CN104717307B - A kind of implementation method of vehicle-mounted cloud communication - Google Patents
A kind of implementation method of vehicle-mounted cloud communication Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention discloses a kind of implementation method of vehicle-mounted cloud communication, the vehicle-mounted cloud is built on vehicle-mounted net, and the vehicle-mounted net includes access node and vehicle node, and an access node is by geographical coordinate (x, y) unique mark；The geographical coordinate of each access node has network uniqueness；The vehicle node has routing function, and vehicle node realizes the communication with IPv6 internets by closest access node.Vehicle node can obtain service data by vehicle-mounted cloud implementation method provided by the present invention from closest cloud member with mode of unicast, shorten the delay for obtaining service data and cost, improve service quality, present invention can apply to fields such as road conditions monitoring, vehicle managements, it is with a wide range of applications.
Description
Technical field
The present invention relates to a kind of automobile wireless communication network implementation method, more particularly to a kind of reality of vehicle-mounted cloud communication
Existing method.
Background technology
Vehicle-mounted cloud is built upon on vehicle-mounted net and can provide a kind of service mode of local service.In recent years, Hen Duoyan
Study carefully work and be directed to vehicle-mounted cloud, to enable vehicle drive people's quick obtaining network service.With the development of vehicle-mounted network technology,
Vehicle-mounted cloud can turn into a kind of following pattern for providing service.
At present, the implementation pattern of vehicle-mounted cloud is realized by broadcasting, therefore delay and cost reduce net all than larger
Network service performance.Therefore, the hot issue of delay and cost as Recent study that vehicle-mounted cloud provides service how is reduced.
The content of the invention
Goal of the invention：The technical problems to be solved by the invention are that there is provided a kind of vehicle-mounted cloud in view of the shortcomings of the prior art
The implementation method of communication.
Technical scheme：The invention discloses a kind of implementation method of vehicle-mounted cloud communication, the vehicle-mounted cloud is built in vehicle-mounted net
On, the vehicle-mounted net includes access node and vehicle node, and an access node is by geographical coordinate (x, y) unique mark；Often
The geographical coordinate of individual access node has network uniqueness；The vehicle node has routing function, and vehicle node passes through distance
Nearest access node realizes the communication with IPv6 internets；
The vehicle-mounted cloud is made up of an access node and more than one vehicle node, and vehicle node is vehicle-mounted cloud member；
One access node and all vehicle nodes communicate one subnet of composition is realized by oneself and IPv6 internets,
Vehicle-mounted net is made up of more than one subnet；
The unicast address structure of access node and vehicle node is made up of three parts：Part I is access node ID, it
It is global route prefix, one subnet of unique mark, access node ID is made up of two parts, i.e. access node geographic location
Abscissa and ordinate；Part II is address style, is made up of a bit, and when the value is 1, it is list to show the address
Broadcast address；Part III is inside ID, and when vehicle node enters a new subnet, the vehicle node passes through neighbours' vehicle section
Point or access node obtain access node ID and inside ID and constitute the address with global uniqueness in new subnet；Access
Inside ID in the unicast address of node is 0；The unicast address length of access node and vehicle node is 128 bits, access section
Point ID length span is [64,112]；
Access node is that stationary nodes are used to set up vehicle-mounted cloud, and regularly publishes the service of access node geographic location
Data；Each service data is by data ID unique marks；When vehicle node needs the service of access node geographic location
During data, service data is obtained using data address；Data address is made up of two parts, and Part I is access node ID,
It is global route prefix, and one subnet of unique mark, access node ID is made up of two parts, i.e., geographical position where access node
The abscissa and ordinate put；Part II is address style, is made up of a bit, when the value is 0, shows that the address is
Data address；Part III be data ID set, its content for the service data to be obtained all data ID；Data ID's
Length is determined that it is [4,8] to set scope by the species number of service data.
