base station 300 includes receiving unit 310, adjusts
Spend unit 320 and notification unit 330.It will be understood by those skilled in the art that base station further include realize its function necessary to its
His functional unit, such as various processors, memory.
Receiving unit 310 is configured as receiving the D2D from D2D sending device and sends request and/or set from D2D reception
Standby D2D receives parameter.
Scheduling unit 320 is configured as being sent according to the D2D received from D2D sending device and requests to determine the upper of the equipment
Row is dispatched and transmits the resource of distribution to the D2D of the equipment and/or receive ginseng according to the D2D received from D2D receiving device
Number determines the uplink scheduling scheme of the equipment.
Notification unit 330 be configured as notifying to the D2D sending device resource of the uplink scheduling and distribution and/or
The uplink scheduling scheme is notified to the D2D receiving device.
Correspondingly, Fig. 5 show that base station according to the present invention executes for supporting D2D transmission and uplink scheduling
Process.
As shown, base station sends request according to D2D and determines after receiving the D2D transmission request from D2D sending device
The uplink scheduling of the fixed equipment, and give the D2D of equipment transmission distribution resource.Specifically, base station is reported according to D2D sending device
D2D send application request or D2D send resource bid request, optimize the equipment D2D send resource and uplink money
The distribution in source reduces the conflict of the two.Then, base station notifies determined uplink scheduling and distribution to the D2D sending device
Resource.
After receiving the reception parameter from D2D receiving device, base station receives parameter according to D2D and determines the upper of the equipment
Row scheduling.Specifically, the parameter that base station is reported according to D2D receiving device optimizes the distribution of the uplink transmission resource of the equipment, subtracts
Few equipment D2D is received to conflict with the resource distributed between uplink.Then, base station notifies institute to the D2D receiving device
The uplink scheduling scheme of decision.
In the following, several implementation examples that will further provide D2D sending device and D2D receiving device.
D2D sending device implementation example 1
When D2D sending device needs to carry out D2D transmission, the equipment by the resource control signals of Uplink Shared Channel to
Base station sends D2D and sends application request, which occupies 1 bit information (0 indicates not apply, 1 indicates that application D2D is sent), this
When the bit information is set to 1.In addition, the equipment is in a week when D2D sending device selection cycle sends application request
After phase, when still there are D2D data to need to send, then continue the bit information being set to 1, otherwise then by the bit information
It is set to 0.When D2D sending device selects aperiodic transmission application request, the equipment is after D2D data are sent by the bit
It is set to 0.
The D2D that base station receives the D2D sending device sends request, and obtaining the bit information is 1.Base station selected conjunction
Suitable D2D sends D2D of the resource (assuming that resource collection is S) for the equipment and sends, and suitably adjusts the uplink of the equipment
The resource allocation information and uplink scheduling information are sent to the equipment by down channel to reduce scheduling conflict by scheduling.
D2D sending device obtains resource allocation information S by receiving down channel.D2D sending device is in the money distributed
D2D transmission is carried out on the S of source.When the scheduled D2D transmission simultaneously of certain subframe and uplink, D2D emits equipment and carries out uplink biography
It is defeated.D2D emits equipment and is transmitted according to base station scheduling in the case of other.
D2D sending device implementation example 2
When D2D sending device needs to carry out D2D transmission, the equipment by the resource control signals of Uplink Shared Channel to
Base station sends D2D and sends resource bid request, which occupies 8 bit informations and specifically need the time-frequency applied to provide to indicate
Source.In addition, when D2D sending device selection cycle send resource bid request when, the equipment after a cycle, when according to
When so there are D2D data to need to send, then continues to send resource bid request, otherwise not retransmit.When the selection of D2D sending device is non-
When period sends resource bid request, which will send the instruction for stopping resource allocation after D2D data are sent.
The D2D that base station receives the D2D sending device sends resource bid request, and obtains the resource information of application.
Base station selected suitable D2D sends D2D of the resource (assuming that resource collection is S) for the equipment and sends, and suitably adjusts this
The uplink scheduling of equipment is sent to reduce scheduling conflict, by the resource allocation information and uplink scheduling information by down channel
The equipment.
D2D sending device obtains resource allocation information S by receiving down channel.D2D sending device is in the money distributed
D2D transmission is carried out on the S of source.When the scheduled D2D transmission simultaneously of certain subframe and uplink, D2D emits equipment and carries out uplink biography
It is defeated.D2D emits equipment and is transmitted according to base station scheduling in the case of other.
