CN107370561A - PSCCH sending method and equipment in a kind of car networking communication - Google Patents
PSCCH sending method and equipment in a kind of car networking communication Download PDFInfo
- Publication number
- CN107370561A CN107370561A CN201610320227.3A CN201610320227A CN107370561A CN 107370561 A CN107370561 A CN 107370561A CN 201610320227 A CN201610320227 A CN 201610320227A CN 107370561 A CN107370561 A CN 107370561A
- Authority
- CN
- China
- Prior art keywords
- pscch
- resource
- prb
- sends
- sent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
- H04L1/0038—Blind format detection
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
PSCCH sending method and equipment in being communicated the invention discloses a kind of car networking, wherein, this method includes：UE PSCCH determined by send the size of resource, it is determined that after PSCCH sends bit number and precoding mode in a subframe, the position for the PSCCH PRB sent is determined in selected PSCCH resource pools, and the symbol sebolic addressing after DFT precodings is mapped on the PRB of determination.Because the present invention is that each UE in being communicated by V2X voluntarily determines the position that PSCCH sends and transmission, so as to improve PSCCH detection performance with limited PSCCH blind checks complexity, the reliability that the PSCCH in V2X communications is received is improved.
Description
Technical field
The present invention relates to mobile communication technology field, and specifically, the present invention relates to car networking (Vehicle to
Vehicle/Perdestrian/Infrastructure/Network, V2X) communication in physical bypass control channel
The sending method and equipment of (Physical Sidelink Control Channel, PSCCH).
Background technology
At present, device-to-device (Device to Device, D2D) communication technology by it in public safety field and general
Huge potential value in logical commercial communication field, is received, and part work(is realized in 3GPP Rel-12 by 3GPP standards
The standardization of energy, mutual discovery and MPS process (In Coverage, IC) including D2D terminals under MPS process scene
Under scene, cell portion covering (Partial Coverage, PC) scene under and without MPS process (Out of Coverage,
OC) the broadcast communication under scene between D2D terminals.
3GPP Rel-12 standards define the pattern of two kinds of D2D broadcast communications at present, referred to as pattern 1 (Mode 1) and
Pattern 2 (Mode 2).Wherein Mode 1 requires that the terminal (UE) for sending D2D broadcast communications must be the covering positioned at cellular network
Under UE (ICUE).UE obtains Mode 1 PSCCH resource pools by receiving the system broadcasts signaling that base station (eNB) is sent
Configuration information, the subframe position that PSCCH is sent to be used in the cycle and each cycle including PSCCH, and per height
Physical Resource Block (Physical Resource Block, PRB) position sent in frame for PSCCH, when support Mode 1 is wide
When the UE for broadcasting communication has data, it is by specific reporting cached state (Buffer Status Report, BSR) to eNB
Invent the special communication resources of Mode 1；Then, the UE detects eNB bypass scheduling before each PSCCH cycles
(Sidelink Grant), obtain and PSCCH and bypass data channel (Physical Sidelink is sent in the PSCCH cycles
Shared CHannel, PSSCH) resource location.In Mode 1, by eNB centralized Control, can avoid different UE it
Between resource conflict.
The UE that D2D broadcast communications are sent by Mode 2 can be ICUE or positioned at cellular network coverage
Outer UE (OCUE).ICUE obtains Mode 2 PSCCH resource pools and the PSSCH associated by receiving eNB system broadcasts signaling
Resource pool configures, and wherein PSSCH resource pools include the subframe position sent in the association PSCCH cycles for PSSCH, and each
The Physical Resource Block position sent in subframe for PSSCH, in each PSCCH cycles, randomly choose PSCCH and associate PSSCH
Transmission resource；OCUE determines that Mode 2 PSCCH resource pools configure with the PSSCH resource pools associated by preconfigured information,
Resource selection mode is identical with ICUE.Under PC scenes, the resource pools of Mode 2 configuration pre-configured OCUE is logical with participating in D2D broadcast
The carrier frequency of cell where the ICUE of letter, system bandwidth and/or time division duplex (TDD) configuration are relevant.
Under above two D2D broadcast communication modes, PSCCH resource pools and PSSCH resource pools or PSSCH resources are one by one
Binding, within each PSCCH cycle, the position of PSCCH resource pools provides in PSSCH resource pools associated with it or PSSCH
Before source, and it is not overlapping between both resources.In addition, D2D terminals work in a half-duplex mode, this will cause together
When the terminal that sends can not receive the signal of other side's transmission.In 3GPP Rel-12, solved by way of resource saltus step above-mentioned
Half-duplex limits.
Within each PSCCH cycles, each PSCCH will be sent twice, and each PSCCH transmission all takes a PRB, uses
It is in the time-frequency location for the PRB that PSCCH first is sent：
The time-frequency location for the PRB that second PSCCH is sent is：
Wherein, s is that PSCCH sends resource index, and Nt is the number of subframes that PSCCH resource pools include, and Nf is PSCCH resources
The PRB numbers that pond includes, Ns=Nt-1.By this resource hop mode, the PSCCH in identical subframe is transmitted first, the
Being offset caused by the subframe position of secondary transfer resource, the amplitude of skew is relevant with the frequency domain position of transfer resource first, so as to
It ensure that the subframe position difference transmitted first in the PSCCH re-transmissions of identical subframe.In addition, transmission can ensure PSCCH twice
The reliability of reception.
