CN107135461A - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN107135461A CN107135461A CN201610114633.4A CN201610114633A CN107135461A CN 107135461 A CN107135461 A CN 107135461A CN 201610114633 A CN201610114633 A CN 201610114633A CN 107135461 A CN107135461 A CN 107135461A
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- time slot
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention provides a kind of data transmission method and device, wherein, this method includes：Determine that the user equipment (UE) that is used for of base station distribution carries out the dedicated time slot on the unauthorized carrier wave of device-to-device D2D data transfers and the shared time slot on the unauthorized carrier wave for carrying out D2D data transfers including the two or more UE including above-mentioned UE；D2D data transfers are carried out using above-mentioned dedicated time slot and shared time slot.By the present invention, the problem of can not carrying out D2D communications using unauthorized frequency range present in correlation technique is solved, and then has been reached using the progress D2D communications of unauthorized frequency range, the effect of resource utilization is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method and device.
Background technology
Device-to-device (Device-to-device, referred to as D2D) communication is that a kind of closely user is directly carried out end to end
Communication mode, equipment room direct communication is without by base station, reducing the cost and time delay of network transmission, it is possible to increase data
Efficiency of transmission.With the development of multimedia technology and interaction technique, increasing business need to carry out between equipment low time delay,
The data interaction of high-speed, such as the multimedia big data transmission between user, immediate interactive interactive game.In this environment
Under, D2D communication modes, which have, directly carries out data interaction without by base station, base station is only between advantageous advantage, user
Need the control device communication of macroscopic view.
With continuing to develop for D2D technologies, the patent that correlation is transmitted using D2D communications also emerges in an endless stream.For example：Can
The apparatus and method for realizing device-to-device in cellular network (D2D) communication；Transmission method and communication equipment；D2D communications
Method and apparatus；Method, terminal direct connection terminal and base station of terminal direct connection etc., these patents mainly for be all D2D communication
Transmission on frequency range is authorized.
The D2D communications in correlation technique are illustrated below：
Correlation technique one
Correlation technique one provides the apparatus and method that a kind of utilization D2D communications send information.In the cell for allowing to have D2D clusters
It is central, D2D operations can be allocated resources to.Network is via evolved base station (evolved Node B, referred to as eNB)
Notifying user equipment (User Equipment, referred to as UE) is that D2D operates the set for having reserved resource.Hereafter, it is specific
D2D communications in eNB cells can be to use these reserved resource blocks, while conventional Long Term Evolution (Long Term
Evolution, referred to as LTE) can also share spectrum resources between portfolio and D2D transmission.Base station can be logical according to condition
The blank subregion for defining device-to-device is crossed, to avoid the interference that other users equipment belt comes.The application scenarios of the program such as Fig. 1
Shown, Fig. 1 is the application scenarios schematic diagram in correlation technique one.
The embodiment in correlation technique one is illustrated below, the embodiment comprises the following steps：
Step1：ENB is allocated to frame resource；
ENB is determined to the frame resource communicated for D2D, and configures D2D regions, and eNB is further in D2D regions
Distribute D2D and find area；
Step2：ENB notifies D2D regions configuring condition to UE；
D2D business can be both transmitted in the resource block that D2D business is reserved, can also be identical with traditional LTE resources
Resource block on transmit.Corresponding frame structure is as shown in Fig. 2 Fig. 2 is the frame structure schematic diagram in correlation technique one.
Analyzed more than：The technical scheme distributes frame resource to complete D2D transmission by eNB.The technology is not considered
Propagation delay time is reduced using unauthorized frequency range.
It follows that the embodiment in correlation technique one is just for the frame structure design for authorizing frequency range, it is impossible to suitable for unauthorized
Frequency range；
D2D communications still are possible to produce competition with a large amount of others LTE business, cause the decline of resource utilization.
Correlation technique two
Correlation technique two provides a kind of method and apparatus communicated for D2D, to improve the availability of frequency spectrum and message transmission rate.
This method by D2D communications by being multiplexed into senior long term evolution (Long-Term Evolution Advance, referred to as LTE-A)
Uplink frequency spectrum resource (i.e. UE to eNB link), it is to avoid the interference to existing network terminal.Wherein on the logical of D2D
Letter method, is that the control information and data message that need transmission are carried among Physical Resource Block, communicates and send out in equipment room D2D
Serve and state Physical Resource Block to targeted customer.
The embodiment in correlation technique two is illustrated below, the embodiment comprises the following steps：
Step1：The control information and data message that need transmission are carried among Physical Resource Block, for drawing for Physical Resource Block
Dividing mainly has following two methods.
Method one：Physical Resource Block includes M OFDM (Orthogonal Frequency Division in time domain
Multiplexing, referred to as OFDM) symbol, N number of subcarrier is included on frequency domain, an OFDM symbol and a son are carried
The temporal frequency resource that ripple is limited is resource unit (Resource Element, referred to as RE), and wherein M and N are integer；
Control information includes Modulation and Coding Scheme (Modulation and Coding Scheme, referred to as MCS), redundancy versions
(Redundancy Version, referred to as RV) and new data indicate (New Data Indication, referred to as NDI) three
At least one of in, it is mapped in the HFS of Physical Resource Block；Data message be mapped in except control information map RE it
On outer blank RE；Specific mapping refers to Fig. 3, and Fig. 3 is the physical resource configuration schematic diagram one in correlation technique two.
Method two：Physical Resource Block, comprising M orthogonal frequency division multiplex OFDM symbol, includes N in time-domain in frequency domain
The temporal frequency resource representation that individual subcarrier, an OFDM symbol and a subcarrier are limited is resource unit RE, wherein M
It is integer with N；Control information includes at least one in both channel quality indicator (CQI) and pre-coding matrix instruction PMI, control
Information MAP processed is on the RE of Physical Resource Block medium-high frequency part, and data message is mapped in Physical Resource Block except control information is reflected
On the RE penetrated blank RE；Specific mapping refers to Fig. 4, and Fig. 4 is the physical resource configuration schematic diagram in correlation technique two
Two.
Step2：Physical Resource Block is sent in equipment room D2D communication links to target UE.
The resource allocation method in the embodiment of correlation technique two is also only used for authorizing frequency range, it is impossible to be used in unauthorized frequency range.
The problem of for present in correlation technique D2D communications can not be carried out using unauthorized frequency range, not yet propose at present effective
Solution.
The content of the invention
The invention provides a kind of data transmission method and device, at least to solve not utilizing unauthorized present in correlation technique
The problem of frequency range carries out D2D communications.
According to an aspect of the invention, there is provided a kind of data transmission method, including：Determine the unauthorized carrier wave of base station distribution
On dedicated time slot and the unauthorized carrier wave on shared time slot, wherein, the dedicated time slot is set for user equipment (UE)
Standby to arrive equipment D2D data transfers, the two or more UE that the shared time slot is used for including the UE carries out the D2D
Data transfer；The D2D data transfers are carried out using the dedicated time slot and the shared time slot.
