CN107612666A - A kind of data transmission method and device in V2X - Google Patents
A kind of data transmission method and device in V2X Download PDFInfo
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- CN107612666A CN107612666A CN201610539514.3A CN201610539514A CN107612666A CN 107612666 A CN107612666 A CN 107612666A CN 201610539514 A CN201610539514 A CN 201610539514A CN 107612666 A CN107612666 A CN 107612666A
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Abstract
The invention discloses a kind of data transmission method and device in V2X.This method includes：The configuration mode of resource pool can be obtained；According to the configuration mode of the resource pool of acquisition, the V2X message sizes and delay requirement that receive, the resource of the V2X message is transmitted in selection, and supports the adjacent resource of SA and data frequency of use；With relatively low SA blind check complexities.
Description
Technical field
The present embodiments relate to the technical field of communication, more particularly to a kind of data transmission method and dress in V2X
Put.
Background technology
In V2X (vehicle to X) communications, a V2X message is by SA (control information) and data (data message) two
Part is formed.SA is for resource location and configured transmission where indicating data, the X resource block taken on frequency domain
(RB), X is a fixed value.Data is used to transmit V2X application datas, and its size of data and QoS demand are according to class of business
It is different and different, it is therefore, also different therewith in the RB numbers that frequency domain takes.The SA and its data of association can pass in same subframe
It is defeated, can also be in different sub-frame transmissions.
When SA and its data of association are in same sub-frame transmission, in order to reduce peak power drop-out value (Maximum
Power reduction, MPR), it is desirable to the resource that SA and data are used is adjacent on frequency domain.Meanwhile in order to reduce SA's
, it is necessary to define SA resource pools and data resource pools, the resource for transmitting SA can only select blind check complexity in SA resource pools.
At present, existing resource pool design can not meet 2 points of the above simultaneously.
The content of the invention
The purpose of the embodiment of the present invention is in a kind of data transmission method and device in V2X of proposition, it is intended to solves such as
What can use adjacent frequency resource and have relatively low SA blind check complexities when SA and data is in same sub-frame transmission
Problem.
To use following technical scheme up to this purpose, the embodiment of the present invention：
In a first aspect, a kind of data transmission method in V2X, methods described includes：
Obtain the configuration mode of resource pool；
According to the configuration mode of V2X message sizes, delay requirement and the resource pool received, select described in transmission
The resource of V2X message.
Preferably, the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, each subband
Amount of bandwidth is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control letter respectively
It is adjacent in frequency to cease resource pool and the data message resource pool；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, described
The band a width of Wn, Wn of data message resource pool size are configured by the base station or pre-configured, Bn=X+Wn.
Preferably, the configuration mode of the basis receives V2X message sizes, delay requirement and the resource pool, choosing
The resource for transmitting the V2X message is selected, including：
If each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message in frequency domain up to
Need to take Y resource block less, then in the subframe of delay requirement is met, the suitable subband of bandwidth is selected according to Y size, selected
The transmitted over resources control information for the control information resource pool on suitable subband selected, the transmitted over resources of data message resource pool
Data message；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or in different subframes not
Same subband.
Preferably, the configuration mode of the basis receives V2X message sizes, delay requirement and the resource pool, choosing
The resource for transmitting the V2X message is selected, including：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N subband is selected, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the resource of data message resource pool
Transmitting data information.
Preferably, the transmitted over resources control information of the control information resource pool in M subband, data message resource
The transmitted over resources data message in pond, including：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled
The transmission of information；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
Preferably, the configuration mode of the basis receives V2X message sizes, delay requirement and the resource pool, choosing
The resource for transmitting the V2X message is selected, including：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N is selected ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data
Information.
Preferably, the transmitted over resources control information of the control information resource pool of a subband wherein, remaining money
Source transmitting data information, including：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the biography of information
It is defeated；
Data message is mapped in remaining resource, carries out the transmission of data message.
Second aspect, a kind of device of data transfer, described device include：
Acquisition module, for obtaining the configuration mode of resource pool；
Selecting module, the configuration mode of the V2X message sizes, delay requirement and the resource pool that are received for basis,
The resource of the V2X message is transmitted in selection.
