CN107733591A - Transmission method and device - Google Patents

Transmission method and device Download PDF

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Publication number
CN107733591A
CN107733591A CN201610652222.0A CN201610652222A CN107733591A CN 107733591 A CN107733591 A CN 107733591A CN 201610652222 A CN201610652222 A CN 201610652222A CN 107733591 A CN107733591 A CN 107733591A
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China
Prior art keywords
subchannel
bandwidth
sub
channel
channels
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CN201610652222.0A
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Chinese (zh)
Inventor
周淼
王夏男
孙鹏
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Beijing Xinwei Telecom Technology Inc
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Beijing Xinwei Telecom Technology Inc
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Priority to CN201610652222.0A priority Critical patent/CN107733591A/en
Publication of CN107733591A publication Critical patent/CN107733591A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses transmission method and device, this method includes：One or more subchannels in some subframe are selected in resource pool, wherein, resource pool is divided into the subchannel of multiple frequency divisions, all subframes use identical splitting scheme in time domain, or all subframes using independent splitting scheme and allow different subframes to use different splitting schemes in time domain；It is transmitted in the one or more subchannels selected.The present invention solves the problems, such as arbitrarily to select in existing resource pond caused by resource transmission control message, reduces blind check number to a certain extent, reduces expense.

Description

Transmission method and device
Technical field
The present invention relates to the communications field, in particular to transmission method and device.
Background technology
At present in V2X communications, service message is generally transmitted in some resource pool associated with type of service, hair The selected control resource of sending end node and data resource are used to send control message and data message, the claim data in control message The position of message and other demodulation information needed, receiving terminal node carries out blind check to possible control resource location, if success Certain control message is solved, then the data resource position stated in the message is intercepted and decoded.
In current general resource pool allocation plan, a kind of scheme is to allow to send control in identical or different subframe Message processed and data-message, when control and data-message are sent in identical subframe, control and data-message are continuous in frequency domain 's.Service message characteristic length based on V2X, the program require to allow the frequency domain resource position of transmitting control message must indirectly Must possess diversity, in order to avoid cause the waste of Radio Resource.For the requirement, if the arbitrarily selection resource in existing resource pond Transmitting control message, the notable growth of blind check number can be caused, serious pressure is formed to power consumption of terminal and expense.
The content of the invention
The invention provides transmission method and device, at least to solve the arbitrarily selection resource transmission control in existing resource pond The problem of caused by message processed.
According to an aspect of the invention, there is provided a kind of transmission method, including：Selected in resource pool in some subframe One or more subchannels, wherein, the resource pool is divided into the subchannel of multiple frequency divisions, and all subframes use phase in time domain With splitting scheme, or, all subframes using independent splitting scheme and allow different subframes using different in time domain Splitting scheme；It is transmitted in the one or more of subchannels selected.
According to another aspect of the present invention, a kind of transmitting device is additionally provided, including：Selecting module, in resource One or more subchannels in some subframe are selected in pond, wherein, the resource pool is divided into the subchannel of multiple frequency divisions, when All subframes use identical splitting scheme on domain, or, all subframes use independent splitting scheme and permission in time domain Different subframes use different splitting schemes；Transport module, for being carried out in the one or more of subchannels selected Transmission.
Solved at least by the present invention and solve arbitrarily to select in existing resource pond caused by resource transmission control message The problem of, reduce blind check number to a certain extent, reduce expense.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of transmission method according to embodiments of the present invention；
Fig. 2 is the structured flowchart of transmitting device according to embodiments of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In the present embodiment, there is provided a kind of transmission method, Fig. 1 are the flows of transmission method according to embodiments of the present invention Figure, as shown in figure 1, the flow comprises the following steps：
Step S102, one or more subchannels in some subframe are selected in resource pool, wherein, resource pool is divided into The subchannel of multiple frequency divisions, all subframes use identical splitting scheme in time domain, or, all subframes use independent in time domain Splitting scheme and allow different subframes to use different splitting schemes；
Step S104, it is transmitted in the one or more subchannels selected.
Solved at least by above-mentioned steps and solve arbitrarily to select resource transmission control message to be led in existing resource pond The problem of cause, reduce blind check number to a certain extent, reduce expense.
As an optional embodiment, when the frequency domain bandwidth of resource pool is M resource block RB, by resource pool Any subframe is divided into the subchannel of N number of frequency division multiplexing, wherein, any single subchannel is the continuous integer on frequency domain RB, the 1st, 2 ... N number of subchannel arranges to continuous adjacent in order in frequency domain.
As an optional embodiment, any subframe in resource pool is divided into the subchannel of N number of frequency division multiplexing Including at least one of：
In a case of n=1, a width of M RB of sub-channel, wherein, most preceding continuous K RB and last continuous K RB are Control channel, remaining RB are data channel；
In N>In the case of 1, at least one of following distribution principle is used：Ensureing each a width of integer of sub-channel On the premise of RB, subchannel bandwidth is set farthest to homogenize；Preferentially ensure the minimum bandwidth of a number of subchannel, On the basis of this all subchannels are carried out with the distribution of remaining bandwidth.
As an optional embodiment, in N>In the case of 1, for the adjacent subchannel of any two frequency domain, such as Its frequency domain adjacent position of fruit is control channel or is data channel, then the control of the adjacent position of two sub-channels and/or Data channel can not it is overlapping, partly overlap or completely overlapped.
As an optional embodiment, if any combination of the overlapping and overlapping degree based on following factor determines：
Whether resource pool allows subchannel overlapping；Channel type is control or data；The bandwidth of two sub-channels and other Difference between subchannel bandwidth；The gain of channel overlap sub-channel bandwidth homogenization；Resource pool busy extent, application can be passed through Scene, resources occupation rate, resource pool mean receiving power, the number of users in resource pool, number of services in resource pool are appointed Meaning combination calculates.
As an optional embodiment, in N>In the case of 1, at least one of following processing is carried out：
During using ensureing subchannel minimum bandwidth principle, the reference bandwidth of the subchannel of guarantee is minimum bandwidth, Qi Tazi The reference bandwidth of channel is 0, and total adjustment will be adjusted always with a width of all residual available bandwidths, the adjustment of any subchannel with a width of Bandwidth allocation is to the bandwidth after all N number of subchannels, being assigned in any subchannel；
During using quasi- principle of equipartition, bandwidth adds adjustment bandwidth on the basis of the bandwidth of subchannel, wherein the base of any subchannel It is accurate with a width of floor (M/N) individual RB, total adjustment is with a width of N number of RB of M mod, and the adjustment of any subchannel is with a width of by M mod After N number of RB is assigned to N number of subchannel, the bandwidth that is assigned in any subchannel.
As an optional embodiment, it is allowed to use at least one of：
Allow first operational support subchannel minimum bandwidth principle, using during quasi- principle of equipartition allow M=M1 and/or N=N1, M1 is the preferential remaining frequency domain RB quantity ensured after subchannel minimum bandwidth, and N1 is that need not ensure the other of subchannel minimum bandwidth Subchannel number；
Allow first to determine reference bandwidth and total adjustment bandwidth, operational support subchannel minimum bandwidth original using quasi- principle of equipartition The then total adjustment bandwidth of distribution.
As an optional embodiment, total adjustment bandwidth is allocated including：
The data channel and/or control channel that are embodied in increase subchannel of the adjustment bandwidth allocation to certain sub-channels RB numbers；
The adjustment of any subchannel is distributed to a width of nonnegative integer RB；The distribution of bandwidth is adjusted based between subchannel Whether overlapping conditions, the control channel number on every sub-channels, subchannel have preferentially been ensured minimum bandwidth, the sequence of subchannel Number carry out.
