CN110366137A - Data transmission method and device, storage medium, user equipment for V2X - Google Patents
Data transmission method and device, storage medium, user equipment for V2X Download PDFInfo
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- CN110366137A CN110366137A CN201910796577.0A CN201910796577A CN110366137A CN 110366137 A CN110366137 A CN 110366137A CN 201910796577 A CN201910796577 A CN 201910796577A CN 110366137 A CN110366137 A CN 110366137A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
A kind of data transmission method and device, storage medium, user equipment for V2X, data transmission method includes: the transfer resource that detection is used for V2X, and determines subset of resources；When the subset of resources is not enough to be used for transmission V2X data, determine to forward the V2X data by base station.Technical solution of the present invention improves the resource allocation under V2X scene and the efficiency of data transmission.
Description
Technical field
The application be the applying date be on August 12nd, 2016, it is entitled " to be used for application No. is 201610665571.6
The divisional application of the patent application of the resource distribution of V2X and data transmission method and device, base station, terminal ".
The present invention relates to the communications field more particularly to it is a kind of for the data transmission method and device of V2X, storage medium,
User equipment.
Background technique
Currently, introducing direct communication, multiple users in long term evolution (Long Term Evolution, LTE) system
Direct communication can be carried out between terminal (User Equipment, UE).In direct communication, there are two types of resource distribution mode,
One is scheduling resource distribution mode (scheduled resource allocation), which passes through dedicated letter by base station
Enable configuration；One is automatic resource selection mode (autonomous resource selection), and base station can pass through system
Message or wireless heterogeneous networks (Radio Resource Control, RRC) signaling provide the money for direct communication for UE
Source pond, UE select the resource for direct communication from resource pool.UE (Transmitter UE) is transmitted in a direct link
It controls in period (Sidelink Control period, SC period), immediate data can be sent to a target group.?
In one SC period, 4 identical immediate datas can be transmitted by usually transmitting UE.Transmission UE can also be transmitted to multiple target groups
Data.
In the prior art, direct communication, third generation partner program (3rd Generation Partnership are based on
Project, 3GPP) expect to support car networking business: vehicle to extraneous information exchange (Vehicle-to-Everything,
V2X).V2X may include vehicle and facility (Vehicle-to-Infrastructure, V2I) communication, vehicle and network (Vehicle-
To-Network, V2N) communication, vehicle and people (Vehicle-to-Pedestrian, V2P) communication and vehicle and vehicle (Vehicle-to-
Vehicle, V2V) communication.V2X business tool has different needs (Requirements): having the V2X business of predetermined time delay；
Need the V2X business of different transmission frequencies；Need the V2X business of reliable transmission；V2X business with different priorities.Fig. 1
It is the schematic diagram of two different application scenarios of V2X in the prior art with Fig. 2, as shown in Figure 1, in base station network coverage area
Interior, some UE sends V2X message to multiple UE；As shown in Fig. 2, UE first to base station send V2X message, then from base station to
Multiple UE send V2X message.
But the data transmitted compared to existing direct communication, V2X data time is urgent and important, if V2X number
If losing the V2X loss of data that may cause in serious problems, such as automatic Pilot application scenarios according to transmission, it will cause to hand over
Interpreter's event.And the resource distribution mode of direct communication is not well positioned to meet the business demand of V2X in the prior art, leads to data
Efficiency of transmission reduces.
Summary of the invention
Present invention solves the technical problem that being how to improve the efficiency of resource allocation and data transmission under V2X scene.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of resource allocation method for V2X, it to be used for V2X
Resource allocation method include: the resource indication information for receiving user terminal and sending, the resource indication information provides to indicate
Transfer resource in the subset of source is not enough to transmit V2X data for the user terminal；It is described according to the resource indication information
User terminal redistributes the transfer resource or determines to forward the V2X data.
Optionally, it is described according to the resource indication information be the user terminal redistribute transfer resource include: for
The user terminal redistributes the transfer resource for automatic resource selection；Or, use scheduling resource distribution mode for
The user terminal redistributes the transfer resource.
Optionally, it includes: to send notice to the user terminal, described in informing that the decision, which forwards the V2X data,
User terminal base station will forward the V2X data, and the user terminal is established according to the notice and carried, and passes through the carrying
Transmit the V2X data；The V2X data are received, and are sent by way of broadcast.