D2D receiving device implementation example 1
When D2D receiving device preferences reception D2D information, the equipment by the resource control signals of Uplink Shared Channel to
Base station sends D2D and receives application request, which occupies 1 bit information, and (0 indicates that preference D2D is not received, and 1 expression preference D2D connects
Receive), the bit information is set to 1 at this time.In addition, the equipment exists when D2D receiving device selection cycle sends application request
After a cycle, when still preference D2D data receiver, then continue the bit information being set to 1, otherwise then by the bit
Information is set to 0.When D2D receiving device selects aperiodic transmitting and receiving application request, the equipment is by preferences reception D2D channel
The bit is set to 0 when being converted to not preferences reception D2D information.
The D2D that base station receives the D2D receiving device receives application request, and obtaining the bit information is 1.Base station is suitable
Locality adjusts the uplink scheduling of the equipment to reduce scheduling conflict.After adjustment, when needing uplink scheduling by uplink scheduling information
The D2D receiving device is sent to by down channel.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 2
When D2D receiving device receives D2D information, the equipment is by the resource control signals of Uplink Shared Channel to base station
The identity of corresponding D2D sending device is sent, which occupies 8 bit informations.In addition, when D2D receiving device selects
When periodicity sending, which when receiving the D2D sending device data, then continues the identity after a cycle
Mark is sent, and otherwise then sends the mark without D2D sending device.When D2D receiving device selects aperiodic transmitting and receiving to ask
When asking, after which receives the D2D end of message, the mark without D2D sending device is sent.
Base station receives the D2D sending device mark of the D2D receiving device, and obtains the resource allocation of the sending device
Information.Base station suitably adjusts the uplink scheduling of D2D receiving device to reduce scheduling conflict.After adjustment, uplink scheduling is being needed
When uplink scheduling information is sent to the D2D receiving device by down channel.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 3
When D2D receiving device monitors D2D information, the equipment is by the resource control signals of Uplink Shared Channel to base station
Listening state instruction is sent, 1 bit information is occupied, wherein 0 mark is not being monitored, 1 mark is monitoring D2D transmission.In addition, working as
When D2D receiving device selection cycle is sent, which when the equipment continues to monitor, then continues after a cycle
1 is sent, otherwise sends 0.When D2D receiving device selects aperiodic transmission, after which monitors the D2D end of message, 0 is sent.
Base station receives the listening state instruction of the D2D receiving device, and obtaining the bit information is 1.Base station is appropriate
Ground adjusts the uplink scheduling of D2D receiving device to reduce the scheduling conflict of uplink and D2D monitoring.After adjustment, on needs
Uplink scheduling information is sent to the D2D receiving device by down channel when row scheduling.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 4
When D2D receiving device listens to the D2D information of preference, which is believed by the resources control of Uplink Shared Channel
Number to base station send preference information listening state instruction, occupy 1 bit information, wherein 0 mark do not hear preference D2D pass
Defeated, 1 mark listens to the D2D transmission of preference.In addition, D2D receiving device selects aperiodic transmission, the preference which monitors
After the D2D end of message, 0 is sent.
Base station receives the preference information listening state instruction of the D2D receiving device, and obtaining the bit information is 1.
Base station suitably adjusts the uplink scheduling of D2D receiving device to reduce the D2D of uplink and D2D preference and receive scheduling conflict.
After adjustment, uplink scheduling information is sent to the D2D receiving device by down channel when needing uplink scheduling.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 5
When D2D receiving device receives D2D information, the equipment is by the resource control signals of Uplink Shared Channel to base station
Channel quality information is sent, is occupied 4 bit informations (0-15), using the existing criteria for classifying in 3GPP LTE Release 12.This
Outside, when D2D receiving device selection cycle is sent, which sends current channel quality letter after a cycle
Breath.When D2D receiving device selects aperiodic transmission, when channel quality information changes, reporting channel qualities information.
Base station receives the channel quality information of the D2D receiving device.Base station suitably adjusts the uplink of D2D receiving device
Scheduling receives scheduling conflict to reduce uplink and D2D, and D2D receiving device preferable for channel quality can be in part
Uplink scheduling is carried out in the D2D subframe of re-transmission.After adjustment, uplink scheduling information is passed through into down channel when needing uplink scheduling
It is sent to the D2D receiving device.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 6
When D2D receiving device receives D2D information, the equipment is by the resource control signals of Uplink Shared Channel to base station
Transmission block bit error rate information occupies 2 bit informations (0-3), using the predefined criteria for classifying, such as can drawing using following table
Point.
| BLock error rate information | BLock error rate section |
| 0 | 0.4~1 |
| 1 | 0.15~0.4 |
| 2 | 0.05~0.15 |
| 3 | 0~0.05 |
In addition, the equipment is sent current after a cycle when D2D receiving device selection cycle is sent
BLock error rate information.When D2D receiving device selects aperiodic transmission, when bLock error rate information changes, reports block and miss
Code rate information.