Because the D2D of 3GPP Rel-12 Plays communicates mainly for low speed terminal, and to time delay sensitivity and connects
The relatively low V2X business of reliability requirement is received, so the D2D functions of having realized are also far from user's request is met, subsequent
In each versions of 3GPP, the functional framework for further enhancing D2D has been current each communication terminal manufacturer and communication network device
The extensive common recognition of manufacturer.Wherein, based on current D2D broadcast communication mechanisms, support between high-speed equipment, high-speed equipment and low speed
The communication of direct low time delay high reliability between equipment between high-speed equipment and static equipment, i.e. V2X, it is to need preferentially
One of function of standardization.
Compared with existing D2D communications, V2X communication environments have bigger uncertainty.First, V2X communicating requirements are supported
Highest UE speed of related movements for 500 kilometers per hour (km/h), highest carrier frequency is 6GHz, and high movement velocity and high carrier frequency draw
The Doppler frequency shift entered will cause serious inter-sub-carrier interference.Secondly, UE density communicates far above D2D in V2X communications, because
This, can be more serious with interior leakage interference, under the transmission modes of Mode 2, it is easier to occurs to send the collision of resource.Again,
The V2X types of service of different priorities in V2X communications be present, the V2X types of service of different priorities are wanted to reception reliability
Ask also different.In summary many factors, it is difficult to meet with single PSCCH transmission means in V2X communication environments
PSCCH reception reliability requirement under different transmission environments.And how to solve problem above, at present still without preferable technical side
Case.
The content of the invention
PSCCH sending method in being communicated the embodiments of the invention provide a kind of V2X, it is possible to increase in V2X communications
The reliability that PSCCH is received.
The embodiment of the present invention additionally provides the transmission equipment of PSCCH in V2X communications a kind of, it is possible to increase in V2X communications
PSCCH receive reliability.
According to above-mentioned purpose, of the invention being achieved in that is such：
A kind of physical bypass control channel PSCCH sending method in car networking communication, it is characterised in that this method bag
Include：
Determine that PSCCH sends the size of resource；
Size determination PSCCH in a subframe of resource transmission bit number is sent according to PSCCH, determines that PSCCH is sent out
The discrete Fourier transform DFT precoding modes sent；
The position for the PSCCH Physical Resource Block PRB sent is determined in selected PSCCH resource pools, and DFT is pre-
PSCCH after coding sends symbol sebolic addressing and is mapped on the PRB of determination.
It is preferred that the determination PSCCH sends the size of resource, including：
Determine that the PSCCH sends the size of resource according to the parameter of the current multidate information of terminal UE, wherein, the UE works as
The parameter of preceding multidate information includes at least one of：
What UE absolute movement speed, UE current carrier frequency, the type of UE current reference synchronisation sources, UE were detected can
The priority for the car networking type of service that average noise level and UE for the PSCCH PRB sent are sent.
It is preferred that the transmission bit number of the PSCCH in a subframe is：
It is equal with the bit number that determination PSCCH transmissions resource can carry；
Or the determination PSCCH sends the half for the bit number that resource can carry.
It is preferred that when the transmission bit number of the PSCCH in a subframe can for determination PSCCH transmission resources
When carrying the half of bit number, the process of the determination DFT precoding modes is：
The length for determining DFT precodings isAnd symbol directly is sent to the PSCCH after modulation and layer mapping
Number sequence carries out DFT pre-encode operations；
Or the length of determination DFT precodings isBefore DFT pre-encode operations are carried out, modulation and layer are reflected
PSCCH after penetrating sends symbol sebolic addressing every position zero insertion so that the length that PSCCH sends symbol sebolic addressing is equal to
Wherein,The subcarrier number included by a PRB, Sr are that the PSCCH of the determination sends the big of resource
It is small.
It is preferred that when the length for determining DFT precodings isWhen, the PSCCH hairs after the precoding by DFT
Sending symbol sebolic addressing to be mapped on the PRB of determination includes：
PSCCH after DFT precodings is sent before symbol sebolic addressing is mapped on Sr/2 PRB, after DFT precodings
PSCCH sends symbol sebolic addressing and is mapped on rear Sr/2 PRB.
It is preferred that the position for the PSCCH PRB sent is determined in selected PSCCH resource pools, including：
Indicated according to eNB signaling or according to channel detection result, determine to be used in selected PSCCH resource pools
The position for the PRB that PSCCH is sent.
It is preferred that the original position of the PRB sent for PSCCH meets mod (Index, Sr)=0, wherein Index
For index values of the PRB in the PRB set of PSCCH resource pools, Sr is that the PSCCH of the determination sends the size of resource.
PSCCH dispensing device in a kind of car networking communication, including：PSCCH sends resource size determining module, at symbol
Module and physical resource mapping block are managed, wherein：
PSCCH sends resource size determining module, for sending the size of resource according to determination PSCCH, it is determined that at one
PSCCH transmission bit number in subframe；
Symbol processing module, determine that DFT prelists for the transmission bit number based on the identified PSCCH in a subframe
After code mode, DFT precodings are carried out to the symbol sebolic addressing after modulation and layer mapping；
Physical resource mapping block is used to for the symbol sebolic addressing after DFT precodings to be mapped to the physics sent for PSCCH
Resource.