Optionally it is determined that on the dedicated time slot and the unauthorized carrier wave on the unauthorized carrier wave of base station distribution
The shared time slot includes：The request message that request carries out uplink scheduling is sent to the base station；Determine the base station according to described
The ascending resource of request message distribution；Using the ascending resource by for controlling the control information of the D2D data transfers to send
To the base station；Determine the dedicated time slot and the shared time slot distributed according to the control information base station.
Alternatively, using the ascending resource by for controlling the control information of the D2D data transfers to be sent to the base
Station includes：The control information is sent to by the base by device-to-device transmission report D2D TR using the ascending resource
Stand, wherein, the D2D TR are the expansible word retained according to Logic Channel Identifier LCID in Uplink Shared Channel UL-SCH
The D2D data transfers that section is determined report instruction, and the report instruction includes data type, priority, transmitting terminal numbering, reception
End numbering, data and cyclic check position.
Alternatively, carrying out the D2D data transfers using the dedicated time slot and the shared time slot includes：Using described special
D2D data described in slot transmission；When not transferring the D2D data using the dedicated time slot, the shared time slot is utilized
The remaining D2D data not transferred of transmission.
Alternatively, transmitting the D2D data using the dedicated time slot includes：Idle channel is carried out on the dedicated time slot to comment
Estimate CCA detections；When it is the free time that testing result, which is the dedicated time slot, the D2D data are transmitted using the dedicated time slot.
Alternatively, included using the remaining D2D data not transferred of the shared slot transmission：In the shared time slot
Upper progress clear channel assessment (CCA) CCA detections；When it is the free time that testing result, which is the shared time slot, passed using the shared time slot
The defeated remaining D2D data not transferred；When testing result is that the shared time slot is busy, wait after the scheduled time again
Secondary progress CCA detections, and when detecting the shared time slot for the free time, do not transmitted using the shared slot transmission is remaining
The complete D2D data.
Alternatively, the least unit of the dedicated time slot and/or the communication frame where the shared time slot is small resource block MRB, its
In, a MRB is comprising 14 orthogonal frequency division multiplex OFDM symbols in time domain, and time domain size is two time slots；In frequency domain
Upper to include 12 continuous subcarriers, frequency domain size is 180kHz.
According to another aspect of the present invention there is provided a kind of data transmission method, including：When distributing special on unauthorized carrier wave
Shared time slot in gap and the unauthorized carrier wave, wherein, the dedicated time slot is used for user equipment (UE) and carries out device-to-device
D2D data transfers, the two or more UE that the shared time slot is used for including the UE carries out the D2D data transfers；
The UE is given by the dedicated time slot and the shared time slot notification.
Alternatively, the shared time slot bag distributed on the dedicated time slot and the unauthorized carrier wave on the unauthorized carrier wave
Include：Receive the request message for the request progress uplink scheduling that the UE is sent；Ascending resource is distributed according to the request message and is incited somebody to action
The ascending resource of distribution is notified to the UE；Receive the UE and utilize the described for controlling of the ascending resource transmission
The control information of D2D data transfers；The dedicated time slot and the shared time slot are distributed according to the control information.
Alternatively, the control for being used to control the D2D data transfers that the UE utilizes the ascending resource to send is received
Information includes：Receive the UE and the control that report D2D TR are sent is transmitted by device-to-device using the ascending resource
Information, wherein, the D2D TR be according in Uplink Shared Channel UL-SCH Logic Channel Identifier LCID retain it is expansible
The D2D data transfers report instruction of field determination, the report instruction includes data type, priority, transmitting terminal and numbers, connects
Receiving end numbering, data and cyclic check position.
Alternatively, distributing the dedicated time slot and the shared time slot according to the control information includes：In the unauthorized carrier wave
Upper progress clear channel assessment (CCA) CCA detections；After the unauthorized carrier wave free time is detected, institute is distributed according to the control information
State dedicated time slot and the shared time slot.
Alternatively, distributing the dedicated time slot being used on the unauthorized carrier wave of the UE progress D2D data transfers and be used for
After the shared time slot that the two or more UE including the UE is carried out on the unauthorized carrier wave of the D2D data transfers,
Methods described also includes：Clear channel assessment (CCA) CCA detections are carried out on the shared time slot；When detecting, the shared time slot is empty
When not busy continuous time length is more than the duration for being used for the UE progress D2D data transfers, the described special of distribution is withdrawn
Time slot and the shared time slot.
Alternatively, the least unit of the dedicated time slot and/or the communication frame where the shared time slot is small resource block MRB, its
In, a MRB is comprising 14 orthogonal frequency division multiplex OFDM symbols in time domain, and time domain size is two time slots；In frequency domain
Upper to include 12 continuous subcarriers, frequency domain size is 180kHz.
According to another aspect of the present invention there is provided a kind of data transmission device, including：Determining module, for determining base station point
The shared time slot on the dedicated time slot and the unauthorized carrier wave on unauthorized carrier wave matched somebody with somebody, wherein, the dedicated time slot is used
Family equipment UE carries out device-to-device D2D data transfers, the two or more that the shared time slot is used for including the UE
UE carries out the D2D data transfers；Transport module, for carrying out the D2D using the dedicated time slot and the shared time slot
Data transfer.
According to another aspect of the present invention there is provided a kind of data transmission device, including：Distribute module, it is unauthorized for distributing
The shared time slot on dedicated time slot and the unauthorized carrier wave on carrier wave, wherein, the dedicated time slot enters for user equipment (UE)
Row device-to-device D2D data transfers, the two or more UE that the shared time slot is used for including the UE carries out described
D2D data transfers；Notification module, for giving the UE by the dedicated time slot and the shared time slot notification.
By the present invention, using shared on the dedicated time slot and the unauthorized carrier wave on the unauthorized carrier wave for determining base station distribution
Time slot, wherein, the dedicated time slot is used for user equipment (UE) and carries out device-to-device D2D data transfers, the shared time slot
The D2D data transfers are carried out for the two or more UE including the UE；Utilize the dedicated time slot and described common
Enjoy time slot and carry out the D2D data transfers.D2D communications can not be carried out present in correlation technique using unauthorized frequency range by solving
The problem of, and then reached using the progress D2D communications of unauthorized frequency range, improve the effect of resource utilization.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the application scenarios schematic diagram in correlation technique one；
Fig. 2 is the frame structure schematic diagram in correlation technique one；
Fig. 3 is the physical resource configuration schematic diagram one in correlation technique two；
Fig. 4 is the physical resource configuration schematic diagram two in correlation technique two；
Fig. 5 is the flow chart of the first data transmission method according to embodiments of the present invention；
Fig. 6 is the flow chart of second of data transmission method according to embodiments of the present invention；
Fig. 7 is LAA schematic diagram of a scenario according to embodiments of the present invention；
Fig. 8 is D2D data transfers report instruction schematic diagram according to embodiments of the present invention；
Fig. 9 is the schematic diagram of channel resource configuration according to embodiments of the present invention；
Figure 10 be according to embodiments of the present invention in scheme one LBE in the case of corresponding frame structure schematic diagram；
Figure 11 be according to embodiments of the present invention in scheme one FBE in the case of corresponding frame structure schematic diagram；
Figure 12 is data transfer flow figure one according to embodiments of the present invention；
Figure 13 be according to embodiments of the present invention in scheme two LBE in the case of corresponding frame structure schematic diagram；
Figure 14 be according to embodiments of the present invention in scheme two FBE in the case of corresponding frame structure schematic diagram；
Figure 15 is data transfer flow figure two according to embodiments of the present invention；
Figure 16 be according to embodiments of the present invention in different channels access way under handling capacity comparison diagram；
Figure 17 is the contrast schematic diagram of two kinds of communication frames according to embodiments of the present invention in the case of LBE；
Figure 18 is the schematic diagram of dedicated time slot according to embodiments of the present invention and shared time slot；
Figure 19 is the structured flowchart of the first data transmission device according to embodiments of the present invention；
Figure 20 is the structured flowchart of second of data transmission device according to embodiments of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting,
The feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc.