Optionally, the resource indication information is used to indicate one or more of information: the subset of resources is empty, institute
It states the transfer resource in subset of resources and is not enough to transmit the V2X data of single, the transfer resource in the subset of resources not
The transfer resource for being enough to transmit in Preset Transfer time delay in the V2X data and the subset of resources accounts for all transfer resources
Ratio is lower than pre-determined threshold.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of data transmission method for V2X, data
Transmission method includes: to send resource indication information to base station, and the resource indication information is to indicate the transmission in subset of resources
Inadequate resource transmits V2X data for user terminal, so that the base station is user terminal according to the resource indication information
Redistribute the transfer resource；It is selected according to the transfer resource redistributed, and uses the selected transmission
V2X data described in resource transmission.
In order to solve the above technical problems, the embodiment of the invention also discloses another data transmission method for being used for V2X, number
It include: to send resource indication information to base station according to transmission method, the resource indication information is to indicate the biography in subset of resources
Defeated inadequate resource transmits V2X data for user terminal, so that the base station determines to forward according to the resource indication information
The V2X data；The V2X data are sent to base station, so that the base station forwards the V2X data.
Optionally, the V2X data to the base station that sends includes: the notice for receiving the base station and sending, to determine
The V2X data will be forwarded by stating base station；The carrying for being used for transmission the V2X data is established according to the notice；It is held by described
It carries and transmits the V2X data to the base station.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of device for allocating resources for V2X, resource
Configuration device includes: resource indication information receiving unit, the resource indication information sent suitable for receiving user terminal, the resource
Indicate that transfer resource of the information to indicate in subset of resources is not enough to transmit V2X data for the user terminal；Configuration unit,
Suitable for being that the user terminal redistributes the transfer resource or decision forwards the V2X number according to the resource indication information
According to.
Optionally, the configuration unit includes: first resource distribution subelement, is suitable for the user terminal and redistributes
The transfer resource for automatic resource selection；Secondary resource distribute subelement, suitable for use dispatch resource distribution mode for
The user terminal redistributes the transfer resource.
Optionally, the configuration unit includes: notice transmission sub-unit, is suitable for transmission and notifies to the user terminal, with
Inform that the user terminal base station will forward the V2X data, the user terminal is established according to the notice and carried, and is passed through
The V2X data are transmitted in the carrying；Data forwarding subelement is suitable for receiving the V2X data, and is sent out by way of broadcast
It sees off.
Optionally, the resource indication information is used to indicate one or more of information: the subset of resources is empty, institute
It states the transfer resource in subset of resources and is not enough to transmit the V2X data of single, the transfer resource in the subset of resources not
The transfer resource for being enough to transmit in Preset Transfer time delay in the V2X data and the subset of resources accounts for all transfer resources
Ratio is lower than pre-determined threshold.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of data transmission device for V2X, data
Transmitting device includes: resource indication information transmission unit, is suitable for sending resource indication information to base station, the resource indication information
Transfer resource to indicate in subset of resources is not enough to transmit V2X data for user terminal, so that the base station is according to institute
Stating resource indication information is that user terminal redistributes the transfer resource；Data transmission unit is redistributed suitable for basis
The transfer resource is selected, and uses V2X data described in the selected transmission resources for transmitting.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of data transmission device for V2X, data
Transmitting device includes: resource indication information transmission unit, is suitable for sending resource indication information to base station, the resource indication information
Transfer resource to indicate in subset of resources is not enough to transmit V2X data for user terminal, so that the base station is according to institute
Resource indication information is stated to determine to forward the V2X data；Data transmission unit, suitable for the transmission V2X data to base station, so that
The base station forwards the V2X data.
Optionally, the data transmission unit includes: notice receiving subelement, the notice sent suitable for receiving base station, with
Determine that the base station will forward the V2X data；Subelement is established in carrying, described suitable for being used for transmission according to notice foundation
The carrying of V2X data；Data transmission sub-unit is suitable for transmitting the V2X data to the base station by the carrying.
In order to solve the above technical problems, the base station includes described is used for the embodiment of the invention also discloses a kind of base station
The device for allocating resources of V2X.
In order to solve the above technical problems, the terminal includes described is used for the embodiment of the invention also discloses a kind of terminal
The data transmission device of V2X.
In order to solve the above technical problems, the embodiment of the invention also discloses the data transmission method that another is used for V2X, number
Include: the transfer resource that detection is used for V2X according to transmission method, and determines subset of resources；When the subset of resources is not enough to be used for
When transmitting V2X data, determine to forward the V2X data by base station.
