CN108633065A - Data transmission method for uplink and corresponding user equipment - Google Patents

Data transmission method for uplink and corresponding user equipment Download PDF

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Publication number
CN108633065A
CN108633065A CN201710316249.7A CN201710316249A CN108633065A CN 108633065 A CN108633065 A CN 108633065A CN 201710316249 A CN201710316249 A CN 201710316249A CN 108633065 A CN108633065 A CN 108633065A
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China
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pssch
single sub
rsrp
resource
pscch
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Granted
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CN201710316249.7A
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CN108633065B (en
Inventor
张世昌
李迎阳
王轶
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Priority to PCT/KR2018/003420 priority Critical patent/WO2018174630A1/en
Priority to US16/497,332 priority patent/US11324007B2/en
Publication of CN108633065A publication Critical patent/CN108633065A/en
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Publication of CN108633065B publication Critical patent/CN108633065B/en
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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
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The data transmission method for uplink and corresponding first UE that present disclose provides a kind of to execute at the first user equipment (UE).This method includes：The Bypass Control channel PSCCH that the 2nd UE is sent is detected on one or more carrier waves；The demodulation reference channel received power PSSCH RSRP of the 2nd UE are compensated according to the PSCCH detected on each carrier；Available candidate single sub-frame resource is determined according to the PSSCH RSRP after compensation on each carrier；And using on all carrier waves at least one of identified available candidate single sub-frame resource send bypass data channel PSSCH.The disclosure additionally provides the method and corresponding first UE that other two kinds execute at the first UE.

Description

Data transmission method for uplink and corresponding user equipment
Technical field
This disclosure relates to field of communication technology, specifically, this disclosure relates to a kind of for example in vehicle communicates extraneous V2X Data transmission method for uplink and corresponding user equipment.
Background technology
In the 3 gpp standards, equipment is known as bypassing (Sidelink) and uplink to the direct communication link between setting Road is similar with downlink, and there is also control channels and data channel in bypass, the former is known as Bypass Control channel (Physical Sidelink Control CHannel, referred to as PSCCH), the latter is known as bypass data channel (Physical Sidelink Shared CHannel are referred to as PSSCH).PSCCH is used to indicate the time-frequency domain resources position of PSSCH transmission, modulating-coding side The priority etc. of the data carried in formula and PSSCH, PSSCH is for carrying data.
Vehicle is to external world's communication (Vehicle to Vehicle/Perdestrian/Infrastructure/Network, letter Referred to as V2X) in control information and data can pass through bypass.V2X communications at this time include two kinds of transmission modes, that is, are transmitted Pattern 3 (Mode 3) and transmission mode 4 (Mode 4).For Mode 3, the PSCCH of a UE (system refers to V2X UE herein) It is distributed by the node B (evolved NodeB, referred to as eNB) of evolution with the transmission resource of PSSCH, UE is logical by receiving eNB The bypass resource distribution instruction that PDCCH or EPDCCH is sent is crossed to determine the transmission resource of PSCCH and PSSCH.And in Mode 4 In, the transmission resource of PSCCH and PSSCH are independently selected by UE according to channel detection result.If the UE using Mode 4 exists Subframe n in the presence of need to send V2X data (i.e. the time of V2X data packets arrival UE radio access layers be not later than subframe n) and Meet resource selection or the condition of gravity treatment, then the running time-frequency resource in resource selection window [n+T1, n+T2] is considered as candidate list by UE Frame resource (value of T1 and T2 are realized by UE and determined, but needs to meet T1≤4,20≤T2≤100), then UE is in resource selection window Interior determining available candidate single sub-frame resource.During determining available candidate single sub-frame resource, UE is first by receiving other The PSCCH that UE is sent determines running time-frequency resource position and the priority of scheduled PSSCH, and then further detection is scheduled The demodulation reference channel received power (PSSCH-RSRP) of PSSCH, and PSSCH-RSRP is excluded higher than the resource of predetermined threshold (hereinafter referred resource selection step 2)；UE then calculates the average received energy (S-RSSI) of surplus resources, and S-RSSI is minimum The single sub-frame resource of X% is available candidate single sub-frame resource (hereinafter referred resource selection step 3).It is marked in 3GPP Rel-14 In standard, the value of X is 20.Specified otherwise is needed, the X%, which accounts for for available candidate single sub-frame resource in resource selection window, to be owned The ratio of single sub-frame resource.UE will randomly choose a resource as transmission resource in available candidate single sub-frame resource.
In the 3GPP standards of 3GPP Rel-14, the minimum data transmission delay that V2X communications can be supported is 20ms.So And this time delay can not meet the needs of all application scenarios during vehicle communicates the external world.For example, in automatic running fleet (Platooning) in application scenarios, the transmission delay of partial data packet requires to be 10ms.For this purpose, the UE of Mode 4 is selected in resource Select or reuse adoption process in when determining resource selection window, the minimum value of T2 should be not more than 10, to ensure the resource of selection and hold The interval at row resource selection or gravity treatment moment is no more than the delay requirement that data are sent.However, existing simultaneously if there is multiple UE Subframe n executes resource selection or gravity treatment, and the resource selection window of diminution increases the possibility for causing UE to select same asset, to Lead to the decline of V2X system performances.
In addition, multi-antenna technology is not yet used in current V2X communications, so the V2X equipment of 3GPP Rel-14 (is known as First kind V2X UE) it is sent only with single antenna.However, in order to further increase the data receiver success rate in V2X communications, it is more Antenna technology is very important selection.In order to ensure backwards compatibility (such as so that first kind V2X UE and LTE Rel-15 Or the V2X equipment of later release (is known as the second class V2X UE, multiple antennas both may be used and sent and single antenna can also be used to send out Send) coexist), in the next evolution processes of V2X, using multiple antennas send the second class V2X UE may with only with list The UE (including first kind V2X UE and the second class V2X UE using single antenna transmission) that antenna is sent is operated in identical resource In pond.But when UE is sent using multiple antennas, the transmission power of each transmission antenna will be less than when a single antenna is sent Transmission power.According to the channel sensitive manner of current 3GPP Rel-14UE, the second class V2X UE for being sent using multiple antennas are by the The PSSCH-RSRP that a kind of V2X UE are detected also than under same state use single antenna send UE (including using single antenna send out The first kind V2X UE and the second class V2X UE sent) PSSCH-RSRP that is detected is low, it is sent so as to cause using multiple antennas The resource of the second class V2X UE be easier to be seized by first kind V2X UE, it is final to influence multi-antenna technology performance in V2X communications Performance.
It can see by analyzing above, if to support the more stringent application of delay requirement while improve V2X communications In data receiver success rate, it is necessary to reduce V2X communication in minimum data transmission delay, and using multiple antennas send skill Art.However, problems caused by thus, at present still without ideal solution.
Invention content
To solve the above-mentioned problems, the present disclosure proposes the second class V2X UE's that multiple antennas transmission is used by compensation PSSCH-RSRP is come the occupied possibility of resource that reduces this UE.
Specifically, according to the first scheme of the disclosure, a kind of data hair executed at the first user equipment (UE) is provided Delivery method, this method execute at the first user equipment (UE).This method includes：Second is detected on one or more operating carriers The Bypass Control channel PSCCH that UE is sent；Demodulation on each operating carriers according to the PSCCH detected to the 2nd UE Reference channel receives power P SSCH-RSRP and compensates；It is determined according to the PSSCH-RSRP after compensation on each operating carriers Available candidate single sub-frame resource；And using in identified available candidate single sub-frame resource on one or more operating carriers It is at least one to send bypass data channel PSSCH.
In some embodiments, the PSCCH detected includes following at least with the next item down：2nd UE uses multiple antennas The instruction of transmission；Or the instruction of PSSCH-RSRP compensation is carried out to the 2nd UE.
In some embodiments, available candidate single sub-frame resource packet on one or more carrier waves is determined according to comparison result It includes：Determine that the single sub-frame resource of special ratios in resource selection window on each carrier wave is available candidate single sub-frame resource.
In some embodiments, bypass count is sent using at least one of identified available candidate single sub-frame resource It is believed that road PSSCH includes：Select the initial index value m of modulation coding scheme MCS；Based on min (m+d, 28) or min (m+d, 31) The index value m ' for determining effective MCS is determined according to m ' and scheduled MCS index values and the mapping ruler of transport block size index and is passed Defeated block size index, and order of modulation, wherein d are determined according to m ' and scheduled MCS index values and the mapping ruler of order of modulation Value by base station configure or be pre-configured；And it is waited in identified use according to determining transport block size index and order of modulation At least one of menu sub-frame resources are upper to send PSSCH.
In some embodiments, bypass data channel PSSCH is sent using identified available candidate single sub-frame resource Including：Select the initial index value m of modulation coding scheme MCS；According to m and scheduled MCS index values and transport block size index Mapping ruler determine transport block size index, and according to m and scheduled MCS index values and order of modulation mapping ruler, determine Order of modulation Q '；And it is sent in identified available candidate single sub-frame resource according to determining transport block size index and Q Data, wherein Q=max (4, Q ').
In some embodiments, the 2nd UE supports multiple antennas to send.
In some embodiments, available candidate list on one or more carrier waves is determined according to the PSSCH-RSRP after compensation Frame resource includes：PSSCH-RSRP after compensation is compared with predetermined threshold；And it is determined to use according to comparison result and be waited Menu sub-frame resources.
In some embodiments, the first UE and the 2nd UE is the vehicle pair directly communicated with each other by bypassing connection External world's communication V2X equipment.
According to the alternative plan of the disclosure, a kind of data transmission method for uplink executed at the first user equipment (UE) is provided, This method executes at the first user equipment (UE).This method includes：The side that the 2nd UE is sent is detected on one or more carrier waves Road control channel PSCCH；According to the PSCCH that detects predetermined threshold is adjusted on one or more carrier waves and incite somebody to action PSSCH-RSRP is compared with the predetermined threshold after adjustment；Available candidate single sub-frame on each carrier wave is determined according to comparison result Resource；And send bypass data channel PSSCH using at least one of identified available candidate single sub-frame resource.