It is for distinguishing similar object, without for describing specific order or precedence.
A kind of data transmission method is provided in the present embodiment, and Fig. 5 is the first transmission side data according to embodiments of the present invention
The flow chart of method, as shown in figure 5, the flow comprises the following steps：
Step S502, determines the shared time slot on the dedicated time slot and above-mentioned unauthorized carrier wave on the unauthorized carrier wave of base station distribution,
Wherein, the dedicated time slot is used for user equipment (UE) progress device-to-device D2D data transfers, and the shared time slot is used to include
State the two or more UE progress D2D data transfers including UE；
Step S504, D2D data transfers are carried out using above-mentioned dedicated time slot and shared time slot.
Wherein, that perform aforesaid operations can be UE.
By above-mentioned steps, UE can determine the dedicated time slot and shared time slot on the unauthorized carrier wave of base station distribution, wherein, should
Dedicated time slot is the special time slot used by the UE, and shared time slot is can to enter exercise by way of competition is used by multiple UE
Time slot, and then can be using the dedicated time slot and shared time slot determined (if dedicated time slot can transfer UE D2D numbers
According to then D2D data transfers can be carried out merely with dedicated time slot) D2D data transfers are carried out, it is achieved thereby that using unauthorized
Carrier wave carries out the purpose of D2D communications, and asking for D2D communications can not be carried out present in correlation technique using unauthorized frequency range by solving
Topic, and then reached using the progress D2D communications of unauthorized frequency range, improve the effect of resource utilization.
In an optional embodiment, determine on the dedicated time slot and unauthorized carrier wave on the unauthorized carrier wave of above-mentioned base station distribution
Shared time slot include：The request message that request carries out uplink scheduling is sent to base station；Determine base station according to above-mentioned request message point
The ascending resource matched somebody with somebody；Using the ascending resource by for controlling the control information of above-mentioned D2D data transfers to be sent to base station；It is determined that
Dedicated time slot and shared time slot that the base station is distributed according to above-mentioned control information.Wherein, above-mentioned control information can include following
At least one：Data-source device mark (Identity, referred to as ID), data purpose equipment ID, type of service, data volume,
Priority.Wherein, above-mentioned request message can be entered by dispatch request (Scheduling Request, referred to as SR) resource
Row is reported, and the SR resources can be base station distribution and resource special UE.Above-mentioned SR resources and ascending resource can be equal
It is to authorize the resource on carrier wave.
In an optional embodiment, using above-mentioned ascending resource by for controlling the control information of D2D data transfers to be sent to
Base station includes：Pass through device-to-device transmission report (D2D Transmission Report, referred to as D2D TR) using ascending resource
Above-mentioned control information is sent to base station, wherein, the D2D TR be according to Uplink Shared Channel (Uplink-Shared Channel,
Referred to as UL-SCH) in Logic Channel Identifier (Logical Channel ID, referred to as LCID) retain expansible field it is true
Fixed D2D data transfers report instruction, this report instruction include data type, priority, transmitting terminal numbering, receiving terminal number,
Data and cyclic check position.Wherein, D2D TR can (Media Access Control be referred to as by medium education
MAC) the MAC Control Element of layer are reported.
In an optional embodiment, carrying out D2D data transfers using above-mentioned dedicated time slot and shared time slot includes：Using upper
State dedicated time slot transmission D2D data；It is surplus using shared slot transmission when not transferring D2D data using above-mentioned dedicated time slot
The remaining D2D data not transferred.In this embodiment it is possible to complete D2D data jointly using dedicated time slot and shared time slot
Transmission, it should be understood that, if in the case of the transmission of D2D data just can be completed merely with dedicated time slot, can be with
The transmission of D2D data is carried out merely with dedicated time slot, the transmission without carrying out D2D data using shared time slot.
In an optional embodiment, included using above-mentioned dedicated time slot transmission D2D data：Carried out on above-mentioned dedicated time slot
Clear channel assessment (CCA) (Clear Channel Assessment, referred to as CCA) is detected；When testing result is above-mentioned dedicated time slot
During for the free time, D2D data are transmitted using dedicated time slot.In this embodiment, the purpose that UE performs CCA detections is in order to again
Secondary confirmation dedicated time slot is unoccupied, to ensure Successful transmissions D2D data, in practical application, UE can also be not used in specially
With CCA detections are carried out on time slot, it can specifically determine whether UE performs CCA detections according to actual conditions.
In an optional embodiment, included using the remaining D2D data not transferred of above-mentioned shared slot transmission：
Clear channel assessment (CCA) CCA detections are carried out on above-mentioned shared time slot；When it is the free time that testing result, which is above-mentioned shared time slot, utilize
The remaining D2D data not transferred of shared slot transmission；When testing result is that above-mentioned shared time slot is busy, when waiting scheduled
Between after carry out CCA detections again, and detect above-mentioned shared time slot for it is idle when, do not passed using shared slot transmission is remaining
The D2D data being totally lost.The above-mentioned scheduled time can be determined according to back off algorithm, and the back off algorithm is illustrated below：
When starting backoff procedure, back-off timer is set a random-backoff time, back off time by corresponding UEWherein Random () is random function, and the random number of generation is uniform in [0,1]
Distribution；Slot Time are the basic delay units determined by system；CW is contention window size, true by the number for sharing time slot
It is fixed.Generally, when channel busy is detected, back-off timer stops timing, and by currency (that is, in back-off timer
Remaining timing time) it is used as the time delay kept out of the way next time；If detecting channel idle, back-off timer starts and successively decreased
Calculate.When the value of counter is 0, communication node will send frame.When multiple D2D UE postpone and enter backoff state,
Backoff value (correspond to above-mentioned currency) minimum UE by access right of the acquisition to channel.
In an optional embodiment, the least unit of the communication frame where above-mentioned dedicated time slot and/or shared time slot is small resource
Block (Mini Resource Block, referred to as MRB), wherein, a MRB can include 14 orthogonal frequencies in time domain
OFDM symbol is multiplexed, time domain size is two time slots (that is, 1ms)；Comprising 12 continuous subcarriers on frequency domain, frequency
Domain size is 180kHz.Wherein, the least unit of the communication length in communication frame is divided into MRB, it is possible to achieve time domain and frequency
Dual multiplexing on domain；Also, the call duration time in communication frame is divided into shared time slot and dedicated time slot, base station can be according to reporting
The demand proportioning different with dedicated time slot progress to sharing time slot, and dedicated time slot is scheduled；UE does not have in dedicated time slot
The data interaction of completion will be transferred to shared time slot, substantially increase resource utilization.