Optionally, it is described by base station forward the V2X data include: by access layer notify Non-Access Stratum initiate business
The carrying for being used for transmission the V2X data is established in request；The V2X data are transmitted to the base station, with logical by the carrying
It crosses the base station and forwards the V2X data.
In order to solve the above technical problems, the embodiment of the invention also discloses the data transmission device that another is used for V2X, number
Include: detection unit according to transmitting device, is adapted to detect for the transfer resource for V2X, and determine subset of resources；Retransmission unit is fitted
In when the subset of resources can not be used for transmission V2X data, decision forwards the V2X data by base station.
Optionally, the retransmission unit includes: that subelement is established in carrying, is suitable for notifying Non-Access Stratum to initiate by access layer
Service request establishes the carrying for being used for transmission the V2X data；Transmission subelement is suitable for transmitting the V2X by the carrying
Data are to the base station, to forward the V2X data by the base station.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that
The resource indication information that the embodiment of the present invention is sent by receiving user terminal, the resource indication information is to refer to
Show that the transfer resource in subset of resources is not enough to transmit V2X data for the user terminal；It is according to the resource indication information
The user terminal redistributes the transfer resource or determines to forward the V2X data.Technical solution of the present invention is at user's end
End be when cannot obtain the transfer resource for being used for transmission V2X data in time, base station according to resource indication information be user terminal again
Allocation of transmission resources ensure that user's end so that the transmission resources for transmitting V2X data redistributed can be used in user terminal
End can obtain transfer resource when needed, improve the efficiency of the resource allocation under V2X application scenarios；Or base station determines forwarding
V2X data improve the efficiency of V2X data transmission to guarantee the transmission of V2X data.
Further, the resource indication information can serve to indicate that one or more of information: the subset of resources is
Transfer resource in empty, the described subset of resources is not enough to transmit the V2X data of single, the transmission money in the subset of resources
The transfer resource that source is not enough to transmit in the V2X data and the subset of resources in Preset Transfer time delay accounts for all transmission moneys
The ratio in source is lower than pre-determined threshold.Above- mentioned information are indicated by resource indication information, to show the transfer resource in subset of resources
Be not enough to for the user terminal transmit V2X data so that base station be user terminal redistribute transfer resource or
Forwarding V2X data are determined, to improve the efficiency of V2X data transmission.
Detailed description of the invention
Fig. 1 and Fig. 2 is the schematic diagram of two different application scenarios of V2X in the prior art；
Fig. 3 is a kind of flow chart of the resource allocation method for V2X of the embodiment of the present invention；
Fig. 4 is a kind of flow chart of the data transmission method for V2X of the embodiment of the present invention；
Fig. 5 is flow chart of the another kind of the embodiment of the present invention for the data transmission method of V2X；
Fig. 6 is a kind of structural schematic diagram of the device for allocating resources for V2X of the embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of the data transmission device for V2X of the embodiment of the present invention；
Fig. 8 is structural schematic diagram of the another kind of the embodiment of the present invention for the data transmission device of V2X.
Specific embodiment
As described in the background art, V2X data are compared to the data that existing direct communication is transmitted, it is pressed for time and again
It wants, if the V2X loss of data that may cause in serious problems, such as automatic Pilot application scenarios is lost in the transmission of V2X data
Words, it will lead to traffic accident.And the resource distribution mode of direct communication is not well positioned to meet the business of V2X in the prior art
Demand causes data transmission efficiency to reduce.
Present inventor analyzes the prior art, in direct communication in the prior art, once base station
It is configured with the resource pool for automatic resource selection for UE, then UE is carried out data transmission using the transfer resource in resource pool, UE
It does not need to detect whether can be used the resource, therefore is not in the problem of UE can not obtain transfer resource.However in V2X industry
In business, when base station is used for the resource pool of automatic resource selection in system message for UE distribution, UE needs to detect object in resource pool
The energy (being also possible to power) on resource block is managed, to detect whether other UE are sending V2X data using transfer resource, and
Selection is not transmitted by other UE transfer resource occupied, to improve the effect of transmission.