As an optional embodiment, the principle being allocated to total adjustment bandwidth includes at least one of：
When certain two adjacent subchannel exist P0 RB it is overlapping when, total bandwidth that adjusts increases P0 RB；Or, extraly By P1 and P2 (0<=P1+P2<=P0) individual RB is assigned to the non-overlapped parts of two sub-channels, by P3=P0-P1-P2 RB points It is fitted on other subchannel bandwidths or increases in total adjustment bandwidth；
Sub-channel is given for some overlapping with adjacent subchannel be present, being preferably its distribution adjustment bandwidth；
When in certain sub-channels containing 1 control channel is had more than, adjustment bandwidth is distributed the sub-channel priority；
When M mod N are more than some given threshold value T1, to ensure the minimum bandwidth of single or multiple subchannels, by M Mod N number of RB or T1 RB distribute to single or multiple subchannels as adjustment bandwidth；The adjustment bandwidth of other subchannels is tired out Add and be correspondingly 0 or M mod N-T1, wherein, given threshold value T1 is probably fixed, or the value based on M and/or N obtains 's；
When M mod N are less than some given threshold value T2, the preferentially any combination distribution to following subchannel adjusts bandwidth； Positioned at resource pool frequency domain marginal position, and frequency domain marginal position is the subchannel of data channel, and K RB adjustment band is distributed for it Width is used as control channel, positioned at resource pool frequency domain marginal position, namely is located at original control channel the both sides of data channel；
When M mod N belong to some given threshold value section [T3, T4] it is interior when, it is specific in this section according to M mod N Value, determine the overlapping conditions between certain group or multigroup adjacent sub-channel；
Remaining adjustment bandwidth after total adjustment bandwidth or guarantee minimum bandwidth is assigned to all sub- letters as homogeneously as possible On road, make the mean square deviation minimum of whole subchannel bandwidths or other subchannel bandwidths in addition to the part subchannel for ensureing minimum bandwidth Mean square deviation it is minimum；On the premise of meeting this principle, one progress is selected when some adjustment bandwidth RB can appoint between more sub-channels During distribution, there are overlapping conditions in possible prioritizing selection or the subchannel including multiple control channels is allocated.
As an optional embodiment, sub-channel is given for some overlapping with adjacent subchannel be present, being preferably In the case that it distributes adjustment bandwidth, including at least one of：
Preferential amplitude can be since 1 RB, to the RB numbers no more than overlap margin；
The value that preferential amplitude uses determines according to the relation of total adjustment bandwidth and number of subchannels, overlapping degree；
The adjustment bandwidth preferentially distributed is located at the side to overlap, and channel type is identical with lap；
Extra adjustment bandwidth is no longer distributed after completing preferential distribution, or remaining adjustment band is carried out together with other subchannels Wide distribution.
As an optional embodiment, when in certain sub-channels containing 1 control channel is had more than, to the subchannel Preferential distribution adjustment bandwidth, including at least one of：
Preferential amplitude linearly or nonlinearly increases with the quantity of control channel in subchannel；
Extra adjustment bandwidth is no longer distributed after completing preferential distribution, or remaining adjustment band is carried out together with other subchannels Wide distribution.
As an optional embodiment, in N>In the case of 1,
In any odd number sub-channels, most preceding continuous K RB is control channel, and remaining RB is data channel；And arbitrarily In even number sub-channels, last continuous K RB is control channel, and remaining RB is data channel；
In any odd number sub-channels, last continuous K RB is control channel, and remaining RB is data channel；And arbitrarily In even number sub-channels, most preceding continuous K RB is control channel, and remaining RB is data channel.
As an optional embodiment, in addition at least one of：
K typical value is the frequency domain dimension of V2X control messages；
Allow to be interchangeable the size of above subchannel and position；
Allow to be interchangeable the data channel of certain sub-channels and the position of control channel；
Support the merging of adjacent sub-channel.
As an optional embodiment, the merging of adjacent sub-channel includes：
The actual bandwidth taken of a width of S sub-channels of sub-channel after merging；
In subchannel after merging, the position and total bandwidth of control channel and data channel can be with former S sub-channels internal controls The position of channel and data channel processed and total bandwidth are identical or different；
When position difference, control channel discrete in former S sub-channels is merged into one or two frequency domain and occupies company Continue K RB control channel, be correspondingly situated at subchannel unilateral or bilateral edge.
As an optional embodiment, if allow to select more sub-channels and/or when allowing it is that may be present Maximum optional number of subchannels is limited to：Terminal is pre-configured, high-rise configuration, base station is allocated to terminal or base station configuration To resource pool.
As an optional embodiment, in the case where allowing terminal to select more sub-channels to be transmitted, also wrap Include at least one of：
When the message-length for needing to transmit is in given section, terminal selects more sub-channels；
In the MCS that terminal is recommended using pre-configured MCS lists or acquisition, if recommending MCS or currently available Maximum MCS can not be such that business is transmitted in a sub-channels, and terminal selects more sub-channels；
When terminal selects any single subchannel can not meet performance requirement, include each money of any single subchannel When the reception energy of source unit or the maximum and/or minimum and/or average value of occupancy number of users are not in given threshold value section, Terminal selects more sub-channels, otherwise selects a sub-channels.
As an optional embodiment, the quantity of selection includes at least one of：Fixed value, corresponding message-length Fixed value, permission business can use the minimum value of MCS transmission to recommend MCS or give minimum MCS or maximum.
As an optional embodiment, when terminal selects a sub-channels, if frequency domain dimension in resource pool be present not Same subchannel, terminal perform at least one of：
According to service message length or the sub-channels size set of type selecting one, meeting all sub- letters of size set Transfer resource position is chosen in road；
Select some sub-channels set of dimensions to close according to service message length, it is ranked up, sequentially judgement is successively It is no to meet following decision condition, if satisfied, selecting the set of dimensions to merge the judgement stopped to other sizes set；If to all chis Very little set judges the still size set without the condition that meets after terminating, then：Select the size set closest to decision condition；Or, choosing Select most preceding size set of sorting.
As an optional embodiment, in addition at least one of：
Sort method includes at least one of：Default subchannel size set and type of message and/or message-length Between priority relationship is absolute or carries out selection by probability, the set in same priority is ranked up at random；
Decision condition includes following any combination in given threshold value section：In the set, each or any one height On channel and/or in subchannel, on each resource units：Maximum and/or minimum and/or average received energy；Highest and/or The minimum and/or average number of users being transmitted；
Control channel and/or data channel in sub-channel are judged；
After selected size set, chosen in all subchannels for meeting size set or the subchannel for meeting decision condition Transfer resource position, transmitting control message in the control channel in transfer resource position, the data in transfer resource position Channel data-message.
As an optional embodiment, when terminal selects more sub-channels, including at least one of：
The subchannel for whether allowing to select frequency domain discrete can be the build-in attribute that base station is allocated to resource pool, or by base station Terminal is allocated to, or is configured by terminal is high-rise；
If the different subchannel of frequency domain dimension in resource pool be present, terminal can be with：Multiplex terminal select a sub-channels and Mechanism during the different subchannel of frequency domain dimension in resource pool be present, but subchannel size set is changed to subchannel set of dimensions collection Close, one of subchannel set of dimensions is a vector, the size of the corresponding sub-channels of an element, vector length in vector More than one and no more than the number of sub-channels for allowing terminal to select；
After terminal selects multiple continuous or discrete subchannels, when sending the control channel of control message, it is allowed to use The continuous control channel across subchannel in more sub-channels；
If allowing terminal to send data on a control channel, contain multiple control channels in selected groups of subchannels When select a transmission for being controlled message, wherein, any combination of following criterion can be used in the selection to control channel：Base In position, every section of continuously available control channel into more sub-channels it is continuous one or more snippets frequency domain top edge and/or The distance of lower edge；Based on bandwidth, the bandwidth of every section of continuously available control channel；Based on busy extent, every section continuously available Control channel on average/highest/minimum receiving power and/or use number of users；According to channel width or available channel band Width normalization, wherein available channel bandwidth refer to K RB direct and adjacent data channel in control channel；Selected control channel Afterwards, control message is sent in selected control channel, data-message is sent on data channel and remaining control channel；
If not allowing terminal to send data on a control channel, control channel multiplexing above criterion is selected, also Add any combination with following criterion：Unchecked control channel is considered as without using rear, the subchannel used is minimized and exists Discontinuous degree on frequency domain；After selected control channel, control message is sent in selected control channel, on a data channel Data-message is sent, control message is sent in remaining control channel or without sending.