In some embodiments, the PSCCH detected includes priority offset instruction, is used to indicate the 2nd UE and sends Offset between the priority that the practical priority of data and the data of the 2nd UE to be scheduled are sent, and according to inspection The PSCCH measured to predetermined threshold be adjusted including：Predetermined threshold is adjusted according to priority offset instruction.
In some embodiments, available candidate single sub-frame resource packet on one or more carrier waves is determined according to comparison result It includes：Determine that each carrier resource selects the single sub-frame resource of special ratios in window for available candidate single sub-frame resource.
In some embodiments, bypass count is sent using at least one of identified available candidate single sub-frame resource It is believed that road PSSCH includes：Select the initial index value m of modulation coding scheme MCS；Based on min (m+d, 28) or min (m+d, 31) The index value m ' for determining effective MCS is determined according to m ' and scheduled MCS index values and the mapping ruler of transport block size index and is passed Defeated block size index, and order of modulation, wherein d are determined according to m ' and scheduled MCS index values and the mapping ruler of order of modulation Value by base station configure or be pre-configured；And it is waited in identified use according to determining transport block size index and order of modulation At least one of menu sub-frame resources are upper to send PSSCH.
In some embodiments, bypass count is sent using at least one of identified available candidate single sub-frame resource It is believed that road PSSCH includes：Select the initial index value m of modulation coding scheme MCS；According to m and scheduled MCS index values and transmission The mapping ruler of block size index determines transport block size index, and is mapped with order of modulation according to m and scheduled MCS index values Rule determines order of modulation Q '；And it is provided in identified available candidate single sub-frame according to determining transport block size index and Q Transmission data on source, wherein Q=max (4, Q ').
In some embodiments, the 2nd UE supports multiple antennas to send.
In some embodiments, the first UE and the 2nd UE is the vehicle pair directly communicated with each other by bypassing connection External world's communication V2X equipment.
According to the third program of the disclosure, the data transmission method for uplink executed at the first user equipment (UE), the party are provided Method executes at the first user equipment (UE).This method includes：The bypass control that the 2nd UE is sent is detected on one or more carrier waves Channel PSCCH processed；PSSCH-RSRP is compensated and to predetermined threshold according to the PSCCH detected on each operating carriers Value is adjusted；The PSSCH-RSRP after compensation is compared with the predetermined threshold after adjustment on each operating carriers； Available candidate single sub-frame resource is determined according to comparison result on each operating carriers；And using on one or more operating carriers At least one of identified available candidate single sub-frame resource sends bypass data channel PSSCH.
In some embodiments, according to the PSCCH detected to PSSCH-RSRP compensate including：According to it is following at least One compensates PSSCH-RSRP：2nd UE uses the instruction that multiple antennas is sent；Or the 2nd UE is carried out The instruction of PSSCH-RSRP compensation.
In some embodiments, the PSCCH detected includes priority offset instruction, is used to indicate the 2nd UE and sends Offset between the priority that the practical priority of data and the data of the 2nd UE to be scheduled are sent, and according to inspection The PSCCH measured to predetermined threshold be adjusted including：Predetermined threshold is adjusted according to priority offset instruction.
According to the fourth program of the disclosure, the first user equipment (UE) is provided.First UE includes：Transceiver；Processor； And memory, computer executable instructions are stored with, the computer executable instructions make described when being executed by processor First UE executes the method according to any one of first scheme, alternative plan and third program.
According to the 5th scheme of the disclosure, a kind of computer storage media is provided, computer executable instructions are stored with. Computer executable instructions make the first UE execute according to first party when being executed by the processor of the first user equipment (UE) Method described in any one of case, alternative plan and third program.
According to above-described embodiment of the disclosure, the new UE that present disclose provides a kind of relative to first kind V2X UE is (as above Described, alternatively referred to as the second class V2X UE had both supported single antenna to send or multiple antennas are supported to send) and executed on the new UE Data transmission method for uplink, can with smaller standard change improve V2X communication systems performance.Specifically, new UE is according to one The the second class V2X UE's (for example, the second class V2X UE sent using multiple antennas) detected on a or multiple operating carriers PSCCH determines that the UE is sent using multiple antennas, is then compensated to the PSSCH-RSRP of the UE or compensation of equal value (adjusts true The predetermined threshold being compared with PSSCH-RSRP when determining available candidate resource), to reduce use multiple antennas to send the The occupied possibility of transmission resource of two class V2X UE.In addition, needing to subtract when the delay requirement of new UE transmission datas is smaller When small resource selection window, higher modulation coding scheme may be used to reduce required single sub-frame resource, using increase in new UE The ratio of possible candidate's single sub-frame resource, increases available candidate in resource selection window using modes such as multi-carrier resource selections Single sub-frame resource quantity, to avoid the possibility of same asset is selected between different UE.
Description of the drawings
The disclosure is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, wherein：
Fig. 1 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 100 schematic flow chart；
Fig. 2 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 200 schematic flow chart；
Fig. 3 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 300 schematic flow chart；
Fig. 4 shows the schematic stream of the data transmission method for uplink 400 executed at the first UE according to the embodiment of the present disclosure Cheng Tu；
Fig. 5 shows the schematic stream of the data transmission method for uplink 500 executed at the first UE according to the embodiment of the present disclosure Cheng Tu；
Fig. 6 shows the structural schematic diagram of the UE 600 according to the embodiment of the present disclosure.
Specific implementation mode
Embodiment of the disclosure is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the disclosure, and cannot be construed to the limitation to the disclosure.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the disclosure arranges It refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition to take leave " comprising " Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange Diction "and/or" includes that the whole of one or more associated list items or any cell are combined with whole.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art Language and scientific terminology), there is meaning identical with the general understanding of the those of ordinary skill in disclosure fields.Should also Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art The consistent meaning of meaning, and unless by specific definitions as here, the meaning of idealization or too formal otherwise will not be used To explain.
It includes wireless signal that those skilled in the art of the present technique, which are appreciated that " user equipment " used herein above, " UE " both, The equipment of receiver only has the equipment of the wireless signal receiver of non-emissive ability, and includes receiving and emitting hardware Equipment has the reception that on bidirectional communication link, can carry out two-way communication and emits the equipment of hardware.This equipment can To include：Honeycomb or other communication equipments with single line display or multi-line display or do not have multi-line display Honeycomb or other communication equipments；PCS (Personal Communications Service, PCS Personal Communications System), can be with Combine voice, data processing, fax and/or communication ability；PDA (Personal Digital Assistant, a number Word assistant), may include radio frequency receiver, pager, the Internet/intranet access, web browser, notepad, calendar And/or GPS (Global Positioning System, global positioning system) receiver；Conventional laptop and/or hand held Computer or other equipment, have and/or the conventional laptop including radio frequency receiver and/or palmtop computer or other Equipment." user equipment " used herein above, " UE " can be portable, can transport, be mounted on the vehicles (aviation, sea-freight And/or land) in, or be suitable for and/or be configured in local runtime, and/or with distribution form, operate in the earth and/ Or any other position operation in space." user equipment " used herein above, " UE " can also be communication terminal, online eventually End, music/video playback terminal, such as can be PDA, MID (Mobile Internet Device, mobile internet device) And/or the mobile phone with music/video playing function, can also be the equipment such as smart television, set-top box.
For the application for supporting delay requirement more stringent and improve data receiver success rate, it is necessary to further decrease The minimal time delay of V2X systems support simultaneously further supports multiple antennas transmission technology.In this case, in order to avoid between different UE The increase of the resource collision probability of (such as between first kind V2X UE and the second class V2X UE sent using multiple antennas) is dropped simultaneously The possibility that the resource of low the second class V2X UE sent using multiple antennas is seized by backward UE (such as first kind V2X UE), this It is open to propose a kind of direct communication method.
Fig. 1 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 100 schematic flow chart.First UE can carry out direct communication with the 2nd UE, and the first UE and the 2nd UE can for example be passed through The V2X equipment that bypass connection directly communicates with each other, that is, V2X UE.It, both can be with for example, the first UE can be the second class V2X UE Being sent using single antenna can also use multiple antennas to send.Below by by taking the scene that V2X is communicated as an example to the exemplary reality of the disclosure It applies example to be described, it should be understood, however, that method 100 can be applied to the direct communication between any two UE.
In step S110, the first UE detects the Bypass Control channel PSCCH of the 2nd UE transmissions on one or more carrier waves. The PSCCH detected can include the information such as the priority of the 2nd UE transmission datas and the resource reservation interval of the 2nd UE.
In one exemplary embodiment, UE can detect the PSCCH of the 2nd UE transmissions only on a carrier wave, if UE Only there are one optional carrier waves, then the carrier wave is the current operating carriers of UE.
Conversely, the carrier wave is selected by UE in multiple optional carrier waves.A kind of optional mode is that the carrier wave can be existed by UE The multiple optional carrier wave equal probability random selection.A kind of optional mode is that the carrier wave is specifically general according to carrier wave by UE Rate Pc random selections, wherein Pc are the probability that UE selects carrier wave c, and preferably, Pc is the channel occupancy ratio (CBRc) on carrier wave c With the function of the CBR on the multiple optional carrier wave, for example,N is the number of the optional carrier wave, CBRi For the CBR, c=0,1 on i-th of carrier wave, 2 ... N-1.Another optional mode is that the carrier wave is by UE the multiple The random selection of m carrier wave equal probability or the carrier wave that CBR is minimum in optional carrier wave are the minimum carrier waves of CBR, wherein 1≤m ≤ N, UE are indicated by receiving the signaling of eNB, are pre-configured or standard defines the value of determining m.
In one exemplary embodiment, UE can detect the 2nd UE transmissions on each carrier wave of all optional carrier waves PSCCH.
In one exemplary embodiment, the PSCCH detected includes：2nd UE uses the instruction that multiple antennas is sent；Or The 2nd UE of person couple carries out the instruction of PSSCH-RSRP compensation.
The PSSCH-RSRP of the 2nd UE is compensated according to the PSCCH detected in step S120, the first UE. The PSCCH detected includes the instruction that the 2nd UE is sent using multiple antennas or carries out the finger of PSSCH-RSRP compensation to the 2nd UE In the case of showing, the first UE can compensate the PSSCH-RSRP of the 2nd UE.That is, being to use more days in the 2nd UE In the case of the second class V2X UE that line is sent, the first UE can compensate the PSSCH-RSRP of the 2nd UE.