Preferably, the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, each subband
Amount of bandwidth is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control letter respectively
It is adjacent in frequency to cease resource pool and the data message resource pool；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, described
The band a width of Wn, Wn of data message resource pool size are configured by the base station or pre-configured, Bn=X+Wn.
Preferably, the selecting module, is used for：
If each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message in frequency domain up to
Need to take Y resource block less, then
In the subframe of delay requirement is met, the suitable subband of bandwidth is selected according to Y size, on the suitable subband of selection
Control information resource pool transmitted over resources control information, the transmitted over resources data message of data message resource pool；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or in different subframes not
Same subband.
Preferably, the selecting module, is used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N subband is selected, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the resource of data message resource pool
Transmitting data information.
Preferably, the selecting module, is additionally operable to：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled
The transmission of information；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
Preferably, the selecting module, is used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N is selected ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data
Information.
Preferably, the selecting module, is additionally operable to：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the biography of information
It is defeated；
Data message is mapped in remaining resource, carries out the transmission of data message.
The embodiment of the present invention provides a kind of data transmission method and device in V2X, obtains the configuration mode of resource pool；
According to the configuration mode of V2X message sizes, delay requirement and the resource pool received, the V2X message is transmitted in selection
Resource, so as to support the adjacent resource of SA and data frequency of use；User detects SA only at a limited number of after subband is divided
Position, it is not necessary to detected over the whole width, therefore, blind check complexity can be reduced.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet for data transmission method in V2X that the embodiment of the present invention one provides；
Fig. 2 is the method schematic diagram of seed belt bandwidth partition provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic flow sheet for data transmission method in V2X that the embodiment of the present invention two provides；
Fig. 4 is a kind of method schematic diagram for configuring subband provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic flow sheet for data transmission method in V2X that the embodiment of the present invention three provides；
Fig. 6 is the method schematic diagram of another configuration subband provided in an embodiment of the present invention；
Fig. 7 is a kind of schematic flow sheet for data transmission method in V2X that the embodiment of the present invention four provides；
Fig. 8 is a kind of high-level schematic functional block diagram of the device of data transfer provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
Embodiment one
With reference to figure 1, Fig. 1 is a kind of flow signal for data transmission method in V2X that the embodiment of the present invention one provides
Figure.
As shown in figure 1, the data transmission method in V2X includes：
Step 101, the configuration mode of resource pool is obtained；
Specifically, the realization body of the present embodiment is not limited to base station or user, following specific implementation include but
It is not limited to base station or user.
Specifically, as shown in Fig. 2 Fig. 2 is the method schematic diagram of seed belt bandwidth partition provided in an embodiment of the present invention.
System bandwidth is divided into N number of subband, wherein the bandwidth B n (n=1 ... N) of each subband can be identical or difference
, by eNB configurations or pre-configured.
Each subband includes two parts, corresponds to SA resource pools and data resource pools respectively, the two is adjacent in frequency.
Wherein the bandwidth of SA resource pools is equal to a width of Wn of band of RB numbers X, the data resource pool shared by SA message, and Wn size is by eNB
Configuration is pre-configured.There is Bn=X+Wn by defined above.
Preferably, the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, each subband
Amount of bandwidth is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control letter respectively
It is adjacent in frequency to cease resource pool and the data message resource pool；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, described
The band a width of Wn, Wn of data message resource pool size are configured by the base station or pre-configured, Bn=X+Wn.
Step 102, passed according to the configuration mode of V2X message sizes, delay requirement and the resource pool received, selection
The resource of the defeated V2X message.
Specifically, when distributing resource by base station：The configuration in base station known resource pond, receive after the request of user according to resource
Pond configures selects available resources with the V2X message sizes and delay requirement included in user request information, and notifies user at this
Transmitted over resources.
When user independently selects resource：The configuration of resource pool is pre-configured or base station is allocated to user, and user has V2X to disappear
Available resources are selected according to resource pool configuration and V2X message sizes and delay requirement after breath, and transmitted on the resource.
The embodiment of the present invention provides a kind of data transmission method in V2X, obtains the configuration mode of resource pool；According to connecing
The resource of the V2X message is transmitted in the configuration mode of the V2X message sizes, delay requirement and the resource pool that receive, selection, from
And support the adjacent resource of SA and data frequency of use；User detects SA only in a limited number of individual position after subband is divided, no
Need to be detected over the whole width, therefore, blind check complexity can be reduced.