Base station receives the bLock error rate information of the D2D receiving device.Base station suitably adjusts the uplink of D2D receiving device
Scheduling receives scheduling conflict to reduce uplink and D2D, and D2D receiving device lower for bLock error rate can be in part weight
Uplink scheduling is carried out in the D2D subframe of biography.After adjustment, uplink scheduling information is sent out by down channel when needing uplink scheduling
Give the D2D receiving device.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
D2D receiving device implementation example 7
When D2D receiving device receives D2D information, the equipment is by the resource control signals of Uplink Shared Channel to base station
It sends number of retransmissions to report, occupies 2 bit informations (0-3), identify the number of retransmissions of currently received information.In addition, when D2D connects
Receiving unit is reported after receiving D2D data.
The number of retransmissions that base station receives the D2D receiving device is reported.Base station suitably adjusts the uplink of D2D receiving device
Scheduling receives scheduling conflict, higher for number of retransmissions but not up to maximum retransmission D2D to reduce uplink and D2D
It receives, uplink scheduling can be carried out in D2D subframe some or all of hereafter.It, will be upper when needing uplink scheduling after adjustment
Row scheduling information is sent to the D2D receiving device by down channel.
When scheduled D2D is received with uplink certain subframe simultaneously, D2D receiving device carries out uplink.Other feelings
D2D receiving device is transmitted or is received according to the scheduling of base station and D2D transmitting equipment under condition.
It is noted that the above D2D receiving device implementation example receives parameter type according to the D2D that D2D receiving device is reported,
It multinomial can realize simultaneously, description is not repeated herein.
Although having been combined the preferred embodiment of the present invention above shows the present invention, those skilled in the art will
It will be appreciated that without departing from the spirit and scope of the present invention, can carry out various modifications, replace and change to the present invention
Become.Therefore, the present invention should not be limited by above-described embodiment, and should be limited by appended claims and its equivalent.
Claims (7)
1. a kind of method executed by device-to-device D2D sending device, the scheduling communicated for supporting D2D to communicate with cell,
The described method includes:
D2D sending device sends D2D to base station by up channel and sends request；
D2D sending device receives the uplink scheduling for the equipment that base station is determined according to D2D transmission request and to the D2D of the equipment
Transmit the resource of distribution；And
D2D sending device carries out D2D transmission and uplink according to the scheduling of base station；
Wherein, if the D2D sending device according to base station scheduling carry out D2D transmission and uplink include: a subframe only by
When being assigned as D2D transmission, D2D transmission is carried out in the subframe；If a subframe is assigned as D2D transmission and uplink simultaneously,
Uplink is carried out in the subframe.
2. according to the method described in claim 1, wherein, D2D sending device is sent by the D2D that up channel is sent to base station
Request is carried by the resource control signals of Uplink Shared Channel.
3. according to the method described in claim 1, wherein, D2D sending device is sent by the D2D that up channel is sent to base station
Request includes following one:
● D2D sends application request: showing that the D2D equipment needs to send D2D information, this application request includes c1Bit information,
Middle c1> 0 is predetermined value, changes transmission when its D2D sends application request for periodicity sending or in the D2D equipment；And
● D2D sends resource bid request: resource needed for showing the D2D information that the D2D equipment needs to send, the resource bid
Request includes c2Bit information, wherein c2> 0 is predetermined value, changes its D2D transmission resource for periodicity sending or in the D2D equipment
It is sent when application request.
4. a kind of method that base station executes, the scheduling communicated for supporting D2D to communicate with cell, which comprises
Base station receives the D2D from D2D sending device and sends request；
Base station sends request according to the D2D received and determines the uplink scheduling of D2D sending device and to the D2D transmission of the equipment
The resource of distribution；And
Base station notifies the resource of the uplink scheduling and distribution to the D2D sending device；
Wherein, when the D2D that base station receives the transmission of D2D sending device sends application request, base station sends application to D2D is sent
The D2D sending device of request distributes resource, or when the D2D that base station receives the transmission of D2D sending device sends resource bid request
When, base station sends resource bid request according to its D2D and distributes resource to it, and
Base station adjusts uplink scheduling according to the resource distributed to D2D sending device, reduces the conflict of the two.