A kind of data transmission method is additionally provided in the present embodiment, and Fig. 6 is second of data transfer according to embodiments of the present invention
The flow chart of method, as shown in fig. 6, the flow comprises the following steps：
Step S602, distributes the dedicated time slot on unauthorized carrier wave and the shared time slot on the unauthorized carrier wave, wherein, it is above-mentioned special
Device-to-device D2D data transfers are carried out for user equipment (UE) with time slot, above-mentioned shared time slot exists for including above-mentioned UE
Interior two or more UE carries out D2D data transfers；
Step S604, by above-mentioned dedicated time slot and shared time slot notification to UE.
Wherein, perform aforesaid operations can be base station, and UE, can after the dedicated time slot and shared time slot of base station notice is received
To carry out D2D data transfers using dedicated time slot and shared time slot.By above-mentioned steps, base station can be distributed on unauthorized carrier wave
For the UE dedicated time slots carried out data transmission and shared time slot, wherein, the dedicated time slot is special by when above-mentioned UE is used
Gap, shared time slot is the time slot that can be used by multiple UE by way of competition is used, and then UE can utilize notice
Dedicated time slot and shared time slot (if dedicated time slot can transfer UE D2D data, can enter merely with dedicated time slot
Row D2D data transfers) D2D data transfers are carried out, it is achieved thereby that the purpose of D2D communications is carried out using unauthorized carrier wave,
The problem of can not carrying out D2D communications using unauthorized frequency range present in correlation technique is solved, and then has been reached using unauthorized
Frequency range carries out D2D communications, improves the effect of resource utilization.
In an optional embodiment, the shared time slot distributed on dedicated time slot and unauthorized carrier wave on unauthorized carrier wave includes：
Receive the request message for the request progress uplink scheduling that UE is sent；Ascending resource is distributed according to above-mentioned request message and by the upper of distribution
Row resource notification is to UE；Receive the control information for being used to control D2D data transfers that UE utilizes above-mentioned ascending resource to send；Root
Dedicated time slot and shared time slot are distributed according to above-mentioned control information.Wherein, above-mentioned control information can include at least one of：Number
According to source device ID, data purpose equipment ID, type of service, data volume, priority.Wherein, above-mentioned request message can lead to
Cross SR resources to be reported, the SR resources can be base station distribution and resource special UE.Above-mentioned SR resources and upper
Row resource can authorize the resource on carrier wave.
In an optional embodiment, the control for being used to control D2D data transfers that above-mentioned UE utilizes ascending resource to send is received
Information processed includes：Receive UE and the control information that report D2D TR are sent transmitted by device-to-device using above-mentioned ascending resource,
Wherein, the D2D TR are that the expansible field retained according to Logic Channel Identifier LCID in Uplink Shared Channel UL-SCH is determined
The report instruction of D2D data transfers, above-mentioned report instruction include data type, priority, transmitting terminal numbering, receiving terminal number,
Data and cyclic check position.Wherein, D2D TR can be reported by the MAC Control Element of MAC layer.
In an optional embodiment, distributing dedicated time slot and the shared time slot according to above-mentioned control information includes：Awarded non-
Weigh and clear channel assessment (CCA) CCA detections are carried out on carrier wave；After the unauthorized carrier wave free time is detected, distributed according to above-mentioned control information
Dedicated time slot and shared time slot.In this embodiment, base station can perform multiple CCA (that is, ECCA) detections.
In an optional embodiment, it is used in distribution special on the unauthorized carrier wave of above-mentioned UE progress D2D data transfers
Time slot and for including including UE two or more UE carry out D2D data transfers unauthorized carrier wave on shared time slot after,
This method also includes：Clear channel assessment (CCA) CCA detections are carried out on above-mentioned shared time slot；When detecting, above-mentioned shared time slot is idle
Continuous time length be more than when being used for UE and carrying out the duration of D2D data transfers, withdraw the above-mentioned dedicated time slot of distribution and shared
Time slot.When detecting the idle continuous time length of above-mentioned shared time slot more than the duration for being used for UE progress D2D data transfers,
It is considered that UE has transferred D2D data, so that base station can select to withdraw channel, so as to carry out the data transfer of next round.
In an optional embodiment, the least unit of the communication frame where above-mentioned dedicated time slot and/or shared time slot is small resource
Block MRB, wherein, a MRB is comprising 14 orthogonal frequency division multiplex OFDM symbols in time domain, and time domain size is two
Time slot；Comprising 12 continuous subcarriers on frequency domain, frequency domain size is 180kHz.
It was found from above-mentioned multiple embodiments, based on the access of auxiliary mandate frequency spectrum (the License Assisted Access, letter proposed at present
Referred to as LAA) technology, what is proposed in the embodiment of the present invention is the frame structure communicated towards D2D, to improve the deficiency of existing scheme,
The time delay of the problem of mitigating LTE base station high load capacity, further reduction data transfer, lifts Consumer's Experience.Therefore, the present invention is real
Apply example and be conceived to frame structure design of the D2D communications in unauthorized frequency range, it is considered to same system (such as LTE-U (LTE-Unlicensed))
The resource competing problem of (Wi-Fi and LTE-U) between interior and different system, and solve the technical problem of correlation：
1) when D2D UE have transmission demand, i.e., transmission is reported to ask to base station, just can be with when base station detects idle channel
Control UE to carry out D2D data transfers, save the time that UE parses descending notification signal.
2) different D2D UE carry out associated transport according to the arbitration result of base station using unauthorized frequency range.D2D communication frames it is logical
The least unit of letter length is MRB, and base station carries out carrying out in units of MRB according to the business and data volume of D2D reporting of user
Scheduling.
3) communication length of D2D communication frames is divided into dedicated time slot (dedicated slot) and shared time slot (shared slot),
The corresponding communication resource of dedicated time slot is scheduled by base station, shares the communication resource of time slot then by the way of random competition is kept out of the way
Access, reduces the possibility clashed between different D2D UE.
Frame structure and the resource distribution side of a kind of high resource utilization towards D2D data interactions are proposed in the embodiment of the present invention
Method.In the frame structure prototype base of the LAA equipment (Load Based Equipment, referred to as LBE) based on load proposed
On plinth, using by base station macro-control, the allocation strategy of division resource is in unauthorized frequency in time-domain and frequency domain two-dimensional space
Section completes data interaction.Specific resource allocation methods are determined by D2D UE data volume and type of service.
With reference to specific embodiment, the present invention will be described：
Embodiments of the invention can be divided into two parts：D2D UE interact embodiment and the transmission reality based on frame structure with base station data
Apply example.
Embodiment is interacted with base station data to D2D UE below to illustrate：
The embodiment of the present invention is mainly under LAA scenes as shown in Figure 7, the communication between D2D UE in unauthorized frequency range,
Wherein, Fig. 7 is LAA schematic diagram of a scenario according to embodiments of the present invention.