As an optional embodiment, in addition to：
For multiple typical lengths of V2X service messages, when MCS can not match with subchannel size, using below extremely It is one of few：Add filler at service message beginning or end, be introduced into one group of new V2X the MCS used, wherein, for drawing Enter new MCS scheme, when mapping relations be present with service message length in subchannel size, the mapping of given service message length To one or more optional subchannel sizes.
As an optional embodiment, in addition to：
The configuration of subchannel includes：Fixed configurations and/or flexible configuration, wherein,
For fixed configurations, the subchannel configuration schemes of a variety of fixations are arrived in terminal and base station default one, pass through following ginseng Several any combination mappings determines the classification of concrete application：Subchannel arrangements type sequence number, resource pool frequency domain bandwidth, scene class Type, number of sub-channels.Argument section can voluntarily be obtained by terminal and/or base station, partly need base station to be stated to terminal.
For flexible configuration, be multiplexed the mechanism of fixed configurations, and from base station in change subchannel splitting scheme every time to Terminal configures relevant parameter；Or, from base station configure to terminal/weigh sub-channel when, directly statement is following is combined：Resource Pond bandwidth, number of sub-channels, the bandwidth of all or part of subchannel, the original position of all or part of subchannel, whole or portion The end position of molecule channel.
As an optional embodiment, parameter is stated in base station to terminal in fixed configurations and flexible configuration, including Parameter is carried in MIB and/or the SIB broadcast message of base station, or parameter is carried and is establishing after connection what is used with terminal In the distinctive unicast messages of terminal, or carried when configuring resource pool relevant information to terminal in message is configured.
In the present embodiment, a kind of transmitting device is additionally provided, Fig. 2 is the knot of transmitting device according to embodiments of the present invention Structure block diagram, as shown in Fig. 2 the device includes：
Selecting module 22, for selecting one or more subchannels in some subframe in resource pool, wherein, resource pool The subchannel of multiple frequency divisions is divided into, all subframes use identical splitting scheme in time domain, or, all subframes make in time domain With independent splitting scheme and different subframes are allowed to use different splitting schemes；
Transport module 24, for being transmitted in the one or more subchannels selected.
Illustrated with reference to an optional embodiment.
In the present embodiment, a kind of V2X resource pools subchannel partition mechanism is introduced, some resource pool is divided into several Fixed or semi-static subchannel combinations, wherein including the continuous control channel of frequency domain and data channel in per sub-channels. When terminal selects transfer resource, in resource selection unit of the frequency domain using subchannel as minimum, select a sub-channels and mean Using whole frequency domain resources in the subchannel.
Propose in the present embodiment and a kind of some is given into the son that resource pool is divided into several Dividing in frequency domain in V2X The method of channel, specifically, there is provided the partitioning algorithm of subchannel, the collocation method of subchannel splitting scheme, when being transmitted The other modifications made in the system of selection of sub-channel and transmitting procedure according to the configuring condition of subchannel needs.Specific side Case is as follows：
1st, resource pool subchannel partitioning algorithm
In V2X communications, for some given resource pool, carrying out the scheme of subchannel division to it includes：
A) complete resource pool is divided into the subchannel of several frequency divisions, all subframes are divided using identical in time domain Scheme；
B) complete resource pool is divided into the subchannel of several frequency divisions, all subframes use independent division in time domain Scheme, and allow different subframes to use different splitting schemes；
It is assumed that the resource pool frequency domain bandwidth is M RB, any subframe in the resource pool is divided into N number of frequency division answers The scheme of subchannel is as follows, wherein any single subchannel is continuous integer RB, the 1st, 2 ... N number of son on frequency domain Channel arranges to continuous adjacent in order in frequency domain：
(1) N=1:The a width of M RB of sub-channel, wherein most preceding continuous K RB and last continuous K RB are control channel, Remaining RB is data channel；
(2)N>When 1, any combination of two kinds of distribution principles is used：
A) by the way of standard is divided equally, on the premise of each a width of integer RB of sub-channel is ensured, son is realized as far as possible Channel width homogenizes；
B) preferentially ensure the minimum bandwidth of a number of subchannel, tape remaining is carried out to all subchannels on this basis Wide distribution；
(3)N>When 1, in addition to, for the adjacent subchannel of any two frequency domain, if its frequency domain adjacent position is control Channel is data channel, and control/data channel of the adjacent position of described two subchannels can not overlapping or part It is overlapping or completely overlapped；
Whether any combination of the overlapping and overlapping degree based on following factor determines：Whether resource pool allows subchannel weight It is folded；Channel type is control or data；Difference between the bandwidth of described two subchannels and other subchannel bandwidths；Channel overlap The gain of sub-channel bandwidth homogenization；Resource pool busy extent, can be average by application scenarios, resources occupation rate, resource pool Any combination of the number of services in number of users, resource pool in receiving power, resource pool calculates；
(4)N>When 1, further, including following scheme：
A) use ensure subchannel minimum bandwidth principle when, it is necessary to ensure subchannel reference bandwidth for minimum bandwidth, The reference bandwidth of other subchannels is 0, and total adjustment is incited somebody to action with a width of all residual available bandwidths, the adjustment of any subchannel with a width of Total adjustment bandwidth allocation is to after all N number of subchannels, the bandwidth being arbitrarily assigned in subchannel；During distribution adjustment bandwidth Quasi- principle of equipartition can be combined or distributed using other modes；
When b) using quasi- principle of equipartition, bandwidth adds adjustment bandwidth on the basis of the bandwidth of subchannel, wherein any subchannel Reference bandwidth is floor (M/N) individual RB, and total adjustment is with a width of M modN RB, and the adjustment of any subchannel is with a width of by M mod After N number of RB is assigned to N number of subchannel, the bandwidth being arbitrarily assigned in subchannel；
C) when quasi- principle of equipartition is used in combination in scheme with ensureing subchannel minimum bandwidth principle, it is allowed to first operational support Subchannel minimum bandwidth, now b) allows M=M1 in formula, N=N1, M1 are the preferential remaining frequency ensured after subchannel minimum bandwidth Domain RB quantity, N1 are the other subchannel numbers that need not ensure subchannel minimum bandwidth；Also allow first true using quasi- principle of equipartition Determine reference bandwidth and total adjustment bandwidth, the total adjustment bandwidth of operational support subchannel minimum bandwidth principle distribution；
When d) being allocated to total adjustment bandwidth, bandwidth allocation being embodied in described in increase to certain sub-channels is adjusted The data channel of subchannel and/or the RB numbers of control channel；The adjustment of any subchannel is distributed to a width of nonnegative integer RB； Whether the distribution of bandwidth is adjusted based on the overlapping conditions between subchannel, per the control channel number on sub-channels, subchannel Preferentially ensured minimum bandwidth, the sequence number of subchannel is carried out；
Further, distribution principle includes following any combination：
I. when certain two adjacent subchannel exist P0 RB it is overlapping when, total bandwidth that adjusts increases P0 RB；It is or, extra Ground is by P1 and P2 (0<=P1+P2<=P0) individual RB is assigned to the non-overlapped parts of described two subchannels, by P3=P0-P1-P2 Individual RB is assigned on other subchannel bandwidths or increased in total adjustment bandwidth；
Ii. sub-channel is given for some overlapping with adjacent subchannel be present, is preferably its distribution adjustment bandwidth；
1. further, preferential amplitude can be since 1 RB, to the RB numbers no more than overlap margin；Specifically use Value can determine according to the relation of total adjustment bandwidth and number of subchannels, overlapping degree；
2. the adjustment bandwidth preferentially distributed is located at the side to overlap, channel type is identical with lap；