Available candidate single sub-frame resource is determined according to comparison result in step S130, the first UE.
In one exemplary embodiment, step S130 may include：By the PSSCH-RSRP and predetermined threshold after compensation It is compared (step S131)；And available candidate single sub-frame resource (step S132) is determined according to comparison result.
Step S130 can according in existing standard resource selection step 2 and resource selection step 3 execute, main region It is not that PSSCH-RSRP is the PSSCH-RSRP after overcompensation.Specifically, can according to after compensation PSSCH-RSRP with The comparison result of predetermined threshold excludes corresponding single sub-frame resource.For example, PSSCH-RSRP can be higher than to the list of predetermined threshold Sub-frame resources exclude, and are then provided the single sub-frame resource of X% minimum S-RSSI in surplus resources as available candidate single sub-frame Source.
During resource selection step 2 and resource selection step 3 in existing standard, it is also necessary to which the first UE high levels indicate Information (referred to as high-rise instruction information).
High level indicates that information may include：One or more carrier waves of UE high levels selection determine available on each carrier The resource reservation interval P assumed when candidate single sub-frame resourcersvp_TX, on each carrier determine available candidate single sub-frame resource when It is assumed that the single sub-frame resource subchannel number L that includessubCH, on each carrier determine available candidate single sub-frame resource when assume Data send priority prioTXEtc. it is one or more in information.
Here single sub-frame resource (single-subframe resource) RX, yFor subframeOn with subchannel x be The L of pointsubCHA continuous subchannel, wherein y indicate subframeRelative indexing in resource pool.
If the first UE executes resource gravity treatment in subframe n, the first UE should be by resource selection window on one or more carrier waves [n+T1, n+T2] in range any one belong to the continuous L in the subframe of resource poolsubCHSub-channels are considered as candidate single sub-frame money Source, wherein T1And T2It is determined by UE realizations, and 0 ＜ T1≤ a, b≤T2≤c.First UE can be configured according to base station, is pre-configured Or standard defines to determine the value of a, b and c.Preferably, if Prsvp_TXLess than particular value, then the value of b should be not more than Prsvp_TX。 Remember that the sum of single sub-frame resource in single carrier wave is Mtotal, MtotalThe collection of a candidate's single sub-frame resource composition is combined into S, needs spy Very illustrate, M on different carrier wavestotalValue can be different.
Preferably, the L of high-rise instructionsubCHValue should be within particular range, the particular range is defined simultaneously by standard And it is configured by base station or is pre-configured.If Prsvp_TXIt is, for example, less than 20 less than particular value, the particular range is less than 3GPP L under same case defined in Rel-14subCHOptional range.
If Prsvp_TXIt is, for example, less than 20 less than particular value, if UE is current only to detect the 2nd UE hairs on a carrier wave The PSCCH sent, then finally determining that available candidate single sub-frame resource accounts for the ratio X% of all single sub-frame resources in resource selection window can With more than the value (20%) defined in 3GPP Rel-14, to lower the possibility that different UE select same assets.If UE works as It is preceding over a number of carriers detection the 2nd UE send PSCCH, then UE carrier wave c (c=0,1,2 ... N-1, N be UE it is current The variable number of selection) on finally determine that available candidate single sub-frame resource accounts for the ratios of all single sub-frame resources in resource selection window X% can be equal to 20% × Rc, and wherein Rc can be equal to 1,1/N or Pc, and the occurrence of Rc can be configured by eNB, be pre-configured, or Standard defines, so as to preferably balance available candidate resource quality and resource collision probability.
In step S140, the first UE bypass is sent using at least one of identified available candidate single sub-frame resource Data channel PSSCH.
If the UE current PSCCH for only detecting the 2nd UE on a carrier wave and sending, the first UE can it is identified can A single sub-frame resource is randomly choosed for sending PSSCH with candidate single sub-frame resource equal probability.
If the UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, according to a kind of realization method of the application, UE can finally determine that all available candidate single sub-frame resource equal probabilities randomly choose a single sub-frame money on all carrier waves Source is for sending PSSCH.
If the UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, according to another realization side of the application Formula, UE can select a carrier wave c (0≤c≤N-1) first in the multiple carrier wave, then the available candidate on carrier wave c Single sub-frame resource equal probability randomly chooses a single sub-frame resource for sending PSSCH.UE can be according to carrier wave particular probability It can be 1/N or Pc that Sc, which selects carrier wave c, wherein Sc, and occurrence can be configured by eNB, be pre-configured or standard defines；
If the UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, according to another realization side of the application Formula, UE is according to the channel quality of available candidate single sub-frame resource selects carrier wave c (0≤c≤N- on each carrier wave after Channel Detection 1), the channel quality of the available candidate single sub-frame resource can be at least one in following information：The available time of UE estimations UE in the occupancy available candidate single sub-frame resource of average S-RSSI in menu sub-frame resources, UE estimation per sub-channels is sent The priority of data, the every PSSCH-RSRP of the UE of sub-channels in the occupancys available candidate single sub-frame resource of UE estimations, UE estimates The resource reservation period of UE in the occupancy available candidate single sub-frame resource of meter per sub-channels, etc..Preferably, in order to support Operation is stated, at least one in above- mentioned information should be reported high level by UE physical layers.
MCS can be selected by the first UE in particular range.Here particular range is defined by standard, and is matched by base station It sets or is pre-configured.Preferably, if Prsvp_TXIt is, for example, less than 20 less than particular value, which is less than in 3GPP Rel-14 Define the optional range of the MCS under same case.Alternatively, the optional range of MCS is identical, but for the value of identical MCS, the first UE The order of modulation of use is higher than the corresponding order of modulation of the MCS defined in 3GPP Rel-14.
In one exemplary embodiment, step S140 includes：Select modulation coding scheme MCS index values m；Selection modulation The initial index value m of coding mode MCS；The index value m ' of effective MCS, root are determined based on min (m+d, 28) or min (m+d, 31) Determine transport block size index according to m ' and scheduled MCS index values and the mapping ruler of transport block size index, and according to m ' and Scheduled MCS index values and the mapping ruler of order of modulation determine that order of modulation, the wherein value of d are configured or are pre-configured by base station； And it is sent in identified available candidate single sub-frame resource according to determining transport block size index and order of modulation PSSCH。
In another exemplary embodiment, step S140 includes：Select the initial index value m of modulation coding scheme MCS； Determine transport block size index according to m and scheduled MCS index values and the mapping ruler of transport block size index, and according to m and Scheduled MCS index values and order of modulation mapping ruler, determine order of modulation Q '；And according to determining transport block size index With Q in identified available candidate single sub-frame resource transmission data, wherein Q=max (4, Q ').
Fig. 2 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 200 schematic flow chart.First UE can carry out direct communication with the 2nd UE, and the first UE and the 2nd UE can for example be passed through The V2X equipment that bypass connection directly communicates with each other, that is, V2X UE.It, both can be with for example, the first UE can be the second class V2X UE Being sent using single antenna can also use multiple antennas to send.Below by by taking the scene that V2X is communicated as an example to the exemplary reality of the disclosure It applies example to be described, it should be understood, however, that method 200 can be applied to the direct communication between any two UE.
In step S210, the first UE detects the Bypass Control channel PSCCH of the 2nd UE transmissions on one or more carrier waves. The PSCCH detected can include the information such as the priority of the 2nd UE transmission datas and the resource reservation interval of the 2nd UE.
In one exemplary embodiment, UE can detect the PSCCH of the 2nd UE transmissions only on a carrier wave, if UE Only there are one optional carrier waves, then the carrier wave is the current operating carriers of UE.
Conversely, the carrier wave is selected by UE in multiple optional carrier waves.A kind of optional mode is that the carrier wave can be existed by UE The multiple optional carrier wave equal probability random selection.A kind of optional mode is that the carrier wave is specifically general according to carrier wave by UE Rate Pc random selections, wherein Pc are the probability that UE selects carrier wave c, and preferably, Pc is the channel occupancy ratio (CBRc) on carrier wave c With the function of the CBR on the multiple optional carrier wave, for example,N is the number of the optional carrier wave, CBRi For the CBR, c=0,1 on i-th of carrier wave, 2 ... N-1.Another optional mode is that the carrier wave is by UE the multiple The random selection of m carrier wave equal probability or the carrier wave that CBR is minimum in optional carrier wave are the minimum carrier waves of CBR, wherein 1≤m ≤ N, UE are indicated by receiving the signaling of eNB, are pre-configured or standard defines the value of determining m.
In one exemplary embodiment, UE can detect the 2nd UE transmissions on each carrier wave of all optional carrier waves PSCCH.
Predetermined threshold is adjusted according to the PSCCH detected in step S220, the first UE.
In one exemplary embodiment, the PSCCH detected includes priority offset instruction.Priority offset instruction The practical priority for being used to indicate the 2nd UE transmission datas and the data of the 2nd UE to be scheduled send preferential Offset between grade.Correspondingly, step S220 may include being adjusted to predetermined threshold according to priority offset instruction.
PSSCH-RSRP is compared with the predetermined threshold after adjustment in step S230, the first UE.
Step S230 is similar with step S131, can equally be executed according to the resource selection step 2 in existing standard.This The main distinction of two steps is, the PSSCH-RSRP in step S131 be through overcompensation, and it is predetermined in step S230 Threshold value is adjusted.That is, step S131 is direct compensation PSSCH-RSRP, and step S230 is by adjusting pre- Determine threshold value and carrys out compensation PSSCH-RSRP of equal value.So adjustment is determined that the mode of predetermined threshold when available candidate resource also may be used To be known as the equivalence compensation for PSSCH-RSRP.
