CN106658716A - Method and apparatus for reducing delay in vehicle-to-vehicle communication - Google Patents
Method and apparatus for reducing delay in vehicle-to-vehicle communication Download PDFInfo
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- CN106658716A CN106658716A CN201510724445.9A CN201510724445A CN106658716A CN 106658716 A CN106658716 A CN 106658716A CN 201510724445 A CN201510724445 A CN 201510724445A CN 106658716 A CN106658716 A CN 106658716A
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004891 communication Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 101
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- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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Abstract
An embodiment of the disclosure provides a method and apparatus for reducing the delay in vehicle-to-vehicle communication. The method comprises the steps of allocating separate scheduling allocation resource pools for messages with different delay requirements; and performing frequency division multiplexing of a scheduling allocation resource pool for a first message requiring a lower delay and a corresponding data resource pool, to reduce the transmission delay of the first message. Compared with the prior art, the embodiment of the disclosure are effective in reducing the transmission delay of the emergency message, thus satisfying the delay requirements for vehicle safety message communication.
Description
Technical field
Embodiment of the disclosure relates in general to wireless communication field, and in particular to one kind is used in car
The method and apparatus for reducing postponing in vehicle communication.
Background technology
For the communication of vehicle safety message, postpone to require what is be strict.For example,
For periodic vehicle safety message, it is most postpone to require in 100ms or
In more scopes.In the communication of vehicle to vehicle (i.e. V2V), most stringent of delay will
The 20ms that Seeking Truth is used in the case of pre-impact warning.
In the version 12 (R12) of the Long Term Evolution (LTE) of third generation partner program (3GPP)
Specified in device-to-device (D2D) direction communication can not meet vehicle communication delay will
Ask.Therefore, there is a need in the art for being strengthened on the basis of D2D direction communications, with satisfaction
State the delay requirement for vehicle safety message communicating.
The content of the invention
Embodiment of the disclosure aims to provide a kind of for reducing postponing in vehicle-to-vehicle communication
Method and apparatus.
According to the first aspect of the disclosure, there is provided one kind is used to be dropped in vehicle-to-vehicle communication
The method of low latency, including：For the message distribution individually scheduling required with different delays
Distribution resource pool；And will be used to require the dispatching distribution resource pool of the first message compared with low latency
Frequency division multiplexing is carried out with corresponding data resource pond, to reduce the transmission delay of the first message.
In certain embodiments, dispatching distribution resource pool is used to utilize thing in the dispatching distribution cycle
Manage side link control channel to transmit the control information of message, and data resource pond is used in institute
State the data sheet for transmitting the message in the dispatching distribution cycle using physics side link shared channels
Unit.
In certain embodiments, methods described also includes：So that for requiring the of higher delay
The dispatching distribution resource pool of two message and corresponding data resource pond periodically repeat in time domain.
In certain embodiments, methods described also includes：So that the first message and described
Two message share identical data resource pond, to adapt to dynamic flow.
In certain embodiments, methods described also includes：To be used to require described in higher delay
The dispatching distribution resource pool of the second message is divided into some in time domain, further to reduce
Require the transmission delay of the first message compared with low latency.
In certain embodiments, methods described also includes：It is multiple for the configuration of same data cell
The link shared channels transmission of physics side.
In certain embodiments, methods described also includes：For the first message, it is ensured that institute
The time interval between the link shared channels transmission of multiple physical side is stated less than threshold value, to reduce
State the transmission delay of first message.
In certain embodiments, methods described also includes：Using the physics with the first message
Side link shared channels transmit the used non-overlapping subframe of subframe, carry out described second and disappear
The physics side link shared channels transmission of breath.
In certain embodiments, methods described also includes：In the physics side chain of the first message
Road shared channel is transmitted at used subframe, and the physics side chain road for forbidding second message is total to
Enjoy transmission.
In certain embodiments, the message distribution individually scheduling for requiring with different delays
Distribution resource pool includes：For the first message, multiple tune of the distribution with short duration
Degree distribution resource pool and equal number of corresponding data resource pond, wherein each data resource
Pond follows dispatching distribution resource pool corresponding with the data resource pond in time domain.
In certain embodiments, the first message is pre-impact alert message, and it is described compared with
Low latency is 20 millisecond delays.
In certain embodiments, second message is periodic message, and described compared with Gao Yan
It is late 100 millisecond delays.