3. no longer distributing extra adjustment bandwidth after completing preferential distribution, or remaining adjustment is carried out together with other subchannels The distribution of bandwidth；
Iii. when in certain sub-channels containing 1 control channel is had more than, adjustment bandwidth is distributed the sub-channel priority；
1. further, preferential amplitude can linearly or nonlinearly increase with the quantity of control channel in subchannel；
2. no longer distributing extra adjustment bandwidth after completing preferential distribution, or remaining adjustment is carried out together with other subchannels The distribution of bandwidth；
Iv. when M mod N are more than some given threshold value T1, to ensure the minimum bandwidth of single or multiple subchannels, by M Mod N number of RB or T1 RB distribute to the single or multiple subchannels as adjustment bandwidth；The adjustment bandwidth of other subchannels It is cumulative and be correspondingly 0 or M mod N-T1；
The given threshold value T1 is probably fixed, or the value based on M and/or N obtains；
V. when M mod N are less than some given threshold value T2, the preferentially any combination distribution to following subchannel adjusts band It is wide；
Positioned at resource pool frequency domain marginal position, and frequency domain marginal position is the subchannel of data channel, and K RB is distributed for it Adjustment bandwidth as control channel, be located at data channel positioned at resource pool frequency domain marginal position, namely with original control channel Both sides；
Vi. when M mod N belong to some given threshold value section [T3, T4] it is interior when, according to tools of the M modN in this section Body value, determine the overlapping conditions between certain group or multigroup adjacent sub-channel；
Vii. remaining adjustment bandwidth after total adjustment bandwidth or guarantee minimum bandwidth is assigned to as homogeneously as possible all In subchannel, make the mean square deviation minimum of whole subchannel bandwidths or other subchannels in addition to the part subchannel for ensureing minimum bandwidth The mean square deviation of bandwidth is minimum；On the premise of meeting this principle, one is selected when some adjustment bandwidth RB can appoint between more sub-channels When being allocated, there are overlapping conditions in possible prioritizing selection or the subchannel including multiple control channels is allocated；
E) in any odd number sub-channels, most preceding continuous K RB is control channel, and remaining RB is data channel；And appoint Anticipate in even number sub-channels, last continuous K RB is control channel, and remaining RB is data channel；
Or, in any odd number sub-channels, last continuous K RB is control channel, and remaining RB is data channel；And In any even number sub-channels, most preceding continuous K RB is control channel, and remaining RB is data channel；
For above scheme, further, in addition to：
(1) K typical value is the frequency domain dimension of V2X control messages；
(2) allow to the size of above subchannel and position (including the position between subchannel, or control channel in subchannel With the position of data channel) it is interchangeable；
(3) on the basis of above scheme, the extra merging for supporting adjacent sub-channel, namely N number of subchannel can be by right Realized after merging processing again by the N ' sub-channels of above scheme design.S sub-channels are merged into 1 sub-channels Method includes：
A) a width of actual bandwidth taken of S sub-channels of sub-channel after merging；
B) in the subchannel after merging, the position and total bandwidth of control channel and data channel can with former S sub-channels The position and total bandwidth of control channel and data channel are identical or different；
When position difference, further, control channel discrete in former S sub-channels is merged into one or two frequency Domain occupies continuous K RB control channel, is correspondingly situated at subchannel unilateral or bilateral edge；
2. sub-channel configuration method
Subchannel includes fixed configurations and the class collocation method of flexible configuration two.
For fixed configurations, the subchannel configuration schemes of a variety of fixations are arrived in terminal and base station default one, can be by following Any combination mapping of parameter determines the classification of concrete application：Subchannel arrangements type sequence number, resource pool frequency domain bandwidth, scene class Type, number of sub-channels.The argument section can voluntarily be obtained by terminal and/or base station, partly need base station to be stated to terminal.
For flexible configuration, the mechanism of reusable fixed configurations, and by base station in change subchannel splitting scheme every time Relevant parameter is configured to terminal；Or, from base station configure to terminal/weigh sub-channel when, directly statement is following is combined：Money Source pond bandwidth, number of sub-channels, the bandwidth of all or part of subchannel, the original position of all or part of subchannel, all or The end position of part subchannel.The independent carry out sound of the frequency domain position that control and/or data channel that can be in sub-channel use It is bright, including the specific frequency domain position of statement or use certain in default various configurations；Or directly use default subchannel In position relationship.
In fixed configurations and flexible configuration base station to terminal state parameter, including by parameter carry base station MIB and/or In SIB broadcast messages, or parameter is carried and established with terminal after connection in the distinctive unicast messages of terminal used；Can be independent Configure to terminal, or carried when configuring resource pool relevant information to terminal in message is configured.
3. subchannel system of selection
Terminal can select one or more subchannels in some subframe to be transmitted when being transmitted in resource pool.It is It is no to allow to select more sub-channels, and if maximum that may be present optional number of subchannels limitation when allowing, can be that terminal is pre- What configuration or high level configured, base station is allocated to terminal, and base station is allocated to resource pool.
If allowing terminal to select more sub-channels to be transmitted, showed in terminal using pre-configured MCS lists or multiplexing LTE When having the MCS that mechanism acquisition recommends, if recommending MCS or currently available maximum MCS can not make business in a sub-channels Interior transmission, terminal select more sub-channels；Or when terminal selects any single subchannel can not meet performance requirement, including appoint The reception energy of each resource units for single subchannel of anticipating or highest/minimum/average value of occupancy number of users are not in giving When in threshold interval, terminal selects more sub-channels；
Specifically chosen quantity can be following any combination：Fixed value, or the fixed value of corresponding message-length, or allow Business can use the minimum value of MCS transmission to recommend MCS or give minimum MCS or maximum；Otherwise a sub-channels are selected.
When terminal selects a sub-channels, if the different subchannel of frequency domain dimension in resource pool be present, terminal can be with：
According to service message length or the sub-channels size set of type selecting one, meeting all of the size set Transfer resource position is chosen in subchannel；
Or,
Select some sub-channels set of dimensions to close according to service message length, it is ranked up, sequentially judgement is successively It is no to meet following decision condition, if satisfied, selecting the set of dimensions to merge the judgement stopped to other sizes set；If to all chis Very little set judges the still size set without the condition that meets after terminating, then：Select the size set closest to decision condition；Or, choosing Select most preceding size set of sorting；
Priority of the sort method between default subchannel size set and type of message and/or message-length is closed System, can be absolute, or carry out selection by probability；Set in same priority is ranked up at random；
The decision condition includes following any combination in given threshold value section：It is each or any one in the set On sub-channels and/or in subchannel, on each resource units：Maximum and/or minimum and/or average received energy；Highest And/or the minimum and/or average number of users being transmitted；
Control channel and data channel that can be in sub-channel be judged, also can determine that any of which；
After selected size set, in meeting all subchannels of the size set or meeting the subchannel of decision condition Choose transfer resource position；Transmitting control message in control channel in transfer resource position, in transfer resource position Data channel transmitting data message；
When terminal selects more sub-channels：
The subchannel for whether allowing to select frequency domain discrete can be the build-in attribute that base station is allocated to resource pool, or by base station Terminal is allocated to, or is configured by terminal is high-rise.
