CN106559443A - The system of selection of car networking V2X service transmission path and device - Google Patents
The system of selection of car networking V2X service transmission path and device Download PDFInfo
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- CN106559443A CN106559443A CN201510624701.7A CN201510624701A CN106559443A CN 106559443 A CN106559443 A CN 106559443A CN 201510624701 A CN201510624701 A CN 201510624701A CN 106559443 A CN106559443 A CN 106559443A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
Abstract
The invention provides a kind of system of selection of car networking V2X service transmission path and device, wherein, the method includes:Roadside unit RSU determines the transmission strategy of the transmission path for being used for indicating transmission car networking V2X business between RSU and board units OBU, wherein, transmission path includes multiple transmission paths, the priority orders between multiple transmission paths with transmission;RSU selects to support the transmission path of V2X business according to the priority orders of transmission strategy and transmission path.By the present invention, solve in correlation technique due to the movement of vehicle, cause the variations of PC5/Uu interfaces, original transmission path to be no longer appropriate for V2X business, the problem for causing the transmission of V2X business to be obstructed has reached the efficiency for improving transmission V2X business.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of system of selection of car networking V2X service transmission path
And device.
Background technology
As economic society high speed development, automobile usage amount are increased rapidly, road traffic accident frequently occurs, it has also become near
Affect one of key factor of China's public security perception over year, traffic safety problem have become impact social harmony and
One of basic problem for improving People's livelihood.China in the urgent need to improving traffic safety from each side such as technology, policy, education,
It is important component part therein wherein to lift vehicle safety design.
The technology for lifting vehicle safety is broadly divided into passive security technology and active safety technologies.Passive security technology for
Protection after accident occurs, to the outer personnel of in-car, car and article;Active safety technologies are used to preventing and reducing vehicle generation
Accident, it is to avoid personnel come to harm;Active safety technologies are the emphasis and trend of modern vehicle safe practice development.
Based on the collision warning systems of communication, by using advanced wireless communication technology and generation information treatment technology,
The real-time information interaction between car and car, car and trackside infrastructure is realized, informs that state current each other (includes vehicle
Position, speed, acceleration, driving path) and the road environment information known, collaborative sensing road hazard condition, and
When various anti-collision warning informations are provided, prevent the generation of traffic safety accident, become current various countries and attempt solving road
A kind of new thinking of traffic safety problem.
Car networking (Vehicle to Everything, referred to as V2X):Refer to by the sensor that is loaded on vehicle,
Car-mounted terminal and electronic tag provide information of vehicles, using the various communication technologys realize car and car (Vehicle to Vehicle,
Referred to as V2V), car and people (Vehicle to Pedestrian, referred to as V2P), Che Yulu (Vehicle to Infrastructure,
Referred to as V2I) interconnect, and the effectively utilizes such as carry out extracting to information, share on information network platform, to car
Carry out effective management and control and integrated service is provided.Fig. 1 is to send traffic, scheduling letter to vehicle by network information platform
The schematic diagram of breath.
Recently as the development of new mobile communication technology, occurred in that using LTE technologies in the world to solve to join based on car
The research of Network Communication application.
Roadside communication unit (Road Side Unit, referred to as RSU) can receive vehicle request, it is ensured that vehicle is accessed
Internet, the function of having gateway;In addition, it also possesses data operation, storage, the function of forwarding.
There are two kinds of car networkings to realize technology at present:Dedicated Short Range Communications (Dedicated Short Range
Communication, referred to as DSRC) and LTE, wherein DSRC be based on IEEE802.11P and IEEE1609
Series standard, 802.11P are responsible for physical layer and medium education (Medium Access Control, referred to as MAC)
Technology, 1609 are responsible for upper strata specification.Just entered on based on the V2X technologies of LTE, also no standard.
The LTE V2X technologies that 3GPP is being discussed at present include:RSU can pass through static UE or eNB and realize,
V2V/V2I/V2P may pass through PC5 interfaces or Uu interfaces realize that wherein PC5 interfaces refer to device-to-device D2D
Air interface, Uu interfaces refer to the air interface of UE to eNB.
In the research and practice process of the car networking in correlation technique, inventor has found there is problems with:V2X industry
Business can be transmitted by PC5 or Uu interfaces, due to the movement of vehicle, cause the variations of PC5/Uu interfaces,
Original transmission path is no longer appropriate for V2X business, and then the V2X business transmission of causing is obstructed.
For the problems referred to above in correlation technique, not yet there is effective solution at present.
The content of the invention
The invention provides a kind of system of selection of car networking V2X service transmission path and device, at least to solve correlation
Due to the movement of vehicle in technology, the variations of PC5/Uu interfaces, original transmission path are caused to be no longer appropriate for
V2X business, the problem for causing the transmission of V2X business to be obstructed.
According to another aspect of the present invention, there is provided a kind of system of selection of car networking V2X service transmission path, wrap
Include:Roadside unit RSU is determined between the RSU and board units OBU for indicating transmission car networking V2X business
Transmission path transmission strategy, wherein, the transmission path includes multiple transmission paths, between multiple transmission paths have
There are the priority orders of transmission;The RSU is selected according to the priority orders of the tactful and described transmission path of the transmission
Support the transmission path of the V2X business.
Further, the transmission path includes:For transmitting the interface of the V2X business, for transmitting the V2X
The relaying relay of business, the adjacent cell for transmitting the V2X business, wherein, it is described for transmitting the V2X industry
The interface of business includes:Uu interfaces, PC5 interfaces.
Further, when the transmission path being currently in use between the RSU and the OBU is the Uu interfaces,
First priority orders of transmission order from high to low is:The Uu interfaces, the adjacent cell, the PC5
Interface, the relaying relay;When between the RSU and the OBU, current transmission path is the PC5 interfaces,
Second priority orders of transmission order from high to low is:The PC5 interfaces, the Uu interfaces, it is described in
After relay.
Further, in the OBU in the RSU coverages, and make between the RSU and the OBU
When transmission path is the Uu interfaces, priority of the RSU according to the tactful and described transmission path of the transmission
Order selects to support that the transmission path of the V2X business includes:The RSU judges whether the transmission strategy indicates institute
State Uu interfaces to be unsatisfactory for supporting the condition of the transmission V2X business;When judged result is to be, the RSU is to institute
State OBU and send the first configured information, wherein, it is suitable according to first priority that first configured information is used for instruction
Sequence selects the transmission path for supporting the V2X business.
Further, in the OBU in the RSU coverages, and between the RSU and the OBU when
When front transmission path is the PC5 interfaces, priority of the RSU according to the tactful and described transmission path of the transmission
Order selects to support that the transmission path of the V2X business includes:The RSU judges whether the transmission strategy indicates institute
State PC5 interfaces to be unsatisfactory for supporting the condition of the transmission V2X business;When judged result is to be, the RSU is to institute
State OBU and send the second configured information, wherein, it is suitable according to second priority that second configured information is used for instruction
Sequence selects the transmission path for supporting the V2X business.
Further, move in the OBU is by RSU coverages extroversion coverage, and the RSU
When current transmission path is the PC5 interfaces or the relaying relay between the OBU, the RSU is according to institute
Stating the transmission path needed for the priority orders selection for transmitting tactful and described transmission path includes:The RSU judges institute
State whether transmission strategy indicates that the PC5 interfaces or the Uu interfaces are unsatisfactory for supporting the bar of the transmission V2X business
Part;When judged result is to be, the RSU sends the 4th configured information to the OBU, wherein, the described 4th refers to
Show information for indicating that the OBU selects the Uu interfaces to switch the PC5 interfaces or the relaying relay.
Further, the transmission strategy includes at least one of:The signal that the measurement parameter of the transmission path is characterized
The tactful, RSU of transmission that quality is indicated is local/and the transmission strategy of the default transmission path of operator, system load be equal
Transmitting for the transmission path that weighing apparatus is indicated is tactful, the transmission strategy of the transmission path that the OBU requests are indicated.
Further, obtain between the RSU and board units OBU for indicating transmission vehicle in roadside unit RSU
Before the transmission strategy of the transmission path of networking V2X business, methods described also includes:The RSU is sent to OBU
The measurement parameter, wherein, the measurement parameter is used to indicate the letter that OBU measures the PC5 interfaces and Uu interfaces
Number quality.
Further, the measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding,
Measurement event.
According to another aspect of the present invention, there is provided a kind of system of selection of car networking V2X service transmission path, wrap
Include:Board units OBU is determined between the RSU and board units OBU for indicating transmission car networking V2X business
Transmission path transmission strategy, wherein, the transmission path includes multiple transmission paths;The OBU is according to described
Transmission policy selection supports the transmission path of the V2X business.