Technical scheme proposed by the present invention, UE PSCCH determined by send the size of resource, it is determined that in a subframe
After interior PSCCH sends bit number and precoding mode, DFT precodings are carried out to the symbol sebolic addressing after modulation and layer mapping, so
Determined afterwards in selected PSCCH resource pools for the PSCCH physical resource positions sent and by the symbol sebolic addressing after precoding
Determined by being mapped on physical resource.Because the present invention is the position that each UE in being communicated by V2X voluntarily determines that PSCCH is sent
Put and send, so as to improve PSCCH detection performance with limited PSCCH blind checks complexity, improve in V2X communications
The reliability that PSCCH is received.
Brief description of the drawings
Fig. 1 is the sending method flow chart of PSCCH in V2X provided in an embodiment of the present invention communications；
Fig. 2 is the schematic diagram of DFT precodings mode two that the specific embodiment of the invention two provides；
Fig. 3 is the repetition resource mapping method schematic diagram that the specific embodiment of the invention two provides；
Fig. 4 is the transmission device structure schematic diagram of PSCCH in V2X provided in an embodiment of the present invention communications.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
The present invention is described in further detail.
V2X communication in, relative to current D2D communicate, to need support higher UE movement velocitys, higher carrier frequency,
Higher user density, and different V2X service priority, so as to cause V2X to use single PSCCH senders in communicating
Formula meets the reception reliability requirement in all environment.Therefore, the UE of the present invention is according to current translational speed, working carrier frequency,
Synchronous Source Type, send type of service priority etc. and show that the parameter of the current multidate informations of UE determines that the PSCCH used sends money
Source size, resource size is then sent according to selected PSCCH, determine PSCCH transmission bit number, sending bit number can be with complete
Resource size is sent with PSCCH entirely to match, or send resource for PSCCH to carry the half of bit number, by corresponding
After DFT precodings and the mapping of follow-up physical resource, the effect that dynamic adjusts PSCCH code checks is finally reached.In this manner it is possible to
The complexities of limited PSCCH blind checks improves PSCCH detection performance, improve the PSCCH in V2X communications receive it is reliable
Property.
Fig. 1 is the sending method flow chart of PSCCH in V2X provided in an embodiment of the present invention communications, and it is concretely comprised the following steps：
Step 110：UE determines that PSCCH sends the size Sr of resource.
In this step, in, the size of PSCCH transmission resources refers to the number for the PSCCH PRB sent, UE
PSCCH sends the size Sr of resource using one or more functions in following parameter as according to determination：
1.UE absolute movement speed Va；
Carrier frequency Fc current 2.UE；
The type Sy of 3.UE current reference synchronisation sources, synchronous Source Type include：ENB, GLONASS (GNSS),
The direct UE for being synchronized to eNB or GNSS, indirect synchronization to eNB or GNSS UE etc.；
What 4.UE was detected can be used for the PRB of PSCCH transmissions average noise level Ir；
The priority P s for the V2X types of service that 5.UE is sent；
The PRB that can be used for PSCCH to send that wherein UE is detected refer to the resource detection step that UE defined according to standard and
Mode, it is determined that meeting that PSCCH sends the PRB of resource selection condition.The present invention does not limit described resource detection step, and resource is visited
Survey mode and PSCCH send resource selection condition.The average noise level Ir can be UE detect can be used for PSCCH send out
The average value for the ability on PRB sent.
In this step, what the input parameter of above-mentioned function was actually reacted is the current multidate informations of UE, because UE
Multidate information not limited to this, so merely just giving the above-mentioned possible input parameter in function part.
Step 120：UE determines that PSCCH transmission bit number and discrete Fourier transform (DFT) prelist in a subframe
Code mode.
PSCCH transmission bit number refers to by channel coding and rate-matched (Rate Matching) in one subframe
The bit numbers that are included of the latter PSCCH.Wherein, the PSCCH bit number that sends sends resource with PSCCH in a subframe
Size Sr is relevant, and the bit number can be equal to the bit number that can be carried on Sr PRB, or for that can be carried on Sr PRB
The half of bit number.
When the PSCCH in a subframe, which sends bit number, is equal to the bit number that can be carried on Sr PRB, DFT prelists
The DFT precoding modes for the PSCCH that (refers to 3GPP Rel-13 standards, similarly hereinafter) are identical in the mode and existing standard of code.When a son
It is when can carry the half of bit number on Sr PRB that PSCCH in frame, which sends bit number, then is realized according to a kind of of the present invention
Mode (DFT precodings mode one), the length of now DFT precodings isAnd directly modulation and layer are mapped
Symbol sebolic addressing after (Layer Mapping) carries out DFT pre-encode operations；According to another implementation (DFT of the present invention
Precoding mode two), the length of now DFT precodings should beNow before DFT pre-encode operations are carried out, reply
Symbol sebolic addressing after modulation and layer mapping is every position zero insertion so that the length of symbol sebolic addressing is equal toWherein,For one
The subcarrier number that individual PRB is included.
Step 130：Determine the Sr positions for the PSCCH PRB sent in PSCCH resource pools selected UE, and by DFT
Symbol sebolic addressing after precoding is mapped on the PRB of determination.