If the different subchannel of frequency domain dimension in resource pool be present, terminal can be with：Multiplex terminal select a sub-channels and Mechanism during the different subchannel of frequency domain dimension in resource pool be present, but subchannel size set is changed to subchannel set of dimensions collection Close, one of subchannel set of dimensions is a vector, the size of the corresponding sub-channels of an element, vector length in vector More than one and no more than the number of sub-channels for allowing terminal to select.
After terminal selects multiple continuous or discrete subchannels, when sending the control channel of control message, it is allowed to use The continuous control channel across subchannel in the multiple subchannel.
If allowing terminal to send data on a control channel, contain multiple control channels in selected groups of subchannels When select a transmission for being controlled message, wherein any combination of following criterion can be used in the selection to control channel：Base In position, specifically, every section of continuously available control channel one or more snippets continuous frequency domain into the multiple subchannel The distance of top edge and/or lower edge；Based on bandwidth, specifically, the bandwidth of every section of continuously available control channel；Based on busy Degree, specifically, average/highest/minimum receiving power in every section of continuously available control channel and/or using number of users, Further it can be normalized according to channel width or available channel bandwidth, wherein available channel bandwidth refers to direct sum in control channel It is believed that the K RB that road is adjacent.After selected control channel, control message is sent in selected control channel, in data channel and Data-message is sent in remaining control channel.
If not allowing terminal to send data on a control channel, control channel multiplexing above criterion is selected, volume Outer addition and any combination of following criterion：Unchecked control channel is considered as without using rear, minimizes the subchannel used Discontinuous degree on frequency domain；After selected control channel, control message is sent in selected control channel, in data channel Upper transmission data-message, control message is sent in remaining control channel or without sending.
4. the MCS design corresponding with resource pool subchannel
For multiple typical lengths of V2X service messages, when existing MCS can not match with subchannel size, use with Lower scheme：Add filler at service message beginning or end；And/or the MCS used is introduced into one group of new V2X.Wherein, Scheme for introducing new MCS, when mapping relations be present with service message length in subchannel size, given service message length Degree is mapped to one or more optional subchannel sizes, therefore correspondingly, given service message length is mapped to one or more MCS, specific MCS value are determined by specifically chosen subchannel size；Therefore, MCS sequence number can be carried in control message, and not Reusable sequence number when using different MCS with the service message of length, namely the business that MCS can be determined by service message type disappear Breath length and MCS sequence numbers together decide on.
Illustrated with reference to several alternative embodiments.
Embodiment one
Some given V2X a width of 50 RB of resource pool band, resource pool frequency domain are divided into the subchannel of 4 frequency divisions, time domain Upper all subframes use identical splitting scheme.V2X control messages are 2 RB in the typical sizes of frequency domain under the scene.
Splitting scheme one：Sub-channel bandwidth is allocated by the way of standard is divided equally.
The reference bandwidth of subchannel 1~4 is floor (50/4)=12 RB.Always adjust with a width of 50mod 4=2 RB. Resource pool does not allow subchannel overlapping.Control channel number on per sub-channels is 1, and non-overlapping situation, therefore right Fair play during each subchannel distribution adjustment bandwidth.It is located at the frequency domain edge of two sub-channels at resource pool frequency domain edge in system Position is control channel, non-overlapping between subchannel, does not consider preferentially to distribute when being allocated total adjustment bandwidth.
Total adjustment bandwidth 50mod 4 is not more than threshold value T1, does not use and ensures the total adjustment of subchannel minimum bandwidth principle distribution Bandwidth；Less than threshold value T2, the marginal position of two sub-channels at resource pool frequency domain edge is control channel, is carried out without preferential Distribution；Total adjustment bandwidth is assigned in all subchannels as homogeneously as possible, namely 1RB tune is respectively distributed to 2 sub-channels Whole bandwidth, adjustment bandwidth is distributed one by one since the larger subchannel of sequence number, used until exhausted to total adjustment bandwidth.
Final allocation result is that the 1st~4 sub-channels bandwidth is followed successively by 12,12,13,13 RB, in frequency domain without overlapping It is arranged in order, the 1st sub-channels take RB0~RB11, and wherein RB0~RB1 is control channel, and remaining RB is data channel；2nd Sub-channels take RB12~RB23, and wherein RB22~RB23 is control channel, and remaining RB is data channel；3rd sub-channels RB24~RB36 is taken, wherein RB24~RB25 is control channel, and remaining RB is data channel；4th sub-channels take RB37 ~RB49, wherein RB48~RB49 are control channel, and remaining RB is data channel.
Splitting scheme two：
The reference bandwidth of subchannel 1~4 is floor (50/4)=12 RB.Always adjust with a width of 50mod 4=2 RB. Resource pool allows subchannel overlapping.Control channel number on per sub-channels is 1, and bandwidth is adjusted to each subchannel distribution When fair play.The frequency domain marginal position of two sub-channels in system positioned at resource pool frequency domain edge is control channel, son Interchannel is non-overlapping, does not consider preferentially to distribute when being allocated total adjustment bandwidth.
Total adjustment bandwidth 50mod 4 belongs in threshold interval [T3, T4]=[2,3], determines weight between one group of adjacent sub-channel Each overlapping 1 RB between folded 2 RB or two group of adjacent sub-channels；Because the adjacent position of subchannel 1 and 2 is data channel, subchannel 3 It is data channel with 4 adjacent positions, the adjacent position of subchannel 2 and 3 is control channel, it is contemplated that data channel overlap margin accounts for letter Road total bandwidth proportion is smaller, selects data channel overlapping, selects subchannel 1 and 2, subchannel 3 and 4 respectively to have amplitude for 1 RB's It is overlapping.Total adjustment bandwidth increases by 2 RB, is changed into 4 RB.
Total adjustment bandwidth is assigned in all subchannels as homogeneously as possible, namely respectively distributed to all 4 sub-channels 1RB adjustment bandwidth.
Final allocation result is that the 1st~4 sub-channels bandwidth is followed successively by 13,13,13,13 RB, overlapping in frequency domain part Ground is arranged in order, and the 1st sub-channels take RB0~RB12, and wherein RB0~RB1 is control channel, and remaining RB is data channel； 2nd sub-channels take RB12~RB24, and wherein RB23~RB24 is control channel, and remaining RB is data channel；3rd son letter Road takes RB25~RB37, and wherein RB25~RB26 is control channel, and remaining RB is data channel；4th sub-channels take RB37~RB49, wherein RB48~RB49 are control channel, and remaining RB is data channel.
Splitting scheme three：
Divided equally using standard+ensure minimum bandwidth by the way of, the preferential minimum bandwidth for ensureing the 4th sub-channels is 20 RB, On this basis using the accurate sub-channels of model split the 1st~3 divided equally, a width of 10 RB of the 1st~3 sub-channels band.Additionally Ground, hydraulic performance decline caused by there is interference due to frequency domain edge, to the control channel in the 4th sub-channels and the position of data channel Put and be interchangeable.
Final allocation result is that the 1st~4 sub-channels bandwidth is followed successively by 10,10,10,20 RB, in frequency domain not overlappingly It is arranged in order, the 1st sub-channels take RB0~RB9, and wherein RB0~RB1 is control channel, and remaining RB is data channel；2nd Sub-channels take RB10~RB19, and wherein RB18~RB19 is control channel, and remaining RB is data channel；3rd sub-channels RB20~RB29 is taken, wherein RB20~RB21 is control channel, and remaining RB is data channel；4th sub-channels take RB30 ~RB49, wherein RB30~RB31 are control channel, and remaining RB is data channel.