Although the D2D communications in the embodiment of the present invention are realized in unauthorized frequency range, it is still desirable to base station carry out total scheduling and
Arbitration, this scheduling and control process can authorize frequency range to carry out.
When D2D UE produce data transfer demands, D2D UE are adjusted firstly the need of by the required resource that carries out data transmission of oneself
Degree request is sent to base station, and it is UE distribution resources that then arbitration is made in base station according to obtained information.Specifically include following steps：
Step 1, the transmission request of base station reported data：D2D UE are in ascending control channel (Physical Uplink Control
Channel, referred to as PUCCH) on by SR notify base station oneself there is uplink scheduling request to transmit, request eNodeB (letter
Referred to as eNB, corresponding to above-mentioned base station) distribute ascending resource for it；Wherein SR resources are that UE is special and carried out by eNB
Distribution, the specific transmission flow on SR may be referred to agreement 3GPP TR 36.213.Then, corresponding UE is distributed in base station
Ascending resource on by D2D TR by the control information of data transfer such as data-source device ID, data purpose equipment ID, business
Type, data volume, priority etc. report base station.D2D TR are the expansible words retained according to LCID in current UL-SCH
The D2D data transfers report instruction of section design, D2D TR are reported by the MAC Control Element of MAC layer, Fig. 8
It is D2D data transfers report instruction schematic diagram according to embodiments of the present invention.
Step 2, base station arbitration distribution resource：When base station detects the unauthorized frequency range free time, just according to D2D UE reported result
(that is, the control information that D2D UE are reported) is arbitrated, and arbitration result is sent into each D2D UE.By unauthorized frequency
Time slot in section is divided into two kinds of dedicated time slot and shared time slot, when the information that base station is reported according to UE determines dedicated time slot and is shared
The proportioning of gap, and the arbitration result of dedicated time slot is only announced in base station, and for sharing time slot, each D2D equipment is then used and moved back
The mode contention access kept away.Wherein, the purpose that base station carries out CCA detection idle channels is, for the ease of control, to be easy to support to transport
Seek the flow monitoring of business, charging etc..
The transmission embodiment based on frame structure is illustrated below：
Under LAA scene, in order to avoid being disturbed with Wi-Fi signal or others LAA signals, carrier wave is typically taken
The mode of monitoring, correspondence frame structure is then embodied in, and before actually data are sent, is had idle channel in corresponding frame structure and is commented
Estimate CCA.The adoptable scheme of the embodiment of the present invention is the setting LBE based on load or equipment (the Frame Based based on frame
Equipment, referred to as FBE).
The embodiment of the present invention is intended to design suitable channel access mode, improves resource utilization.Here, proposing that two kinds of channels are visited
Ask scheme：
Scheme one comprises the following steps：
Step 1：According to the arbitration result of base station, D2D UE first carry out data interaction on dedicated time slot, if in base station distribution
Resource in without data interaction is completed, then enter shared time slot and fight for channel again and complete remaining data interaction.In order to ensure
Channel is held, CCA energy measurings will be carried out before each data interaction.Fig. 9 is letter according to embodiments of the present invention
The schematic diagram of road resource distribution.
Step 2：In shared time slot, it is carried out continuously the energy detected after n CCA and is less than the time span of threshold value more than logical
The detection duration of letter, base station thinks that channel can take, and data have completed interaction, and base station can select to withdraw channel, enter
The data transfer of row next round.
In the case of LBE frame structure, frame length and on-fixed, LAA base stations are entered using multiple CCA, i.e. ECCA mode
Row detection, when detecting time span of the energy less than threshold value more than the detection duration that can be communicated, base station thinks that channel can use,
LBE frames log-on data is transmitted, and is with the different place of FBE structures, and due to multiple CCA detections, the structure of frame can not
Alignd with LTE frame structure, now LAA base stations need to send a Preamble signal.
Figure 10 be according to embodiments of the present invention in scheme one LBE in the case of corresponding frame structure schematic diagram, Figure 11 be according to this
Corresponding frame structure schematic diagram in the case of the FBE of scheme one in inventive embodiments.
In unauthorized frequency range, the scheme one towards D2D data transfer can be as shown in figure 12, and Figure 12 is according to present invention implementation
The data transfer flow figure one of example, the flow comprises the following steps：
Step S1202, D2D UE is transmitted by SR to base station reported data to be asked；
Step S1204, base station carries out CCA detections, judges whether channel is idle, in judged result to be to go to step S1206,
Otherwise, CCA detections are proceeded；
Step S1206, the arbitration result of dedicated time slot is issued according to D2D UE reported result；
Step S1208, D2D UE are transmitted according to arbitration result in dedicated time slot；
Step S1210, determines whether that redundant data does not complete interaction, no in judged result when being, to go to step S1212
Then, terminate；
Step S1212, data interaction is completed using shared time slot.
The detailed process of scheme two is as follows：
Step 1：D2D UE all access channel by the way of competition.Due to all being accessed in the way of competition, therefore it is not required to
Base station is wanted to be arbitrated according to the result reported.D2D UE detect whether channel is occupied before transmitting the data, first, if detection
To channel idle, then busy channel is transmitted；If detecting channel busy, using a kind of random backoff, one section is waited
Detect whether channel is idle after time again.
Step 2：When starting backoff procedure, back-off timer is set a random-backoff time, back off time by corresponding nodeWherein Random () random function, the random number of generation is uniformly distributed in [0,1]；
SlotTime is the basic delay unit determined by system；CW is contention window size, by shared time slot (it is considered that non-award
Weigh carrier wave on all time slots be shared time slot) number determine.Generally, when channel busy is detected, timing is kept out of the way
Device stops timing, and regard currency (that is, the remaining timing time of back-off timer) as the time delay kept out of the way next time；
If detecting channel idle, back-off timer starts calculating of successively decreasing.When the value of counter is 0, communication node will send frame.
When multiple D2D UE postpone and enter backoff state, backoff value (corresponding to above-mentioned currency) is minimum to be obtained to letter
The access right in road.
Figure 13 be according to embodiments of the present invention in scheme two LBE in the case of corresponding frame structure schematic diagram, Figure 14 be according to this
Corresponding frame structure schematic diagram in the case of the FBE of scheme two in inventive embodiments.
In unauthorized frequency range, the scheme two towards D2D data transfer can be as shown in figure 15, and Figure 15 is according to present invention implementation
The data transfer flow figure two of example, the flow comprises the following steps：
Step S1502, D2D UE have the demand of data transfer；
Step S1504, D2D UE carries out CCA detections to channel；
Step S1506, judges whether channel is idle, if idle, goes to step S1518, otherwise, goes to step S1508；
Step S1508, into random backoff mechanism (utilizing back off algorithm)；
Step S1510, produces back off time T；
Step S1512, judges whether channel is idle, if idle, goes to step S1214, otherwise, goes to step S1216；
Step S1514, back off time successively decreases；
Step S1516, judges whether back off time is decremented to 0, and step S1218 is gone to if being decremented to 0, otherwise, goes to step
Rapid S1212；
Step S1518, D2D UE complete data interaction.