Resource pool may include be used for transmission direct link control information (Sidelink Control Information,
SCI resource) and the resource for being used for transmission V2X data.UE, can be with the resource of probe transmission SCI, also when selecting transfer resource
It can be with the power of the occupied Physical Resource Block of resource of probe transmission V2X data.By the resource of probe transmission SCI, UE can
To determine the occupied Physical Resource Block of other UE；Pass through the occupied Physical Resource Block of resource of probe transmission V2X data
Power, UE may determine whether that neighbouring UE uses the Physical Resource Block.UE needs to exclude the occupied transmission of other UE
The Physical Resource Block of SCI, and exclude Physical Resource Block used in other UE transmission V2X data, remaining resource (can be with
Referred to as subset of resources) in, UE can carry out the transmission of V2X data according to the energy sequence selection resource block detected.
That is, UE, in the power of probe transmission resource, if power is more than pre-determined threshold, UE cannot select this
Transfer resource.At this point, UE is likely to occur the problem of cannot obtaining transfer resource for a long time, cause UE that cannot transmit V2X number in time
According to data transmission efficiency reduces.
And direct communication technology in the prior art can not solve the above problems.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 3 is a kind of flow chart of the resource allocation method for V2X of the embodiment of the present invention.
Resource allocation method shown in Fig. 3 for V2X can be used for base station side, and the resource allocation method may include
Following steps:
Step S301: the resource indication information that user terminal is sent is received；
Step S302: being that the user terminal redistributes the transfer resource or decision according to the resource indication information
Forward the V2X data.
Wherein, the resource indication information is not enough to the transfer resource indicated in subset of resources for the user terminal
Transmit V2X data.
Specifically, the subset of resources can be in resource pool in addition to the transfer resource that other users terminal occupies,
For the resource (resource) of active user's terminal transmission V2X data.
In specific implementation, the UE in connected state has V2X business demand, and peritropous other equipment is needed to send V2X
When data, which needs to obtain transfer resource, for sending V2X data.The cell that UE is currently resident, which can be broadcasted, to be used for
The transmission resources for transmitting V2X data in resource pool can be used in the resource pool of UE automatic resource selection, the UE.Or UE is to base station
Indicate that it needs to carry out V2X data transmission, then base station by wireless heterogeneous networks (Radio Resource Control,
RRC) signaling is configured to the resource pool that automatic resource selects to the UE.
In specific implementation, resource indication information can serve to indicate that one or more of information: indicate resource
Collection is not enough to transmit the V2X data of single, instruction resource for transfer resource empty, in the instruction subset of resources
Transfer resource in collection is not enough to transmit the V2X data in Preset Transfer time delay and indicates the transmission in the subset of resources
Resource accounts for the ratio of all transfer resources lower than pre-determined threshold.
Specifically, V2X business has diversity, such as V2X business, the different transmitting pins of different propagation time delays
The V2X business that the V2X business of rate, different transmission reliabilities require；So, also there is corresponding requirement for transfer resource.
Still further, when subset of resources is empty, the resource for user terminal transmission V2X data is sky, user
Terminal can not transmit V2X data.Since transfer resource includes the resource for being used for transmission SCI and the resource for being used for transmission V2X data,
It is empty that any subset of resources, which is empty i.e. expression subset of resources, so in the corresponding subset of resources of two kinds of resources.In subset of resources
When transfer resource is not enough to transmit the V2X data of single, user terminal can not transmit V2X data, or V2X data is caused to be transmitted
It is imperfect, influence data transmission efficiency.For example, the V2X size of data of user terminal single is 300 bits (bit), 3 are needed
Physical Resource Block (Physical Resource Block), and the transfer resource in subset of resources only has 2 Physical Resource Block,
So user terminal can not transmit V2X data, or cause the transmission of V2X data imperfect.Transfer resource in subset of resources
When being not enough to transmit V2X data in Preset Transfer time delay, user terminal can not transmit V2X data, or V2X data is caused to pass
It is defeated imperfect, influence data transmission efficiency.For example, the V2X data of user terminal have the demand (user terminal of 50ms propagation delay time
High level can know the corresponding propagation delay time of V2X data), and the transfer resource in subset of resources can only provide the biography of 100ms
Defeated time delay influences data transmission effect then user terminal can not transmit V2X data, or cause the transmission of V2X data imperfect
Rate.When transfer resource in subset of resources accounts for the ratio of all transfer resources lower than pre-determined threshold, indicate big in resource pool
Fractional transmission resource is occupied or is used by other users terminal, if user terminal uses the transmission resources for transmitting in subset of resources
V2X data, then the speed of data transmission can be reduced.Wherein it is possible to according to the resource for being used for transmission SCI and be used for transmission V2X
Pre-determined threshold is respectively set in the resource of data, can also use identical pre-determined threshold.