In this step, PSCCH resource pools gather two parts by the sub-frame set of resource pool and the PRB of PSCCH resource pools
Composition, wherein sub-frame set refer to the subframe included in PSCCH resource pools, and PRB set refers to PSCCH resource pools in each subframe
In the PRB that includes.UE can be indicated according to eNB signaling or be determined to use in PSCCH resource pools according to channel detection result
Subframe where the Sr PRB that a PSCCH is sent, and residing frequency domain position in the subframe.
In order to further reduce the detection complexity for the UE for receiving PSCCH, rising for above-mentioned Sr PRB can be further limited
Beginning position, for example, the PRB for only meeting mod (Index, Sr)=0 from index value starts, wherein Index is PRB in PSCCH resources
Index value in the PRB set in pond.
If using DFT precodings mode one in step 120, the symbolic number after DFT precodings is only that PSCCH sends money
Source can carry the half of symbolic number, before now the symbol sebolic addressing after DFT precodings should be first mapped toIt is individual
PSCCH is sent in resource, after then same symbol sequence mapping is arrivedIndividual PSCCH is sent in resource.
Specified otherwise is needed, the present invention does not limit the execution sequence of above-mentioned steps.
For the ease of understanding the present invention, with reference to concrete application situation, with the pattern of equipment room interaction in the present invention
State technical scheme be described further it is specific as follows：
Specific embodiment one：
In the present embodiment, PSCCH sends bit number in a subframe and PSCCH sends the bit number that resource can carry
It is identical.This implementation comprises the following steps：
Step 210：UE determines that PSCCH sends the size Sr of resource.
According to a kind of implementation (PSCCH sends resource judgment mode one) of the present embodiment, PSCCH sends the big of resource
It is small to be determined by Va and Fc.When standard supports that three kinds of different PSCCH send resource size S1, S2 and S3, such as S1
=1, S2=2, S3=4, if Va × Fc/C ＜ T11, then it represents that UE currently may be compared with relative to the Doppler frequency shift for receiving UE
Low, then it is S1 PRB that PSCCH, which sends resource size,；If T11≤Va × Fc/C ＜ T12, then it represents that UE is currently relative to reception
UE Doppler frequency shift is larger, then it is S2 PRB that PSCCH, which sends resource size,；If T12≤Va × Fc/C, then it represents that UE works as
The preceding Doppler frequency shift relative to reception UE may be very high, then it is S3 PRB that PSCCH, which sends resource size,.Wherein, C is freely
The spread speed of light in space, T11 and T12 value can be defined by standard or eNB configurations.
When standard supports that two a variety of different PSCCH send resource sizes, i.e. S4 and S5, for example, S4=1 or 2, S5=2 and
When 4, ifThen represent that UE currently may be relatively low relative to the Doppler frequency shift for receiving UE, then PSCCH is sent out
It is S4 PRB to send resource size；IfThen represent UE currently relative to receive UE Doppler frequency shift compared with
Greatly, then it is S5 PRB that PSCCH, which sends resource size,.Wherein, C is the spread speed of light in free space,Value can be by
Standard defines or eNB configurations.
According to another implementation (PSCCH sends resource judgment mode two) of the present invention, PSCCH sends the big of resource
It is small can be by absolute movement speed current UE, carrier frequency current UE and UE synchronous Source Type joint determine.Work as standard
When supporting that three kinds of different PSCCH send resource size S1, S2 and S3, if Va × Fc/C+ α × Fc ＜ T21, PSCCH hairs
It is S1 PRB to send resource size；If T21≤Va × Fc/C+ α × Fc ＜ T22, then it represents that UE is currently relative to the more of reception UE
General Le frequency displacement is larger, then it is S2 PRB that PSCCH, which sends resource size,；If T22≤Va × Fc/C+ α × Fc, then it represents that UE works as
The preceding Doppler frequency shift relative to reception UE may be very high, then it is S3 PRB that PSCCH, which sends resource size,.
When two kinds of different PSCCH transmission resource sizes of standard support, i.e. S4 and S5, if
It is S4 PRB that then PSCCH, which sends resource size,；IfThen represent UE currently relative to reception
UE Doppler frequency shift is larger, then it is S5 PRB that PSCCH, which sends resource size,.
Wherein, C is the spread speed of light in free space, and T21 and T22 value can be defined by standard or eNB configurations, α
The frequency shift (FS) ratio that synchronisation source introduces is represented, the value can be defined by standard or eNB configurations.For example, if UE synchronisation sources are
GNSS, then α=0ppm；If UE synchronisation sources are eNB, α=0.05ppm；If UE synchronisation sources are the UE for being synchronized to eNB, α
=0.15ppm；If UE synchronisation sources are the UE for being synchronized to GNSS, α=0.1ppm.
According to another implementation (PSCCH sends resource judgment mode three) of the present invention, PSCCH sends the big of resource
It is small to be determined by the priority P s of the UE V2X types of service sent, if for example, Ps ＜ T31, it is big that PSCCH sends resource
Small is S1 PRB, if T31≤Ps ＜ T32, it is S2 PRB that PSCCH, which sends resource size, if T32≤Ps, PSCCH
Transmission resource size is S3 PRB.