Available candidate single sub-frame resource is determined according to comparison result on each carrier in step S240, the first UE.Step S240 is similar with step S132, equally can according in existing standard resource selection step 2 and resource selection step 3 hold Row.Specifically, corresponding single sub-frame resource can be excluded according to comparison result.For example, can be by PSSCH-RSRP higher than predetermined The single sub-frame resource of threshold value excludes, then using the single sub-frame resource of X% minimum S-RSSI in surplus resources as available candidate Single sub-frame resource.If Prsvp_TXIt is, for example, less than 20 less than particular value, if UE is current only to detect the 2nd UE on a carrier wave The PSCCH of transmission then finally determines that available candidate single sub-frame resource accounts for the ratio X% of all single sub-frame resources in resource selection window The value (20%) defined in 3GPP Rel-14 can be more than, to lower the possibility that different UE select same asset.If UE Currently over a number of carriers detection the 2nd UE send PSCCH, then UE carrier wave (c=0,1,2 ... N-1, N be UE it is current The variable number of selection) the upper final ratios for determining available candidate single sub-frame resource and accounting for all single sub-frame resources in resource selection window of c Example X% can be equal to 20% × Rc, and wherein Rc can be equal to 1,1/N or Pc, and the occurrence of Rc can be configured by eNB, be pre-configured, Or standard definition, so as to preferably balance available candidate resource quality and resource collision probability.
In step S250, the first UE bypass is sent using at least one of identified available candidate single sub-frame resource Data channel PSSCH.Step S250 and the realization of step S140 are essentially identical.
In one exemplary embodiment, step S250 includes：Select the initial index value m of modulation coding scheme MCS；Base The index value m ' of effective MCS is determined in min (m+d, 28) or min (m+d, 31), according to m ' and scheduled MCS index values and transmission The mapping ruler of block size index determines transport block size index, and according to m ' and scheduled MCS index values and order of modulation Mapping ruler determines that order of modulation, the wherein value of d are configured or are pre-configured by base station；And according to determining transport block size index With order of modulation PSSCH is sent in identified available candidate single sub-frame resource.
In another exemplary embodiment, step S250 includes：Select the initial index value m of modulation coding scheme MCS； Determine transport block size index according to m and scheduled MCS index values and the mapping ruler of transport block size index, and according to m and Scheduled MCS index values and order of modulation mapping ruler, determine order of modulation Q '；And according to determining transport block size index With Q in identified available candidate single sub-frame resource transmission data, wherein Q=max (4, Q ').
Fig. 3 shows the data transmission method for uplink executed at the first user equipment (UE) according to disclosure exemplary embodiment 300 schematic flow chart.First UE can carry out direct communication with the 2nd UE, and the first UE and the 2nd UE can for example be passed through The V2X equipment that bypass connection directly communicates with each other, that is, V2X UE.It, both can be with for example, the first UE can be the second class V2X UE Being sent using single antenna can also use multiple antennas to send.Below by by taking the scene that V2X is communicated as an example to the exemplary reality of the disclosure It applies example to be described, it should be understood, however, that method 300 can be applied to the direct communication between any two UE.
In step S310, the first UE detects the Bypass Control channel PSCCH of the 2nd UE transmissions on one or more carrier waves. The PSCCH detected can include the information such as the priority of the 2nd UE transmission datas and the resource reservation interval of the 2nd UE.
In one exemplary embodiment, UE can detect the PSCCH of the 2nd UE transmissions only on a carrier wave, if UE Only there are one optional carrier waves, then the carrier wave is the current operating carriers of UE.
Conversely, the carrier wave is selected by UE in multiple optional carrier waves.A kind of optional mode is that the carrier wave can be existed by UE The multiple optional carrier wave equal probability random selection.A kind of optional mode is that the carrier wave is specifically general according to carrier wave by UE Rate Pc random selections, wherein Pc are the probability that UE selects carrier wave c, and preferably, Pc is the channel occupancy ratio (CBRc) on carrier wave c With the function of the CBR on the multiple optional carrier wave, for example,N is the number of the optional carrier wave, CBRi For the CBR, c=0,1 on i-th of carrier wave, 2 ... N-1.Another optional mode is that the carrier wave is by UE the multiple The random selection of m carrier wave equal probability or the carrier wave that CBR is minimum in optional carrier wave are the minimum carrier waves of CBR, wherein 1≤m ≤ N, UE are indicated by receiving the signaling of eNB, are pre-configured or standard defines the value of determining m.
In one exemplary embodiment, UE can detect the 2nd UE transmissions on each carrier wave of all optional carrier waves PSCCH.
In one exemplary embodiment, the PSCCH detected includes：2nd UE uses the instruction that multiple antennas is sent；Or The 2nd UE of person couple carries out the instruction of PSSCH-RSRP compensation.Alternatively, the PSCCH detected can also include that priority offset refers to Show.
In step S320, the first UE is according to the PSCCH detected to the demodulation reference channel received power of the 2nd UE PSSCH-RSRP is compensated and is adjusted to predetermined threshold.
In one exemplary embodiment, the first UE can be according to the 2nd UE instructions sent using multiple antennas or to the Two UE carry out the instruction of PSSCH-RSRP compensation to be compensated to the PSSCH-RSRP of the 2nd UE.That is, in the 2nd UE In the case of using the second class V2X UE of multiple antennas transmission, the first UE can mend the PSSCH-RSRP of the 2nd UE It repays.
In another exemplary embodiment, the first UE can deviate instruction according to priority and be adjusted to predetermined threshold It is whole.
The PSSCH-RSRP after compensation is compared with the predetermined threshold after adjustment in step S330, the first UE.
Step S330 is similar with step S131 and S230, equally can be according to the resource selection step 2 in existing standard It executes.The main distinction is that the PSSCH-RSRP in step S330 is through overcompensation, while the predetermined threshold in step S330 It is adjusted.That is, step S330 should direct compensation PSSCH-RSRP, again by adjusting predetermined threshold carry out Equivalence compensation.
Available candidate single sub-frame resource is determined according to comparison result on each carrier in step S340, the first UE.Step S340 is similar with step S132 and S240, and details are not described herein again.
In one exemplary embodiment, step S340 includes：If Prsvp_TXIt is, for example, less than 20, such as less than particular value The current PSCCH for only detecting the 2nd UE on a carrier wave and sending of fruit UE, then finally determine that available candidate single sub-frame resource accounts for money Source selects the ratio X% of all single sub-frame resources in window that can be more than the value (20%) defined in 3GPP Rel-14, to lower The possibility of different UE selections same assets.If currently the PSCCH of the 2nd UE of detection transmissions, UE's UE exist over a number of carriers Carrier wave c (c=0,1,2 ... N-1, N are the variable numbers that currently select of UE) on finally determine available candidate single sub-frame resource Account for all single sub-frame resources in resource selection window ratio X% can be equal to 20% × Rc, wherein Rc can be equal to 1,1/N or The occurrence of Pc, Rc can be configured by eNB, be pre-configured or standard defines, so as to preferably balance available candidate resource matter Amount and resource collision probability..
In step S350, the first UE bypass is sent using at least one of identified available candidate single sub-frame resource Data channel PSSCH.Step S350 and the realization of step S140 and S250 are essentially identical.
In one exemplary embodiment, step S350 includes：Select the initial index value m of modulation coding scheme MCS；Base The index value m ' of effective MCS is determined in min (m+d, 28) or min (m+d, 31), according to m ' and scheduled MCS index values and transmission The mapping ruler of block size index determines transport block size index, and according to m ' and scheduled MCS index values and order of modulation Mapping ruler determines that order of modulation, the wherein value of d are configured or are pre-configured by base station；And according to determining transport block size index With order of modulation PSSCH is sent in identified available candidate single sub-frame resource.
In another exemplary embodiment, step S350 includes：Select the initial index value m of modulation coding scheme MCS； Determine transport block size index according to m and scheduled MCS index values and the mapping ruler of transport block size index, and according to m and Scheduled MCS index values and order of modulation mapping ruler, determine order of modulation Q '；And according to determining transport block size index With Q in identified available candidate single sub-frame resource transmission data, wherein Q=max (4, Q ').
According to the above method 100, method 200 or method 300, the first UE bases on one or more carrier waves detect PSCCH determines whether the 2nd UE is sent using multiple antennas, or obtains PSSCH-RSRP compensation instructions, and the 2nd UE then is being determined In the case of being sent using multiple antennas or in the case of obtaining PSSCH-RSRP compensation instructions, dropped by PSSCH-RSRP compensation Low first UE selects the possibility of the 2nd occupied resources of UE.In addition, when the first UE transmission datas delay requirement it is smaller and When needing to reduce resource selection window, higher modulation coding scheme may be used to reduce required single sub-frame resource in the first UE, Using modes such as the ratios for increasing possible candidate single sub-frame resource, increase available candidate single sub-frame number of resources in resource selection window Amount finally avoids the possibility of selection same asset between different UE.Due to having no need to change first kind V2X UE, the above method 100 Or 200 can with smaller standard change improve V2X communication systems performance.
For the ease of understanding the disclosure, with reference to concrete application situation, with the pattern of equipment room interaction to the disclosure Above-mentioned technical proposal is described further specific as follows：
Embodiment one
According to the present embodiment, the first UE can determine whether pair on one or more carrier waves according to the PSCCH that detects The PSSCH-RSRP for sending the 2nd UE of the PSCCH is compensated or compensation of equal value, and then according to the PSSCH-RSRP after compensation Determine available candidate single sub-frame resource.Preferably, it is only grasped when just execution is following in the specific resources pond of UE work eNB configurations Make, for example, the specific resources pond is the transmission resource pool for being allocated to 3GPP version 14Mode 3UE.
Fig. 4 shows the schematic stream of the data transmission method for uplink 400 executed at the first UE according to the embodiment of the present disclosure Cheng Tu.
PSCCH is detected on one or more carrier waves in step S410, the first UE, and is somebody's turn to do according to testing result to sending The PSSCH-RSRP of the 2nd UE of PSCCH is compensated or compensation of equal value.
In the present embodiment, UE can be detected only on a carrier wave the 2nd UE transmission PSCCH, if UE only there are one Optional carrier wave, then the carrier wave is the current operating carriers of UE.
Conversely, the carrier wave is selected by UE in multiple optional carrier waves.According to a kind of realization method of the present embodiment, the carrier wave It is randomly choosed in the multiple optional carrier wave equal probability by UE.According to another realization method of the present embodiment, the carrier wave by UE is randomly choosed according to the specific probability P c of carrier wave, and wherein Pc is the probability that UE selects carrier wave c, and preferably, Pc is on carrier wave c The function of channel occupancy ratio (CBRc) and the CBR on the multiple optional carrier wave, for example,N is described The number of optional carrier wave, CBRiFor the CBR, c=0,1 on i-th of carrier wave, 2 ... N-1.According to another of the present embodiment Realization method, the random selection of the carrier wave m carrier wave equal probability that the CBR in the multiple optional carrier wave is minimum by UE, or The carrier wave is the minimum carrier waves of CBR, wherein 1≤m≤N, UE are indicated by receiving the signaling of eNB, is pre-configured or standard definition is true Determine the value of m.