Embodiment two
With reference to figure 3, Fig. 3 is a kind of flow signal for data transmission method in V2X that the embodiment of the present invention two provides
Figure.
As shown in figure 3, the data transmission method in V2X includes：
Step 301, the configuration mode of resource pool is obtained；
Step 302, if each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message exists
At least need to take Y resource block on frequency domain, then in the subframe of delay requirement is met, select bandwidth suitable according to Y size
Subband, the transmitted over resources control information of the control information resource pool on the suitable subband of selection, data message resource pool
Transmitted over resources data message；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or in different subframes not
Same subband.
Specifically, a V2X message is directed to, if its data at least needs Y RB of occupancy just to can guarantee that reliable biography in frequency domain
It is defeated.Can be that different sub-band (can be in a subframe when each subband bandwidth difference in the resource pool that system allows configuration
Different sub-band on different sub-band or different subframes) the different bandwidth of distribution.Can now delay requirement met
In subframe, the suitable subband of bandwidth is selected according to Y size, in transmitted over resources SA, the data money of the SA resource pools of the subband
The transmitted over resources data in source pond.
Specifically, system allows each subband bandwidth in the resource pool of configuration different in this example, as shown in figure 4, Fig. 4 is this
A kind of method schematic diagram for configuration subband that inventive embodiments provide.The configuration of subband is pre-configured or is allocated to use by eNB
Family.
After one V2X message reaches, according to its size of data and QoS demand, at least need to take the bandwidth ability of half
Ensure transmitting, therefore selection can meet that the subband of bandwidth requirement is used to transmit this in the subframe for meet delay requirement
Message, the subband that dotted line frame marks in figure.
Embodiment three
With reference to figure 5, Fig. 5 is a kind of flow signal for data transmission method in V2X that the embodiment of the present invention three provides
Figure.
As shown in figure 5, the data transmission method in V2X includes：
Step 501, the configuration mode of resource pool is obtained；
Step 502, if each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y on frequency domain
Individual resource block, then in the subframe of delay requirement is met, continuous N subband is selected, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the resource of data message resource pool
Transmitting data information.
Preferably, the transmitted over resources control information of the control information resource pool in M subband, data message resource
The transmitted over resources data message in pond, including：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled
The transmission of information；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
Specifically, when each subband bandwidth must be identical in system, if subband width is W, following two sides can be used
Case：One kind of both the above scheme is can be used alone in a system, can also all be used, and is needed when all using in SA
Increase 1bit information illustrates that this V2X message uses any scheme transmission.
In some meets the subframe of delay requirement, continuous N subband is selected, wherein M meets (W-X) × M >=Y.In this M
The transmitted over resources data of transmitted over resources SA, the data resource pool of the SA resource pools of individual subband.SA is copied into M parts, respectively
It is mapped in the resource of the SA resource pools of M subband；Data is mapped in the resource of the data resource pools of M subband.
Specifically, bandwidth is equally divided into 4 parts when system divides subband in this example, as shown in fig. 6, Fig. 6 is the present invention
The method schematic diagram for another configuration subband that embodiment provides.The configuration of subband is pre-configured or is allocated to user by eNB.
After one V2X message reaches, according to its size of data and QoS demand, at least need to take the bandwidth ability of half
Ensure transmitting, therefore select in the subframe for meet delay requirement continuous 2 subbands to be used to transmitting this message, it is empty in figure
The subband of wire frame mark.Its SA and data resource impact scheme uses the first, i.e., SA is copied into 2 parts, be respectively mapped to 2
In the resource of the SA resource pools of subband；Data is mapped in the resource of the data resource pools of 2 subbands.
A kind of method that the embodiment of the present invention provides data transfer in V2X, control information is copied into M parts, reflected respectively
It is mapped in the resource of the control information resource pool of M subband, is controlled the transmission of information；Data message is mapped to M son
In the resource of the data message resource pool of band, the transmission of data message is carried out, can be flexible according to business demand and system load
Choose for user scheme, improve transmission reliability or reduce resource occupation.
Example IV
With reference to figure 7, Fig. 7 is a kind of flow signal for data transmission method in V2X that the embodiment of the present invention four provides
Figure.