According to the second aspect of the disclosure, there is provided one kind is used to be dropped in vehicle-to-vehicle communication
The equipment of low latency, including：Distributor, is configured to for different delays requirement
Message distributes single dispatching distribution resource pool；And frequency division multiplexing device, be configured to by with
Enter in the dispatching distribution resource pool for requiring the first message compared with low latency and corresponding data resource pond
Row frequency division multiplexing, to reduce the transmission delay of the first message.
In certain embodiments, dispatching distribution resource pool is used to utilize thing in the dispatching distribution cycle
Manage side link control channel to transmit the control information of message, and data resource pond is used in institute
State the data sheet for transmitting the message in the dispatching distribution cycle using physics side link shared channels
Unit.
In certain embodiments, the equipment also includes：First TDMD time division multiplex device, is configured
To cause dispatching distribution resource pool and corresponding data for requiring the second message of higher delay
Resource pool is periodically repeated in time domain.
In certain embodiments, the equipment also includes：Second TDMD time division multiplex device, is configured
To cause the first message and the shared identical data resource pond of second message, to adapt to
Dynamic flow.
In certain embodiments, the equipment also includes：Device is divided, is configured to be used for
The dispatching distribution resource pool of second message of requirement higher delay is divided into multiple in time domain
Part, with further lower the requirement compared with low latency the first message transmission delay.
In certain embodiments, the equipment also includes：Configuration device, is configured to for same
The link shared channels transmission of one data cell configuration multiple physical side.
In certain embodiments, the equipment also includes：First mode selecting device, is configured
It is for the first message, it is ensured that between the transmission of multiple physical side link shared channels
Time interval is less than threshold value, to reduce the transmission delay of the first message.
In certain embodiments, the equipment also includes：Second mode selecting device, is configured
It is to transmit used subframe not phase using the physics side link shared channels with the first message
The subframe of overlap, carries out the physics side link shared channels transmission of second message.
In certain embodiments, the equipment also includes：Inhibiting apparatus, are configured to described
The physics side link shared channels of first message are transmitted at used subframe, forbid described second
The physics side link shared channels transmission of message.
In certain embodiments, the distributor is configured to：For the first message,
Multiple dispatching distribution resource pools of the distribution with short duration and equal number of corresponding number
According to resource pool, wherein each data resource pond follows corresponding with the data resource pond in time domain
Dispatching distribution resource pool.
In certain embodiments, the first message is pre-impact alert message, and it is described compared with
Low latency is 20 millisecond delays.
In certain embodiments, second message is periodic message, and described compared with Gao Yan
It is late 100 millisecond delays.
The method for reducing postponing in vehicle-to-vehicle communication in accordance with an embodiment of the present disclosure
And equipment, the transmission delay of emergency message can be effectively reduced, so as to meet for vehicle safety
The delay of message communicating is required.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding of the disclosure, constitutes the disclosure
A part, the schematic description and description of the disclosure is used to explain the disclosure, does not constitute
Improper restriction of this disclosure.In the accompanying drawings:
Fig. 1 is illustrated in the frame structure for being used for D2D communications specified in LTE versions 12；
Fig. 2 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Frame structure；
Fig. 3 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
The schematic diagram of time-domain transmission model selection；
Fig. 4 illustrate in accordance with an embodiment of the present disclosure for further reducing in communicating in V2V
The frame structure of the delay of emergency message；
Fig. 5 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Alternative frame structure；
Fig. 6 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
The schematic diagram of time-domain transmission model selection；
Fig. 7 illustrates the transmission reliability for improving emergency message in accordance with an embodiment of the present disclosure
The schematic diagram of the time-domain transmission model selection of property；
Fig. 8 illustrates the transmission reliability for improving emergency message in accordance with an embodiment of the present disclosure
The schematic diagram of the quiescing of property；
Fig. 9 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
The flow chart of method 900；And
Figure 10 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Equipment 1000 flow chart.
In various figures, identical or corresponding label represents identical or corresponding part.
Specific embodiment
Hereinafter, each exemplary embodiment of the disclosure will be described in detail with reference to the attached drawings.Should
Work as attention, these accompanying drawings and description be related to be merely possible to exemplary embodiment.Should refer to
Go out, according to subsequently description, it is easy to dream up the replacement of structures and methods disclosed herein
Embodiment, and these can be used in the case of the principle claimed without departing from the disclosure
Alternate embodiment.
It should be appreciated that providing these exemplary embodiments just for the sake of making those skilled in the art
Better understood when further to realize the disclosure, and not limit the model of the disclosure by any way
Enclose.