In the above manner, UE can be made with carrier wave low the probability selection CBR of bigger.
In the present embodiment, UE can also detect the 2nd UE transmissions on each carrier wave of all optional carrier waves PSCCH。
UE specifically still detects PSCCH over a number of carriers in a carrier wave, can be configured by eNB, is pre-configured, and standard is fixed Justice, or determined according to ad hoc rules by UE, the application is not further qualified.
Preferably, in the present embodiment, bit number that the bit field and each bit field that the PSCCH includes include and PSCCH formats 1 (SCI 1) at present defined in 3GPP Rel-14 are identical.
Preferably, if the 2nd UE is sent using multiple antennas, the value of the PSSCH-RSRP of the 2nd UE should be each hair The average value of the PSSCH-RSRP values measured on antennas port.Preferably, the 2nd UE is in each transmission antenna port On demodulated reference signal (DMRS) sequence it is identical, and the DMRS cyclic shifts on i-th of antenna port be mod (CS0+i* D, 12), wherein indicating CS0Indicate the cyclic shift of the DMRS on the 0th antenna port, CS0Method of determination and 3GPP Rel- Definition in 14 is identical.And the value of D is defined by standard, and configured or be pre-configured by base station, such as D=3.
According to the PSSCH-RSRP processing modes one of the present embodiment：
The PSCCH detected includes the instruction whether the 2nd UE uses multiple antennas to send.If the 2nd UE uses multiple antennas Sending method, then the PSSCH-RSRP of the first UE couples of the 2nd UE is compensated, or only uses single antenna sender in the first UE The PSSCH-RSRP of the first UE couples of the 2nd UE is compensated when formula.For example, if in reserved bit domain in the PSCCH detected Some or certain bits are 1, then it represents that the 2nd UE is using multiple antennas transmission.If the first UE is sent using single antenna, first The PSSCH-RSRP of UE couples of the 2nd UE compensates 3dB.Alternatively, the PSCCH detected can include for transmission antenna port number Directly or indirectly instruction.If the sending port number directly or indirectly indicated is N, in the PSSCH- for measuring the 2nd obtained UE 10 × log is compensated on the basis of RSRP10N dB。
Preferably, if the 2nd UE uses single antenna sending method, and the first UE uses multiple antennas sending method, then and the The PSSCH-RSRP of one UE couples of the 2nd UE carries out negative compensation.For example, if some in reserved bit domain in the PSCCH detected Or certain bits are 0, then it represents that the 2nd UE is sent using single antenna.If the first UE is sent using multiple antennas, the first UE pairs PSSCH-RSRP compensation-the 3dB of 2nd UE.Alternatively, the PSCCH detected can include for the direct of transmission antenna port number Or instruction indirectly.If the sending port number directly or indirectly indicated is N, in the PSSCH-RSRP for measuring the 2nd obtained UE On the basis of compensate -10 × log10N dB。
According to the PSSCH-RSRP processing modes two of the present embodiment：
The PSCCH detected includes whether to carry out PSSCH-RSRP compensation instructions to the 2nd UE.For example, PSCCH's is reserved Specific 2 or 1 bits in bit field can be used for PSSCH-RSRP compensation instructions.If it is 1 bit, 0 table can be used Show that it is 0dB not carry out PSSCH-RSRP compensation or compensation to the 2nd UE, can indicate the PSSCH-RSRP bases obtained in measurement with 1 3dB is compensated on plinth, or indicates to mend on the basis of measuring obtained PSSCH-RSRP when the first UE is sent using single antenna with 1 Repay 3dB.If it is 2 bits, can indicate that offset is such as 0dB respectively with state 00,01,10,11,3dB, 6dB and 9dB, or when the first UE is sent using single antenna with state 00,01,10,11 indicates that offset is such as 0dB, 3dB respectively, 6dB and 9dB.
According to the PSSCH-RSRP processing modes three of the present embodiment：
The practical priority of the 2nd UE transmission datas and the priority indicated in the PSCCH for dispatching the transmission data Between there are shifted by delta (for the value not less than zero), it is certain in the PSCCH which can be by dispatching the transmission data Specific bit indicates, is configured by eNB, or is pre-configured, and dispatches in addition in the PSCCH of the transmission data while indicating the 2nd UE Whether sent using multiple antennas.If the 2nd UE is sent using multiple antennas, when determining available candidate resource, the first UE pairs second The PSSCH-RSRP of UE carries out compensation of equal value, or only the first UE couples of the 2nd UE when the first UE uses single antenna sending method PSSCH-RSRP is compensated.Specifically, first predetermined threshold is adjusted with Δ, then when determining available candidate resource, The PSSCH-RSRP of 2nd UE is compared with adjusted predetermined threshold.PSSCH-RSRP processing modes three can be with PSSCH-RSRP processing modes one or PSSCH-RSRP processing modes two use simultaneously, in this case, first with Δ to predetermined Threshold value is adjusted, then when determining available candidate resource, by PSSCH-RSRPs of the 2nd UE after overcompensation with it is adjusted Predetermined threshold be compared.
Preferably, if the 2nd UE is sent using single antenna, when determining available candidate resource, if the first UE is using more Antenna is sent, and the PSSCH-RSRP of the first UE couples of the 2nd UE carries out negative compensation of equal value；Specifically, first predetermined threshold is carried out with Δ Adjustment, then when determining available candidate resource, the PSSCH-RSRP of the 2nd UE is compared with adjusted predetermined threshold.
PSSCH-RSRP processing modes three can be with PSSCH-RSRP processing modes one or PSSCH-RSRP processing modes two It uses, in this case, first predetermined threshold is adjusted with Δ simultaneously, then when determining available candidate resource, by PSSCH-RSRPs of two UE after overcompensation is compared with adjusted predetermined threshold.
According to the PSSCH-RSRP processing modes four of the present embodiment：
The PSCCH detected include the 2nd UE whether the instruction sent using multiple antennas, it is assumed that PSCCH included preferential The value in grade domain is prioRX, and it is prio that the data of the first UE indicated by the high-rise instruction information of the first UE, which send priority,TX, First UE is when determining available candidate resource by PSSCH-RSRP and predetermined thresholdIt is compared；If the first UE It is all made of single antenna sending method with the 2nd UE, thenIndicate the SL- defined in 3GPP standards 36.331V14.1.0 I-th of SL-ThresPSSCH-RSRP in ThresPSSCH-RSRP-List-r14；If the 2nd UE is sent using multiple antennas Mode and the first UE use single antenna sending method, thenIndicate SL-ThresPSSCH-RSRP-List-r15-1 In i-th of SL-ThresPSSCH-RSRP；If the 2nd UE using single antenna sending method and the first UE using multiple antennas send out Mode is sent, thenIndicate i-th of SL-ThresPSSCH- in SL-ThresPSSCH-RSRP-List-r15-2 RSRP；If the 2nd UE and the first UE are all made of multiple antennas sending method,Indicate SL-ThresPSSCH- I-th of SL-ThresPSSCH-RSRP in RSRP-List-r15-3, alternatively, indicating SL-ThresPSSCH-RSRP-List- I-th of SL-ThresPSSCH-RSRP in r14.Wherein i=prioTX*8+prioRX+ 1, SL-ThresPSSCH-RSRP- List-r15-1, SL-ThresPSSCH-RSRP-List-r15-2 and SL-ThresPSSCH-RSRP-List-r15-3 can be It is redefined in next version of 3GPP standards 36.331, moreover, SL-ThresPSSCH-RSRP-List-r15-1, SL- The structure and SL- of ThresPSSCH-RSRP-List-r15-2 and SL-ThresPSSCH-RSRP-List-r15-3 ThresPSSCH-RSRP-List-r14 is identical, is configured or is pre-configured by eNB, it is ensured that SL-ThresPSSCH-RSRP- List-r15-1, SL-ThresPSSCH-RSRP-List-r15-2, SL-ThresPSSCH-RSRP-List-r15-3 and SL- The value of i-th of SL-ThresPSSCH-RSRP is not exactly the same in ThresPSSCH-RSRP-List-r14.Need specified otherwise If the 2nd UE and the first UE are all made of multiple antennas sending method,Indicate SL-ThresPSSCH- I-th of SL-ThresPSSCH-RSRP in RSRP-List-r14 then may not need Additional definitions and configuration SL- ThresPSSCH-RSRP-List-r15-3。
If using PSSCH-RSRP processing modes one or PSSCH-RSRP processing modes two (that is, the PSCCH packets detected Carry out containing the 2nd UE instructions sent using multiple antennas or to the 2nd UE the instruction of PSSCH-RSRP compensation), it is assumed that PSCCH institutes Including Priority field value be prioRX, and the data of the first UE indicated by the high-rise instruction information of the first UE are sent preferentially Grade is prioTX, then the first UE when determining available candidate resource by the PSSCH-RSRP and predetermined threshold of the 2nd UE after compensationIt is compared.Indicate the SL-ThresPSSCH- defined in 3GPP standards 36.331V14.1.0 I-th of SL-ThresPSSCH-RSRP in RSRP-List-r14, wherein i=prioTX*8+prioRX+1。
If using PSSCH-RSRP processing modes three, it is assumed that the value for the Priority field for including in the PSCCH is prioRX, And it is prio that the data of the first UE indicated by the high-rise instruction information of the first UE, which send priority,TXIf the 2nd UE is using more Antenna sending method, then the first UE when determining available candidate resource by the PSSCH-RSRP of the 2nd UE with it is pre- after Δ adjusts Determine threshold valueIt is compared, alternatively, only when the first UE is sent using single antenna by the PSSCH- of the 2nd UE RSRP and the predetermined threshold after Δ adjustsIt is compared.Indicate 3GPP standards I-th of SL-ThresPSSCH-RSRP in SL-ThresPSSCH-RSRP-List-r14 defined in 36.331V14.1.0, Wherein i=prioTX*8+(prioRX-Δ)+1.In this case, for the 2nd UE, preferably, prioRX=prio 'RX+ Δ, Wherein prio 'RXIndicate the practical priority of the 2nd UE transmission datas.The value of Δ can be defined by the 2nd UE according to standard, and by Base station configures or is pre-configured and determines.Preferably, in this case, if the first UE using single antenna sending method the 2nd UE Using multiple antennas sending method, then the first UE adjusts the PSSCH-RSRP of the 2nd UE with through Δ when determining available candidate resource Predetermined threshold afterwardsIt is compared.