It should be strongly noted that UE can determine that PSCCH is sent according to Ps and current possible Doppler frequency shift simultaneously
The size of resource, if for example, the V2X types of service that current UE is sent are limit priority, the maximum PSCCH of UE selections is sent out
Resource is sent, conversely, then according to Doppler frequency shift, i.e. PSCCH sends resource judgment mode one or two and judges that PSCCH sends resource
Size.
Step 220：UE determines PSCCH transmission bit number and DFT precoding modes in a subframe.
In the present embodiment, PSCCH transmission bit number is equal to PSCCH and sends the bit number sum that resource can carry.DFT
The mode of precoding is identical with the DFT precoding modes of PSCCH in existing standard.
Step 230：UE determines the position for the PSCCH Sr PRB sent and reflects the symbol sebolic addressing after DFT precodings
It is mapped on the PRB of determination.
In the present embodiment, UE can be indicated according to eNB signaling or be determined to be used for one according to channel detection result
The position for the Sr PRB that PSCCH is sent.In the present embodiment, when the symbol sebolic addressing after DFT precodings is mapped to physics by UE
The mode of frequency resource is identical with the mapping mode of PSCCH in existing standard.
So far, the present embodiment terminates.By the method for this implementation, UE can according to current translational speed, working carrier frequency,
Synchronous Source Type etc. shows that the dynamic state of parameters of the current multidate informations of UE determines that the PSCCH used sends resource size, according to selected
PSCCH send resource size, determine PSCCH transmission bit number, be allowed to send resource size with PSCCH completely and match, most
Reach the effect that dynamic adjusts PSCCH code checks eventually.However, according to the method for this implementation, the length and PSCCH of DFT precodings are sent out
Send the number of sub carrier wave in resource on a symbol equal, therefore, for all receiving terminal UE, it is necessary to be based on all possible
PSCCH sends resource size, blind check PSCCH, increases the complexity of detection to a certain extent.
Specific embodiment two：
In the present embodiment, PSCCH sends bit number in a subframe and PSCCH sends the bit number that resource can carry
It can differ.This implementation comprises the following steps：
Step 310：UE determines that PSCCH sends the size Sr of resource.
In this implementation, UE determines that Sr mode and step 210 are identical.
Step 320：UE determines PSCCH transmission bit number and DFT precoding modes in a subframe.
In the present embodiment, if Sr is more than a PRB, PSCCH transmission bit number can be that Sr PRB can be carried
Bit number half.For example, if standard supports three kinds of different PSCCH to send resource size, i.e. S1, S2 and S3, work as Sr
For S1 and S2 when, the bit number that PSCCH transmission bit number and Sr PRB can carry is equal, when Sr is S3, PSCCH's
Send the half that bit number is the bit number that Sr PRB can be carried.If standard supports two kinds of different PSCCH to send resource
During size, i.e. S4 and S5, if Sr is S4, the bit number that PSCCH transmission bit number and Sr PRB can carry is equal, when
When Sr is S5, PSCCH transmission bit number is the half for the bit number that Sr PRB can be carried.Without loss of generality, it is assumed that this step
The PSCCH of determination transmission bit number is in rapid
When the bit number that PSCCH is sent sends the half of the bit number that can carry of resource for PSCCH, it is assumed that modulation and
Layer mapping after PSCCH symbol sebolic addressings beWherein,(assuming that
PSCCH is modulated using QPSK).Then according to a kind of method of the present embodiment, DFT precodings mode one can be used, directly to this
Sequence carries out DFT pre-encode operations, i.e.,：
Wherein,
According to another method of the present embodiment, DFT precodings mode two can be used, as shown in Fig. 2 Fig. 2 is this hair
The schematic diagram of DFT precodings mode two that bright specific embodiment two provides, it is rightAfter being spaced zero insertion
Symbol sebolic addressingProgress DFT pre-encode operations, pre-encode operation, i.e.,：
Wherein,(assuming that PSCCH is modulated using QPSK),
Step 330：UE determines the position for the PSCCH Sr PRB sent, then by the symbol sequence after DFT precodings
Row are mapped on the PRB of determination.
In the present embodiment, UE can be indicated according to eNB signaling or be determined to be used for one according to channel detection result
The position for the Sr PRB that PSCCH is sent.
It is equal that if PSCCH is sent in step 320 bit number and PSCCH send the bit number that resource can carry, or
The bit number that person PSCCH is sent sends the half for the bit number that resource can carry for PSCCH, and using DFT precoding sides
Symbol sebolic addressing after DFT precodings is mapped to the mode of physical time-frequency resource and reflecting for PSCCH in existing standard by formula two, UE
It is identical to penetrate mode.If the bit number that PSCCH is sent sends the half for the bit number that resource can carry for PSCCH, and adopts
With DFT precodings mode one, then UE is by the way of resource impact is repeated, first by sequence
, then in the same way, will before mapping mode according to PSCCH in existing standard is mapped on Sr/2 PRBIt is mapped on rear Sr/2 PRB, is carried as shown in figure 3, Fig. 3 is the specific embodiment of the invention two
The repetition resource mapping method schematic diagram of confession.