It is understood that Preset Transfer time delay can be determined according to actual application environment by the high level of user terminal；
Pre-determined threshold can be configured by base station or voluntarily be configured by user terminal according to actual application environment, the embodiment of the present invention pair
This is with no restrictions.
Specifically, base station can determine user terminal after the resource indication information for receiving user terminal transmission
Data transmission efficiency reduces, therefore in step S202, base station is that user terminal redistributes transmission money according to resource indication information
Source determines forwarding V2X data.Wherein, forwarding V2X data refer to that V2X data are sent to target user's end by base station
End.
Specifically, base station can redistribute the transfer resource for automatic resource selection for the user terminal；
Base station can also use scheduling resource distribution mode to redistribute the transfer resource for the user terminal.Base station can also determine
Surely V2X data are forwarded.
In specific implementation, base station is user terminal when redistributing transfer resource, and user terminal can be according to redistributing
Resource selected, and use selected transmission resources for transmitting V2X data.
In specific implementation, when base station determines forwarding V2X data, base station sends notice to the user terminal, to inform
The user terminal base station will forward the V2X data, and the user terminal initiates to establish the business of carrying according to the notice
Request, and the V2X data are transmitted in the carrying by establishing；The V2X data are received, and are sent by way of broadcast
It goes out.
Specifically, after user terminal receives the notice of base station, the access layer of user terminal (Access Stratum,
AS) notice Non-Access Stratum (Non-Access Stratum, NAS) establishes carrying, and Non-Access Stratum initiating business request, foundation is used for
Transmit the carrying of V2X data.User terminal transmits V2X data to base station by the carrying, and base station is receiving user terminal hair
It, can be directly by eating dishes without rice or wine to go out data forwarding after the V2X data sent.For example, passing through MBMS service
(Multimedia Broadcast Multicast Service, MBMS) or single cell point are to multiple spot (Single Cell
Point to Multipoint, SC-PTM) forward V2X data.
The embodiment of the present invention is when user terminal cannot obtain the transfer resource for being used for transmission V2X data in time, base station root
It is that user terminal redistributes transfer resource according to resource indication information, so that the transmission redistributed can be used in user terminal
Resource transmission V2X data ensure that user terminal can obtain transfer resource when needed, improve under V2X application scenarios
The efficiency of resource allocation；Or base station determines forwarding V2X data, to guarantee the transmission of V2X data, improves the transmission of V2X data
Efficiency.
Fig. 4 is a kind of flow chart of the data transmission method for V2X of the embodiment of the present invention.
Data transmission method shown in Fig. 4 for V2X can be used for subscriber terminal side, and the data transmission method can be with
The following steps are included:
Step S401: resource indication information is sent to base station；
Step S402: being selected according to the transfer resource redistributed, and uses the selected transfer resource
Transmit the V2X data.
Wherein, the resource indication information is not enough to the transfer resource indicated in subset of resources for the user terminal
V2X data are transmitted, so that the base station is that user terminal redistributes the transfer resource according to the resource indication information.
In specific implementation, user terminal can send in the situation resource indication information: the subset of resources be it is empty,
Transfer resource in the subset of resources is not enough to transmit the V2X data of single, the transfer resource in the subset of resources
The transfer resource for being not enough to transmit in Preset Transfer time delay in the V2X data and the subset of resources accounts for all transfer resources
Ratio be lower than pre-determined threshold.Specifically, since transfer resource includes being used for transmission the resource of SCI and being used for transmission V2X data
Resource, then any subset of resources is empty to indicate that subset of resources is sky in the corresponding subset of resources of two kinds of resources.
Specifically, user terminal can not when the transfer resource in subset of resources is not enough to transmit the V2X data of single
V2X data are transmitted, or cause the transmission of V2X data imperfect, influence data transmission efficiency.For example, the V2X of user terminal single
Size of data is 300 bits (bit), is needed 3 Physical Resource Block (Physical Resource Block), and subset of resources
Interior transfer resource only has 2 Physical Resource Block, then user terminal can not transmit V2X data, or V2X data is caused to be transmitted
It is imperfect.When transfer resource in subset of resources is not enough to transmit V2X data in Preset Transfer time delay, user terminal can not
V2X data are transmitted, or cause the transmission of V2X data imperfect, influence data transmission efficiency.For example, the V2X data of user terminal
There is the demand of 50ms propagation delay time, and the transfer resource in subset of resources can only provide the propagation delay time of 100ms, then user is whole
End can not transmit V2X data, or cause the transmission of V2X data imperfect, influence data transmission efficiency.Biography in subset of resources
When defeated resource accounts for the ratio of all transfer resources lower than pre-determined threshold, indicate that most of transfer resource in resource pool is used by other
Family terminal is occupied or is used, if user terminal can reduce number using the transmission resources for transmitting V2X data in subset of resources
According to the speed of transmission.Wherein it is possible to be respectively set according to the resource for being used for transmission SCI and the resource for being used for transmission V2X data pre-
Gating limit, can also use identical pre-determined threshold.