In the method for the invention, access node periodically sets up vehicle-mounted cloud and provides the service data of address position,
Such as traffic information, temperature information etc.；Access node and vehicle-mounted cloud member in each vehicle-mounted cloud preserve a service data table,
Each list item in the service data that vehicle-mounted cloud where to record is provided, the service data table includes four domains：Data ID, ground
Location position coordinates, data content, and life cycle；Wherein address location coordinate is the access node or car for preserving the list item
Carry the address location coordinate of cloud member；
Access node AP1 in subnet A1 is created vehicle-mounted cloud by following processes and provides service data：
Step 101：Start；
Step 102：Access node AP1 broadcasts an establishment cloud message, and the establishment cloud Message Source Address is access node AP1
Unicast address, create the data ID that cloud Message Payload is all service datas that the vehicle-mounted cloud that is created is provided and gather；
Step 103：Vehicle node in subnet A1 is received after establishment cloud message, judges access section oneself whether can be provided
At least one service data that point AP1 is asked, if it is, carrying out step 104, otherwise carries out step 105：
Step 104：Vehicle node returns to cloud member's message to access node AP1, and cloud member Message Source Address is vehicle section
The point unicast address of oneself, cloud member Message Payload is the geographical position coordinates of vehicle node oneself and the service that can be provided
Data；Return to step 102；
Step 105：Vehicle node forwarding creates cloud message；
Step 106：Access node AP1 was waited after the scheduled time, arranged all cloud member message received, then created clothes
Business tables of data, the service data table table name is named with access node AP1 access node ID, then by the clothes in cloud member's message
Business data are added in service data table, and send the shared message of a data, data sharing Message Payload to each cloud member
For the service data table；
Step 107：Cloud member is received after the data sharing message of access node, preserves service data table, and table name is constant；
Step 108：Terminate；
In step 106, the scheduled time is set to subnet diameter and is multiplied by the delay that communication one is jumped；
After the life span of list item in service data table is expired, corresponding list item is automatically deleted from service data table；
Access node AP1 is detected after entry expiration, re-creates vehicle-mounted cloud.
By said process, access node AP1 and all cloud members can provide access node AP1 addresses position
Service data, such as traffic information, temperature information etc..
In the method for the invention, when a vehicle node V6 needs to obtain access node AP1 address position coordinateses
During the service data of (x1, y1), the vehicle node obtains required service data using data address：
Step 201：Start；
Step 202：Vehicle node V6 builds data address, and access node ID is access node AP1 access node ID, ground
Location type is 0, and data ID collection, which is combined into vehicle node V6, needs the data ID of the service data obtained to gather, such as 1 and 2, then
Vehicle node V6 builds data request information, and data request information source address is vehicle node V6 unicast address, destination address
For the data address of structure, and the geographical position according to access node AP1 and routing table information, data request information is forwarded
To next-hop node；
Step 203：Next-hop node is received after data request information, judges whether oneself has connecing with access node AP1
The service data table and the list item of the service data table that ingress ID is named can provide the apllied all data of vehicle node V6,
If it is, carrying out step 204, step 205 is otherwise carried out；
Step 204：Next-hop node is to vehicle node V6 returned data response messages, data response message destination address
Vehicle node V6 unicast address, source address is the unicast address of next-hop node, and the load of data response message is vehicle node
The corresponding list item for the service data table that the access node ID that the apllied service datas of V6, i.e. table name are access node AP1 is named,
Carry out step 206；
Step 205：Geographical position and routing table information of the next-hop node according to access node AP1, by request of data
Message is forwarded to next-hop, return to step 203；
Step 206：Vehicle node V6 is received after data response message, preserves the service data obtained, then creates service
Tables of data, the service data table table name is named with access node AP1 access node ID, then adds the service data of acquisition
Into service data table；
Step 207：Terminate；
In said process, cloud member, Neng Gouti are turned into after vehicle node V6 obtains access node AP1 service data
For all or part of service data that geographical position is access node AP1；The worst situation is vehicle node in said process
V6 obtains data response message, i.e. service data from access node AP1, so that it is guaranteed that obtaining the success rate of service data.