5. a kind of method executed by device-to-device D2D receiving device, the dispatching party communicated for supporting D2D to communicate with cell
Method, comprising:
D2D receiving device sends D2D to base station by up channel and receives parameter；
D2D receiving device receive base station according to the D2D of D2D receiving device receive parameter setting for the D2D receiving device
Uplink scheduling scheme；And
D2D receiving device carries out D2D transmission and uplink according to the scheduling of base station；
Wherein, if the D2D receiving device according to base station scheduling carry out D2D transmission and uplink include: a subframe not by
When being assigned as uplink, D2D reception, monitoring are carried out in the subframe；If a subframe is assigned to uplink, regardless of whether
Need D2D monitoring or data receiver, all progress uplink.
6. according to the method described in claim 5, wherein, D2D receiving device is received by the D2D that up channel is sent to base station
Parameter is carried by the resource control signals of Uplink Shared Channel.
7. according to the method described in claim 5, wherein, D2D receiving device is received by the D2D that up channel is sent to base station
Parameter includes following one or more:
● D2D receives application request: showing that the D2D equipment needs to receive D2D information, this application request includes c3Bit information,
Middle c3> 0 is predetermined value, changes transmission when its D2D receives application request for periodicity sending or in the D2D equipment；
● D2D sending device identity: the D2D equipment is identified from which D2D sending device and receives D2D information, including c4Bit
Information, wherein c4> 0 is predetermined value, is sent for periodicity sending or when corresponding D2D sending device changes；
● D2D reception state, including following one or more:
A) listening state: show that the D2D equipment begins listening for D2D information, which includes c5Bit information, wherein c5> 0 is pre-
Definite value, be periodicity sending or the transmission when the D2D equipment changes its listening state,
B) preference information listening state: show whether the D2D equipment listens to its preferred D2D scheduling information, the state packet
Include c6Bit information, wherein c6> 0 is predetermined value, the transmission when the D2D equipment listens to the information of its preference；And
● the instruction of D2D quality of connection shows quality of connection between the D2D receiving device and its D2D sending device, including with next
:
A) channel quality information is reported: including c7A bit information, wherein c7> 0 is predetermined value, is shown measured by D2D receiving device
Channel quality belong to and be divided into 2c7Which grade of the channel quality of a grade, for periodicity sending or in channel quality etc.
Transmission when grade changes,
B) bLock error rate is reported: including c8A bit information, wherein c8> 0 is predetermined value, shows block measured by D2D receiving device
The bit error rate, which belongs to, is divided into 2c8Which grade of the bLock error rate of a grade, wherein c8> 0 is predetermined value, and D2D receiving device will
Measured bLock error rate grade c8Bit information is reported to base station, is changed for periodicity sending or bLock error rate grade
When send,
C) number of retransmissions is reported: including c9A bit information, wherein c9> 0 is predetermined value, indicates the re-transmission time of current D2D data
Number, to receive data or the report when number of retransmissions reaches certain scheduled threshold value k times every time.
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| CN114051257A (en) | 2016-09-21 | 2022-02-15 | Oppo广东移动通信有限公司 | Method and device for transmitting signals |
| CN109041242B (en) * | 2017-06-08 | 2021-11-30 | ***通信集团浙江有限公司 | Uplink scheduling method and device for cell terminal |
| CN111294166B (en) * | 2019-03-22 | 2021-11-02 | 展讯通信（上海）有限公司 | Service transmission and service configuration sending method and device, storage medium, terminal and base station |
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| CN102638893A (en) * | 2012-03-31 | 2012-08-15 | 南京邮电大学 | Base-station (BS)-combined direct-through terminal optimized resource allocation method in direct-through cellular system |
| CN102843162A (en) * | 2012-09-12 | 2012-12-26 | 西安交通大学 | Method for performing spread spectrum communication in cellular network by device-to-device communication (D2D) technology |
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| CN103139921A (en) * | 2011-11-24 | 2013-06-05 | 华为技术有限公司 | Device-to-device (D2D) method, D2D device and base station |
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| WO2009138820A1 (en) * | 2008-05-15 | 2009-11-19 | Nokia Corporation | Methods, apparatuses and computer program products for providing coordination of device to device communication |
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| CN103002578A (en) * | 2011-09-08 | 2013-03-27 | ***通信集团公司 | Method, device and system for realizing D2D (device to device) data transmission in cellular network |
| CN103139921A (en) * | 2011-11-24 | 2013-06-05 | 华为技术有限公司 | Device-to-device (D2D) method, D2D device and base station |
| CN102638893A (en) * | 2012-03-31 | 2012-08-15 | 南京邮电大学 | Base-station (BS)-combined direct-through terminal optimized resource allocation method in direct-through cellular system |
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