Figure 16 be according to embodiments of the present invention in different channels access way under handling capacity comparison diagram, as seen from Figure 16,
With the increase of portfolio, reasonable disposition dedicated time slot proportion can make the corresponding handling capacity of scheme one be more than the correspondence of scheme two
Handling capacity.
It should be noted that general situation is all after detecting channel idle in base station, notification signal is broadcast to need into
Row communication D2D UE, then D2D equipment report the information such as ID, business datum amount and priority to base station again, base station is entered again
Row arbitration, is so accomplished by taking the duration of communication frame.And in embodiments of the present invention, D2D UE can be periodically by data
Transmission demand is transferred to base station, and base station is authorizing frequency range to carry out signal resolution, treating that base station is detected according to reporting situation to be arbitrated
To after channel idle, user can carry out D2D data interactions in unauthorized frequency range.And in order to confirm that frequency range is held, in data
Before transmission, D2D UE will also carry out a CCA detection again.Figure 17 is that two kinds of communication frames according to embodiments of the present invention exist
Contrast schematic diagram in the case of LBE.
Communication time is divided into dedicated time slot and shared time slot by the present invention, improves resource utilization.Base station can be according to transmission
Demand is flexibly matched to dedicated time slot and shared time slot, and only announces the arbitration result to dedicated time slot, if many
Remaining data interaction will be transferred to shared time slot and be accessed by the way of keeping out of the way.If detecting sky after shared time slot carries out some CCA
Spare time, base station has the right to withdraw channel, the data transfer for other D2D UE.If now believing without new transmission demand
Road can be used for other technologies (such as Wi-Fi), can so avoid the unnecessary wasting of resources.Figure 18 is according to present invention implementation
The dedicated time slot of example and the schematic diagram of shared time slot.
The least unit of communication length is divided into MRB by the communication frame designed in the embodiment of the present invention, and a MRB is in time domain
Comprising 14 OFDM symbols, time domain size is two time slots, i.e. 1ms；Comprising 12 continuous subcarriers on frequency domain,
Frequency domain size is 180kHz；If 1 symbol *, 1 subcarrier is defined as into a resource particle (Resource Element, RE),
Then a MRB includes 14*12 RE.Base station is scheduled distribution to MRB according to D2D portfolio and priority, real
Show the multiplexing of time-domain frequency domain two dimension, improve resource utilization.
Through the above description of the embodiments, those skilled in the art can be understood that the side according to above-described embodiment
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases before
Person is more preferably embodiment.Understood based on such, technical scheme substantially makes tribute to prior art in other words
The part offered can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as
ROM/RAM, magnetic disc, CD) in, including some instructions to cause a station terminal equipment (can be mobile phone, computer,
Server, or the network equipment etc.) perform method described in each embodiment of the invention.
A kind of data transmission device is additionally provided in the present embodiment, and the device is used to realize above-described embodiment and preferred embodiment,
Repeating no more for explanation was carried out.As used below, term " module " can realize predetermined function software and/or
The combination of hardware.Although the device described by following examples is preferably realized with software, hardware, or software and hard
The realization of the combination of part is also that may and be contemplated.
Figure 19 is the structured flowchart of the first data transmission device according to embodiments of the present invention, as shown in figure 19, the device bag
Determining module 192 and transport module 194 are included, the device is illustrated below.
It is shared on determining module 192, the dedicated time slot and above-mentioned unauthorized carrier wave on unauthorized carrier wave for determining base station distribution
Time slot, wherein, above-mentioned dedicated time slot is used for user equipment (UE) and carries out device-to-device D2D data transfers, above-mentioned shared time slot
D2D data transfers are carried out for the two or more UE including above-mentioned UE；Transport module 194, is connected to above-mentioned determination mould
Block 192, for carrying out D2D data transfers using above-mentioned dedicated time slot and shared time slot.
In an optional embodiment, above-mentioned determining module 192 can be determined as follows the unauthorized load of base station distribution
The shared time slot on dedicated time slot and unauthorized carrier wave on ripple：The request message that request carries out uplink scheduling is sent to base station；Really
The ascending resource that fixed above-mentioned base station is distributed according to request message；Using above-mentioned ascending resource by the control for controlling D2D data transfers
Information processed is sent to base station；Determine the dedicated time slot and shared time slot distributed according to control information above-mentioned base station.
In an optional embodiment, above-mentioned determining module 192 will can be used to control using ascending resource in the following way
The control information of D2D data transfers is sent to base station：It will be controlled by device-to-device transmission report D2D TR using ascending resource
Information processed is sent to base station, wherein, the D2D TR are to be protected according to Logic Channel Identifier LCID in Uplink Shared Channel UL-SCH
The D2D data transfers report instruction that the expansible field stayed is determined, above-mentioned report instruction includes data type, priority, transmission
End numbering, receiving terminal numbering, data and cyclic check position.
In an optional embodiment, above-mentioned transport module 194 can utilize dedicated time slot and shared time slot in the following way
Carry out D2D data transfers：D2D data are transmitted using above-mentioned dedicated time slot；When not transferring D2D using above-mentioned dedicated time slot
During data, the remaining D2D data not transferred of above-mentioned shared slot transmission are utilized.
In an optional embodiment, above-mentioned transport module 194 can transmit above-mentioned D2D using dedicated time slot in the following way
Data：Clear channel assessment (CCA) CCA detections are carried out on dedicated time slot；When it is the free time that testing result, which is dedicated time slot, using special
With slot transmission D2D data.
In an optional embodiment, above-mentioned transport module 194 can be remained using above-mentioned shared slot transmission in the following way
The remaining D2D data not transferred：Clear channel assessment (CCA) CCA detections are carried out on above-mentioned shared time slot；When testing result is
When above-mentioned shared time slot is the free time, the remaining D2D data not transferred of above-mentioned shared slot transmission are utilized；When testing result is
Shared time slot is busy, waits and carries out CCA detections after the scheduled time again, and when detecting shared time slot for the free time, is utilized
The remaining D2D data not transferred of shared slot transmission.
In an optional embodiment, the least unit of the communication frame where above-mentioned dedicated time slot and/or shared time slot is small resource
Block MRB, wherein, a MRB is comprising 14 orthogonal frequency division multiplex OFDM symbols in time domain, and time domain size is two
Time slot；Comprising 12 continuous subcarriers on frequency domain, frequency domain size is 180kHz.
Figure 20 is the structured flowchart of second of data transmission device according to embodiments of the present invention, as shown in figure 20, the device bag
Distribute module 202 and notification module 204 are included, the device is illustrated below.
Distribute module 202, for distributing the shared time slot on the dedicated time slot on unauthorized carrier wave and above-mentioned unauthorized carrier wave, wherein,
Above-mentioned dedicated time slot is used for user equipment (UE) and carries out device-to-device D2D data transfers, and above-mentioned shared time slot is above-mentioned for including
Two or more UE including UE carries out D2D data transfers；Notification module 204, is connected to above-mentioned distribute module 202, is used for
By above-mentioned dedicated time slot and shared time slot notification to UE.