By said process, by the access node AP1 vehicle-mounted clouds created member can service data table Life Cycle
Spread all over whole vehicle-mounted net in phase, for ensuring the service data that vehicle node can be required for quick obtaining；
After the life span of all list items of the service data table of cloud member is all expired, the cloud member deletion service data
Table, while nullifying the identity of cloud member；
Said process may insure that vehicle node node nearest in office obtains required service data, the worst feelings
Condition be access node AP1 to vehicle node V6 returned data response messages, therefore service quality has been effectively ensured, has also improved and obtain
The success rate for evidence of fetching.
The present invention realizes vehicle-mounted cloud by way of unicast substitution broadcast, so as to reduce the delay that vehicle-mounted cloud provides service
And cost, so as to effectively improve network service performance.
Beneficial effect：The invention provides a kind of implementation method of vehicle-mounted cloud communication, vehicle node is carried by the present invention
The vehicle-mounted cloud implementation method supplied can obtain service data from closest cloud member with mode of unicast, shorten acquisition service
The delay of data and cost, improve service quality, and present invention can apply to the fields such as road conditions monitoring, vehicle management, tool
Have wide practical use.
Brief description of the drawings
The present invention is done with reference to the accompanying drawings and detailed description and further illustrated, of the invention is above-mentioned
And/or otherwise advantage will become apparent.
Fig. 1 is vehicle-mounted cloud architectural schematic of the present invention.
Fig. 2 is unicast address structural representation of the present invention.
Fig. 3 is data address structural representation of the present invention.
Fig. 4 creates vehicle-mounted cloud schematic flow sheet to be of the present invention.
Fig. 5 is the schematic flow sheet of the present invention for obtaining service data.
Embodiment：
The invention provides a kind of implementation method of vehicle-mounted cloud communication, vehicle node passes through vehicle-mounted cloud provided by the present invention
Implementation method can obtain service data from closest cloud member with mode of unicast, shorten the delay for obtaining service data
And cost, service quality is improved, present invention can apply to fields such as road conditions monitoring, vehicle managements, is answered with extensive
Use prospect.
Fig. 1 is vehicle-mounted cloud architectural schematic of the present invention.The vehicle-mounted cloud is built on vehicle-mounted net, described
Vehicle-mounted net includes access node 1 and vehicle node 2, and an access node 1 is by geographical coordinate (x, y) unique mark；Each access
The geographical coordinate of node 1 has network uniqueness；The vehicle node 2 has routing function, and vehicle node 2 is by closest
Access node 1 realize and the communication of IPv6 internets；The vehicle-mounted cloud is by an access node 1 and more than one vehicle node
2 are constituted, and vehicle node 2 is vehicle-mounted cloud member；One access node 1 and realize that what is communicate owns by oneself and IPv6 internets
Vehicle node 2 constitutes a subnet 3, and vehicle-mounted net is made up of more than one subnet 3.
Fig. 2 is unicast address structural representation of the present invention.The unicast address structure of access node and vehicle node
It is made up of three parts：Part I is access node ID, and it is global route prefix, one subnet of unique mark, access node
ID is made up of two parts, i.e. the abscissa and ordinate of access node geographic location；Part II is address style, by one
Individual bit is constituted, and when the value is 1, it is unicast address to show the address；Part III is inside ID, when vehicle node enters one
During individual new subnet, the vehicle node obtains access node ID and inside ID simultaneously by neighbours' vehicle node or access node
Constitute the address in new subnet with global uniqueness；Inside ID in the unicast address of access node is 0.Access node and car
The unicast address length of node is 128 bits, and access node ID length span is [64,112].
Fig. 3 is data address structural representation of the present invention.Access node is that stationary nodes are used to set up vehicle-mounted cloud,
And regularly publish the service data of access node geographic location；Each service data is by data ID unique marks；Work as car
When node needs the service data of access node geographic location, service data is obtained using data address；Data
Location is made up of two parts, and Part I is access node ID, and it is global route prefix, one subnet of unique mark, access section
Point ID is made up of two parts, i.e. the abscissa and ordinate of access node geographic location；Part II is address style, by
One bit is constituted, and when the value is 0, it is data address to show the address；Part III is gathered for data ID, and its content is institute
All data ID for the service data to be obtained.Data ID length is determined by the species number of service data, sets scope
For [4,8].