Further, the transmission path includes:For transmitting the PC5 interfaces of the V2X business, for transmitting
State the relaying relay of V2X business.
Further, the OBU is moved outside the RSU coverages, and between the RSU and the OBU
When current transmission path is the relaying relay or described PC5 interfaces, the OBU is according to the transmission policy selection
Support that the transmission path footpath of the V2X business includes:The OBU judges whether the transmission strategy indicates the relaying
Relay or described PC5 interfaces are unsatisfactory for the condition for supporting the transmission V2X business;It is when judged result is to be, described
OBU selects the transmission path for supporting the V2X business.
Further, move to outside coverage from the RSU coverages in the OBU, and the RSU
When current transmission path is the PC5 interfaces or the relaying relay between the OBU, the OBU is according to institute
State transmission policy selection and support that the transmission path of the V2X business includes:Whether the RSU judges the transmission strategy
Indicate that the PC5 interfaces or the relaying relay are unsatisfactory for supporting the transmission V2X professional qualifications;In judged result it is
When being, the OBU selects the transmission path for supporting the V2X business.
Further, the transmission strategy includes at least one of:The signal that the measurement parameter of the transmission path is characterized
The tactful, RSU of transmission that quality is indicated is local/the default transmission strategy of operator, the transmission plan of system load balancing
Slightly, the transmission strategy of OBU requests.
Further, the measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding,
Measurement event.
According to a further aspect of the invention, there is provided a kind of selecting device of car networking V2X service transmission path, should
For roadside unit side, including:First determining module, is used between the RSU and board units OBU for determining
The transmission strategy of the transmission path of transmission car networking V2X business is indicated, wherein, the transmission path includes multiple transmission
Path, the priority orders between multiple transmission paths with transmission;First choice module, for according to the transmission plan
Slightly select to support the transmission path of the V2X business with the priority orders of the transmission path.
Further, the transmission path includes:For transmitting the interface of the V2X business, for transmitting the V2X
The relaying relay of business, the adjacent cell for transmitting the V2X business, wherein, it is described for transmitting the V2X industry
The interface of business includes:Uu interfaces, PC5 interfaces.
Further, when the transmission path being currently in use between the RSU and the OBU is the Uu interfaces,
First priority orders of transmission order from high to low is:The Uu interfaces, the adjacent cell, the PC5
Interface, the relaying relay;When between the RSU and the OBU, current transmission path is the PC5 interfaces,
Second priority orders of transmission order from high to low is:The PC5 interfaces, the Uu interfaces, it is described in
After relay.
Further, in the OBU in the RSU coverages, and make between the RSU and the OBU
When transmission path is the Uu interfaces, the first choice module includes:First judging unit, for judging
State whether transmission strategy indicates that the Uu interfaces are unsatisfactory for supporting the condition of the transmission V2X business;First transmitting element,
For when judged result is to be, sending the first configured information to the OBU, wherein, first configured information is used
Select to support the transmission path of the V2X business according to first priority orders in instruction.
Further, in the OBU in the RSU coverages, and between the RSU and the OBU when
When front transmission path is the PC5 interfaces, the first choice module includes:Second judging unit, it is described for judging
Whether transmission strategy indicates that the PC5 interfaces are unsatisfactory for supporting the condition of the transmission V2X business;Second transmitting element,
For when judged result is to be, sending the second configured information to the OBU, wherein, second configured information is used
Select to support the transmission path of the V2X business according to second priority orders in instruction.
Further, move in the OBU is by RSU coverages extroversion coverage, and the RSU
When current transmission path is the PC5 interfaces or the relaying relay between the OBU, the first choice mould
Block includes:3rd judging unit, for judging whether the transmission strategy indicates the PC5 interfaces or the Uu interfaces
It is unsatisfactory for supporting the condition of the transmission V2X business;3rd transmitting element, for when judged result is to be, to institute
State OBU and send the 4th configured information, wherein, the 4th configured information is used to indicate that the OBU selects the Uu
Interface is switching the PC5 interfaces or the relaying relay.
Further, the transmission strategy includes at least one of:The signal that the measurement parameter of the transmission path is characterized
The tactful, RSU of transmission that quality is indicated is local/and the transmission strategy of the default transmission path of operator, system load be equal
Transmitting for the transmission path that weighing apparatus is indicated is tactful, the transmission strategy of the transmission path that the OBU requests are indicated.
Further, obtain between the RSU and board units OBU for indicating transmission vehicle in roadside unit RSU
Before the transmission strategy of the transmission path of networking V2X business, described device also includes:Sending module, for OBU
The measurement parameter is sent, wherein, the measurement parameter is used to indicate that OBU measures the PC5 interfaces and Uu interfaces
Signal quality.
Further, the measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding,
Measurement event.
According to a further aspect of the invention, there is provided a kind of selecting device of car networking V2X service transmission path, should
For board units OBU sides, including:Second determining module, for determine the RSU and board units OBU it
Between for indicate transmission car networking V2X business transmission path transmission strategy, wherein, the transmission path includes many
Individual transmission path;Second selecting module, for the transmission road of the V2X business is supported according to the transmission policy selection
Footpath.
Further, the transmission path includes:For transmitting the PC5 interfaces of the V2X business, for transmitting
State the relaying relay of V2X business.
Further, the OBU is moved outside the RSU coverages, and between the RSU and the OBU
When current transmission path is the relaying relay or described PC5 interfaces, second selecting module includes:4th judges
Unit, for judging whether the transmission strategy indicates that the relaying relay or described PC5 interfaces are unsatisfactory for supporting transmission
The condition of the V2X business;First choice unit, for when judged result is to be, selecting to support the V2X industry
The transmission path of business.
Further, move to outside coverage from the RSU coverages in the OBU, and the RSU
When current transmission path is the PC5 interfaces or the relaying relay between the OBU, described second selects mould
Block includes:4th judging unit, for judging whether the transmission strategy indicates the PC5 interfaces or the relaying relay
It is unsatisfactory for supporting the transmission V2X professional qualifications;Second select unit, for when judged result is to be, selecting to prop up
Hold the transmission path of the V2X business.
Further, the transmission strategy includes at least one of:The signal that the measurement parameter of the transmission path is characterized
The tactful, RSU of transmission that quality is indicated is local/the default transmission strategy of operator, the transmission plan of system load balancing
Slightly, the transmission strategy of OBU requests.
Further, the measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding,
Measurement event.
By the present invention, obtained between RSU and board units OBU for indicating transmission vehicle using roadside unit RSU
The transmission strategy of the transmission path of networking V2X business, wherein, transmission path includes multiple transmission paths, multiple transmission
There are the priority orders of transmission, and then the RSU according to transmission strategy and the priority orders of transmission path between path
Select to support the transmission path of V2X business;I.e. can be according to the transmission path for instruction transmission car networking V2X business
Transmission strategy and transmission path priority orders select support V2X business transmission path, so as to solve correlation
Due to the movement of vehicle in technology, the variations of PC5/Uu interfaces, original transmission path are caused to be no longer appropriate for
V2X business, the problem for causing the transmission of V2X business to be obstructed, has reached the efficiency for improving transmission V2X business.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 be correlation technique in by network information platform to vehicle send traffic, schedule information schematic diagram;
Fig. 2 is the flow chart of the system of selection of car networking V2X service transmission path according to embodiments of the present invention;
Fig. 3 is the flow chart of the system of selection of car networking V2X service transmission path according to embodiments of the present invention;
Fig. 4 is the structured flowchart of the selecting device of car networking V2X service transmission path according to embodiments of the present invention;
Fig. 5 is the structured flowchart of the selecting device of car networking V2X service transmission path according to embodiments of the present invention;
Fig. 6 is the schematic diagram according to V2X transport mode translations in the covering of the base station of alternative embodiment of the present invention;
Fig. 7 is to move to LTE base station according to the OBU of alternative embodiment of the present invention to cover outer, V2X transport mode translations
Schematic diagram;
Fig. 8 is moved in covering from LTE base station covering is outer according to the OBU of alternative embodiment of the present invention, V2X transmission
Path integration schematic diagram;
Fig. 9 is that OBU according to embodiments of the present invention covers outer mobile in LTE base station, and the conversion of V2X transmission paths is illustrated
Figure;
Figure 10 is the flow chart of the method for the conversion V2X business sending modes according to alternative embodiment of the present invention 1;
Figure 11 is the flow chart of the method according to the optional conversion V2X business sending modes for implementing 2 of the present invention;
Figure 12 is the flow chart of the method for the conversion V2X business sending modes according to alternative embodiment of the present invention 3;
Figure 13 is the flow chart of the method for according to embodiments of the present invention 4 conversion V2X business sending modes;
Figure 14 is the flow chart of the method for according to embodiments of the present invention 5 conversion V2X business sending modes;
Figure 15 is the structured flowchart one of the device of the conversion V2X business sending modes according to alternative embodiment of the present invention;
Figure 16 is the structured flowchart two of the device of the conversion V2X business sending modes according to alternative embodiment of the present invention.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, " second "
Etc. being for distinguishing similar object, without for describing specific order or precedence.