As shown in fig. 7, the data transmission method in V2X includes：
Step 701, the configuration mode of resource pool is obtained；
Step 702, if each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y on frequency domain
Individual resource block, then in the subframe of delay requirement is met, select continuous N ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data
Information.
Preferably, the selected control information resource pool for being used to transmit control information is located at the marginal position of the individual subbands of M '.
Preferably, the transmitted over resources control information of the control information resource pool of a subband wherein, remaining money
Source transmitting data information, including：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the biography of information
It is defeated；
Data message is mapped in remaining resource, carries out the transmission of data message.
Specifically, selection continuous N ' individual subband, wherein M ' meets W × M '-X >=Y.In the SA resource pools of first subband
Transmitted over resources SA, remaining transmitted over resources data.SA is mapped in the resource of SA resource pools of first subband；Will
Data is mapped in remaining resource.
Specifically, bandwidth is equally divided into 4 parts when system divides subband in this example, as shown in fig. 6, the configuration of subband is
It is pre-configured or user is allocated to by eNB.
After one V2X message reaches, according to its size of data and QoS demand, at least need to take the bandwidth ability of half
Ensure transmitting, thus select in the subframe for meet delay requirement continuous 2 subbands be used to transmitting this message it is (empty in figure
The subband of wire frame mark).Its SA and data resource impact scheme is used second, i.e., SA is mapped to the SA of first subband
In the resource of resource pool；Data is mapped in remaining resource.
A kind of method that the embodiment of the present invention provides data transfer in V2X, first son is mapped to by control information
In the resource of the control information resource pool of band, the transmission of information is controlled；Data message is mapped in remaining resource, entered
The transmission of row data message, can according to business demand and the flexible Choose for user scheme of system load, improve transmission reliability or
Reduce resource occupation.
Embodiment five
With reference to figure 8, Fig. 8 is a kind of high-level schematic functional block diagram of the device of data transfer provided in an embodiment of the present invention.
As shown in figure 8, described device includes：
Acquisition module 801, for obtaining the configuration mode of resource pool；
Preferably, the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, each subband
Amount of bandwidth is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control letter respectively
It is adjacent in frequency to cease resource pool and the data message resource pool；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, described
The band a width of Wn, Wn of data message resource pool size are configured by the base station or pre-configured, Bn=X+Wn.
Selecting module 802, for the configuration side according to V2X message sizes, delay requirement and the resource pool received
The resource of the V2X message is transmitted in formula, selection.
Preferably, the selecting module 802, is used for：
If each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message in frequency domain up to
Need to take Y resource block less, then in the subframe of delay requirement is met, the suitable subband of bandwidth is selected according to Y size, selected
The transmitted over resources control information for the control information resource pool on suitable subband selected, the transmitted over resources of data message resource pool
Data message；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or in different subframes not
Same subband.
Preferably, the selecting module 802, is used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N subband is selected, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the resource of data message resource pool
Transmitting data information.
Preferably, the selecting module 802, is additionally operable to：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled
The transmission of information；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
Preferably, the selecting module 802, is used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain,
Then in the subframe of delay requirement is met, continuous N is selected ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data
Information.
Preferably, the selecting module 802, is additionally operable to：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the biography of information
It is defeated；
Data message is mapped in remaining resource, carries out the transmission of data message.
The embodiment of the present invention provides a kind of data transmission device in V2X, obtains the configuration mode of resource pool；According to connecing
The resource of the V2X message is transmitted in the configuration mode of the V2X message sizes, delay requirement and the resource pool that receive, selection, from
And support the adjacent resource of SA and data frequency of use；User detects SA only in a limited number of individual position after subband is divided, no
Need to be detected over the whole width, therefore, blind check complexity can be reduced.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and the limitation to protection domain of the embodiment of the present invention can not be construed in any way.Based on herein
Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention
Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.
Claims (14)
1. a kind of data transmission method in V2X, it is characterised in that methods described includes：
Obtain the configuration mode of resource pool；
According to the configuration mode of V2X message sizes, delay requirement and the resource pool received, selection is transmitted the V2X and disappeared
The resource of breath.
2. according to the method for claim 1, it is characterised in that the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, the bandwidth of each subband
Size is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control information money respectively
Source pond and the data message resource pool are adjacent in frequency；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, the data
Band a width of Wn, Wn in information resources pond size are configured by the base station or pre-configured, Bn=X+Wn.