Term " including " as used herein, "comprising" and similar terms are understood to open
The term of property, i.e., " including/including but not limited to ".Term "based" is " being based at least partially on ".
Term " one embodiment " expression " at least one embodiment "；Expression is " extremely for term " another embodiment "
A few further embodiment ".The related definition of other terms is given in will be described below.
Hereinafter, by be described in detail with reference to the accompanying drawings in accordance with an embodiment of the present disclosure for
The technical scheme for postponing is reduced in vehicle-to-vehicle communication.
Fig. 1 is illustrated in the frame structure for being used for D2D communications specified in LTE R12.
For ease of understanding, the typical scene in D2D communication networks is described first here.At one
In typical scene, multiple D2D user equipmenies (UE) are each with rule in 3GPP LTE R12
Fixed broadcast mode transmissions data.Specifically, the network node for such as base station etc is it
Pre-assigned frequency spectrum resource, these frequency spectrum resources are in a dispatching distribution (SA) in the cycle
SA control times part and data period part are divided in time domain, wherein when SA is controlled
Section utilizes its corresponding physics side link control channel (PSCCH) to transmit for counting on part
According to the schedule information of transmission, including the transmission mode of resource allocation information, packet etc.；And
Transmitted using its corresponding physics side link shared channels (PSSCH) on data period part
Data/data bag.SA control information was first transmitted before the data transfer of D2D broadcast, with reality
Existing discontinuous reception (DRX).UE will be decoded first to SA control information, then be determined
It is fixed whether packet to be decoded and how to be decoded based on SA control information.
As specified in LTE versions 12, PSCCH channels and PSSCH channels are based on physics
The periodicity of resource pool.As shown in figure 1, the SA resource pools and data resource pool cycle in time domain
Property ground repeat.The cycle of resource pool is configurable, for example, except being configured to such as figure
Beyond 40 milliseconds (that is, 40 subframes, each subframe be 1 millisecond) shown in 1, can be with
It is configured to 80,160 or 320 milliseconds (ms).SA resource pools and data resource pool are distinguished
Different subframes are occupied, and data resource pond follows SA resource pools in time domain.In Fig. 1
In, it is that SA resource pools are assigned with 8 to balance the performance between PSCCH and PSSCH
Individual subframe, and be that data resource pond is assigned with 32 subframes.
It can be clearly seen that transmitting message with the frame structure shown in Fig. 1 from Fig. 1, most
Little delay will be 40ms (i.e. one SA cycle), and maximum delay will be 80ms (i.e. two
The SA cycles), therefore such frame structure disclosure satisfy that the 100ms required by periodic message prolongs
Late, but cannot but meet the 20ms required by the emergency message by taking pre-impact message as an example to postpone.
Fig. 2 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Frame structure.In fig. 2, it is assigned with list first against the V2V message required with different delays
Only SA resource pools.For example, as shown in Fig. 2 the week for postponing to require with 100ms
Phase property message, is assigned with SA resource pools 1 () and data resource pool in figure referred to as " SA 1 "
1 () in figure referred to as " data 1 ".It is identical with the frame structure shown in Fig. 1, SA resource pools 1
Different subframes are occupied respectively with data resource pool 1 and data resource pond 1 follows in time domain
SA resource pools 1.Meanwhile, for the emergency message for postponing to require with 20ms, it is assigned with SA
Resource pool 2 () and data resource pool 2 () in figure referred to as " SA 2 " in figure referred to as " data 2 ",
And SA resource pools 2 and data resource pool 2 are carried out into frequency division multiplexing, i.e., both are in time domain
Overlap and do not overlap on frequency domain.Frequency division multiplexing between SA resource pools 2 and data resource pool 2
The frequency of occurrences of SA resources in time domain is increased, so as to the transmission for reducing SA control information is prolonged
Late.Data resource pond 2 is overlap with data resource pond 1, efficiently to adapt to dynamic flow.
From from the perspective of UE, the PSSCH transmission in data resource pond 2 follows SA resources
PSCCH transmission in pond 2.After the UE with emergency message completes PSCCH transmission,
The UE using after available subframe come for PSSCH transmission.Fig. 3 is illustrated according to this public affairs
The embodiment opened is shown for reducing the time-domain transmission model selection for postponing in communicating in V2V
It is intended to.Fig. 3 is described below in conjunction with Fig. 2.