Splitting scheme four：
Splitting scheme two is multiplexed, extraly, merges subchannel 1 and subchannel 2, the subchannel 1+2 after merging is with a width of 25 Individual RB, RB0~RB24 is taken, wherein RB0~RB1 is control channel, and remaining RB is data channel；The configuring condition of subchannel 3 and 4 It is constant.
Embodiment two
Base station side presets subchannel configuration schemes, including：Channel width is 50 RB, and number of subchannels 3, scene is at a high speed Lu Shi, a kind of Configuration Type；Channel width is 50 RB, number of subchannels 4, when scene is expressway, a kind of Configuration Type；Letter A width of 50 RB of road band, number of subchannels 3, when scene is city, two kinds of Configuration Types；Channel width is 50 RB, subchannel Number is 4, when scene is city, two kinds of Configuration Types；
It is city that base station and terminal, which each configure all in accordance with high level and obtain current scene,；Terminal sends transmission to base station please Ask, base station is configured to terminal using RRC unicast messages and sends license and resource pool information, states resource pool frequency domain within the message With a width of 50 RB, number of subchannels 3, Configuration Type serial number 0；Terminal is according to information that is voluntarily obtaining and being obtained from base station Determine resource pool configuration status.
Embodiment three
Base station side changes the subchannel splitting scheme of resource pool, and informs all terminals by the broadcast of SIB message, in broadcast The content of statement includes：Channel width is 50 RB；Number of subchannels is 3；The original position of first sub-channels is RB0, second The original position of sub-channels is RB15, and the original position of the 3rd sub-channels is RB30；The control channel of first sub-channels For RB0~RB1, the control channel position of the second sub-channels is bottom.Terminal voluntarily draw subchannel 1 using RB0~ RB14, wherein control channel are RB0~RB1, and remaining is data channel；Subchannel 2 uses RB15~RB29, default bottom Type is final 2 RB, then control channel is RB28~RB29, and remaining is data channel；Subchannel 3 uses RB30~RB49, Without proper notice controls/data channel in the case of the use of default control channel position is initial 2 RB, then control channel is RB30 ~RB31, remaining is data channel.
Example IV
A width of 50 RB of V2X resource pool bands, are divided into 4 sub-channels, share two class sizes：10 RB and 20 RB；Its In the 1st sub-channels take RB0~RB9, wherein RB0~RB1 is control channel, and remaining RB is data channel；2nd sub-channels RB10~RB19 is taken, wherein RB18~RB19 is control channel, and remaining RB is data channel；3rd sub-channels take RB20 ~RB29, wherein RB20~RB21 are control channel, and remaining RB is data channel；4th sub-channels take RB30~RB49, its Middle RB30~RB31 is control channel, and remaining RB is data channel.Each subframe uses identical subchannel division methods in time domain.
One length of terminal transmission is 300byte message, is long message according to type of message, determines that message can be in size It is transmitted in subchannel for 20 RB.Subchannel 4 is directly selected, using corresponding 300byte and 18RB one group of MCS value, Determine that this data-message transmits the MCS used according to measurement result in this group of MCS value.
One length of terminal transmission is 190byte message, according to message-length and currently available maximum MCS, it is determined that Message can be transmitted in the subchannel that size is 10 and 20 RB.According to preset content, 190byte type of messages are short Message, the type correspond to the size priority of probability selection, and specifically, terminal has 80% and 20% preference for probability selection respectively Size is that 10RB and 20RB subchannel is judged.Terminal performs the random selection operation based on probability, and random effect is excellent First selection size is judged for 10RB subchannel；Terminal, which is sentenced, to be sized in 10RB subchannel 1~3, subchannel 1 be present Receive energy with being averaged in 2 control and each resource units of data channel to be in given threshold value section, select chi The very little sets of sub-channels for 10RB is transmitted；Transfer resource position is chosen in subchannel 1 and subchannel 2, in selected biography Transmitting control message in control channel on defeated resource location, the data channel transmitting data in transfer resource position disappear Breath, using corresponding 190byte and 8RB one group of MCS value, this data-message is determined according to measurement result in this group of MCS value Transmit the MCS used.
Embodiment five
A width of 50 RB of V2X resource pool bands, are divided into 4 sub-channels, share two class sizes：10 RB and 20 RB；Its In the 1st sub-channels take RB0~RB9, wherein RB0~RB1 is control channel, and remaining RB is data channel；2nd sub-channels RB10~RB19 is taken, wherein RB18~RB19 is control channel, and remaining RB is data channel；3rd sub-channels take RB20 ~RB29, wherein RB20~RB21 are control channel, and remaining RB is data channel；4th sub-channels take RB30~RB49, its Middle RB30~RB31 is control channel, and remaining RB is data channel.Each subframe uses identical subchannel division methods in time domain.
One length of terminal transmission be 300byte message, MCS can be used according to message-length and maximum, determine message without Method is transmitted in single subchannel.The high-rise configuration of terminal does not allow to select discrete subchannel, it is allowed at most 3 sons of selection Channel, it is allowed to send data on a control channel.
The optional subchannel set of dimensions set of terminal includes：{ 10RB, 10RB }, { 10RB, 20RB }, 10RB, 10RB, 10RB }, { 10RB, 10RB, 20RB } (separately has { 10RB, 10RB, 10RB, 20RB } to exceed the optional number of subchannels of terminal).Remove { 10RB, 10RB } can not be provided outside enough resource quantities, and its remaining subchannels set of dimensions set is transmitted available for message.Terminal root According to the relation between default message-length and subchannel set of dimensions set, judge that usable set priority is identical, it is randomly ordered；It is first First judge { 10RB, 20RB } set of dimensions set, only element is channel 3+ channels 4 in set, because channel 4 does not meet judgement bar Part, without using the set of dimensions set；Secondly judge that { 10RB, 10RB, 20RB } gathers, only element is channel 2+ channels in set 3+ channels 4, similarly because channel 4 is without using the set of dimensions set；Finally judge that { 10RB, 10RB, 10RB } gathers, in set only One element is channel 1+ channel 2+ channels 3, the elements compounding decision condition, selects the set of dimensions set, selects in the set only One element；Because terminal allows to send data on a control channel, then select, be based in the control channel of subchannel 1/2/3 Each control channel bandwidth is equal under bandwidth condition, causes priority identical；In the case of location-based, the control of subchannel 1 The minimum distance of channel to subchannel 1+2+3 frequency domain lower edges is minimum value, selects the control channel of subchannel 1 to send control Message processed, data-message is sent in other control channels；
It is the groups of subchannels that transmission uses that terminal, which selectes subchannel 1+2+3, and some is selected in subchannel 1+2+3 combination Continuous RB0~RB29 in subframe is transmitted, and wherein RB0~RB1 sends control message, and RB2~RB29 sends data-message, Using corresponding 300byte and 28RB one group of MCS value, determine that this data-message passes according to measurement result in this group of MCS value The defeated MCS used.
A kind of scheme that subchannel division is carried out to V2X resource pools provided by above-described embodiment, is sending terminal Selected during message in more sub-channels, flexible configuration method and adaptively selected guarantee service message by subchannel Transmission performance；Control channel position when correspondingly receiving message in more sub-channels carries out blind check decoding, so as to reduce Blind check number, reduce expense.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific Hardware and software combines.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (24)

  1. A kind of 1. transmission method, it is characterised in that including：
    One or more subchannels in some subframe are selected in resource pool, wherein, the resource pool is divided into multiple frequency divisions Subchannel, all subframes use identical splitting scheme in time domain, or, all subframes use independent division side in time domain Case and different subframes are allowed to use different splitting schemes；
    It is transmitted in the one or more of subchannels selected.