A kind of system of selection of car networking V2X service transmission path is provided in the present embodiment, and Fig. 2 is according to this
The flow chart of the system of selection of the car networking V2X service transmission path of bright embodiment, as shown in Fig. 2 the flow process includes
Following steps:
Step S202:Roadside unit RSU is determined between RSU and board units OBU for indicating transmission car networking
The transmission strategy of the transmission path of V2X business, wherein, transmission path includes multiple transmission paths, multiple transmission paths it
Between have transmission priority orders;
Step S204:RSU selects to support the transmission of V2X business according to the priority orders of transmission strategy and transmission path
Path.
By above-mentioned steps S202 and step S204 of the present embodiment, using roadside unit RSU obtain RSU with it is vehicle-mounted
It is used for the transmission strategy of the transmission path of instruction transmission car networking V2X business between unit OBU, wherein, transmission path
Including multiple transmission paths, there are the priority orders of transmission, and then the RSU according to transmission between multiple transmission paths
The priority orders of strategy and transmission path select the transmission path for supporting V2X business;That is, in the present embodiment
In can according to for indicate transmission car networking V2X business transmission path transmission strategy and transmission path priority
Order selects the transmission path for supporting V2X business, so as to solve in correlation technique due to the movement of vehicle, causes
The variations of PC5/Uu interfaces, original transmission path are no longer appropriate for V2X business, cause V2X business to pass
The defeated problem being obstructed, has reached the efficiency for improving transmission V2X business.
It should be noted that the embodiment shown in Fig. 2 is illustrated from RSU sides, below in conjunction with the present embodiment
Optional embodiment the technical characteristic with RSU as subject is illustrated accordingly;
For the transmission path being related in the present embodiment can be:For transmitting the interface of V2X business, for transmitting
The relaying relay of V2X business, the adjacent cell for transmitting V2X business, wherein, for transmitting connecing for V2X business
Mouth includes:Uu interfaces, PC5 interfaces.
In the optional embodiment of the present embodiment, based on above-mentioned transmission path, it is currently in use between RSU and OBU
Transmission path when being Uu interfaces, the first priority orders of the transmission being related in the present embodiment order from high to low
For:Uu interfaces, adjacent cell, PC5 interfaces, relaying relay;And current transmission path is between RSU and OBU
During PC5 interfaces, the second priority orders of transmission order from high to low is:PC5 interfaces, Uu interfaces, relaying relay.
Phase is carried out in different application scenarios to the present embodiment with reference to the priority orders of above-mentioned transmission path and transmission
The explanation answered;
Application scenarios one:In OBU in RSU coverages, and the transmission path used between RSU and OBU is
During Uu interfaces, the RSU being related in the present embodiment step S204 is suitable according to the priority of transmission strategy and transmission path
Sequence selects the mode of the transmission path for supporting V2X business, can be implemented by:
Step S11:RSU judges to transmit whether strategy indicates that Uu interfaces are unsatisfactory for supporting the condition of transmission V2X business;
Step S12:When judged result is to be, RSU sends the first configured information to OBU, wherein, first indicates
Information is used to indicate to select to support the transmission path of V2X business according to the first priority orders.
Application scenarios two:In OBU in RSU coverages, and current transmission path is between RSU and OBU
During PC5 interfaces, the RSU being related in the present embodiment step S204 is suitable according to the priority of transmission strategy and transmission path
Sequence selects the mode of the transmission path for supporting V2X business, can be implemented by:
Step S21:RSU judges to transmit whether strategy indicates that PC5 interfaces are unsatisfactory for supporting the condition of transmission V2X business;
Step S22:When judged result is to be, RSU sends the second configured information to OBU, wherein, second indicates
Information is used to indicate to select to support the transmission path of V2X business according to the second priority orders.
Application scenarios three:Move in OBU is by RSU coverages extroversion coverage, and between RSU and OBU
When current transmission path is PC5 interfaces or relaying relay, the RSU being related in the present embodiment step S204 is according to biography
The priority orders of defeated strategy and transmission path select the mode of required transmission path, can be implemented by:
Step S31:RSU judges whether transmission strategy indicates that PC5 interfaces or Uu interfaces are unsatisfactory for supporting transmission V2X
The condition of business;
Step S32:When judged result is to be, RSU sends the 4th configured information to OBU, wherein, the 4th indicates
Information is used to indicate that OBU selects Uu interfaces to switch PC5 interfaces or relaying relay.
It should be noted that for the transmission strategy being related in the present embodiment includes at least one of:Transmission path
Transmission strategy that the signal quality that measurement parameter is characterized is indicated, RSU be local/the transmission plan of the default transmission path of operator
Slightly, the transmission strategy of the transmission path that the transmission strategy of the transmission path that system load balancing is indicated, OBU requests are indicated.
And S202 roadside units RSU is obtained between RSU and board units OBU for indicating the step of the present embodiment
Before the transmission strategy of the transmission path of transmission car networking V2X business, the method for the present embodiment also includes:RSU is to OBU
Measurement parameter is sent, wherein, measurement parameter is used for the signal quality for indicating OBU measurement PC5 interfaces and Uu interfaces.
Wherein, the measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding, measurement event.
Fig. 3 is the flow chart of the system of selection of car networking V2X service transmission path according to embodiments of the present invention, such as Fig. 3
It is shown, include the step of the method:
Step S302:Board units OBU is determined between RSU and board units OBU for indicating transmission car networking
The transmission strategy of the transmission path of V2X business, wherein, transmission path includes multiple transmission paths;
Step S304:OBU supports the transmission path of V2X business according to transmission policy selection.
From above-mentioned steps S302 and step S304, board units OBU obtain RSU and board units OBU it
Between for indicating the transmission strategy of the transmission path of transmission car networking V2X business, the OBU is according to transmission policy selection
Holding the transmission path of V2X business, i.e. OBU can be according to the transmission plan of the transmission path of transmission car networking V2X business
Slightly select to support the transmission path of V2X business, such that it is able to solve in correlation technique due to the movement of vehicle, cause
The variations of PC5/Uu interfaces, original transmission path are no longer appropriate for V2X business, cause V2X business to pass
The defeated problem being obstructed.
It should be noted that the embodiment shown in Fig. 3 is illustrated from OBU sides, will exist by subject of OBU below
Illustrated with reference to the optional embodiment of the present embodiment accordingly;
The transmission path being related in above-mentioned the present embodiment can be:For transmitting the PC5 interfaces of V2X business, being used for
The relaying relay of transmission V2X business.
Based on above-mentioned different transmission path, the step of with reference to the different application scene of the present embodiment to the present embodiment
S304 is described in detail;
Application scenarios one:OBU is moved outside RSU coverages, and current transmission path is between RSU and OBU
During relaying relay or PC5 interfaces, the OBU being related in the present embodiment step S304 is supported according to transmission policy selection
The mode in the transmission path footpath of V2X business, can be implemented by:
Step S41:OBU judges whether transmission strategy indicates that relaying relay or PC5 interfaces is unsatisfactory for supporting transmission V2X
The condition of business;
Step S42:When judged result is to be, OBU selects the transmission path for supporting V2X business.
Application scenarios two:Move to outside coverage from RSU coverages in OBU, and between RSU and OBU
When current transmission path is PC5 interfaces or relaying relay, the OBU being related in the present embodiment step S304 is according to biography
Defeated policy selection supports the mode of the transmission path of V2X business, can be implemented by:
Step S51:RSU judges whether transmission strategy indicates that PC5 interfaces or relaying relay are unsatisfactory for supporting transmission V2X
Professional qualification;
Step S52:When judged result is to be, OBU selects the transmission path for supporting V2X business.
It should be noted that the transmission strategy being related in the present embodiment includes at least one of:The measurement of transmission path
Transmission strategy that the signal quality of parameter characterization is indicated, RSU be local/and the default transmission strategy of operator, system load be equal
The transmission strategy of weighing apparatus, the transmission strategy of OBU requests.Wherein, measurement parameter includes that at least one of includes:Measurement
Object, measure the cycle, measurement thresholding, measurement event.