3. according to the method for claim 1, it is characterised in that V2X message sizes, the delay requirement that the basis receives
With the configuration mode of the resource pool, the resource of the V2X message is transmitted in selection, including：
If each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message at least needs on frequency domain
Y resource block is taken, then in the subframe of delay requirement is met, the suitable subband of bandwidth is selected according to Y size, in selection
The transmitted over resources control information of control information resource pool on suitable subband, the transmitted over resources data of data message resource pool
Information；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or difference in different subframes
Band.
4. according to the method for claim 1, it is characterised in that V2X message sizes, the delay requirement that the basis receives
With the configuration mode of the resource pool, the resource of the V2X message is transmitted in selection, including：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain, then exists
Meet in the subframe of delay requirement, select continuous N subband, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the transmitted over resources of data message resource pool
Data message.
5. according to the method for claim 4, it is characterised in that the resource of the control information resource pool in M subband
Upper transmission control information, the transmitted over resources data message of data message resource pool, including：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled information
Transmission；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
6. according to the method for claim 1, it is characterised in that V2X message sizes, the delay requirement that the basis receives
With the configuration mode of the resource pool, the resource of the V2X message is transmitted in selection, including：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain, then exists
Meet in the subframe of delay requirement, select continuous N ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data letter
Breath.
7. according to the method for claim 6, it is characterised in that the control information resource pool of a subband wherein
Transmitted over resources control information, remaining transmitted over resources data message, including：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the transmission of information；
Data message is mapped in remaining resource, carries out the transmission of data message.
8. a kind of data transmission device in V2X, it is characterised in that described device includes：
Acquisition module, for obtaining the configuration mode of resource pool；
Selecting module, for the configuration mode according to V2X message sizes, delay requirement and the resource pool received, selection
Transmit the resource of the V2X message.
9. device according to claim 8, it is characterised in that the configuration mode of the resource pool is：
System bandwidth is divided into N number of subband, wherein, the bandwidth B n sizes of each subband are identical or different, the bandwidth of each subband
Size is by eNB configurations or pre-configured；
Each subband includes two parts, corresponds to control information resource pool and data message resource pool, the control information money respectively
Source pond and the data message resource pool are adjacent in frequency；
Wherein, the bandwidth of the control information resource pool is equal to the number of resources X shared by the control information message, the data
Band a width of Wn, Wn in information resources pond size are configured by the base station or pre-configured, Bn=X+Wn.
10. device according to claim 8, it is characterised in that the selecting module, be used for：
If each subband bandwidth is different in the resource pool of system configuration, and the data message of the V2X message at least needs on frequency domain
Y resource block is taken, then in the subframe of delay requirement is met, the suitable subband of bandwidth is selected according to Y size, in selection
The transmitted over resources control information of control information resource pool on suitable subband, the transmitted over resources data of data message resource pool
Information；
Wherein, the subband of the different bandwidth includes the different sub-band in a subframe, or difference in different subframes
Band.
11. device according to claim 8, it is characterised in that the selecting module, be used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain, then exists
Meet in the subframe of delay requirement, select continuous N subband, wherein M meets (W-X) × M >=Y；
In the transmitted over resources control information of the control information resource pool of M subband, the transmitted over resources of data message resource pool
Data message.
12. device according to claim 11, it is characterised in that the selecting module, be additionally operable to：
Control information is copied into M parts, in the resource for the control information resource pool for being respectively mapped to M subband, is controlled information
Transmission；
Data message is mapped in the resource of the data message resource pool of M subband, carries out the transmission of data message.
13. device according to claim 8, it is characterised in that the selecting module, be used for：
If each subband bandwidth W is identical, the data message of the V2X message at least needs to take Y resource block on frequency domain, then exists
Meet in the subframe of delay requirement, select continuous N ' individual subband, wherein M ' meets W × M '-X >=Y；
The transmitted over resources control information of the control information resource pool of a subband wherein, remaining transmitted over resources data letter
Breath.
14. device according to claim 13, it is characterised in that the selecting module, be additionally operable to：
Control information is mapped in the resource of the control information resource pool of first subband, is controlled the transmission of information；
Data message is mapped in remaining resource, carries out the transmission of data message.
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