In the present embodiment, base station receives resource indication information, and redistributes transfer resource for user terminal, and user is whole
End can be selected according to the transfer resource redistributed, and use selected transmission resources for transmitting V2X data.
Fig. 5 is flow chart of the another kind of the embodiment of the present invention for the data transmission method of V2X.
Data transmission method shown in fig. 5 for V2X can be used for subscriber terminal side, and the data transmission method can be with
The following steps are included:
Step S501: resource indication information is sent to base station；
Step S502: the V2X data are sent to base station, so that the base station forwards the V2X data.
Wherein, the resource indication information is not enough to the transfer resource indicated in subset of resources for the user terminal
V2X data are transmitted, so that the base station determines to forward the V2X data according to the resource indication information.
In specific implementation, user terminal can send resource indication information in any one following situation: the resource
Subset is sky, the transfer resource in the subset of resources is not enough to transmit the V2X data of single, in the subset of resources
The transfer resource that transfer resource is not enough to transmit in the V2X data and the subset of resources in Preset Transfer time delay accounts for all
The ratio of transfer resource is lower than pre-determined threshold.
Specifically, user terminal can not when the transfer resource in subset of resources is not enough to transmit the V2X data of single
V2X data are transmitted, or cause the transmission of V2X data imperfect, influence data transmission efficiency.For example, the V2X of user terminal single
Size of data is 300 bits (bit), is needed 3 Physical Resource Block (Physical Resource Block), and subset of resources
Interior transfer resource only has 2 Physical Resource Block, then user terminal can not transmit V2X data, or V2X data is caused to be transmitted
It is imperfect.When transfer resource in subset of resources is not enough to transmit V2X data in Preset Transfer time delay, user terminal can not
V2X data are transmitted, or cause the transmission of V2X data imperfect, influence data transmission efficiency.For example, the V2X data of user terminal
There is the demand of 50ms propagation delay time, and the transfer resource in subset of resources can only provide the propagation delay time of 100ms, then user is whole
End can not transmit V2X data, or cause the transmission of V2X data imperfect, influence data transmission efficiency.Biography in subset of resources
When defeated resource accounts for the ratio of all transfer resources lower than pre-determined threshold, indicate that most of transfer resource in resource pool is used by other
Family terminal is occupied or is used, if user terminal can reduce number using the transmission resources for transmitting V2X data in subset of resources
According to the speed of transmission.
In the present embodiment, after base station receives resource indication information, determine to forward the V2X data, and notify that user is whole
End.User terminal receives the notice that base station is sent, and the carrying for being used for transmission the V2X data is established according to notice, passes through carrying
V2X data are transmitted to base station.Specifically, radio bearer can be established by the Uu interface between UE and base station.
Specifically, the access layer notice Non-Access Stratum of user terminal is established after user terminal receives the notice of base station
Carrying, Non-Access Stratum initiating business request establish the carrying for being used for transmission V2X data.User terminal transmits V2X by the carrying
For data to base station, base station, can be directly by eating dishes without rice or wine data forwarding after the V2X data for receiving user terminal transmission
It goes.For example, forwarding data by MBMS or SC-PTM.
Fig. 6 is a kind of structural schematic diagram of the device for allocating resources for V2X of the embodiment of the present invention.
Device for allocating resources 60 shown in fig. 6 for V2X can be used for base station side, the device for allocating resources for V2X
60 may include: resource indication information receiving unit 601 and configuration unit 602.
Wherein, resource indication information receiving unit 601 is suitable for receiving the resource indication information that user terminal is sent, the money
Source indicates that transfer resource of the information to indicate in subset of resources is not enough to transmit V2X data for the user terminal；Configuration is single
Member 602 is suitable for being that the user terminal redistributes transfer resource or determines to forward the V2X according to the resource indication information
Data.