Through the above description of the embodiments, those skilled in the art is can be understood that according to above-described embodiment
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
There is the part that technology contributes embody in the form of software product, the computer software product is stored in one
In storage medium (such as ROM/RAM, magnetic disc, CD), use so that a station terminal equipment (can including some instructions
Being mobile phone, computer, server, or network equipment etc.) perform method described in each embodiment of the invention.
A kind of selecting device of car networking V2X service transmission path is additionally provided in the present embodiment, and the device is used for real
Existing above-described embodiment and preferred embodiment, had carried out repeating no more for explanation.As used below, term " mould
Block " can realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferably
Realized with software, but hardware, or the realization of the combination of software and hardware is also may and to be contemplated.
Fig. 4 is the structured flowchart of the selecting device of car networking V2X service transmission path according to embodiments of the present invention, should
Device is applied to roadside unit side, as shown in figure 4, the device includes:First determining module 42, for obtaining RSU
It is used for the transmission strategy of the transmission path of instruction transmission car networking V2X business between board units OBU, wherein, pass
Defeated path includes multiple transmission paths, the priority orders between multiple transmission paths with transmission;First choice module 44,
It is of coupled connections with the first determining module 42, for selecting to support according to the priority orders of transmission strategy and transmission path
The transmission path of V2X business.
Alternatively, the transmission path includes:For transmitting the interface of V2X business, the relaying for transmitting V2X business
Relay, the adjacent cell for transmitting V2X business, wherein, the interface for transmitting V2X business includes:Uu interfaces,
PC5 interfaces.
Alternatively, when the transmission path being currently in use between RSU and OBU is Uu interfaces, the first of transmission is preferential
Level order order from high to low is:Uu interfaces, adjacent cell, PC5 interfaces, relaying relay;In RSU and OBU
Between current transmission path when being PC5 interfaces, the second priority orders of transmission order from high to low is:PC5 interfaces,
Uu interfaces, relaying relay.
Alternatively, in OBU in RSU coverages, and the transmission path used between RSU and OBU is Uu
During interface, first choice module includes:First judging unit, for judging whether transmission strategy indicates that Uu interfaces are discontented with
Foot supports the condition of transmission V2X business;First transmitting element, for when judged result is to be, sending the to OBU
One configured information, wherein, the first configured information is used to indicate to select to support V2X business according to the first priority orders
Transmission path.
And in OBU in RSU coverages, and when between RSU and OBU, current transmission path is PC5 interfaces,
First choice module includes:Second judging unit, for judging whether transmission strategy indicates that PC5 interfaces are unsatisfactory for supporting to pass
The condition of defeated V2X business;Second transmitting element, for when judged result is to be, sending second to OBU and indicating letter
Breath, wherein, the second configured information is used to indicate to select to support the transmission path of V2X business according to the second priority orders.
Alternatively, move in OBU is by RSU coverages extroversion coverage, and it is current between RSU and OBU
When transmission path is PC5 interfaces or relaying relay, first choice module includes:3rd judging unit, for judging to pass
Whether defeated strategy indicates that PC5 interfaces or Uu interfaces are unsatisfactory for supporting the condition of transmission V2X business;3rd transmitting element,
For when judged result is to be, sending the 4th configured information to OBU, wherein, the 4th configured information is used to indicate OBU
Select Uu interfaces to switch PC5 interfaces or relaying relay.
The transmission strategy being related in the present embodiment includes at least one of:The signal that the measurement parameter of transmission path is characterized
Transmission strategy that quality is indicated, RSU be local/and the transmission strategy of the default transmission path of operator, system load balancing refer to
The transmission strategy of the transmission path that the transmission strategy of the transmission path shown, OBU requests are indicated.
Obtain between RSU and board units OBU for indicating transmission car networking V2X business in roadside unit RSU
Before the transmission strategy of transmission path, device also includes:Sending module, for sending measurement parameter to OBU, wherein,
Measurement parameter is used for the signal quality for indicating OBU measurement PC5 interfaces and Uu interfaces.
Alternatively, measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding, measurement
Event.
Fig. 5 is the structured flowchart of the selecting device of car networking V2X service transmission path according to embodiments of the present invention, should
Device is applied to board units OBU sides, as shown in figure 5, the device includes:Second determining module 52, for determining
It is used for the transmission strategy of the transmission path of instruction transmission car networking V2X business between RSU and board units OBU, wherein,
Transmission path includes multiple transmission paths;Second selecting module 54, is of coupled connections with the second determining module 52, for according to
The transmission path of V2X business is supported according to transmission policy selection.
Alternatively, transmission path includes:For transmitting the PC5 interfaces of V2X business, for transmitting in V2X business
After relay.
Based on above-mentioned transmission path, OBU is moved outside RSU coverages, and current transmission between RSU and OBU
To relay during relay or PC5 interfaces, the second selecting module includes in path:4th judging unit, for judging transmission plan
Slightly whether indicate that relaying relay or PC5 interfaces is unsatisfactory for supporting the condition of transmission V2X business;First choice unit, uses
In when judged result is to be, the transmission path of support V2X business is selected.
And, move to outside coverage from RSU coverages in OBU, and current transmission between RSU and OBU
When path is PC5 interfaces or relaying relay, the second selecting module includes:4th judging unit, for judging transmission plan
Slightly whether indicate that PC5 interfaces or relaying relay are unsatisfactory for supporting transmission V2X professional qualifications;Second select unit, is used for
When judged result is to be, select to support the transmission path of V2X business.
Alternatively, transmitting strategy includes at least one of:What the signal quality that the measurement parameter of transmission path is characterized was indicated
Transmission strategy, RSU be local/the default transmission strategy of operator, the transmission strategy of system load balancing, OBU requests
Transmission strategy.
Alternatively, measurement parameter includes that at least one of includes:Measurement object, measure the cycle, measurement thresholding, measurement
Event.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong
Cross in the following manner realization, but not limited to this:Above-mentioned module is respectively positioned in same processor;Or, above-mentioned module distinguishes position
In multiple processors.
The present invention is illustrated with reference to alternative embodiment of the present invention;
This alternative embodiment provides a kind of method of conversion V2X business sending modes, and the method includes:Base station eNB
Send car networking V2X measurement of correlation parameter, board units OBU measurement V2X service transmission path PC5 interfaces or Uu
The signal quality of interface, in base station covers, to eNB report measurement results, eNB determines the V2X of OBU to OBU
Service transmission path;Or, covering outer in base station, OBU selects V2X service transmission paths according to measurement result.
With reference to the concrete application scene of the present invention, alternative embodiment of the present invention is illustrated;
Application scenarios 1:In base station covers, V2X transport mode translations;
1.1)Uu->PC5
Fig. 6 be according to the base station of alternative embodiment of the present invention cover in V2X transport mode translations schematic diagram, such as Fig. 6
Shown, OBU1 and OBU2 carries out V2X communications by Uu mouths, and V2X includes:V2V, V2I, the V2P. scene
Under have two kinds of possible use-cases:
1.1.1) the conversion based on measurement:Uu->PC5, Uu->relay
ENB arranges the measurement configuration of Uu mouths V2X communications, and measurement configuration at least includes:Which measurement object, that is, measures
The corresponding Uu mouths of eNB, further comprise:Measurement thresholding, measure the cycle, measurement event etc..Measurement thresholding is referred to
OBU measurements report eNB, measure the cycle to be used for periodic measurement when meeting thresholding, measurement event is used for event triggering and surveys
Amount.OBU1 and OBU2 measure the signal quality of Uu mouths, such as Reference Signal Received Power (Reference Signal respectively
Received Power, referred to as RSRP), Reference Signal Received Quality (Reference Signal Received Quality,
Referred to as RSRQ), the intensity of reference signal indicates (Reference Signal Strength Indicator, referred to as RSSI)
Etc. data, when measurement configuration is met, such as signal quality drops to measurement thresholding, OBU report measurement results to eNB,
ENB determines that Uu mouths are not suitable for continuing transmission V2X business and/or can not realize V2X business by cell switching, then eNB
Indicate to open PC5 interfaces (there may be straight-through or relay) to OBU (receiving-transmitting sides), if PC5 interface qualities can
To meet V2X business demands, then V2X business is sent by PC5 between OBU.If PC5 mass can not expire
Sufficient V2X business demands, then OBU find/select that relay proceeds V2X business, relay is the Relay in D2D,
If OBU have selected relay, need to send request/configured information to eNB, after receiving the confirmation of eNB transmissions,
OBU proceeds V2X business by relay.
1.1.2) the conversion that eNB is initiated:
ENB refers to that the eNB for carrying out V2X communications, eNB determine that ongoing Uu mouths V2X service neededs are transformed into
PC5 interfaces, the reason for possible be:Load balancing, i.e. eNB judge the Uu mouths overload of itself and can not pass through to cut
Adjacent cell alleviation is changed to, in order to not affect common LTE business, needs that a part of V2X business is transferred to PC5 interfaces.