So far, the present embodiment terminates.By the method for this implementation, UE determines that PSCCH transmission bit number is PSCCH hairs
Resource is sent to carry the half of bit number, after corresponding DFT precodings and physical resource mapping, PSCCH sends resource
First half it is identical with the PSCCH that latter half is sent, for the preferable receiving terminal of part of links environment, based on two
When/mono- PSCCH sends resource size progress PSCCH blind checks, it is possible to the PSCCH is successfully decoded, so as to a certain degree
On reduce receiving terminal UE PSCCH detection complexity.
As shown in figure 4, the transmission equipment that the embodiment of the present invention also provides PSCCH in a kind of V2X communications includes：PSCCH is sent out
Resource size determining module, Symbol processing module and PSCCH sending modules are sent, wherein：
PSCCH sends resource size determining module, for determining that the resource that PSCCH is sent is big according to the current states of UE
It is small, and further determine that PSCCH sends bit number；
Symbol processing module, determine that DFT prelists for the transmission bit number based on the identified PSCCH in a subframe
Code mode, DFT precodings then are carried out to the symbol sebolic addressing after modulation and layer mapping；
Physical resource mapping block, for the symbol sebolic addressing after DFT precodings to be mapped into the physics sent for PSCCH
Resource.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
Preferred embodiment is lifted above, the object, technical solutions and advantages of the present invention is further described, institute
It should be understood that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all the present invention's
Spirit and principle within, all any modification, equivalent and improvement made etc., should be included in protection scope of the present invention it
It is interior.
Claims (8)
1. physical bypass control channel PSCCH sending method in a kind of car networking communication, it is characterised in that this method includes：
Determine that PSCCH sends the size of resource；
Size determination PSCCH in a subframe of resource transmission bit number is sent according to PSCCH, determines what PSCCH was sent
Discrete Fourier transform DFT precoding modes；
Determine the position for the PSCCH Physical Resource Block PRB sent in selected PSCCH resource pools, and by DFT precodings
PSCCH afterwards sends symbol sebolic addressing and is mapped on the PRB of determination.
2. the method as described in claim 1, it is characterised in that the determination PSCCH sends the size of resource, including：
Determine that the PSCCH sends the size of resource according to the parameter of the current multidate information of terminal UE, wherein, the UE is currently moved
The parameter of state information includes at least one of：
What UE absolute movement speed, UE current carrier frequency, the type of UE current reference synchronisation sources, UE were detected can be used for
The priority for the car networking type of service that the average noise level and UE for the PRB that PSCCH is sent are sent.
3. the method as described in claim 1, it is characterised in that the transmission bit number of the PSCCH in a subframe is：
It is equal with the bit number that determination PSCCH transmissions resource can carry；
Or the determination PSCCH sends the half for the bit number that resource can carry.
4. method as claimed in claim 3, it is characterised in that when the transmission bit number of the PSCCH in a subframe is
When the determination PSCCH transmissions resource can carry the half of bit number, the process of the determination DFT precoding modes is：
The length for determining DFT precodings isAnd symbol sebolic addressing directly is sent to the PSCCH after modulation and layer mapping
Carry out DFT pre-encode operations；
Or the length of determination DFT precodings isBefore DFT pre-encode operations are carried out, it is mapped to modulation and layer
PSCCH afterwards sends symbol sebolic addressing every position zero insertion so that the length that PSCCH sends symbol sebolic addressing is equal to
Wherein,The subcarrier number included by a PRB, Sr are that the PSCCH of the determination sends the size of resource.
5. method as claimed in claim 4, it is characterised in that when it is determined that the length of DFT precodings isWhen, it is described
PSCCH after DFT precodings, which is sent symbol sebolic addressing and is mapped on the PRB of determination, to be included：
PSCCH after DFT precodings is sent before symbol sebolic addressing is mapped on Sr/2 PRB, by the PSCCH after DFT precodings
Symbol sebolic addressing is sent to be mapped on rear Sr/2 PRB.
6. the method as described in claim 1, it is characterised in that determine that being used for PSCCH sends in selected PSCCH resource pools
PRB position, including：
Indicated according to eNB signaling or according to channel detection result, determine to be used for PSCCH in selected PSCCH resource pools
The PRB of transmission position.
7. the method as described in claim 1 or 6, it is characterised in that the original position of the PRB sent for PSCCH expires
Sufficient mod (Index, Sr)=0, wherein Index are index values of the PRB in the PRB set of PSCCH resource pools, and Sr is described true
Fixed PSCCH sends the size of resource.