In order to improve system-level performance, for a data cell (that is, medium education association
View data cell (MAC PDU)), the transmission of multiple PS SCH can be configured.In this, it is assumed that
K PSSCH transmission (for example, in figure 3, k etc. is configured with for a MAC PDU
In 2), tiRepresent the subframe index for i ＆ lt transmission.In order to reduce the transmission of emergency message
Postpone, the time interval for being transferred to the transmission of last time PSSCH from first time PSSCH should
Be it is limited, i.e., | tk-t1|<tthr, wherein tthrRepresent the threshold value of time interval.
Consider that emergency message and periodic message share identical data resource pond, such as below equation
(1) shown in, the time interval of PSSCH transmission can be based on by whole time-domain transmission set of patterns
Close P to be divided to for two subsets PurgAnd Pper：
Formula (1)
Be assumed to be data resource pond be assigned with N number of subframe (for example, in figure 3, N be equal to 32),
Then the total number of available time-domain transmission pattern isSubset PurgIn time-domain transmission pattern can
To be retained for the transmission of emergency message, so that it is guaranteed that for the first time of emergency message
PSSCH is transferred to the time interval of last time PSSCH transmission and is less than threshold value tthr, and then drop
The transmission delay of low emergency message.
Fig. 2 is returned to, because SA resource pools 1 and data resource pool 2 are division multiplexed and occupy
Different subframes, therefore the subframe for the distribution of SA resource pools 1 can not be used for emergency message
PSSCH is transmitted, so as to introduce the transmission delay of emergency message.In order to solve this problem,
SA resource pools 1 can be divided into some.For example, Fig. 4 is illustrated according to the disclosure
Embodiment the delay for further reducing emergency message in communicating in V2V frame structure.
As shown in figure 4, SA resource pools 1 are divided into two parts being distributed in time domain, i.e. Fig. 4
Shown in (SA1) part 1 and (SA1) part 2, two parts each occupy 4 sons
Frame.Such frame structure can reduce the transmission delay of emergency message, but can slightly increase
The delay of periodic message.For example, in the diagram, although 80ms of the maximum delay from Fig. 1
100ms is increased, but the 100ms for remaining able to meet required by periodic message postpones.
Fig. 5 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Alternative frame structure.In Figure 5, for the emergency message for postponing to require with 20ms, order point
Match somebody with somebody the multiple SA with short duration (for example, 8 subframes shown in Fig. 5) to provide
SA resource pools 2 in source pond, such as Fig. 5 arrive SA resource pools 5.For periodic message,
Data resource pond 1 is assigned with, it includes all data resource ponds for emergency message, for example
Data resource pond 5 is arrived in data resource pond 2.Therefore, periodic message and the shared phase of emergency message
With data resource pond efficiently adapting to dynamic flow.
In order to improve system-level performance, can be multiple for a data MAC PDU configuration
PSSCH is transmitted.For example, Fig. 6 illustrate in accordance with an embodiment of the present disclosure in V2V
The schematic diagram of the time-domain transmission model selection of delay is reduced in communication.Describe below in conjunction with Fig. 5
Fig. 6.
Consider that emergency message and periodic message share identical data resource pond, such as below equation
(2) shown in, whole time-domain transmission set of modes P can be divided to for two subsets PiAnd P1：
Formula (2)
Herein it is assumed that being assigned with N number of subframe (for example, Fig. 6 for data resource pond in the SA cycles
Middle N is for 32).Pi(i=2 ... 5) is all included for the multiple PS SCH transmission of MAC PDU
Time-domain transmission mode subset in the i of data resource pond, wherein data resource pond i occupy 8
Individual subframe.P1Multiple PS SCH transmission for MAC PDU is all contained within data resource pond
Time-domain transmission mode subset in 1 (it includes that data resource pond 5 is arrived in data resource pond 2), its
Middle data resource pond 1 occupies 32 subframes.P1In PSSCH transmission at least cross over PiIn
Two data resource pools.PiIn time-domain transmission pattern can be retained for emergency message
Transmission, so as to reduce the transmission delay of emergency message.
Additionally, the transmission reliability in order to further improve emergency message, with periodic message
UE can select following time-domain transmission pattern：1) use and the PSSCH by emergency message
The used nonoverlapping subframe of subframe of transmission is transmitted come the PSSCH for carrying out periodic message；Or
Person 2) forbid (mute) cycle in the used subframe of the PSSCH transmission by emergency message
Property message PSSCH transmission.This can reduce collision or the PSSCH to emergency message is passed
Defeated band internal leakage interference.