  2. 2. according to the method for claim 1, it is characterised in that
    When the frequency domain bandwidth of the resource pool is M resource block RB, any subframe in the resource pool is divided into N number of frequency The subchannel of point multiplexing, wherein, any single subchannel is the continuous integer RB on frequency domain, the 1st, 2 ... N number of subchannel Arranged to continuous adjacent in order in frequency domain.
  3. 3. according to the method for claim 2, it is characterised in that any subframe in the resource pool is divided into N number of frequency Divide the subchannel of multiplexing to include at least one of：
    In a case of n=1, a width of M RB of sub-channel, wherein, most preceding continuous K RB and last continuous K RB are control Channel, remaining RB are data channel；
    In N>In the case of 1, at least one of following distribution principle is used：Ensureing each a width of integer RB's of sub-channel Under the premise of, subchannel bandwidth is farthest homogenized；Preferentially ensure the minimum bandwidth of a number of subchannel, in this base On plinth all subchannels are carried out with the distribution of remaining bandwidth.
  4. 4. according to the method for claim 3, it is characterised in that
    In N>In the case of 1, for the adjacent subchannel of any two frequency domain, if its frequency domain adjacent position is control channel Or be data channel, then the control of the adjacent position of described two subchannels and/or data channel can not overlapping, parts It is overlapping or completely overlapped.
  5. 5. according to the method for claim 4, it is characterised in that whether overlapping and overlapping degree is based on any of following factor Combination determines：
    Whether resource pool allows subchannel overlapping；Channel type is control or data；The bandwidth of described two subchannels and other Difference between subchannel bandwidth；The gain of channel overlap sub-channel bandwidth homogenization；Resource pool busy extent, application can be passed through Scene, resources occupation rate, resource pool mean receiving power, the number of users in resource pool, number of services in resource pool are appointed Meaning combination calculates.
  6. 6. according to the method for claim 4, it is characterised in that in N>In the case of 1, carry out following processing at least it One：
    During using ensureing subchannel minimum bandwidth principle, the reference bandwidth of the subchannel of guarantee is minimum bandwidth, other subchannels Reference bandwidth be 0, bandwidth will always be adjusted with a width of all residual available bandwidths, the adjustment of any subchannel with a width of by always adjusting After being assigned to all N number of subchannels, the bandwidth being arbitrarily assigned in subchannel；
    During using quasi- principle of equipartition, bandwidth adds adjustment bandwidth on the basis of the bandwidth of subchannel, wherein the reference tape of any subchannel The individual RB of a width of floor (M/N), always adjust with a width of N number of RB of M mod, the adjustment of any subchannel is with a width of N number of by M mod After RB is assigned to N number of subchannel, the bandwidth being arbitrarily assigned in subchannel.
  7. 7. according to the method for claim 6, it is characterised in that allow to use at least one of：
    Allow first operational support subchannel minimum bandwidth principle, be using M=M1 and/or N=N1, M1 is allowed during quasi- principle of equipartition The preferential remaining frequency domain RB quantity ensured after subchannel minimum bandwidth, N1 are the other sub- letters that need not ensure subchannel minimum bandwidth Road number；
    Allow first to determine reference bandwidth and total adjustment bandwidth, operational support subchannel minimum bandwidth principle point using quasi- principle of equipartition With total adjustment bandwidth.
  8. 8. according to the method for claim 6, it is characterised in that total adjustment bandwidth is allocated including：
    Adjustment bandwidth allocation increases the data channel and/or control channel of the subchannel to being embodied in for certain sub-channels RB numbers；
    The adjustment of any subchannel is distributed to a width of nonnegative integer RB；The distribution of bandwidth is adjusted based on overlapping between subchannel Whether situation, the control channel number on every sub-channels, subchannel have preferentially been ensured minimum bandwidth, the sequence number of subchannel has been entered OK.
  9. 9. according to the method for claim 8, it is characterised in that the principle being allocated to total adjustment bandwidth is included below extremely It is one of few：
    When certain two adjacent subchannel exist P0 RB it is overlapping when, total bandwidth that adjusts increases P0 RB；Or, extraly by P1 With P2 (0<=P1+P2<=P0) individual RB is assigned to the non-overlapped parts of described two subchannels, by P3=P0-P1-P2 RB points It is fitted on other subchannel bandwidths or increases in total adjustment bandwidth；
    Sub-channel is given for some overlapping with adjacent subchannel be present, being preferably its distribution adjustment bandwidth；
    When in certain sub-channels containing 1 control channel is had more than, adjustment bandwidth is distributed the sub-channel priority；
    When M mod N are more than some given threshold value T1, to ensure the minimum bandwidth of single or multiple subchannels, by M mod N Individual RB or T1 RB distributes to the single or multiple subchannels as adjustment bandwidth；The adjustment bandwidth of other subchannels adds up It is correspondingly 0 or M mod N-T1, wherein, the given threshold value T1 is probably fixed, or the value based on M and/or N obtains Arrive；
    When M mod N are less than some given threshold value T2, the preferentially any combination distribution to following subchannel adjusts bandwidth；It is located at Resource pool frequency domain marginal position, and frequency domain marginal position is the subchannel of data channel, the adjustment bandwidth for K RB of its distribution is made For control channel, positioned at resource pool frequency domain marginal position, namely it is located at original control channel the both sides of data channel；
    When M mod N belong to some given threshold value section [T3, T4] it is interior when, according to specific values of the M mod N in this section, Determine the overlapping conditions between certain group or multigroup adjacent sub-channel；
    Remaining adjustment bandwidth after total adjustment bandwidth or guarantee minimum bandwidth is assigned in all subchannels as homogeneously as possible, Make the mean square deviation of whole subchannel bandwidths minimum or other subchannel bandwidths in addition to the part subchannel for ensureing minimum bandwidth equal Variance is minimum；On the premise of meeting this principle, select one when some adjustment bandwidth RB can appoint between more sub-channels and be allocated When, there are overlapping conditions in possible prioritizing selection or the subchannel including multiple control channels is allocated.
  10. 10. according to the method described in claim 9, it is characterised in that given for some overlapping with adjacent subchannel be present Subchannel, in the case of being preferably its distribution adjustment bandwidth, including at least one of：
    Preferential amplitude can be since 1 RB, to the RB numbers no more than overlap margin；
    The value that preferential amplitude uses determines according to the relation of total adjustment bandwidth and number of subchannels, overlapping degree；
    The adjustment bandwidth preferentially distributed is located at the side to overlap, and channel type is identical with lap；
    Extra adjustment bandwidth is no longer distributed after completing preferential distribution, or remaining adjustment bandwidth is carried out together with other subchannels Distribution.
  11. 11. according to the method described in claim 9, it is characterised in that have more than 1 control channel when containing in certain sub-channels When, adjustment bandwidth, including at least one of are distributed the sub-channel priority：
    Preferential amplitude linearly or nonlinearly increases with the quantity of control channel in subchannel；
    Extra adjustment bandwidth is no longer distributed after completing preferential distribution, or remaining adjustment bandwidth is carried out together with other subchannels Distribution.
  12. 12. according to the method for claim 3, it is characterised in that in N>In the case of 1,
    In any odd number sub-channels, most preceding continuous K RB is control channel, and remaining RB is data channel；And any idol In several subchannels, last continuous K RB is control channel, and remaining RB is data channel；
    In any odd number sub-channels, last continuous K RB is control channel, and remaining RB is data channel；And any idol In several subchannels, most preceding continuous K RB is control channel, and remaining RB is data channel.
  13. 13. according to the method for claim 12, it is characterised in that also including at least one of：
    K typical value is the frequency domain dimension of V2X control messages；
    Allow to be interchangeable the size of above subchannel and position；
    Allow to be interchangeable the data channel of certain sub-channels and the position of control channel；
    Support the merging of adjacent sub-channel.