In other cases, the first UE does not compensate the PSSCH-RSRP of the 2nd UE or equivalence compensates or offset It is 0 with adjusting thresholds value (that is, Δ).First UE executes the phase that the mode of resource selection step 2 is defined with 3GPP Rel-14 standards Together, that is, assume that the value for the Priority field for including in the PSCCH is prioRX, and the number indicated by the high-rise instruction information of the first UE It is prio according to priority is sentTX, then the first UE when determining available candidate resource by the PSSCH-RSRP of the 2nd UE with it is predetermined Threshold valueIt is compared.Indicate the SL- defined in 36.331 V14.1.0 of 3GPP standards I-th of SL-ThresPSSCH-RSRP in ThresPSSCH-RSRP-List-r14, wherein i=prioTX*8+prioRX+1。
Determined on each carrier according to the compensation of step S410 or compensation result of equal value available in step S420, the first UE Candidate single sub-frame resource.
First UE can continue to execute resource selection step in the way of defined in 3GPP Rel-14 on each carrier 2, and further execute resource selection step 3.
In step S430, the first UE selects a single sub-frame resource to make in the available candidate single sub-frame resource of all carrier waves To send resource.
Embodiment two
According to the present embodiment, the first UE can be according to PSCCH couples of the 2nd UE's detected on one or more carrier waves PSSCH-RSRP is compensated or compensation of equal value.First UE judges whether to the mode of PSSCH-RSRP compensation or compensation of equal value Identical as step S410 with the method compensated or equivalence compensates, which is not described herein again.Alternatively, the first UE is always according to second The PSSCH-RSRP of UE executes resource selection step 2, i.e., is not mended under any circumstance to the PSSCH-RSRP of the 2nd UE It repays.And the first UE of data service is required for sending low time delay, such as delay requirement is less than 20, is determining available candidate resource When, the ratio of last remaining available candidate resource should be increased, to reduce the probability of resource collision.Preferably, only when UE works Make just to execute following operation in the specific resources pond of eNB configurations, for example, the specific resources pond is to be allocated to 3GPP versions The transmission resource pool of 14Mode 3UE.
Fig. 5 shows the schematic stream of the data transmission method for uplink 500 executed at the first UE according to the embodiment of the present disclosure Cheng Tu.
In step S510, the first UE detects the PSCCH of the 2nd UE transmissions on one or more carrier waves, determines the 2nd UE's PSSCH-RSRP。
UE determines that the mode of one or more of carrier waves and embodiment one are identical, and which is not described herein again.
First UE is defined according to standard and base station configuration or be pre-configured determine whether to the PSSCH-RSRP of the 2nd UE into Row compensation or compensation of equal value.
If the PSSCH-RSRP to the 2nd UE is needed to compensate by the first UE or equivalence compensates, the operation side of the first UE Formula is identical as step S410, and which is not described herein again.Conversely, the first UE always executes resource choosing according to the PSSCH-RSRP of the 2nd UE Select step 2.
Available candidate single sub-frame resource is determined on each carrier in step S520, the first UE, and on all carrier waves Select a resource as transmission resource in available candidate single sub-frame resource.
In the present embodiment, if the first UE always determines available candidate resource according to the PSSCH-RSRP of the 2nd UE, or If the first UE of person uses PSSCH-RSRP processing modes one or two in embodiment one, it is assumed that include in the PSCCH detected The value of Priority field is prioRX, and it is prio that the data indicated by the high-rise instruction information of the first UE, which send priority,TX, then One UE when determining available candidate resource, if meeting PSSCH-RSRP processing modes one or PSSCH-RSRP processing modes in To the condition that the PSSCH-RSRP of the 2nd UE is compensated, then by the PSSCH-RSRP and predetermined threshold of the 2nd UE after compensationIt is compared.Then, the first UE will be greater than the single sub-frame resource of the predetermined threshold and be excluded from set S.If Remaining resource is less than X% in set S, then the first UE willY dB are improved, re-execute above-mentioned relatively operation, directly It is not less than X% to remaining resource in S, orIncrease rate is more than (z high-amplitudes) dB.
In the present embodiment, if the first UE is using PSSCH-RSRP processing modes three in embodiment one, it is assumed that detect PSCCH in include Priority field value be prioRX, and the data indicated by the high-rise instruction information of the first UE are sent preferentially Grade is prioTX, then the first UE is when determining available candidate resource, if met in PSSCH-RSRP processing modes three to the 2nd UE PSSCH-RSRP carry out the condition of compensation of equal value, then by the PSSCH-RSRP of the 2nd UE and adjusted predetermined thresholdIt is compared.Indicate the SL- defined in 36.331 V14.1.0 of 3GPP standards I-th of SL-ThresPSSCH-RSRP in ThresPSSCH-RSRP-List-r14, wherein i=prioTX*8+(prioRX- Δ)+1.If remaining resource is less than X% in last set S, the first UE willY dB are improved, then again Above-mentioned relatively operation is executed, until remaining resource is not less than X% in S, orIncrease rate is more than (z high-amplitudes Degree) dB.Y is particular value, is defined by standard, base station configuration or pre-configuration.For example, if Prsvp_TXValue be less than 20, Y 2dB Or 1dB.Z is particular value, is defined by standard, and base station configuration or pre-configuration, such as z are equal to 3.
In the present embodiment, if the first UE is using PSSCH-RSRP processing modes three in embodiment one, it is assumed that detect PSCCH in include Priority field value be prioRX, and the data indicated by the high-rise instruction information of the first UE are sent preferentially Grade is prioTX, then the first UE is when determining available candidate resource, if met in PSSCH-RSRP processing modes three to the 2nd UE PSSCH-RSRP carry out the condition of compensation of equal value negative, then by the PSSCH-RSRP of the 2nd UE and the predetermined threshold after Δ adjustsIt is compared,Indicate the SL- defined in 36.331 V14.1.0 of 3GPP standards I-th of SL-ThresPSSCH-RSRP in ThresPSSCH-RSRP-List-r14, wherein i=(prioTX+Δ)*8+ prioRX+1.If remaining resource is less than X% in last set S, the first UE willY dB are improved, are then weighed Above-mentioned relatively operation is newly executed, until remaining resource is not less than X% in S, orIncrease rate is more than (z high-amplitudes Degree) dB.Y is particular value, is defined by standard, base station configuration or pre-configuration.For example, if Prsvp_TXValue be less than 20, Y 2dB Or 1dB.Z is particular value, is defined by standard, and base station configuration or pre-configuration, such as z are equal to 3.
In the present embodiment, if the first UE is using PSSCH-RSRP processing modes four in embodiment one, it is assumed that detect PSCCH in include Priority field value be prioRX, and the data indicated by the high-rise instruction information of the first UE are sent preferentially Grade is prioTX, then the first UE is when determining available candidate resource, by the PSSCH-RSRP and predetermined threshold of the 2nd UEIt is compared, the rule defined according to PSSCH-RSRP processing modes four in embodiment one and the first UE and the The sending method of two UE,Value indicate SL-ThresPSSCH-RSRP-List-r15-1, SL-ThresPSSCH- In RSRP-List-r15-2, SL-ThresPSSCH-RSRP-List-r15-3 or SL-ThresPSSCH-RSRP-List-r14 I-th of SL-ThresPSSCH-RSRP, wherein i=prioTX*8+prioRX+1.If remaining resource is small in last set S In X%, then the first UE willY dB are improved, above-mentioned relatively operation are then re-executed, until remaining resource in S Not less than X%, orIncrease rate is more than (z high-amplitudes) dB.Y is particular value, is defined by standard, base station configuration Or it is pre-configured.For example, if Prsvp_TXValue be less than 20, Y be 2dB or 1dB.Z is particular value, is defined by standard, base station configuration Or be pre-configured, such as z is equal to 3.
Preferably, it is assumed that the resource that the high-rise instruction information of the first UE assumes when including determining available candidate single sub-frame resource Prepared separation Prsvp_TXIf Prsvp_TXValue be less than 20, if UE is current only to detect what the 2nd UE was sent on a carrier wave PSCCH, then finally determining that available candidate single sub-frame resource accounts for the ratio X% of all single sub-frame resources in resource selection window can be big Value (20%) defined in 3GPP Rel-14, for example, 30% or 40%.Alternatively, X% can be 20/Prsvp_TX× 20%. Alternatively, X% can be the value of base station configuration or pre-configuration.By this mode, different UE selections same assets can be lowered Possibility.If UE currently over a number of carriers detection the 2nd UE send PSCCH, UE carrier wave c (c=0,1, 2 ... N-1, N are the variable numbers that currently select of UE) on finally determine that available candidate single sub-frame resource accounts for resource selection window The ratio X% of interior all single sub-frame resources can be equal to 20% × Rc, and wherein Rc can be equal to 1,1/N or Pc, the occurrence of Rc It can be configured by eNB, be pre-configured or standard defines, so as to preferably balance available candidate resource quality and resource collision Probability.
First UE should further execute resource selection step 3, the available candidate single sub-frame finally determined on each carrier The ratio of resource should be not less than min { X%, X ' % }, and wherein X ' % are to have executed remaining single sub-frame after resource selection step 2 Ratio shared by resource.
PSSCH is sent in the single sub-frame resource of selection according to determining modulation coding scheme in step S530, the first UE.
Embodiment three
According to the present embodiment, the step S530 in embodiment two may further include determining transport block size index (ITBS) and order of modulation, so that it is guaranteed that working as Prsvp_TXWhen less than 20, the MCS or order of modulation of the first UE is higher than under the same terms Prsvp_TXThe first UE not less than 20 may finally increase the single sub-frame resource number in resource selection window, reduce between different UE The possibility of resource collision.Preferably, only when the just following operation of execution in the specific resources pond of UE work eNB configurations, for example, The specific resources pond is the transmission resource pool for being allocated to 3GPP version 14Mode 3UE.