ENB sends configured information to the OBU of receiving-transmitting sides:V2X business is transformed into into PC5.OBU passes through PC5 interfaces
Continue V2X business.If PC5 interfaces can not meet the demand of V2X business, OBU sends configured information to eNB,
And continue the behavior of next step according to the response message of eNB, such as eNB can select to switch V2X business to adjacent cell or
Relay is selected to carry out V2X communications etc..
Above-mentioned eNB sends the configured information for being transformed into PC5 by RRC signaling to OBU.
1.2)Uu->relay
Uu->Relay. be that eNB judges V2X communications can not be directly carried out by Uu or PC5, but eNB determinations can be with
V2X communications are carried out using relay, then eNB sends configured information to OBU by RRC signaling, and OBU is according to finger
Show that discovery/selection relay carries out V2X communications.
1.3)PC5->Uu
Note:The measurement of this scene to as if PC5 interfaces, eNB carries out the measurement of PC5 interfaces and configures and notify OBU,
OBU is measured and is reported to PC5 interfaces according to measurement configuration.The measurement signal of PC5 interfaces can be included following
At least one:RSRP, RSRQ, RSSI.
Recipient OBU detects PC5 Quality Downs to thresholding, and report measurement results to eNB, eNB determine employing
Uu continues V2X communications, and eNB indicates that OBU both sides set up RRC connections, continues V2X business by eNB.
If former be in RRC-Idle states by the OBU that PC5 communicates, OBU initially sets up RRC connections,
Into RRC-Connected states, then send measurement report or carry out V2X business.
1.4)PC5->relay
The signal quality of OBU measurement PC5 interfaces simultaneously reports eNB, and eNB determines directly enter by Uu or PC5
Row V2X communicates, but eNB determines and can carry out V2X communications using relay, then eNB passes through RRC signaling to OBU
Configured information is sent, according to instruction, OBU has found/select that relay carries out V2X communications.
1.5)relay->relay
OBU carries out V2X communications by relay, and OBU measures the PC5 interface signal qualities of relay and reports eNB,
ENB determines can only carry out V2X communications by selecting new relay, then eNB is sent to OBU by RRC signaling
According to instruction, configured information, OBU find/select that new relay carries out V2X communications.
1.6)relay->PC5
V2X communications are carried out by relay between OBU, OBU measures the PC5 interface signal qualities of relay and reports
ENB, eNB determine can carry out V2X communications by direct PC5 interfaces, then eNB passes through RRC signaling to OBU
Configured information is sent, OBU directly carries out V2X communication by PC5 interfaces according to instruction.
1.7)relay->Uu
V2X communications are carried out by relay between OBU, OBU measures the PC5 interface signal qualities of relay and reports
ENB, eNB determine can carry out V2X communications by Uu interfaces, then eNB is sent to OBU by RRC signaling and referred to
Show information, OBU carries out V2X communication by Uu interfaces according to instruction.
Application scenarios 2:OBU moves to LTE base station and covers outer, V2X transport mode translations;
2.1)PC5->relay
Fig. 7 is to move to LTE base station according to the OBU of alternative embodiment of the present invention to cover outer, V2X transport mode translations
Schematic diagram, as shown in fig. 7, OBU carries out V2X communications using PC5 in LTE is covered, OBU leaves LTE and covers
Lid, detects PC5 Quality Downs to thresholding, needs to find/select relay to continue V2X business, if no relay,
Then service disconnection;The cell edge in the eNB, if PC5 mass is less than thresholding, OBU report measurement results to eNB,
ENB has found to use Uu (Uu mass is also below thresholding), eNB to indicate that OBU has found/select that relay continues V2X
Business.
2.3)Uu->PC5
OBU carries out V2X communications using Uu in LTE is covered, and OBU is moved to and entered using PC5 outside LTE coverings
Row V2X communicates.
2.4)Uu->relay
OBU covers outer selection relay in LTE and carries out V2X communications.
2.5)relay->PC5
OBU carries out V2X communications using relay in LTE is covered, and OBU leaves LTE coverings, detects relay
PC5 interface qualities decline, and PC5 signal qualitys between OBU rise, and OBU passes through direct PC5 interfaces
Carry out V2X communications.
2.6)relay->relay
OBU carries out V2X communications using relay in LTE is covered, and OBU leaves LTE coverings, detects relay
PC5 interface qualities decline, and the PC5 signal qualitys between OBU are also poor, and OBU is by having found/selecting new
Relay carries out V2X communications.
It is to be noted that:The OBU for leaving LTE coverings in scene 2 includes at least one of:Sender OBU,
Recipient OBU, or receiving-transmitting sides OBU.
Application scenarios 3:OBU covers outer moving to from LTE base station and covers interior, the conversion of V2X transmission paths
3.1)PC5->Uu
Fig. 8 is moved in covering from LTE base station covering is outer according to the OBU of alternative embodiment of the present invention, V2X transmission
Path integration schematic diagram, as shown in figure 8, OBU covers interior OOC- from outer entrance is covered>IC, OBU (cover outer)
V2X communications are carried out by PC5, OBU is covered into LTE, OBU sends measurement result to eNB, eNB determines
Communicated by Uu, eNB sends configured information to OBU by RRC signaling, then OBU is set up with eNB and is connected,
And V2X communications are continued by Uu.
Now, the both sides OBU of communication enters LTE and covers interior.
3.2)relay->PC5
OBU covers interior OOC- from outer entrance is covered>IC, OBU (covering outer) carry out V2X communications by relay,
OBU is covered into LTE, and OBU sends measurement result to eNB, and eNB is determined and can be communicated by PC5, then OBU
V2X communications are continued by PC5.
3.3)relay->Uu.
OBU covers interior OOC- from outer entrance is covered>IC, OBU (covering outer) carry out V2X communications by relay,
OBU is covered into LTE, and OBU sends measurement result to eNB, and eNB determines that by Uu communications eNB passes through
RRC signaling sends configured information to OBU, then OBU is set up with eNB and is connected, and continues V2X communications by Uu.
3.4)relay->relay
OBU covers interior OOC- from outer entrance is covered>IC, OBU (covering outer) carry out V2X communications by relay,
OBU is covered into LTE, and OBU sends measurement result to eNB, and eNB determines to be needed to select new relay communications,
ENB sends configured information to OBU by RRC signaling, then OBU has found/select new relay, and passes through relay
Continue V2X communications.
3.5)PC5->relay
OBU covers interior OOC- from outer entrance is covered>IC, OBU (covering outer) carry out V2X communications by PC5,
OBU is covered into LTE, and OBU sends measurement result to eNB, and eNB determines to be needed to select relay communications, eNB
Configured information is sent to OBU by RRC signaling, then OBU has found/select relay, and continues V2X by relay
Communication.
It is to be noted that:The OBU in entrance LTE coverings in scene 3 includes at least one of:Sender
OBU, recipient OBU, or receiving-transmitting sides OBU.
Scene 4:OBU covers outer mobile in LTE base station, the conversion of V2X transmission paths
4.1)PC5->relay
Fig. 9 is that OBU according to embodiments of the present invention covers outer mobile in LTE base station, and the conversion of V2X transmission paths is illustrated
Figure, as shown in figure 9, OBU carries out V2X communications by PC5 outside LTE is covered, OBU detects PC5 signals
Quality Down finds/selects relay to thresholding, then OBU, and continues V2X communications by relay.
4.2)relay->relay
OBU carries out V2X communications by relay outside LTE is covered, and OBU detects the signal quality of relay and declines
PC5 interface signal qualities to thresholding and between OBU are unsatisfactory for V2X communication requirements, then OBU has found/select new
Relay, and V2X communications are continued by relay.
4.3)relay->PC5
OBU carries out V2X communications by relay outside LTE is covered, and OBU detects the signal quality of relay and declines
PC5 interface signal qualities to thresholding and between OBU meet V2X communication requirements, then OBU is directly entered by PC5
Row V2X communicates.
Board units OBU equivalent to user equipment (UE) or vehicle mobile terminals,
Base station sends configured information and passes through system broadcast message or special RRC message transmission;System broadcast message can be
Existing SIB message increases respective field or aims at the newly-increased SIB message of V2X;
OBU includes following at least one to base station reporting information:Receiving or reception interested V2X service identifications,
OBU abilities, measurement report;Wherein:OBU abilities include following at least one:Carrier aggregation CA ability, MBMS
Ability, DSRC abilities, dual link DC ability, the ability that LTE and DSRC is received simultaneously;OBU is reported and is passed through
RRC signaling or L1/2 layers signaling are realized;Report condition for it is following any one:OBU is periodically reported, event triggering
Report, or eNB request OBU are reported.