A kind of 8. PSCCH dispensing device in car networking communication, it is characterised in that including：PSCCH sends resource size and determines mould
Block, Symbol processing module and physical resource mapping block, wherein：
PSCCH sends resource size determining module, for sending the size of resource according to determination PSCCH, it is determined that in a subframe
Interior PSCCH transmission bit number；
Symbol processing module, DFT precoding sides are determined for the transmission bit number based on the identified PSCCH in a subframe
After formula, DFT precodings are carried out to the symbol sebolic addressing after modulation and layer mapping；
Physical resource mapping block is used to for the symbol sebolic addressing after DFT precodings to be mapped to the physical resource sent for PSCCH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320227.3A CN107370561A (en) | 2016-05-13 | 2016-05-13 | PSCCH sending method and equipment in a kind of car networking communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320227.3A CN107370561A (en) | 2016-05-13 | 2016-05-13 | PSCCH sending method and equipment in a kind of car networking communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107370561A true CN107370561A (en) | 2017-11-21 |
Family
ID=60304203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610320227.3A Pending CN107370561A (en) | 2016-05-13 | 2016-05-13 | PSCCH sending method and equipment in a kind of car networking communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107370561A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166198A (en) * | 2018-02-12 | 2019-08-23 | 北京三星通信技术研究有限公司 | By-passing signal sending method and equipment |
| CN110731117A (en) * | 2019-01-11 | 2020-01-24 | Oppo广东移动通信有限公司 | Method, terminal device and network device for sidestream communication |
| WO2020061755A1 (en) * | 2018-09-25 | 2020-04-02 | Oppo广东移动通信有限公司 | Method for indicating resource mapping approach and related product |
| WO2020068415A1 (en) * | 2018-09-27 | 2020-04-02 | Qualcomm Incorporated | Variable size physical sidelink control channel and aggregation |
| WO2020077739A1 (en) * | 2018-10-19 | 2020-04-23 | Oppo广东移动通信有限公司 | Parameter configuration method, terminal device, and storage medium |
| WO2020088227A1 (en) * | 2018-11-02 | 2020-05-07 | 北京展讯高科通信技术有限公司 | Sidelink transmission method, and terminal and computer-readable storage medium |
| WO2020135486A1 (en) * | 2018-12-29 | 2020-07-02 | 展讯半导体(南京)有限公司 | Information transmission method for sidelink, and user equipment and computer-readable storage medium |
| CN111567108A (en) * | 2018-09-28 | 2020-08-21 | 联发科技（新加坡）私人有限公司 | Vehicular wireless communication technology side link communication |
| CN112398511A (en) * | 2019-08-16 | 2021-02-23 | 华为技术有限公司 | Data sending method, data receiving method and device |
| WO2021031020A1 (en) * | 2019-08-16 | 2021-02-25 | 富士通株式会社 | Sidelink synchronisation signal sending method, apparatus and system |
| CN112806076A (en) * | 2018-09-27 | 2021-05-14 | 中兴通讯股份有限公司 | Method and apparatus for configuring sidelink channel resource units |
| CN115133965A (en) * | 2021-03-24 | 2022-09-30 | 维沃移动通信有限公司 | Information sending method and equipment |
| CN117394952A (en) * | 2018-07-06 | 2024-01-12 | 华为技术有限公司 | Method and device for transmitting coded bits |
| US11943097B2 (en) | 2018-10-19 | 2024-03-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Parameter configuration method, terminal device and storage medium |
-
2016
- 2016-05-13 CN CN201610320227.3A patent/CN107370561A/en active Pending
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166198A (en) * | 2018-02-12 | 2019-08-23 | 北京三星通信技术研究有限公司 | By-passing signal sending method and equipment |
| CN117394952A (en) * | 2018-07-06 | 2024-01-12 | 华为技术有限公司 | Method and device for transmitting coded bits |
| CN112369068B (en) * | 2018-09-25 | 2022-01-04 | Oppo广东移动通信有限公司 | Resource mapping mode indication method and related product |
| WO2020061755A1 (en) * | 2018-09-25 | 2020-04-02 | Oppo广东移动通信有限公司 | Method for indicating resource mapping approach and related product |
| CN112369068A (en) * | 2018-09-25 | 2021-02-12 | Oppo广东移动通信有限公司 | Resource mapping mode indication method and related product |
| WO2020068415A1 (en) * | 2018-09-27 | 2020-04-02 | Qualcomm Incorporated | Variable size physical sidelink control channel and aggregation |
| CN112740607A (en) * | 2018-09-27 | 2021-04-30 | 高通股份有限公司 | Variable size physical sidelink control channel and aggregation |
| US11956758B2 (en) | 2018-09-27 | 2024-04-09 | Zte Corporation | Method and apparatus for configuration of sidelink channel resource units |
| CN112806076A (en) * | 2018-09-27 | 2021-05-14 | 中兴通讯股份有限公司 | Method and apparatus for configuring sidelink channel resource units |
| US11039426B2 (en) | 2018-09-27 | 2021-06-15 | Qualcomm Incorporated | Variable size physical sidelink control channel and aggregation |
| CN112740607B (en) * | 2018-09-27 | 2022-06-07 | 高通股份有限公司 | Method and apparatus for physical sidelink control channel and aggregation |
| US11582730B2 (en) | 2018-09-27 | 2023-02-14 | Qualcomm Incorporated | Variable size physical sidelink control channel and aggregation |
| CN112806076B (en) * | 2018-09-27 | 2023-02-28 | 中兴通讯股份有限公司 | Method and apparatus for configuring sidelink channel resource units |
| CN111567108A (en) * | 2018-09-28 | 2020-08-21 | 联发科技（新加坡）私人有限公司 | Vehicular wireless communication technology side link communication |