Lower mask body introduces transport block size index (ITBS) and order of modulation two example implementations.
In the first realization method, the first UE selects the initial index value m of MCS within the scope of the MCS that existing standard determines, Then min (m+d, 28) or min (m+d, 31) is used to determine the index value m ' of effective MCS, according to m ' and scheduled MCS index values The mapping ruler of (such as defined in current standard) and transport block size index determines transport block size index, and according to m ' Order of modulation is determined with the mapping ruler of scheduled MCS index values and order of modulation, and the wherein value of d is configured or prewired by base station It sets.
In the second realization method, the first UE selects the initial index value m of MCS within the scope of the MCS that existing standard determines, Then m and scheduled MCS index values (such as defined in current standard) and transport block size index (I are usedTBS) mapping rule It then determines transport block size index, and according to m and scheduled MCS index values and order of modulation mapping ruler, determines order of modulation Q ', finally according to determining ITBSWith Q in the single sub-frame resource of selection transmission data, wherein Q=max (4, Q ').
The structure of the UE according to the embodiment of the present disclosure is described hereinafter with reference to Fig. 6.Fig. 6 is shown according to the disclosure The structural schematic diagram of the UE 600 of embodiment.UE 600 can carry out direct communication with the 2nd UE, for example, the two may each be logical Cross the V2X equipment that bypass connection directly communicates with each other.For example, UE 600 can be the first UE as described above (either branch The the second class V2X UE for holding single antenna transmission can also be the second class V2X UE for supporting multiple antennas to send).2nd UE can be The the second class V2X UE for supporting multiple antennas to send.UE 600 can execute the method described with reference to figure 1-5.
As shown in fig. 6, UE 600 includes the transceiver 601 for PERCOM peripheral communication；Processing unit or processor 603, at this Reason device 603 can be the combination of individual unit or multiple units, the different step for executing method；Memory 605, wherein Computer executable instructions are stored with, described instruction makes UE 600 execute opposite with method 100 when being executed by processor 603 The following operation answered：The Bypass Control channel PSCCH that the 2nd UE is sent is detected on one or more carrier waves；On each carrier The demodulation reference channel received power PSSCH-RSRP of the 2nd UE is compensated according to the PSCCH detected；According to benefit PSSCH-RSRP after repaying determines available candidate single sub-frame resource；And via determination on all carrier waves of the utilization of transceiver 601 At least one of available candidate single sub-frame resource sends bypass data channel PSSCH.
In one exemplary embodiment, UE can detect the PSCCH of the 2nd UE transmissions only on a carrier wave, if UE Only there are one optional carrier waves, then the carrier wave is the current operating carriers of UE.
Conversely, the carrier wave is selected by UE in multiple optional carrier waves.A kind of optional mode is that the carrier wave can be existed by UE The multiple optional carrier wave equal probability random selection.A kind of optional mode is that the carrier wave is specifically general according to carrier wave by UE Rate Pc random selections, wherein Pc are the probability that UE selects carrier wave c, and preferably, Pc is the channel occupancy ratio (CBRc) on carrier wave c With the function of the CBR on the multiple optional carrier wave, for example,N is the number of the optional carrier wave, CBRi For the CBR, c=0,1 on i-th of carrier wave, 2 ... N-1.Another optional mode is that the carrier wave is by UE the multiple The random selection of m carrier wave equal probability or the carrier wave that CBR is minimum in optional carrier wave are the minimum carrier waves of CBR, wherein 1≤m ≤ N, UE are indicated by receiving the signaling of eNB, are pre-configured or standard defines the value of determining m.
In one exemplary embodiment, UE can detect the 2nd UE transmissions on each carrier wave of all optional carrier waves PSCCH.
In one exemplary embodiment, the PSCCH detected includes following at least with the next item down：2nd UE is used The instruction that multiple antennas is sent；Or the instruction of PSSCH-RSRP compensation is carried out to the 2nd UE.
In one exemplary embodiment, determine that available candidate single sub-frame resource includes according to comparison result：If UE works as Preceding is detected the PSCCH that the 2nd UE is sent on a carrier wave, it is determined that is more than 20% single sub-frame resource in resource selection window For available candidate single sub-frame resource, if the UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, UE is in carrier wave c It is upper final determine available candidate single sub-frame resource account for all single sub-frame resources in resource selection window ratio X% be equal to 20% × Rc, wherein Rc be equal to 1,1/N or Pc, c=0,1,2 ... N-1.
In one exemplary embodiment, bypass data channel is sent using identified available candidate single sub-frame resource PSSCH includes：Select the initial index value m of modulation coding scheme MCS；Had based on min (m+d, 28) or min (m+d, 31) determinations The index value m ' for imitating MCS, determines that transmission block is big according to m ' and scheduled MCS index values and the mapping ruler of transport block size index Small index, and order of modulation is determined according to m ' and scheduled MCS index values and the mapping ruler of order of modulation, the wherein value of d by Base station configures or is pre-configured；And according to determining transport block size index and order of modulation in identified available candidate list PSSCH is sent in frame resource.
In one exemplary embodiment, using in the identified available candidate single sub-frame resource on all carrier waves extremely Few one includes to send bypass data channel PSSCH：Select the initial index value m of modulation coding scheme MCS；According to m and in advance The mapping ruler of fixed MCS index values and transport block size index determines transport block size index, and according to m and scheduled MCS Index value and order of modulation mapping ruler, determine order of modulation Q '；And according to determining transport block size index and Q really Transmission data in fixed available candidate single sub-frame resource, wherein Q=max (4, Q ').
In one exemplary embodiment, available candidate single sub-frame resource packet is determined according to the PSSCH-RSRP after compensation It includes：PSSCH-RSRP after compensation is compared with predetermined threshold；And available candidate single sub-frame is determined according to comparison result Resource.
Memory 605 can also be stored with computer executable instructions, and described instruction makes when being executed by processor 603 UE 600 executes following operation corresponding with method 200：The bypass control that the 2nd UE is sent is detected on one or more carrier waves Channel PSCCH processed；According to the PSCCH that detects predetermined threshold is adjusted on each carrier and by PSSCH-RSRP with adjust Predetermined threshold after whole is compared；Available candidate single sub-frame resource is determined according to comparison result；And via 601 profit of transceiver With on all carrier waves at least one of identified available candidate single sub-frame resource send bypass data channel PSSCH.
In one exemplary embodiment, the PSCCH detected includes priority offset instruction, is used to indicate described second Offset between the priority that the practical priority of UE transmission datas and the data of the 2nd UE to be scheduled are sent, and According to the PSCCH detected to predetermined threshold be adjusted including：Predetermined threshold is adjusted according to priority offset instruction.
In one exemplary embodiment, determine that available candidate single sub-frame resource includes according to comparison result：If UE works as Preceding is detected the PSCCH that the 2nd UE is sent on a carrier wave, it is determined that is more than 20% single sub-frame resource in resource selection window For available candidate single sub-frame resource.If the UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, UE is in carrier wave c It is upper final determine available candidate single sub-frame resource account for all single sub-frame resources in resource selection window ratio X% be equal to 20% × Rc, wherein Rc be equal to 1,1/N or Pc, c=0,1,2 ... N-1.
In one exemplary embodiment, using in the identified available candidate single sub-frame resource on all carrier waves extremely Few one includes to send bypass data channel PSSCH：Select the initial index value m of modulation coding scheme MCS；Based on min (m+ D, 28) or min (m+d, 31) determines the index value m ' of effective MCS, according to m ' and scheduled MCS index values and transport block size rope The mapping ruler drawn determines transport block size index, and according to the mapping ruler of m ' and scheduled MCS index values and order of modulation Determine that order of modulation, the wherein value of d are configured or are pre-configured by base station；And according to determining transport block size index and modulation order Number sends PSSCH in identified available candidate single sub-frame resource.
In one exemplary embodiment, bypass data channel is sent using identified available candidate single sub-frame resource PSSCH includes：Select the initial index value m of modulation coding scheme MCS；According to m and scheduled MCS index values and transport block size The mapping ruler of index determines transport block size index, and according to m and scheduled MCS index values and order of modulation mapping ruler, Determine order of modulation Q '；And according to determining transport block size index and Q in identified available candidate single sub-frame resource Transmission data, wherein Q=max (4, Q ').
Memory 605 can also be stored with computer executable instructions, and described instruction makes when being executed by processor 603 UE 600 executes following operation corresponding with method 300：The side that the 2nd UE is sent is detected on one or more carrier waves Road control channel PSCCH；Work(is received to the demodulation reference channel of the 2nd UE according to the PSCCH detected on each carrier Rate PSSCH-RSRP is compensated and is adjusted to predetermined threshold；By after compensation PSSCH-RSRP and adjustment after it is predetermined Threshold value is compared；Available candidate single sub-frame resource is determined according to comparison result；And via transceiver 601 using in all loads At least one of identified available candidate single sub-frame resource sends bypass data channel PSSCH on wave.
In one exemplary embodiment, according to the PSCCH detected to PSSCH-RSRP compensate including：According to It is at least one of lower that PSSCH-RSRP is compensated：2nd UE uses the instruction that multiple antennas is sent；Or to the 2nd UE into The instruction of row PSSCH-RSRP compensation.
In one exemplary embodiment, the PSCCH detected includes priority offset instruction, is used to indicate described second Offset between the priority that the practical priority of UE transmission datas and the data of the 2nd UE to be scheduled are sent, and According to the PSCCH detected to predetermined threshold be adjusted including：Predetermined threshold is adjusted according to priority offset instruction.
The disclosure also provides at least one with non-volatile or form of volatile memory computer storage media, example Such as electrically erasable programmable read-only memory (EEPROM), flash memory and hard drive.Computer executable instructions are when by processor 603 make UE 600 execute the action for the process for for example combining Fig. 1-5 to describe before when executing.
Processor can be single cpu (central processing unit), but can also include two or more processors.Example Such as, processor may include general purpose microprocessor；Instruction set processor and/or related chip collection and/or special microprocessor (example Such as, application-specific integrated circuit (ASIC)).Processor can also include onboard storage device for cache purposes.For example, calculating Machine storage medium can be flash memory, random access memory (RAM), read-only memory (ROM) or EEPROM.