  14. 14. according to the method for claim 13, it is characterised in that the merging of adjacent sub-channel includes：
    The a width of actual bandwidth taken of S sub-channels of sub-channel after merging；
    In subchannel after merging, the position and total bandwidth of control channel and data channel can believe with being controlled in former S sub-channels The position and total bandwidth of road and data channel are identical or different；
    When position difference, control channel discrete in former S sub-channels is merged into one or two frequency domain and occupies continuous K RB control channel, it is correspondingly situated at subchannel unilateral or bilateral edge.
  15. 15. the method according to any one of claim 1 to 14, it is characterised in that：
    Whether allow to select more sub-channels and/or the optional number of subchannels of maximum that may be present is limited to when allowing：Terminal Pre-configured, high-rise configuration, base station is allocated to terminal or base station is allocated to resource pool.
  16. 16. according to the method for claim 15, it is characterised in that select more sub-channels to be passed allowing the terminal In the case of defeated, in addition at least one of：
    When the message-length for needing to transmit is in given section, terminal selects more sub-channels；
    In the MCS that terminal is recommended using pre-configured MCS lists or acquisition, if recommending MCS or currently available maximum MCS can not be such that business is transmitted in a sub-channels, and terminal selects more sub-channels；
    When terminal selects any single subchannel can not meet performance requirement, include each resource list of any single subchannel When the reception energy of position or the maximum and/or minimum and/or average value of occupancy number of users are not in given threshold value section, terminal More sub-channels are selected, otherwise select a sub-channels.
  17. 17. according to the method for claim 16, it is characterised in that the quantity of selection includes at least one of：Fixed value, Fixed value, the permission business of corresponding message-length can use the minimum value of MCS transmission to recommend MCS or give minimum MCS or maximum.
  18. 18. the method according to any one of claim 1 to 14, it is characterised in that the terminal selects a sub-channels When, if the different subchannel of frequency domain dimension in resource pool be present, the terminal performs at least one of：
    According to service message length or the sub-channels size set of type selecting one, meeting all sub- letters of the size set Transfer resource position is chosen in road；
    Select some sub-channels set of dimensions to close according to service message length, it is ranked up, sequentially determine whether successively full It is enough lower decision condition, if satisfied, selecting the set of dimensions to merge the judgement stopped to other sizes set；If to all set of dimensions The still size set without the condition that meets after judging to terminate is closed, then：Select the size set closest to decision condition；Or, selection row The most preceding size set of sequence.
  19. 19. according to the method for claim 18, it is characterised in that also including at least one of：
    The sort method includes at least one of：Default subchannel size set and type of message and/or message-length Between priority relationship is absolute or carries out selection by probability, the set in same priority is ranked up at random；
    The decision condition includes following any combination in given threshold value section：In the set, each or any one height On channel and/or in subchannel, on each resource units：Maximum and/or minimum and/or average received energy；Highest and/or The minimum and/or average number of users being transmitted；
    Control channel and/or data channel in sub-channel are judged；
    After selected size set, chosen in all subchannels for meeting the size set or the subchannel for meeting decision condition Transfer resource position, transmitting control message in the control channel in transfer resource position, the data in transfer resource position Channel data-message.
  20. 20. the method according to any one of claim 1 to 14, it is characterised in that the terminal selects more sub-channels When, including at least one of：
    The subchannel for whether allowing to select frequency domain discrete can be the build-in attribute that base station is allocated to resource pool, or be configured by base station Configured to terminal, or by terminal is high-rise；
    If the different subchannel of frequency domain dimension in resource pool be present, terminal can be with：Multiplex terminal selects a sub-channels and resource Mechanism during the different subchannel of frequency domain dimension in pond be present, but subchannel size set be changed to subchannel set of dimensions set, One of subchannel set of dimensions is a vector, and the size of the corresponding sub-channels of an element, vector length are big in vector In one and no more than allow terminal select number of sub-channels；
    After terminal selects multiple continuous or discrete subchannels, when sending the control channel of control message, it is allowed to described in use The continuous control channel across subchannel in more sub-channels；
    If allowing terminal to send data on a control channel, selected when containing multiple control channels in selected groups of subchannels A transmission for being controlled message is selected, wherein, any combination of following criterion can be used in the selection to control channel：Based on position Put, every section of continuously available control channel into the multiple subchannel it is continuous one or more snippets frequency domain top edge and/or The distance of lower edge；Based on bandwidth, the bandwidth of every section of continuously available control channel；Based on busy extent, every section continuously available Control channel on average/highest/minimum receiving power and/or use number of users；According to channel width or available channel band Width normalization, wherein available channel bandwidth refer to K RB direct and adjacent data channel in control channel；Selected control channel Afterwards, control message is sent in selected control channel, data-message is sent on data channel and remaining control channel；
    If not allowing terminal to send data on a control channel, control channel multiplexing above criterion is selected, is additionally added With any combination of following criterion：Unchecked control channel is considered as without using rear, minimizes the subchannel used in frequency domain On discontinuous degree；After selected control channel, control message is sent in selected control channel, is sent on a data channel Data-message, control message is sent in remaining control channel or without sending.
  21. 21. the method according to any one of claim 1 to 14, it is characterised in that also include：
    For multiple typical lengths of V2X service messages, when MCS can not match with subchannel size, using it is following at least it One：Add filler at service message beginning or end, be introduced into one group of new V2X the MCS used, wherein, it is new for introducing MCS scheme, when subchannel size has mapping relations with service message length, given service message length is mapped to one To multiple optional subchannel sizes.
  22. 22. the method according to any one of claim 1 to 14, it is characterised in that also include：
    The configuration of subchannel includes：Fixed configurations and/or flexible configuration, wherein,
    For fixed configurations, the subchannel configuration schemes of a variety of fixations are arrived in terminal and base station default one, pass through following parameter Any combination mapping determines the classification of concrete application：Subchannel arrangements type sequence number, resource pool frequency domain bandwidth, scene type, son Channel quantity.The argument section can voluntarily be obtained by terminal and/or base station, partly need base station to be stated to terminal.
    For flexible configuration, be multiplexed the mechanism of fixed configurations, and from base station in change subchannel splitting scheme every time to terminal Configure relevant parameter；Or, from base station configure to terminal/weigh sub-channel when, directly statement is following is combined：Resource pool band Width, number of sub-channels, the bandwidth of all or part of subchannel, the original position of all or part of subchannel, all or part of son The end position of channel.
  23. 23. according to the method for claim 22, it is characterised in that
    In fixed configurations and flexible configuration base station to terminal state parameter, including by parameter carry base station MIB and/or In SIB broadcast message, or parameter is carried and established with terminal after connection in the distinctive unicast messages of terminal that use, or to Terminal is carried in message is configured when configuring resource pool relevant information.
  24. A kind of 24. transmitting device, it is characterised in that including：
    Selecting module, for selecting one or more subchannels in some subframe in resource pool, wherein, the resource pool is drawn It is divided into the subchannel of multiple frequency divisions, all subframes use identical splitting scheme in time domain, or, all subframes use in time domain Independent splitting scheme and different subframes are allowed to use different splitting schemes；
    Transport module, for being transmitted in the one or more of subchannels selected.
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CN109076376A (en) * 2018-07-20 2018-12-21 北京小米移动软件有限公司 Determination method, apparatus, terminal and the storage medium of MCS grade
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CN112350813A (en) * 2020-10-13 2021-02-09 Oppo广东移动通信有限公司 Method and device for determining transmission parameters and terminal equipment
WO2024021056A1 (en) * 2022-07-29 2024-02-01 Oppo广东移动通信有限公司 Sidelink transmission method and terminal

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Application publication date: 20180223