| CN111567108B (en) * | 2018-09-28 | 2023-09-08 | 联发科技（新加坡）私人有限公司 | Method for side link synchronization and user equipment thereof |
| US11943097B2 (en) | 2018-10-19 | 2024-03-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Parameter configuration method, terminal device and storage medium |
| WO2020077739A1 (en) * | 2018-10-19 | 2020-04-23 | Oppo广东移动通信有限公司 | Parameter configuration method, terminal device, and storage medium |
| CN111148226B (en) * | 2018-11-02 | 2022-05-31 | 北京紫光展锐通信技术有限公司 | Side link transmission method, terminal and computer readable storage medium |
| CN111148226A (en) * | 2018-11-02 | 2020-05-12 | 北京展讯高科通信技术有限公司 | Side link transmission method, terminal and computer readable storage medium |
| WO2020088227A1 (en) * | 2018-11-02 | 2020-05-07 | 北京展讯高科通信技术有限公司 | Sidelink transmission method, and terminal and computer-readable storage medium |
| US12004123B2 (en) | 2018-11-02 | 2024-06-04 | Beijing Unisoc Communications Technology Co., Ltd. | Sidelink transmission method, and terminal and computer-readable storage medium |
| CN111385075B (en) * | 2018-12-29 | 2021-04-20 | 展讯半导体(南京)有限公司 | Side link information transmission method, user terminal and computer readable storage medium |
| CN111385075A (en) * | 2018-12-29 | 2020-07-07 | 展讯半导体(南京)有限公司 | Side link information transmission method, user terminal and computer readable storage medium |
| US12010685B2 (en) | 2018-12-29 | 2024-06-11 | Spreadtrum Semiconductor (Nanjing) Co., Ltd. | Information transmission method for sidelink, and user equipment and computer-readable storage medium |
| WO2020135486A1 (en) * | 2018-12-29 | 2020-07-02 | 展讯半导体(南京)有限公司 | Information transmission method for sidelink, and user equipment and computer-readable storage medium |
| CN110731117B (en) * | 2019-01-11 | 2020-11-27 | Oppo广东移动通信有限公司 | Method, terminal device and network device for sidestream communication |
| CN112333827A (en) * | 2019-01-11 | 2021-02-05 | Oppo广东移动通信有限公司 | Method, terminal device and network device for sidestream communication |
| US11632780B2 (en) | 2019-01-11 | 2023-04-18 | Guangdong Oppo Mobile Telecommunications Corp, Ltd. | Sidelink communication method, terminal device and network device |
| WO2020143065A1 (en) * | 2019-01-11 | 2020-07-16 | Oppo广东移动通信有限公司 | Sidelink communication method, terminal device and network device |
| CN110731117A (en) * | 2019-01-11 | 2020-01-24 | Oppo广东移动通信有限公司 | Method, terminal device and network device for sidestream communication |
| CN112398511B (en) * | 2019-08-16 | 2022-05-13 | 华为技术有限公司 | Data sending method, data receiving method and device |
| CN112398511A (en) * | 2019-08-16 | 2021-02-23 | 华为技术有限公司 | Data sending method, data receiving method and device |
| WO2021031020A1 (en) * | 2019-08-16 | 2021-02-25 | 富士通株式会社 | Sidelink synchronisation signal sending method, apparatus and system |
| CN115133965B (en) * | 2021-03-24 | 2023-09-15 | 维沃移动通信有限公司 | Information sending method and equipment |
| CN115133965A (en) * | 2021-03-24 | 2022-09-30 | 维沃移动通信有限公司 | Information sending method and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107370561A (en) | PSCCH sending method and equipment in a kind of car networking communication | |
| CN107277922B (en) | Method and equipment for transmitting control channel and data channel in V2X communication | |
| CN106470499B (en) | Method and equipment for transmitting and receiving scheduling information in D2D communication | |
| CN105981453B (en) | Method and system for initial synchronisation and conflict avoidance under no network coverage in device-to-device communication | |
| CN101771513B (en) | Method and apparatus for improving ack/nack bundling | |
| EP3886490B1 (en) | Transmission method and apparatus based on direct link | |
| US11929825B2 (en) | Method and apparatus for transmitting and receiving sidelink synchronization signal in wireless communication system | |
| US20200153574A1 (en) | Method and apparatus for configuring parameters in vehicle-to-everything system | |
| JP2022522390A (en) | User device and wireless communication method | |
| US20130077574A1 (en) | Resource Allocation and Signaling for Aperiodic Sounding | |
| CN106063151B (en) | A kind of up-link access method, apparatus and system | |
| CN108243457A (en) | Exempt from the method, terminal and the network equipment of authorized transmissions | |
| US10945257B2 (en) | Data sending method, terminal device, and access network device | |
| CN107734710B (en) | Data transmission method and device | |
| CN103002579A (en) | Control information transmission method, base station and user equipment | |
| CN109964496B (en) | Method and device in wireless communication | |
| EP2830381A2 (en) | Method for configuring timing resource in device to device communication | |
| US20210315018A1 (en) | Method and apparatus for intra-ue prioritization considering ul grant received in random access response | |
| CN104038456A (en) | Communication method for direct communication between devices and communication nodes | |
| US20210274558A1 (en) | Transmission device, reception device, transmission method, and reception method | |
| CN111436127A (en) | Reference signal sending method and device | |
| Kim et al. | Low latency random access for small cell toward future cellular networks | |
| CN111726770B (en) | Communication method and device thereof | |
| WO2020078166A1 (en) | Method for transmitting synchronization signal and communication device | |
| WO2021063375A1 (en) | Feedback information processing method and communication apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171121 |