It is described in detail with reference to the specific embodiment of alternative embodiment of the present invention;
Embodiment 1:In LTE is covered, V2X business is transformed into PC5 interfaces from Uu
Figure 10 is the flow chart of the method for the conversion V2X business sending modes according to alternative embodiment of the present invention 1, is such as schemed
Shown in 10, include the step of the method:
Step S1001, base station broadcast measurement parameter;
Wherein, measurement parameter includes:The measurement parameter of Uu mouths and PC5 interfaces, measurement parameter at least include measurement object,
Further comprise at least one of:Measure the cycle, measures thresholding, measurement event.
Step S1002, OBU measurement Uu mouths signal qualitys are simultaneously reported.
Wherein, OBU carries out V2X communications by Uu mouths, and OBU measures Uu mouths according to the measurement parameter of base station
Signal quality, OBU pass through ascending control channel or shared channel report measurement results to base station.Report and believed using L1/2
Order or RRC signaling, wherein L1/2 signalings refer to physical layer/MAC layer signaling.
Report and further comprise:V2X service identifications, OBU abilities;
Step S1003, base station judge whether to continue through Uu communications, if it is, step S1004 is turned to, otherwise,
Turn to step S1005;
Wherein, base station is according to measurement result and/or the loading condition of base station, it is determined whether continue through Uu port communications,
As Uu messages number second-rate (being not suitable for V2X communications), or Uu mouths quality preferably (are adapted to V2X communications) but eNB
Local heavier loads (being not suitable for V2X communications or common LTE service communications), base station all can determine that no longer logical by Uu
Letter.Uu communications are referred to and are communicated by the V2X of Uu mouths.
Step S1004, OBU continue through Uu communications.
Step S1005, base station judge whether to be switched to adjacent cell communication, if it is, step S1006 is turned to, otherwise,
Turn to step S1007.
Wherein, base station determines cannot carry out V2X communications by Uu, and base station determines whether switching by switching flow
OBU carries out V2X communications to adjacent cell.With adjacent eNB Signalling exchanges, base station is by determining whether that switching OBU arrives
Adjacent cell.
Step S1006, base station switch OBU and communicate to adjacent cell.
Wherein, OBU includes at least one of:Sender OBU, recipient OBU or receiving-transmitting sides OBU.This
In assume adjacent cell belong to different base stations, if belonging to identical base station, step S1004 can be concluded.
Step S1007, base station judge whether to be transformed into PC5 communications, if it is, turning to step S1008, otherwise, turn
To step S1010.
Wherein, base station determination can not pass through Uu mouths or be switched to adjacent cell to continue V2X communications, then base station is according to OBU
The distance between/whether the comprehensive descision such as the ability/V2X types of service of OBU be transformed into PC5 communications, such as between OBU
Distance meets PC5 communicating requirements, and OBU supports that PC5 communications, and V2X business can be transmitted by PC5, then
Base station determines that can be switched to PC5 carries out V2X communications, and otherwise base station determines can not carry out V2X communications by PC5.
Step S1008, eNB send conversion configured information to OBU.
Wherein, eNB sends conversion configured information by RRC signaling, and conversion configured information at least includes:PC5 interfaces
Mark, further comprises at least one of:PC5 interface frequencies, PC5 interface resources pond.
Step S1009, OBU are transformed into PC5 communications.
Wherein, OBU receives the configured information of base station, carries out V2X by PC5 interfaces according to configured information OBU and leads to
Letter.
Step S1010, eNB send configured information to OBU.
OBU directly can not be communicated by PC5, such as OBU both sides it is distant/OBU do not support PC5 communications/V2X
Business does not support PC5 transmission etc., then eNB sends configured information to OBU, and configured information at least includes:Can not pass through
PC5 communicates, and can also further include:Relay is selected to carry out V2X communications.
Step S1011, OBU receive configured information.
Wherein, OBU can select relay to be communicated.Relay is the relay for supporting D2D, including:UE-to-UE
Relay, or UE-to-NW relay.relay can notify OBU by eNB by step 110, or OBU has found/selects
Relay, and eNB is notified, then eNB confirms to carry out V2X communications by Relay after OBU is elected.
If OBU does not have found that suitable relay, OBU are reported to base station, V2X service disconnections.
Embodiment 2:In LTE is covered, V2X business is transformed into Uu interfaces from PC5
Figure 11 be according to the present invention it is optional implement 2 conversion V2X business sending modes method flow chart, such as Figure 11
It is shown, include the step of the method:
Step S1101, base station broadcast measurement parameter.
Step S1102, OBU measurement PC5 mouths signal qualitys are simultaneously reported.
Step S1103, base station judge whether to continue through PC5 communications, if it is, step S1104 is turned to, otherwise,
Turn to step S1105.
Wherein, the local loading condition of signal quality of the base station according to PC5 mouths, and/or eNB determines whether that continuing PC5 leads to
Letter, such as PC5 interface signal qualities poor (being not suitable for V2X communications), or PC5 interface qualities are preferable but eNB is loaded
Relatively light and Uu mouths signal quality preferably (is adapted to V2X communications), then base station to can determine that and carry out V2X communications by Uu mouths.
Step S1104, OBU are communicated by PC5.
Step S1105, base station judge whether to be transformed into Uu, if it is, turning to step S1106, otherwise, turn to step
S1108。
Wherein, base station determines that PC5 is not suitable for carrying out V2X communications, base station according to Uu mouth signal qualitys, OBU abilities,
V2X business demands etc. determine whether to send V2X business by Uu, and such as Uu signal qualitys are preferable, and OBU is supported
Uu port transmissions, and V2X business support Uu port transmissions, and Uu mouth light loads, then base station determination can be switched to Uu
Mouthful, otherwise base station determination can not be transformed into Uu mouths.The signal quality of the Uu mouths can be measured by OBU and report acquisition.
Step S1106, eNB send conversion configured information to OBU.
Wherein, eNB sends conversion configured information by RRC signaling, and conversion configured information at least includes:Uu interface marks
Know, further comprise at least one of:Uu interface frequencies, Uu interface resources.
Step S1107, OBU are transformed into Uu communications.
Wherein, OBU sets up RRC with base station and is connected and carries out V2X communications by Uu.
Step S1108, base station send configured information to OBU.
Wherein, base station determines and can not continue V2X communications by PC5 or Uu mouths, and base station is sent by RRC signaling and referred to
Show information, configured information at least includes:Uu or PC5 can not be passed through to communicate, can also further be included:Select Relay
Carry out V2X communications.
Step S1109, OBU receive configured information.
Wherein, this step is identical with step S1011, repeats no more here.
Embodiment 3:OBU from LTE cover in outer
Figure 12 is the flow chart of the method for the conversion V2X business sending modes according to alternative embodiment of the present invention 3, is such as schemed
Shown in 12, include the step of the method:
Step S1201, base station broadcast measurement parameter.
Step S1202, OBU leave LTE coverings.
Wherein, OBU receives measurement parameter in LTE is covered and preserves.OBU carries out V2X by PC5 and leads to
Letter, OBU is according to PC5 messages Quality Down and/or cannot obtain system broadcast message etc. and judges already out LTE covering.
OBU includes at least one of:Sender OBU, recipient OBU, or receiving-transmitting sides OBU.
Step S1203, OBU judge whether to continue through PC5 communications, if it is, step S1204 is turned to, otherwise,
Turn to step S1205.
Wherein, OBU measurements PC5 signal qualitys, and determine whether PC5 signal strength signal intensities meet V2X communication requirements.
Step S1204, OBU are communicated by PC5.
Step S1205, OBU judge whether to be transformed into relay, if it is, turning to step 306, otherwise, turn to step
307。
Wherein, OBU determines that PC5 can not meet V2X communication requirements, and, according to OBU abilities, V2X business will for OBU
Ask, relay configured informations etc. judge whether to be transformed into relay, such as:OBU supports relay communications, and V2X business can
By Relay, and relay supports V2X business, then OBU determinations can be switched to relay.
Step S1206, OBU select relay to continue communication.
Step S1207, V2X communication disruptions.
Wherein, OBU cannot select relay to communicate, and cannot be communicated by PC5, then V2X service disconnections.
Embodiment 4OBU covers outer to interior from LTE;
Figure 13 is the flow chart of the method for according to embodiments of the present invention 4 conversion V2X business sending modes, such as Figure 13
It is shown, include the step of the method:
Step S1301, OBU are covered into LTE.
Wherein, OBU carries out V2X communications by PC5 or relay outside LTE is covered.OBU include it is following at least it
One:Sender OBU, recipient OBU, or receiving-transmitting sides OBU.