In specific implementation, configuration unit 602 may include first resource distribution subelement (not shown) and Secondary resource point
With subelement (not shown).First resource distribution subelement is suitable for the user terminal and redistributes for automatic resource selection
The transfer resource；Secondary resource distribution subelement is suitable for that scheduling resource distribution mode is used to divide again for the user terminal
With the transfer resource.
In specific implementation, configuration unit 602 may include notice transmission sub-unit (not shown) and data forwarding subelement
(not shown).Transmission sub-unit is notified to be suitable for sending notice to the user terminal, to inform that the user terminal base station will turn
Send out V2X data described, the user terminal initiates to establish the service request of carrying according to the notice, and described by what is established
The V2X data are transmitted in carrying；Data forwarding subelement is suitable for receiving the V2X data, and is sent out by way of broadcast
It goes.
The specific mode of the embodiment of the present invention can refer to the specific of the resource allocation method shown in Fig. 3 for V2X
Embodiment, details are not described herein again.
Fig. 7 is a kind of structural schematic diagram of the data transmission device for V2X of the embodiment of the present invention.
Data transmission device 70 shown in Fig. 7 for V2X can be used for subscriber terminal side, and the data for V2X are transmitted
Device 70 may include: resource indication information transmission unit 701 and data transmission unit 702.
Wherein, resource indication information transmission unit 701 is suitable for sending resource indication information to base station, the resource instruction letter
It ceases the transfer resource to indicate in subset of resources to be not enough to transmit V2X data for the user terminal, so that the base station
It is that user terminal redistributes the transfer resource according to the resource indication information；Data transmission unit 702 is suitable for according to weight
The newly assigned transfer resource is selected, and uses V2X data described in the selected transmission resources for transmitting.
In specific implementation, resource indication information transmission unit 701 can send in the situation resource indication information: institute
Stating subset of resources is that the transfer resource in empty, described subset of resources is not enough to transmit the V2X data of single, resource
Transfer resource in collection is not enough to transmit the transfer resource in the V2X data and the subset of resources in Preset Transfer time delay
The ratio of all transfer resources is accounted for lower than pre-determined threshold.
Specifically, target of the data transmission unit 702 using selected transmission resources for transmitting V2X data to V2X business
Equipment.
The specific mode of the embodiment of the present invention can refer to the specific of the data transmission method shown in Fig. 4 for V2X
Embodiment, details are not described herein again.
Fig. 8 is structural schematic diagram of the another kind of the embodiment of the present invention for the data transmission device of V2X.
Data transmission device 80 shown in Fig. 8 for V2X can be used for subscriber terminal side, and the data for V2X are transmitted
Device 80 may include: resource indication information transmission unit 801 and data transmission unit 802.
Wherein, resource indication information transmission unit 801 is suitable for sending resource indication information to base station, the resource instruction letter
It ceases the transfer resource to indicate in subset of resources to be not enough to transmit V2X data for the user terminal, so that the base station
It is determined to forward the V2X data according to the resource indication information；Data transmission unit 802 is suitable for sending the V2X data extremely
Base station, so that the base station forwards the V2X data.
In specific implementation, resource indication information transmission unit 801 can send in the situation resource indication information: institute
Stating subset of resources is that the transfer resource in empty, described subset of resources is not enough to transmit the V2X data of single, resource
Transfer resource in collection is not enough to transmit the transfer resource in the V2X data and the subset of resources in Preset Transfer time delay
The ratio of all transfer resources is accounted for lower than pre-determined threshold.
Specifically, V2X data are sent to base station by data transmission unit 802.
The specific mode of the embodiment of the present invention can refer to the specific of the data transmission method shown in fig. 5 for V2X
Embodiment, details are not described herein again.
The embodiment of the invention also discloses another data transmission methods, are used for subscriber terminal side, data transmission method
It may include: the transfer resource that detection is used for V2X, and determine subset of resources；When the subset of resources can not be used for transmission V2X
When data, determine to forward the V2X data by base station.
In specific implementation, after base station is resource pool of the UE distribution for automatic resource selection, the access layer of UE detects hair
When existing subset of resources can not be used for transmission V2X data, the AS layer of UE is sent to the NAS layer of UE cannot be (i.e. straight using PC5 interface
Chain link road) transmission V2X data instruction, the NAS layer initiating business request of UE, foundation is used for transmission the carrying of V2X business.This
When, for core net after receiving service request, needing to send newly-established carrying to base station is the mark for being used for transmission V2X business
Know, to guarantee the smooth transmission of V2X data.Specifically, radio bearer can be established by Uu interface.