Fig. 7 illustrates the transmission reliability for improving emergency message in accordance with an embodiment of the present disclosure
The schematic diagram of the time-domain transmission model selection of property.As shown in fig. 7, with periodic message
UE had decoded SA for emergency message before its own SA is transmitted, then the UE can be with
Select to transmit the used nonoverlapping subframe of subframe to carry out with the PSSCH by emergency message
The PSSCH transmission of periodic message.
Fig. 8 illustrates the transmission reliability for improving emergency message in accordance with an embodiment of the present disclosure
The schematic diagram of the quiescing of property.As shown in figure 8, decoding in the UE with periodic message
After for the SA of emergency message, the UE can be transmitted in the PSSCH by emergency message
Forbid the data transfer of periodic message at the subframe for being used.In accordance with an embodiment of the present disclosure,
Can perform the quiescing with taboo probability α, wherein taboo probability α depend on it is various because
Element, UE density, the size in data resource pond etc..For example, UE density is bigger, then prohibit
Only probability is bigger.So, the PSSCH transmission of emergency message can be better protected.
Fig. 9 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
The flow chart of method 900.As shown in figure 9, method 900 includes step S901 to S902.
Now by with reference to Fig. 2-8 describing each step of method 900 in detail.
In step S901, for the message with different delays demand single dispatching distribution is distributed
Resource pool.For example, as shown in Fig. 2 for 100ms postpone require periodic message,
Distribution SA resource pools 1 and data resource pool 1；And for postponing the tight of requirement with 20ms
Anxious message, distribution SA resource pools 2 and data resource pool 2.Next, method 900 carry out to
Step S902, will be used to require the dispatching distribution resource pool and correspondence of the first message compared with low latency
Data resource pond frequency division multiplexing, to reduce the transmission delay of the first message.For example, such as
Shown in Fig. 2, SA resource pools 2 and data resource pool 2 are carried out into frequency division multiplexing, i.e., both
In time domain overlap and do not overlap on frequency domain, so as to increased time domain in SA resources appearance frequency
Rate, so as to reduce the transmission delay of SA control information.
In accordance with an embodiment of the present disclosure, method 900 can also include causing for requiring compared with Gao Yan
The dispatching distribution resource pool of the second slow message and corresponding data resource pond periodicity in time domain
Repeat on ground.For example, as shown in Fig. 2 SA resource pools 1 and data resource pool 1 are occupied respectively
Different subframe and data resource pond 1 follows SA resource pools 1 in time domain.
In accordance with an embodiment of the present disclosure, method 900 can also include cause the first message and
Second message shares identical data resource pond, to adapt to dynamic flow.For example, such as
Shown in Fig. 2, data resource pond 2 is overlap with data resource pond 1, dynamic efficiently to adapt to
Flow.
In accordance with an embodiment of the present disclosure, method 900 can also be included for requiring higher delay
The dispatching distribution resource pool of second message some is divided in time domain, to enter one
Step lower the requirement compared with low latency the first message transmission delay.For example, as shown in figure 4,
SA resource pools 1 are divided into two parts being distributed in time domain, i.e., (SA1) shown in Fig. 4
Part 1 and (SA1) part 2, two parts each occupy 4 subframes.Such frame structure
The transmission delay of emergency message can be reduced.
In accordance with an embodiment of the present disclosure, method 900 can also include matching somebody with somebody for same data cell
Put the link shared channels transmission of multiple physical side.For example, as shown in Fig. 3 and Fig. 6-8, pin
To a data MAC PDU configuration such as PSSCH transmission twice.
In accordance with an embodiment of the present disclosure, method 900 can also include being directed to the first message,
Guarantee that the time interval between the link shared channels transmission of the multiple physical side is less than threshold value, with
Reduce the transmission delay of the first message.For example, as shown in figure 3, meeting multiple physical side
Time interval between link shared channels transmission can be protected less than the time-domain transmission pattern of threshold value
The transmission for emergency message is stayed, so that it is guaranteed that the first time PSSCH for emergency message is passed
The defeated time interval to the transmission of last time PSSCH is less than threshold value, and then reduces emergency message
Transmission delay.