In an optional embodiment, above-mentioned distribute module 202 can distribute special on unauthorized carrier wave in the following way
Shared time slot on time slot and unauthorized carrier wave：Receive the request message for the request progress uplink scheduling that UE is sent；According to the request
Message distributes ascending resource and notifies the ascending resource of distribution to UE；Receive above-mentioned UE utilize ascending resource send be used for control
The control information of D2D data transfers processed；Dedicated time slot and shared time slot are distributed according to above-mentioned control information.
In an optional embodiment, above-mentioned distribute module 202 can be received UE in the following way and be sent using ascending resource
Be used for control the control information of D2D data transfers：UE is received to transmit by device-to-device using above-mentioned ascending resource
The control information that D2D TR are sent is reported, wherein, the D2D TR are according to logic channel in Uplink Shared Channel UL-SCH
Identify the D2D data transfers report instruction that the expansible field that LCID retains is determined, above-mentioned report instruction include data type,
Priority, transmitting terminal numbering, receiving terminal numbering, data and cyclic check position.
In an optional embodiment, when above-mentioned distribute module 202 can distribute special according to control information in the following way
Gap and shared time slot：Clear channel assessment (CCA) CCA detections are carried out on above-mentioned unauthorized carrier wave；Detecting above-mentioned unauthorized carrier wave
After free time, dedicated time slot and shared time slot are distributed according to above-mentioned control information.
In an optional embodiment, said apparatus also includes processing module, and the processing module is used to be used for UE progress in distribution
Dedicated time slot on the unauthorized carrier wave of D2D data transfers and carry out D2D data for the two or more UE including UE
After shared time slot on the unauthorized carrier wave of transmission, clear channel assessment (CCA) CCA detections are carried out on above-mentioned shared time slot；Work as inspection
When measuring the idle continuous time length of above-mentioned shared time slot more than the duration for being used for UE progress D2D data transfers, distribution is withdrawn
Dedicated time slot and shared time slot.
In an optional embodiment, the least unit of the communication frame where above-mentioned dedicated time slot and/or shared time slot is small resource
Block MRB, wherein, a MRB is comprising 14 orthogonal frequency division multiplex OFDM symbols in time domain, and time domain size is two
Time slot；Comprising 12 continuous subcarriers on frequency domain, frequency domain size is 180kHz.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, can by with
Under type is realized, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at multiple places respectively
Manage in device.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by
It is set to the program code that storage is used to perform following steps：
S1, determines the shared time slot on the dedicated time slot and above-mentioned unauthorized carrier wave on the unauthorized carrier wave of base station distribution, wherein,
The dedicated time slot is used for user equipment (UE) and carries out device-to-device D2D data transfers, and the shared time slot is used to include above-mentioned UE
Two or more UE inside carries out D2D data transfers；
S2, D2D data transfers are carried out using above-mentioned dedicated time slot and shared time slot.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, distributes the dedicated time slot on unauthorized carrier wave and the shared time slot on the unauthorized carrier wave, wherein, above-mentioned dedicated time slot
Device-to-device D2D data transfers are carried out for user equipment (UE), above-mentioned shared time slot is for two including above-mentioned UE
Individual above UE carries out D2D data transfers；
S2, by above-mentioned dedicated time slot and shared time slot notification to UE.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (Read-Only
Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard
Disk, magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs above steps according to the program code stored in storage medium.
Alternatively, the specific example in the present embodiment may be referred to the example described in above-described embodiment and optional embodiment,
The present embodiment will not be repeated here.
Following effect can be reached by the above embodiment of the present invention：
1) D2D UE are asked to base station reported data, and base station is arbitrated according to reported result, treats that base station detects channel idle
After can be transmitted, it is not necessary in communication frame take call duration time parse base station dispatch command；
2) least unit of the communication length in communication frame is divided into MRB, realizes the dual multiplexing on time-domain and frequency-domain；And
And, the call duration time in communication frame is divided into shared time slot and dedicated time slot, base station can be according to reporting demand to shared time slot and specially
Different proportionings are carried out with time slot, and dedicated time slot is scheduled；UE will turn in the data interaction that dedicated time slot is not completed
Enter shared time slot, substantially increase resource utilization.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can use general calculating
Device realizes that they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted,
Alternatively, they can be realized with the executable program code of computing device, it is thus possible to be stored in storage device
In performed by computing device, and in some cases, can be to perform shown or described step different from order herein
Suddenly, they are either fabricated to each integrated circuit modules respectively or be fabricated to the multiple modules or step in them single
Integrated circuit modules are realized.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, etc.
With replacement, improvement etc., it should be included in the scope of the protection.
Claims (15)
1. a kind of data transmission method, it is characterised in that including：
The shared time slot on the dedicated time slot and the unauthorized carrier wave on the unauthorized carrier wave of base station distribution is determined, its
In, the dedicated time slot is used for user equipment (UE) and carries out device-to-device D2D data transfers, the shared time slot
The D2D data transfers are carried out for the two or more UE including the UE；
The D2D data transfers are carried out using the dedicated time slot and the shared time slot.
2. according to the method described in claim 1, it is characterised in that on the unauthorized carrier wave for determining the base station distribution
The dedicated time slot and the unauthorized carrier wave on the shared time slot include：
The request message that request carries out uplink scheduling is sent to the base station；
Determine the ascending resource that the base station is distributed according to the request message；
Using the ascending resource by for controlling the control information of the D2D data transfers to be sent to the base station；
Determine the dedicated time slot and the shared time slot distributed according to the control information base station.
3. method according to claim 2, it is characterised in that will be used to control the D2D using the ascending resource
The control information of data transfer, which is sent to the base station, to be included：
The control information is sent to by institute by device-to-device transmission report D2D TR using the ascending resource
Base station is stated, wherein, the D2D TR are to be protected according to Logic Channel Identifier LCID in Uplink Shared Channel UL-SCH
The D2D data transfers report instruction that the expansible field stayed is determined, the report, which is instructed, includes data type, excellent
First level, transmitting terminal numbering, receiving terminal numbering, data and cyclic check position.
4. according to the method described in claim 1, it is characterised in that carried out using the dedicated time slot and the shared time slot
The D2D data transfers include：
The D2D data are transmitted using the dedicated time slot；
It is remaining using the shared slot transmission when not transferring the D2D data using the dedicated time slot
The D2D data not transferred.
5. method according to claim 4, it is characterised in that transmit the D2D packets using the dedicated time slot
Include：
Clear channel assessment (CCA) CCA detections are carried out on the dedicated time slot；
When it is the free time that testing result, which is the dedicated time slot, the D2D data are transmitted using the dedicated time slot.
6. method according to claim 4, it is characterised in that do not transferred using the shared slot transmission is remaining
The D2D data include：
Clear channel assessment (CCA) CCA detections are carried out on the shared time slot；
When it is the free time that testing result, which is the shared time slot, do not transferred using the shared slot transmission is remaining
The D2D data；
When testing result is that the shared time slot is busy, waits and carry out CCA detections after the scheduled time again, and
When detecting the shared time slot for the free time, the remaining D2D not transferred of the shared slot transmission is utilized
Data.