Step S1302, the signal quality of OBU measurement PC5 simultaneously report eNB.
Wherein, PC5 includes:PC5 between receiving-transmitting sides, or the PC5 between OBU and relay.
Step S1303, eNB judge whether to continue through original PC5 communications, if it is, step S1304 is turned to, it is no
Then, turn to step S1305.
Wherein, original PC5 includes:PC5 between receiving-transmitting sides, or the PC5 between OBU and relay.
Step S1304, OBU are communicated by PC5.
Whether step S1305, eNB judge whether by Uu port communications, if it is, turning to step 406, otherwise turn
To step S1307.
Step S1306, OBU carry out V2X communications by Uu mouths.
OBU sets up RRC with base station and is connected, and carries out V2X communications.
Step S1307, eNB judge whether to communicate by new PC5, if it is, step S1308 is turned to, otherwise,
Turn to step S1309.
Wherein, new PC5 includes:PC5 between receiving-transmitting sides, or the PC5 between OBU and relay.If
Original PC5 is:PC5 between receiving-transmitting sides, then new PC5 be:PC5 between OBU and relay, Huo Zheru
Really original PC5 is:PC5 between OBU and relay, then new PC5 be:PC5 between receiving-transmitting sides or
PC5 between OBU and new relay.
Step S1308, OBU continue V2X communications by new PC5.
Step S1309, base station send configured information.
Base station indicates that OBU can not be by new PC5 direction communications, and further base station indicates that OBU selects new relay
Communication.
Step S1310, V2X communication disruptions.
Wherein, OBU indicates to determine V2X communication disruptions according to base station.
Embodiment 5:OBU covers outer mobile in LTE
Figure 14 is the flow chart of the method for according to embodiments of the present invention 5 conversion V2X business sending modes, such as Figure 14
It is shown, include the step of the method:
Whether step S1401, OBU carry out V2X communications by relay, if it is, step S1402 is turned to, otherwise
Turn to step S1410;
Step S1402, OBU measure relay signal qualitys.
Step S1403, if continuing original relay carries out V2X communications, if it is, turning to step S1404, otherwise turns
To step S1405;
Step S1404, OBU continues original relay carries out V2X communications.
Step S1405, if directly PC5 carries out V2X communications, if it is, turning to step S1406, otherwise turns to
Step S1407;
Step S1406, OBU carry out V2X communications by PC5.
Step S1407, if select new relay to carry out V2X communications, if it is, step S1408 is turned to, otherwise
Turn to step S1409;
Step S1408, OBU select new relay to carry out V2X communications.
Step S1409, V2X communication disruptions.
Step S1410, OBU measurement PC5 signal qualitys.
Step S1411, if continue PC5 communications, if it is, turning to step S1412, otherwise turns to step S1413;
Step S1412, OBU continue PC5 communications.
Step S1413, if need relay to carry out V2X communications, if it is, turning to step S1408, otherwise turns to
Step S1409.
Figure 15 is the structured flowchart one of the device of the conversion V2X business sending modes according to alternative embodiment of the present invention, such as
Shown in Figure 15, the device includes:
First receiver 1502, for receiving the reporting information of OBU transmissions, is additionally operable to receive phase by inter-base station interface
The handover relevant information of adjacent base station;
First transmitter 1504, for sending measurement parameter to OBU, V2X sending modes select relay to indicate letter
Breath;
First processor 1506, for analysing whether to change V2X sending modes and determining the sending mode of V2X.
Said apparatus include that for LTE RSU or DSRC RSU or LTE base station wherein LTE RSU include:
Base station eNB or static UE. in E-UTRAN
Figure 16 is the structured flowchart two of the device of the conversion V2X business sending modes according to alternative embodiment of the present invention, such as
Shown in Figure 16, include the step of the method:
Second receiver 1602, for receiving the measurement parameter and V2X sending mode configured informations of base station transmission, also uses
In the handover request for receiving base station;
Second transmitter 1604, for base station report measurement results and mode switch request;
Second processing device 1606, for measurement signal quality, selects relay or sending mode.
Said apparatus are included for LTE OBU or DSRC OBU or LTE user equipment (UE)s, wherein LTE RSU bags
Include:User equipment (UE) or mobile terminal in E-UTRAN.
From the invention described above alternative embodiment, can realize that LTE car networkings V2X business is connect in Uu mouths and PC5
Patten transformation between mouthful, ensures the demand of LTE V2X business continuances.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can
It is used for the program code for performing following steps to be arranged to store:
S1, roadside unit RSU are obtained between RSU and board units OBU for indicating transmission car networking V2X business
Transmission path transmission strategy, wherein, transmission path includes multiple transmission paths, between multiple transmission paths have pass
Defeated priority orders;
S2, RSU select to support the transmission path of V2X business according to the priority orders of transmission strategy and transmission path.
Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment
Example, the present embodiment will not be described here.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned present invention can be with general
Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they
Storage in the storage device by computing device performing, and in some cases, can be holding different from order herein
The shown or described step of row, or they are fabricated to each integrated circuit modules respectively, or will be many in them
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combine with software.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the technology of this area
For personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made it is any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (30)
1. a kind of system of selection of car networking V2X service transmission path, it is characterised in that include:
Roadside unit RSU is determined between the RSU and board units OBU for indicating transmission car networking V2X industry
The transmission strategy of the transmission path of business, wherein, the transmission path includes multiple transmission paths, multiple transmission paths
Between have transmission priority orders;
The RSU selects to support the V2X according to the priority orders of the tactful and described transmission path of the transmission
The transmission path of business.
2. method according to claim 1, it is characterised in that the transmission path includes:For transmitting the V2X
The interface of business, the relaying relay for transmitting the V2X business, for transmitting the adjacent little of the V2X business
Area, wherein, the interface for transmitting the V2X business includes:Uu interfaces, PC5 interfaces.
3. method according to claim 2, it is characterised in that be currently in use between the RSU and the OBU
Transmission path when being the Uu interfaces, the first priority orders of transmission order from high to low is:The Uu
Interface, the adjacent cell, the PC5 interfaces, the relaying relay;Between the RSU and the OBU
When current transmission path is the PC5 interfaces, the second priority orders of transmission order from high to low is:It is described
PC5 interfaces, the Uu interfaces, the relaying relay.
4. method according to claim 3, it is characterised in that in the OBU in the RSU coverages,
And the transmission path used between the RSU and the OBU, when being the Uu interfaces, the RSU is according to institute
The transmission path for stating the priority orders selection support V2X business for transmitting tactful and described transmission path includes:
The RSU judges whether the transmission strategy indicates that the Uu interfaces are unsatisfactory for supporting the transmission V2X industry
The condition of business;
When judged result is to be, the RSU sends the first configured information to the OBU, wherein, described the
One configured information is used to indicate to select to support the transmission path of the V2X business according to first priority orders.
5. method according to claim 3, it is characterised in that in the OBU in the RSU coverages,
And when between the RSU and the OBU, current transmission path is the PC5 interfaces, the RSU is according to described
The priority orders of the tactful and described transmission path of transmission select to support that the transmission path of the V2X business includes:
The RSU judges whether the transmission strategy indicates that the PC5 interfaces are unsatisfactory for supporting the transmission V2X
The condition of business;
When judged result is to be, the RSU sends the second configured information to the OBU, wherein, described the
Two configured informations are used to indicate to select to support the transmission path of the V2X business according to second priority orders.
6. method according to claim 3, it is characterised in that export-oriented by the RSU coverages in the OBU
Move in coverage, and current transmission path is the PC5 interfaces or institute between the RSU and the OBU
When stating relaying relay, the RSU selects institute according to the priority orders of the tactful and described transmission path of the transmission
The transmission path for needing includes:
The RSU judges whether the transmission strategy indicates that the PC5 interfaces or the Uu interfaces are unsatisfactory for supporting
Transmit the condition of the V2X business;
When judged result is to be, the RSU sends the 4th configured information to the OBU, wherein, described the
Four configured informations are used to indicate that the OBU selects the Uu interfaces to switch the PC5 interfaces or the relaying
relay。
7. the method according to any one of claim 1 to 6, it is characterised in that the transmission strategy include it is following at least
One of:Transmission that the signal quality that the measurement parameter of the transmission path is characterized is indicated is tactful, the RSU it is local/
The transmission of the transmission path that the transmission strategy of the default transmission path of operator, system load balancing are indicated is tactful, described
The transmission strategy of the transmission path that OBU requests are indicated.