In accordance with an embodiment of the present disclosure, method 900 can also include using and the first message
Physics side link shared channels transmit the used non-overlapping subframe of subframe, carry out described
The physics side link shared channels transmission of the second message.For example, as shown in fig. 7, with week
The UE of phase property message had decoded the SA for emergency message before its own SA is transmitted, then
The UE can select to transmit the used nonoverlapping son of subframe with the PSSCH by emergency message
Frame is transmitted come the PSSCH for carrying out periodic message.
In accordance with an embodiment of the present disclosure, method 900 is additionally may included in the thing of the first message
Reason side link shared channels are transmitted at used subframe, forbid the physics side of second message
Link shared channels are transmitted.For example, as shown in figure 8, solving in the UE with periodic message
After code is for the SA of emergency message, the UE can be passed in the PSSCH by emergency message
Forbid its data transfer at defeated used subframe.
In accordance with an embodiment of the present disclosure, step S901 can also include：For the first message,
Multiple dispatching distribution resource pools of the distribution with short duration and equal number of corresponding number
According to resource pool, wherein each data resource pond follows corresponding with the data resource pond in time domain
Dispatching distribution resource pool.For example, as shown in figure 5, for postponing the tight of requirement with 20ms
Anxious message, multiple SA resource pools of the order-assigned with short duration, such as in Fig. 5
SA resource pools 2 arrive SA resource pools 5.For periodic message, data resource pond is assigned with
1, it includes all data resource ponds for emergency message, and data are arrived in such as data resource pond 2
Resource pool 5.Therefore, periodic message and the shared identical data resource pond of emergency message are with height
Effect ground adapts to dynamic flow.
For clarity, some optional steps of method 900 are not shown in fig .9.So
And, it will be appreciated that method 900 can include having above with reference to this described by Fig. 2-8
The step of bright each feature.
So far, method 900 terminates.
Figure 10 illustrate in accordance with an embodiment of the present disclosure in communicating in V2V reduce postpone
Equipment 1000 flow chart.As shown in Figure 10, equipment 1000 includes distributor 1001,
It is configured to the message for requiring with different delays and distributes single dispatching distribution resource pool；
And frequency division multiplexing device 1002, it is configured to for requiring the first message compared with low latency
Dispatching distribution resource pool and corresponding data resource pond carry out frequency division multiplexing, to reduce described first
The transmission delay of message.
In accordance with an embodiment of the present disclosure, dispatching distribution resource pool is used for the profit in the dispatching distribution cycle
The control information of message is transmitted with physics side link control channel, and data resource pond is used for
The number of the message is transmitted using physics side link shared channels in the dispatching distribution cycle
According to unit.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include the first TDMD time division multiplex device,
It is configured such that the dispatching distribution resource pool and correspondence for requiring the second message of higher delay
Data resource pond periodically repeat in time domain.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include the second TDMD time division multiplex device,
The first message and the shared identical data resource pond of second message are configured such that,
To adapt to dynamic flow.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include dividing device, be configured to
To divide in time domain for the dispatching distribution resource pool for requiring second message of higher delay
For some, with further lower the requirement compared with low latency the first message transmission delay.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include configuration device, be configured to
For the link shared channels transmission of same data cell configuration multiple physical side.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include first mode selecting device,
It is configured to for the first message, it is ensured that multiple physical side link shared channels are transmitted
Between time interval be less than threshold value, to reduce the transmission delay of the first message.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include second mode selecting device,
It is configured with transmitting used son with the physics side link shared channels of the first message
The non-overlapping subframe of frame, carries out the physics side link shared channels transmission of second message.
In accordance with an embodiment of the present disclosure, equipment 1000 can also include inhibiting apparatus, be configured to
Transmit at used subframe in the physics side link shared channels of the first message, forbid institute
State the physics side link shared channels transmission of the second message.
In accordance with an embodiment of the present disclosure, the distributor is configured to for the first message,
Multiple dispatching distribution resource pools of the distribution with short duration and equal number of corresponding number
According to resource pool, wherein each data resource pond follows corresponding with the data resource pond in time domain
Dispatching distribution resource pool.
In accordance with an embodiment of the present disclosure, the first message is pre-impact alert message, and institute
It is 20 millisecond delays to state compared with low latency.
In accordance with an embodiment of the present disclosure, second message is periodic message, and it is described compared with
High latency is 100 millisecond delays.
In sum, in accordance with an embodiment of the present disclosure, there is provided one kind is used in vehicle to vehicle
The method and apparatus for reducing postponing in communication.Compared with prior art, embodiment of the disclosure energy
Enough transmission delays for effectively reducing emergency message, so as to meet for vehicle safety message communicating
Postpone to require.