7. method according to any one of claim 1 to 6, it is characterised in that the dedicated time slot and/or described
The least unit of communication frame where shared time slot is small resource block MRB, wherein, a MRB is wrapped in time domain
Containing 14 orthogonal frequency division multiplex OFDM symbols, time domain size is two time slots；It is continuous comprising 12 on frequency domain
Subcarrier, frequency domain size be 180kHz.
8. a kind of data transmission method, it is characterised in that including：
The shared time slot distributed on the dedicated time slot on unauthorized carrier wave and the unauthorized carrier wave, wherein, it is described special
Device-to-device D2D data transfers are carried out for user equipment (UE) with time slot, the shared time slot is used to include institute
State the two or more UE progress D2D data transfers including UE；
The UE is given by the dedicated time slot and the shared time slot notification.
9. method according to claim 8, it is characterised in that the dedicated time slot on the distribution unauthorized carrier wave
Include with the shared time slot on the unauthorized carrier wave：
Receive the request message for the request progress uplink scheduling that the UE is sent；
Ascending resource is distributed according to the request message and notifies the ascending resource of distribution to the UE；
Receive the control information for being used to control the D2D data transfers that the UE utilizes the ascending resource to send；
The dedicated time slot and the shared time slot are distributed according to the control information.
10. method according to claim 9, it is characterised in that receive what the UE was sent using the ascending resource
For controlling the control information of the D2D data transfers to include：
Receive the UE and the control that report D2D TR are sent is transmitted by device-to-device using the ascending resource
Information processed, wherein, the D2D TR are to be protected according to Logic Channel Identifier LCID in Uplink Shared Channel UL-SCH
The D2D data transfers report instruction that the expansible field stayed is determined, the report, which is instructed, includes data type, excellent
First level, transmitting terminal numbering, receiving terminal numbering, data and cyclic check position.
11. method according to claim 9, it is characterised in that according to the control information distribute the dedicated time slot and
The shared time slot includes：
Clear channel assessment (CCA) CCA detections are carried out on the unauthorized carrier wave；
After the unauthorized carrier wave free time is detected, the dedicated time slot is distributed and described according to the control information
Shared time slot.
12. method according to claim 8, it is characterised in that be used for the UE in distribution and carry out the D2D data
Dedicated time slot on the unauthorized carrier wave of transmission and carried out for the two or more UE including the UE described
After shared time slot on the unauthorized carrier wave of D2D data transfers, methods described also includes：
Clear channel assessment (CCA) CCA detections are carried out on the shared time slot；
It is more than when detecting the idle continuous time length of the shared time slot for the UE progress D2D numbers
According to transmission duration when, withdraw distribution the dedicated time slot and the shared time slot.
13. the method according to any one of claim 8 to 12, it is characterised in that the dedicated time slot and/or described
The least unit of communication frame where shared time slot is small resource block MRB, wherein, a MRB is wrapped in time domain
Containing 14 orthogonal frequency division multiplex OFDM symbols, time domain size is two time slots；It is continuous comprising 12 on frequency domain
Subcarrier, frequency domain size be 180kHz.
14. a kind of data transmission device, it is characterised in that including：
Determining module, the dedicated time slot and the unauthorized carrier wave on unauthorized carrier wave for determining base station distribution
Shared time slot, wherein, the dedicated time slot be used for user equipment (UE) carry out device-to-device D2D data transfers,
The two or more UE that the shared time slot is used for including the UE carries out the D2D data transfers；
Transport module, for carrying out the D2D data transfers using the dedicated time slot and the shared time slot.
15. a kind of data transmission device, it is characterised in that including：
Distribute module, for distributing the shared time slot on the dedicated time slot on unauthorized carrier wave and the unauthorized carrier wave,
Wherein, the dedicated time slot is used for user equipment (UE) progress device-to-device D2D data transfers, when described shared
The two or more UE that gap is used for including the UE carries out the D2D data transfers；
Notification module, for giving the UE by the dedicated time slot and the shared time slot notification.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114633.4A CN107135461A (en) | 2016-02-29 | 2016-02-29 | Data transmission method and device |
| PCT/CN2016/111494 WO2017148205A1 (en) | 2016-02-29 | 2016-12-22 | Data transmission method and apparatus |
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|---|---|---|---|
| CN201610114633.4A CN107135461A (en) | 2016-02-29 | 2016-02-29 | Data transmission method and device |
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| WO (1) | WO2017148205A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886788A (en) * | 2018-06-29 | 2018-11-23 | 北京小米移动软件有限公司 | Transmit method and apparatus, base station and the user equipment of information |
| WO2019129164A1 (en) * | 2017-12-29 | 2019-07-04 | 华为技术有限公司 | Transmission time processing method and related devices |
| WO2019137266A1 (en) * | 2018-01-12 | 2019-07-18 | 华为技术有限公司 | Method and device for transmitting indication information |
| CN110839228A (en) * | 2019-11-26 | 2020-02-25 | 郑州大学 | NB-IoT D2D communication method, terminal and system based on signaling monitoring |
| WO2020164439A1 (en) * | 2019-02-14 | 2020-08-20 | 索尼公司 | User equipment, network side device, wireless communication method and storage medium |
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| CN112075111B (en) * | 2018-05-09 | 2023-11-10 | 华为技术有限公司 | Uplink transmission resource allocation method and device |
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| CN113396633A (en) * | 2019-02-14 | 2021-09-14 | 索尼集团公司 | User equipment, network side equipment, wireless communication method and storage medium |
| CN113396633B (en) * | 2019-02-14 | 2024-04-16 | 索尼集团公司 | User equipment, network side equipment, wireless communication method and storage medium |
| WO2020199053A1 (en) * | 2019-03-29 | 2020-10-08 | Oppo广东移动通信有限公司 | Metho for determining contention window size (cws), and related product |
| US20220070918A1 (en) * | 2019-05-14 | 2022-03-03 | Huawei Technologies Co., Ltd. | Communication Method And Device |
| CN114246011A (en) * | 2019-08-13 | 2022-03-25 | 上海诺基亚贝尔股份有限公司 | Channel access procedure based on channel access priority class |
| WO2021026783A1 (en) | 2019-08-13 | 2021-02-18 | Nokia Shanghai Bell Co., Ltd. | Channel access procedure based on channel access priority class |
| CN110839228B (en) * | 2019-11-26 | 2022-11-15 | 郑州大学 | NB-IoT D2D communication method, terminal and system based on signaling monitoring |
| CN110839228A (en) * | 2019-11-26 | 2020-02-25 | 郑州大学 | NB-IoT D2D communication method, terminal and system based on signaling monitoring |
| CN111935834B (en) * | 2020-07-29 | 2023-08-15 | 北京升哲科技有限公司 | Data transmission method, device, computer equipment and storage medium |
| CN111935834A (en) * | 2020-07-29 | 2020-11-13 | 北京升哲科技有限公司 | Data sending method and device, computer equipment and storage medium |
| WO2022047750A1 (en) * | 2020-09-04 | 2022-03-10 | Oppo广东移动通信有限公司 | Lbt parameter determining method and apparatus, device and medium |
| CN115334488A (en) * | 2022-08-15 | 2022-11-11 | 煤炭科学技术研究院有限公司 | Mining mobile emergency communication system and method |
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