According to above-described embodiment of the disclosure, the new UE that present disclose provides a kind of relative to first kind V2X UE is (as above Described, alternatively referred to as the second class V2X UE had both supported single antenna to send or multiple antennas are supported to send) and executed on the new UE The method for carrying out direct communication with the second class V2X UE sent using multiple antennas, can be changed and be carried with smaller standard The performance of high V2X communication systems.Specifically, new UE determines the UE using more according to the PSCCH of the second class V2X UE detected Antenna is sent, then the PSSCH-RSRP of the UE is compensated or compensation of equal value (when adjustment determines available candidate resource with The predetermined threshold that PSSCH-RSRP is compared), to reduce the transmission money for the second class V2X UE for using multiple antennas to send The occupied possibility in source.In addition, when needing to reduce resource selection window when the delay requirement of new UE transmission datas is smaller, new UE Higher modulation coding scheme may be used to reduce required single sub-frame resource, using the possible candidate single sub-frame resource of increase The modes such as ratio increase available candidate's single sub-frame resource quantity in resource selection window, to avoid identical money is selected between different UE The possibility in source.
Those skilled in the art of the present technique are appreciated that the disclosure includes being related to for executing in operation described in the disclosure One or more equipment.These equipment can specially be designed and be manufactured for required purpose, or can also include general Known device in computer.These equipment have the computer program being stored in it, these computer programs are selectively Activation or reconstruct.Such computer program can be stored in equipment (for example, computer) readable medium or be stored in It e-command and is coupled to respectively in any kind of medium of bus suitable for storage, the computer-readable medium includes but not Be limited to any kind of disk (including floppy disk, hard disk, CD, CD-ROM and magneto-optic disk), ROM (Read-Only Memory, only Read memory), RAM (Random Access Memory, immediately memory), EPROM (Erasable Programmable Read-Only Memory, Erarable Programmable Read only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card Piece.It is, readable medium includes by any Jie of equipment (for example, computer) storage or transmission information in the form of it can read Matter.
Those skilled in the art of the present technique be appreciated that can with computer program instructions come realize these structure charts and/or The combination of each frame and these structure charts and/or the frame in block diagram and/or flow graph in block diagram and/or flow graph.This technology is led Field technique personnel be appreciated that these computer program instructions can be supplied to all-purpose computer, special purpose computer or other The processor of programmable data processing method is realized, to pass through the processing of computer or other programmable data processing methods The scheme specified in frame or multiple frames of the device to execute the structure chart and/or block diagram and/or flow graph disclosed in the disclosure.
Those skilled in the art of the present technique are appreciated that in the various operations crossed by discussion in the disclosure, method, flow Steps, measures, and schemes can be replaced, changed, combined or be deleted.Further, each with what is crossed by discussion in the disclosure Other steps, measures, and schemes in kind operation, method, flow may also be alternated, changed, rearranged, decomposed, combined or deleted. Further, in the prior art to have and step, measure, the scheme in various operations, method, flow disclosed in the disclosure It may also be alternated, changed, rearranged, decomposed, combined or deleted.
The above is only some embodiments of the disclosure, it is noted that for the ordinary skill people of the art For member, under the premise of not departing from disclosure principle, several improvements and modifications can also be made, these improvements and modifications are also answered It is considered as the protection domain of the disclosure.

Claims (15)

1. a kind of data transmission method for uplink, the method executes at the first user equipment (UE), the method includes：
The Bypass Control channel PSCCH that the 2nd UE is sent is detected on one or more carrier waves；
On each carrier according to the PSCCH detected to the demodulation reference channel received power PSSCH-RSRP of the 2nd UE It compensates；
Available candidate single sub-frame resource is determined according to the PSSCH-RSRP after compensation on each carrier；And
Bypass data channel is sent using at least one of identified available candidate single sub-frame resource on all carrier waves PSSCH。
2. according to the method described in claim 1, wherein, the PSCCH detected includes following at least with the next item down：
2nd UE uses the instruction that multiple antennas is sent；Or
The instruction of PSSCH-RSRP compensation is carried out to the 2nd UE.
3. method according to claim 1 or 2, wherein determine available candidate list according to the PSSCH-RSRP after compensation Frame resource includes：
If the current PSCCH for only detecting the 2nd UE on a carrier wave and sending of the first UE, determine and are more than in resource selection window 20% single sub-frame resource is available candidate single sub-frame resource；
If the first UE PSCCH that currently the 2nd UE of detection is sent over a number of carriers, determine 20% × Rc in resource selection window Single sub-frame resource be available candidate single sub-frame resource, wherein Rc is equal to 1,1/N or Pc, and N is the variable numbers that currently select of UE,CBRiFor the CBR on i-th of carrier wave.
4. according to the method in any one of claims 1 to 3, wherein utilize identified available candidate single sub-frame resource Include to send bypass data channel PSSCH：
Select the initial index value m of modulation coding scheme MCS；
The index value m ' that effective MCS is determined based on min (m+d, 28) or min (m+d, 31), according to m ' and scheduled MCS index values Transport block size index is determined with the mapping ruler of transport block size index, and according to m ' and scheduled MCS index values and modulation The mapping ruler of exponent number determines that order of modulation, the wherein value of d are configured or are pre-configured by base station；And
It is sent in identified available candidate single sub-frame resource according to determining transport block size index and order of modulation PSSCH。
5. according to the method in any one of claims 1 to 3, wherein utilize identified available candidate single sub-frame resource Include to send bypass data channel PSSCH：
Select the initial index value m of modulation coding scheme MCS；
Transport block size index is determined according to m and scheduled MCS index values and the mapping ruler of transport block size index, and according to M and scheduled MCS index values and order of modulation mapping ruler, determine order of modulation Q '；And
According to determining transport block size index and Q in identified available candidate single sub-frame resource transmission data, wherein Q= Max (4, Q ').
6. a kind of data transmission method for uplink, the method executes at the first user equipment (UE), the method includes：
The Bypass Control channel PSCCH that the 2nd UE is sent is detected on one or more carrier waves；
Predetermined threshold is adjusted according to the PSCCH detected on each carrier；
The demodulation reference channel received power PSSCH-RSRP of 2nd UE is compared with the predetermined threshold after adjustment；
Available candidate single sub-frame resource is determined according to comparison result；And
Bypass data channel is sent using at least one of identified available candidate single sub-frame resource on all carrier waves PSSCH。
7. according to the method described in claim 6, wherein, the PSCCH detected includes priority offset instruction, is used to indicate institute It is inclined between the priority that the data of the practical priority and the 2nd UE of stating the 2nd UE transmission datas to be scheduled are sent Move, and according to the PSCCH detected to predetermined threshold be adjusted including：According to priority deviate instruction to predetermined threshold into Row adjustment.
8. the method described according to claim 6 or 7, wherein determine that available candidate single sub-frame resource includes according to comparison result：
If the current PSCCH for only detecting the 2nd UE on a carrier wave and sending of the first UE, determine and are more than in resource selection window 20% single sub-frame resource is available candidate single sub-frame resource；If currently the 2nd UE of detection is sent the first UE over a number of carriers PSCCH, determine 20% × Rc in resource selection window single sub-frame resource be available candidate single sub-frame resource, wherein Rc be equal to 1, 1/N or Pc, N are the variable number that UE is currently selected,CBRiFor the CBR on i-th of carrier wave.
9. the method according to any one of claim 6 to 8, wherein utilize identified available candidate single sub-frame resource Include to send bypass data channel PSSCH：
Select the initial index value m of modulation coding scheme MCS；
The index value m ' that effective MCS is determined based on min (m+d, 28) or min (m+d, 31), according to m ' and scheduled MCS index values Transport block size index is determined with the mapping ruler of transport block size index, and according to m ' and scheduled MCS index values and modulation The mapping ruler of exponent number determines that order of modulation, the wherein value of d are configured or are pre-configured by base station；And
It is sent in identified available candidate single sub-frame resource according to determining transport block size index and order of modulation PSSCH。
10. the method according to any one of claim 6 to 8, wherein utilize identified available candidate single sub-frame resource Include to send bypass data channel PSSCH：
Select the initial index value m of modulation coding scheme MCS；
Transport block size index is determined according to m and scheduled MCS index values and the mapping ruler of transport block size index, and according to M and scheduled MCS index values and order of modulation mapping ruler, determine order of modulation Q '；And
According to determining transport block size index and Q in identified available candidate single sub-frame resource transmission data, wherein Q= Max (4, Q ').
11. a kind of data transmission method for uplink, the method executes at the first user equipment (UE), the method includes：
The Bypass Control channel PSCCH that the 2nd UE is sent is detected on one or more carrier waves；
On each carrier according to the PSCCH detected to the demodulation reference channel received power PSSCH-RSRP of the 2nd UE It compensates and predetermined threshold is adjusted；
PSSCH-RSRP after compensation is compared with the predetermined threshold after adjustment；
Available candidate single sub-frame resource is determined according to comparison result；And
Bypass data channel PSSCH is sent using identified available candidate single sub-frame resource on all carrier waves.
12. according to the method for claim 11, wherein compensate packet to PSSCH-RSRP according to the PSCCH detected It includes：PSSCH-RSRP is compensated according at least one of following：
2nd UE uses the instruction that multiple antennas is sent；Or
The instruction of PSSCH-RSRP compensation is carried out to the 2nd UE.
13. method according to claim 11 or 12, wherein the PSCCH detected includes priority offset instruction, is used for Indicate priority that the data of the practical priority of the 2nd UE transmission datas and the 2nd UE to be scheduled are sent it Between offset, and according to the PSCCH detected to predetermined threshold be adjusted including：Instruction is deviated to predetermined according to priority Threshold value is adjusted.
14. a kind of first user equipment (UE), including：
Transceiver；
Processor；And
Memory is stored with computer executable instructions, and the computer executable instructions make described when being executed by processor First UE executes method according to any one of claim 1 to 13.
15. a kind of computer storage media is stored with computer executable instructions, the computer executable instructions are by first When the processor of user equipment (UE) executes, the first UE is made to execute method according to any one of claim 1 to 13.
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