In general, the various example embodiments of the present invention can be in hardware or special circuit, soft
Implement in part, logic, or its any combinations.Some aspects can be implemented within hardware, and its
His aspect can by the firmware of controller, microprocessor or other computing devices or
Implement in software.When each side of embodiments of the invention is illustrated or described as block diagram, flow process
Figure or when being represented using some other figures, it will be understood that square frame described herein, device, system,
Techniques or methods can be as nonrestrictive example in hardware, software, firmware, special circuit
Or implement in logic, common hardware or controller or other computing devices, or its some combination.
And, each frame in flow chart can be counted as method and step, and/or computer program
The operation that the operation of code is generated, and/or the logic of the multiple couplings for being interpreted as performing correlation function
Component.For example, embodiments of the invention include computer program, the computer journey
Sequence product includes visibly realizing computer program on a machine-readable medium, the computer journey
Sequence includes the program code for being configured to realize that method is described above.
In disclosed context, machine readable media can be include or store for or it is relevant
In any tangible medium of the program of instruction execution system, device or equipment.Machine readable media
Can be machine-readable signal medium or machinable medium.Machine readable media can be wrapped
Include but be not limited to electronics, magnetic, optical, electromagnetism, infrared or semiconductor system,
Device or equipment, or its any appropriate combination.The more detailed example of machinable medium
Including with the electrical connection of one or more wire, portable computer diskette, hard disk, with
Machine memory access device (RAM), read-only storage (ROM), erasable programmable is read-only deposits
Reservoir (EPROM or flash memory), light storage device, magnetic storage apparatus, or its is any appropriate
Combination.
For realizing that the computer program code of the method for the present invention can be with one or more programming
Language is write.These computer program codes can be supplied to all-purpose computer, special-purpose computer
Or the processor of other programmable data processing meanss so that program code by computer or
When other programmable data processing meanss are performed, cause and advised in flow chart and/or block diagram
Fixed function/operation is carried out.Program code can completely on computers, partly in computer
It is upper, on computers and partly on the remote computer or complete as independent software kit, part
It is complete to perform on remote computer or server.
In addition, although operation is depicted with particular order, this simultaneously should not be construed and require this
Generic operation is completed with the particular order that illustrates or with sequential order, or performs the behaviour of all diagrams
Make to obtain expected result.In some cases, multitask or parallel processing can be beneficial.
Similarly, although discussed above contain some specific implementation details, this should not explained
To limit the scope of any invention or claim, and should be interpreted that to specific invention can be directed to
Specific embodiment description.In this specification described in the context of separate embodiment
Some features can also combined implementation in single embodiment.On the contrary, in single embodiment
Various features described in context can also discretely in multiple embodiments or arbitrarily suitable
Implement in sub-portfolio.
Various modifications, change for the example embodiment of the aforementioned present invention will looked into together with accompanying drawing
Obvious are become to those skilled in the technology concerned when seeing described above.Any and all modification
Unrestriced and of the invention example embodiment scope will be still fallen within.Additionally, aforementioned specification and
There is the benefit for inspiring in accompanying drawing, be related to the technology people of the technical field of embodiments of the invention
Member is it will be appreciated that the other embodiment of the invention for illustrating herein.
It will be understood that, the bright embodiment of this law is not limited to disclosed specific embodiment, and changes
All should be contained in scope of the appended claims with other embodiment.Although being used here spy
Fixed term, but they are only used in the sense that general and description, and be not limited to
Purpose.
Claims (24)
1. it is a kind of for reduce in vehicle-to-vehicle communication postpone method, including：
Message for requiring with different delays distributes single dispatching distribution resource pool；And
To be used to require the dispatching distribution resource pool and corresponding data of the first message compared with low latency
Resource pool carries out frequency division multiplexing, to reduce the transmission delay of the first message.
2. method according to claim 1, wherein dispatching distribution resource pool are used in scheduling
The control information of message, and number are transmitted in assignment period using physics side link control channel
It is used to be transmitted using physics side link shared channels in the dispatching distribution cycle according to resource pool
The data cell of the message.
3. method according to claim 1, also includes：
So that the dispatching distribution resource pool and corresponding number of the second message for requiring higher delay
Periodically repeat in time domain according to resource pool.
4. method according to claim 3, also includes：
So that the first message and the shared identical data resource pond of second message, with suitable
Answer dynamic flow.