8. method according to claim 7, it is characterised in that obtain the RSU and vehicle-mounted list in roadside unit RSU
Before the transmission strategy of the transmission path for being used for instruction transmission car networking V2X business between first OBU, methods described
Also include:
The RSU sends the measurement parameter to OBU, wherein, the measurement parameter is used to indicate that OBU is measured
The signal quality of the PC5 interfaces and Uu interfaces.
9. the method according to claim 7, it is characterised in that the measurement parameter includes that at least one of includes:
Measurement object, measure the cycle, measurement thresholding, measurement event.
10. a kind of system of selection of car networking V2X service transmission path, it is characterised in that include:
Board units OBU is determined between roadside unit RSU and the OBU for indicating transmission car networking V2X industry
The transmission strategy of the transmission path of business, wherein, the transmission path includes multiple transmission paths;
The OBU supports the transmission path of the V2X business according to the transmission policy selection.
11. methods according to claim 10, it is characterised in that the transmission path includes:For transmitting the V2X
The PC5 interfaces of business, the relaying relay for transmitting the V2X business.
12. methods according to claim 11, it is characterised in that the OBU is moved outside the RSU coverages,
And when between the RSU and the OBU, current transmission path is the relaying relay or described PC5 interfaces, institute
State OBU and support that the transmission path footpath of the V2X business includes according to the transmission policy selection:
The OBU judges whether the transmission strategy indicates that the relaying relay or described PC5 interfaces are unsatisfactory for propping up
Hold the condition for transmitting the V2X business;
When judged result is to be, the OBU selects the transmission path for supporting the V2X business.
13. methods according to claim 12, it is characterised in that the OBU from the RSU coverages to
Move outside coverage, and current transmission path is the PC5 interfaces or institute between the RSU and the OBU
When stating relaying relay, the OBU supports the transmission path bag of the V2X business according to the transmission policy selection
Include:
The RSU judges whether the transmission strategy indicates that the PC5 interfaces or the relaying relay are unsatisfactory for propping up
Hold the transmission V2X professional qualifications;
When judged result is to be, the OBU selects the transmission path for supporting the V2X business.
14. methods according to any one of claim 10 to 13, it is characterised in that the transmission strategy include with down to
It is one of few:Transmission that the signal quality that the measurement parameter of the transmission path is characterized is indicated is tactful, the RSU is local
The transmission strategy for transmitting tactful, described OBU requests of the default transmission strategy of/operator, system load balancing.
15. methods according to claim 14, it is characterised in that the measurement parameter includes at least one of bag
Include:Measurement object, measure the cycle, measurement thresholding, measurement event.
A kind of 16. selecting devices of car networking V2X service transmission path, are applied to roadside unit RSU sides, it is characterised in that
Including:
First determining module, for determining between roadside unit RSU and board units OBU for indicating transmission vehicle
The transmission strategy of the transmission path of networking V2X business, wherein, the transmission path includes multiple transmission paths, many
There are between individual transmission path the priority orders of transmission;
First choice module, for selecting to support according to the priority orders of the tactful and described transmission path of the transmission
The transmission path of the V2X business.
17. devices according to claim 16, it is characterised in that the transmission path includes:For transmitting the V2X
The interface of business, the relaying relay for transmitting the V2X business, for transmitting the adjacent little of the V2X business
Area, wherein, the interface for transmitting the V2X business includes:Uu interfaces, PC5 interfaces.
18. devices according to claim 17, it is characterised in that be currently in use between the RSU and the OBU
Transmission path when being the Uu interfaces, the first priority orders of transmission order from high to low is:The Uu
Interface, the adjacent cell, the PC5 interfaces, the relaying relay;Between the RSU and the OBU
When current transmission path is the PC5 interfaces, the second priority orders of transmission order from high to low is:It is described
PC5 interfaces, the Uu interfaces, the relaying relay.
19. devices according to claim 18, it is characterised in that in the OBU in the RSU coverages,
And the transmission path used between the RSU and the OBU be the Uu interfaces when, the first choice module
Including:
First judging unit, for judging whether the transmission strategy indicates that the Uu interfaces are unsatisfactory for supporting transmission
The condition of the V2X business;
First transmitting element, for when judged result is to be, sending the first configured information to the OBU, its
In, first configured information is used to indicate to select to support the V2X business according to first priority orders
Transmission path.
20. devices according to claim 18, it is characterised in that in the OBU in the RSU coverages,
And when between the RSU and the OBU, current transmission path is the PC5 interfaces, the first choice module
Including:
Second judging unit, for judging whether the transmission strategy indicates that the PC5 interfaces are unsatisfactory for supporting transmission
The condition of the V2X business;
Second transmitting element, for when judged result is to be, sending the second configured information to the OBU, its
In, second configured information is used to indicate to select to support the V2X business according to second priority orders
Transmission path.
21. devices according to claim 18, it is characterised in that export-oriented by the RSU coverages in the OBU
Move in coverage, and current transmission path is the PC5 interfaces or institute between the RSU and the OBU
When stating relaying relay, the first choice module includes:
3rd judging unit, for judging whether the transmission strategy indicates the PC5 interfaces or the Uu interfaces
It is unsatisfactory for supporting the condition of the transmission V2X business;
3rd transmitting element, for when judged result is to be, sending the 4th configured information to the OBU, its
In, the 4th configured information be used to indicating the OBU select the Uu interfaces with switch the PC5 interfaces or
The relaying relay.
22. devices according to any one of claim 16 to 21, it is characterised in that the transmission strategy include with down to
It is one of few:Transmission that the signal quality that the measurement parameter of the transmission path is characterized is indicated is tactful, the RSU is local
The transmission of the transmission path that the transmission strategy of the default transmission path of/operator, system load balancing are indicated is tactful, described
The transmission strategy of the transmission path that OBU requests are indicated.
23. devices according to claim 22, it is characterised in that obtain the RSU and vehicle-mounted list in roadside unit RSU
Before the transmission strategy of the transmission path for being used for instruction transmission car networking V2X business between first OBU, described device
Also include:
Sending module, for sending the measurement parameter to OBU, wherein, the measurement parameter is used to indicate OBU
Measure the signal quality of the PC5 interfaces and Uu interfaces.
24. devices according to claim 22, it is characterised in that the measurement parameter includes at least one of bag
Include:Measurement object, measure the cycle, measurement thresholding, measurement event.
A kind of 25. selecting devices of car networking V2X service transmission path, are applied to board units OBU sides, it is characterised in that
Including:
Second acquisition module, indicates transmission vehicle for obtaining
The transmission strategy of the transmission path of networking V2X business, wherein, the transmission path includes multiple transmission paths;
Second selecting module, for the transmission path of the V2X business is supported according to the transmission policy selection.
26. devices according to claim 25, it is characterised in that the transmission path includes:For transmitting the V2X
The PC5 interfaces of business, the relaying relay for transmitting the V2X business.
27. devices according to claim 26, it is characterised in that the OBU is moved outside the RSU coverages,
And when between the RSU and the OBU, current transmission path is the relaying relay or described PC5 interfaces, institute
Stating the second selecting module includes:
4th judging unit, for judging whether the transmission strategy indicates that the relaying relay or described PC5 connect
Mouth is unsatisfactory for the condition for supporting the transmission V2X business;
First choice unit, for when judged result is to be, selecting to support the transmission path of the V2X business.
28. devices according to claim 27, it is characterised in that the OBU from the RSU coverages to
Move outside coverage, and current transmission path is the PC5 interfaces or institute between the RSU and the OBU
When stating relaying relay, second selecting module includes:
4th judging unit, for judging whether the transmission strategy indicates the PC5 interfaces or the relaying relay
It is unsatisfactory for supporting the transmission V2X professional qualifications;
Second select unit, for when judged result is to be, selecting to support the transmission path of the V2X business.
29. devices according to any one of claim 25 to 28, it is characterised in that the transmission strategy include with down to
It is one of few:Transmission that the signal quality that the measurement parameter of the transmission path is characterized is indicated is tactful, the RSU is local
The transmission strategy for transmitting tactful, described OBU requests of the default transmission strategy of/operator, system load balancing.
30. devices according to claim 29, it is characterised in that the measurement parameter includes at least one of bag
Include:Measurement object, measure the cycle, measurement thresholding, measurement event.
Priority Applications (2)
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CN201510624701.7A CN106559443A (en) | 2015-09-25 | 2015-09-25 | The system of selection of car networking V2X service transmission path and device |
PCT/CN2016/087243 WO2017049975A1 (en) | 2015-09-25 | 2016-06-27 | Method and apparatus for selecting vehicle to everything (v2x) service transmission path |
Applications Claiming Priority (1)
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CN201510624701.7A CN106559443A (en) | 2015-09-25 | 2015-09-25 | The system of selection of car networking V2X service transmission path and device |
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