In specific implementation, user terminal can determine to forward the V2X data: the money by base station in the situation
Source subset is sky, the transfer resource in the subset of resources is not enough to transmit the V2X data of single, in the subset of resources
The transfer resource transfer resource that is not enough to transmit in Preset Transfer time delay in the V2X data and the subset of resources account for institute
There is the ratio of transfer resource lower than pre-determined threshold.
User terminal of the embodiment of the present invention initiates to carry in time, and by Uu interface transmit V2X data so that UE can and
When transmit V2X data.
The embodiment of the invention also discloses a kind of base station, the base station may include the resource as shown in FIG. 6 for V2X
Configuration device.
The embodiment of the invention also discloses a kind of terminal, the user terminal may include that Fig. 7 or shown in Fig. 8 such as is used for
The data transmission device of V2X.The terminal can be user terminal, specifically, the terminal can be in V2X business
User terminal, including but not limited to vehicle, vehicular communication equipment.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (6)
1. a kind of data transmission method for V2X characterized by comprising
Detection is used for the transfer resource of V2X, and determines subset of resources；
When the subset of resources is not enough to be used for transmission V2X data, determine to forward the V2X data by base station.
2. data transmission method according to claim 1, which is characterized in that described to forward the V2X data by base station
Include:
Non-Access Stratum initiating business request is notified by access layer, establishes the carrying for being used for transmission the V2X data；
The V2X data are transmitted to the base station, to forward the V2X data by the base station by the carrying.
3. a kind of data transmission device for V2X characterized by comprising
Detection unit is adapted to detect for the transfer resource for V2X, and determines subset of resources；
Retransmission unit, suitable for when the subset of resources can not be used for transmission V2X data, determining by described in the forwarding of base station
V2X data.
4. data transmission device according to claim 3, which is characterized in that the retransmission unit includes: that son is established in carrying
Unit is suitable for notifying Non-Access Stratum initiating business request by access layer, establishes the carrying for being used for transmission the V2X data；
Transmission subelement is suitable for transmitting the V2X data by the carrying to the base station, to forward institute by the base station
State V2X data.
5. a kind of storage medium, is stored thereon with computer instruction, which is characterized in that the right of execution when computer instruction is run
Benefit require 1 or 2 described in data transmission the step of.
6. a kind of user equipment, including memory and processor, it is stored with and can runs on the processor on the memory
Computer instruction, which is characterized in that when the processor runs the computer instruction perform claim require 1 or 2 described in
The step of data are transmitted.
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| CN201910796577.0A CN110366137A (en) | 2016-08-12 | 2016-08-12 | Data transmission method and device, storage medium, user equipment for V2X |
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| CN201610665571.6A CN107734704A (en) | 2016-08-12 | 2016-08-12 | Resource distribution and data transmission method and device, base station, terminal for V2X |
| CN201910796577.0A CN110366137A (en) | 2016-08-12 | 2016-08-12 | Data transmission method and device, storage medium, user equipment for V2X |
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| CN110248412B (en) * | 2018-03-07 | 2021-12-31 | 华为技术有限公司 | Transmission method, equipment and system for preemption information |
| CN110858958B (en) * | 2018-08-23 | 2021-09-07 | 华为技术有限公司 | Communication method and device of V2X |
| CN110972297B (en) * | 2018-09-30 | 2022-08-26 | 华为技术有限公司 | Signal transmission method and device |
| CN111132243B (en) * | 2018-10-31 | 2022-10-28 | 展讯通信（上海）有限公司 | V2X transmission method, device and user equipment |
| CN111224740B (en) * | 2018-11-23 | 2022-03-29 | 华为技术有限公司 | Control information sending and receiving method and terminal equipment |
| WO2020132869A1 (en) | 2018-12-25 | 2020-07-02 | 广东欧珀移动通信有限公司 | Resource allocation method and terminal device |
| CN113676869A (en) * | 2019-08-09 | 2021-11-19 | 维沃移动通信有限公司 | Side link resource mapping method, transmission method, network equipment and terminal equipment |
| CN115915401A (en) * | 2022-04-26 | 2023-04-04 | 中兴通讯股份有限公司 | Transmission method, terminal device, management entity and storage medium |
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