5. method according to claim 4, also includes：
Will be used for require higher delay second message dispatching distribution resource pool in time domain
Be divided into some, with further lower the requirement compared with low latency the first message transmission
Postpone.
6. method according to claim 4, also includes：
For the link shared channels transmission of same data cell configuration multiple physical side.
7. method according to claim 6, also includes：
For the first message, it is ensured that between the transmission of multiple physical side link shared channels
Time interval be less than threshold value, to reduce the transmission delay of the first message.
8. method according to claim 6, also includes：
Used subframe is transmitted using the physics side link shared channels with the first message not
Equitant subframe, carries out the physics side link shared channels transmission of second message.
9. method according to claim 6, also includes：
Transmit at used subframe in the physics side link shared channels of the first message, prohibit
The only physics side link shared channels transmission of second message.
10. method according to claim 1, wherein for requiring with different delays
Message is distributed single dispatching distribution resource pool and is included：
For the first message, multiple dispatching distribution resource pools of the distribution with short duration
And equal number of corresponding data resource pond, wherein each data resource pond in time domain with
With dispatching distribution resource pool corresponding with the data resource pond.
11. methods according to claim 1, wherein the first message is pre-impact police
Message is accused, and described is 20 millisecond delays compared with low latency.
12. methods according to claim 3, wherein second message is periodically to disappear
Breath, and the higher delay is 100 millisecond delays.
A kind of 13. equipment for reducing postponing in vehicle-to-vehicle communication, including：
Distributor, is configured to the message distribution for requiring with different delays and individually adjusts
Degree distribution resource pool；And
Frequency division multiplexing device, is configured to be used to require the scheduling of the first message compared with low latency
Distribution resource pool and corresponding data resource pond carry out frequency division multiplexing, to reduce the first message
Transmission delay.
14. equipment according to claim 13, wherein dispatching distribution resource pool are used to adjust
The control information of message is transmitted in degree assignment period using physics side link control channel, and
Data resource pond is used to be passed using physics side link shared channels in the dispatching distribution cycle
The data cell of the defeated message.
15. equipment according to claim 13, also include：
First TDMD time division multiplex device, is configured such that the second message for requiring higher delay
Dispatching distribution resource pool and corresponding data resource pond periodically repeat in time domain.
16. equipment according to claim 15, also include：
Second TDMD time division multiplex device, is configured such that the first message and second message
Shared identical data resource pond, to adapt to dynamic flow.
17. equipment according to claim 16, also include：
Device is divided, is configured to that the scheduling of second message for requiring higher delay will be used for
Distribution resource pool is divided into some in time domain, further to lower the requirement compared with low latency
The transmission delay of the first message.
18. equipment according to claim 16, also include：
Configuration device, is configured to for same data cell configuration multiple physical side link sharing
Transmission.
19. equipment according to claim 18, also include：
First mode selecting device, is configured to for the first message, it is ensured that described multiple
Time interval between the link shared channels transmission of physics side is less than threshold value, to reduce described first
The transmission delay of message.
20. equipment according to claim 18, also include：
Second mode selecting device, is configured with the physics side chain road with the first message
Shared channel transmits the used non-overlapping subframe of subframe, carries out the thing of second message
Reason side link shared channels transmission.
21. equipment according to claim 18, also include：
Inhibiting apparatus, are configured to the physics side link shared channels transmission in the first message
At the subframe for being used, forbid the physics side link shared channels transmission of second message.
22. equipment according to claim 13, wherein the distributor is configured to：
For the first message, multiple dispatching distribution resource pools of the distribution with short duration
And equal number of corresponding data resource pond, wherein each data resource pond in time domain with
With dispatching distribution resource pool corresponding with the data resource pond.
23. equipment according to claim 13, wherein the first message is pre-impact police
Message is accused, and described is 20 millisecond delays compared with low latency.
24. methods according to claim 15, wherein second message is periodically to disappear
Breath, and the higher delay is 100 millisecond delays.
Priority Applications (1)
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| CN201510724445.9A CN106658716A (en) | 2015-10-29 | 2015-10-29 | Method and apparatus for reducing delay in vehicle-to-vehicle communication |
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| CN201510724445.9A CN106658716A (en) | 2015-10-29 | 2015-10-29 | Method and apparatus for reducing delay in vehicle-to-vehicle communication |
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| CN201510724445.9A Pending CN106658716A (en) | 2015-10-29 | 2015-10-29 | Method and apparatus for reducing delay in vehicle-to-vehicle communication |
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