Fig. 4 creates vehicle-mounted cloud schematic flow sheet to be of the present invention.Access node periodically sets up vehicle-mounted cloud and provides institute
Service data in address location, such as traffic information, temperature information etc.；Access node and vehicle-mounted cloud in each vehicle-mounted cloud into
Member preserves a service data table, the service data that vehicle-mounted cloud where to record is provided, each table in the service data table
Item includes four domains：Data ID, address location coordinate, data content, and life cycle；Wherein address location coordinate is preservation
The access node of the list item or the address location coordinate of vehicle-mounted cloud member；
Access node AP1 in subnet A1 is created vehicle-mounted cloud by following processes and provides service data：
Step 101：Start；
Step 102：Access node AP1 broadcasts an establishment cloud message, and the establishment cloud Message Source Address is access node AP1
Unicast address, create the data ID that cloud Message Payload is all service datas that the vehicle-mounted cloud that is created is provided and gather；
Step 103：Vehicle node in subnet A1 is received after establishment cloud message, judges access section oneself whether can be provided
At least one service data that point AP1 is asked, if it is, carrying out step 104, otherwise carries out step 105：
Step 104：Vehicle node returns to cloud member's message to access node AP1, and cloud member Message Source Address is vehicle section
The point unicast address of oneself, cloud member Message Payload is the geographical position coordinates of vehicle node oneself and the service that can be provided
Data；Return to step 102.
Step 105：Vehicle node forwarding creates cloud message；
Step 106：Access node AP1 was waited after the scheduled time, arranged all cloud member message received, then created clothes
Business tables of data, the service data table table name is named with access node AP1 access node ID, then by the clothes in cloud member's message
Business data are added in service data table, and send the shared message of a data, data sharing Message Payload to each cloud member
For the service data table；
Step 107：Cloud member is received after the data sharing message of access node, preserves service data table, and table name is constant；
Step 108：Terminate；
In step 106, the scheduled time is set to subnet diameter and is multiplied by the delay that communication one is jumped；
After the life span of list item in service data table is expired, corresponding list item is automatically deleted from service data table；
Access node AP1 is detected after entry expiration, re-creates vehicle-mounted cloud.
By said process, access node AP1 and all cloud members can provide access node AP1 addresses position
Service data, such as traffic information, temperature information etc..
Fig. 5 is the schematic flow sheet of the present invention for obtaining service data.When a vehicle node V6 needs acquisition to connect
During the service data of ingress AP1 addresses position coordinates (x1, y1), needed for the vehicle node is obtained using data address
The service data wanted：
Step 201：Start；
Step 202：Vehicle node V6 builds data address, and access node ID is access node AP1 access node ID, ground
Location type is 0, and data ID collection, which is combined into vehicle node V6, needs the data ID of the service data obtained to gather, such as 1 and 2, then
Vehicle node V6 builds data request information, and data request information source address is vehicle node V6 unicast address, destination address
For the data address of structure, and the geographical position according to access node AP1 and routing table information, data request information is forwarded
To next-hop node；
Step 203：Next-hop node is received after data request information, judges whether oneself has connecing with access node AP1
The service data table and the list item of the service data table that ingress ID is named can provide the apllied all data of vehicle node V6,
If it is, carrying out step 204, step 205 is otherwise carried out；
Step 204：Next-hop node is to vehicle node V6 returned data response messages, data response message destination address
Vehicle node V6 unicast address, source address is the unicast address of next-hop node, and the load of data response message is vehicle node
The corresponding list item for the service data table that the access node ID that the apllied service datas of V6, i.e. table name are access node AP1 is named,
Carry out step 206；
Step 205：Geographical position and routing table information of the next-hop node according to access node AP1, by request of data
Message is forwarded to next-hop, return to step 203；
Step 206：Vehicle node V6 is received after data response message, preserves the service data obtained, then creates service
Tables of data, the service data table table name is named with access node AP1 access node ID, then adds the service data of acquisition
Into service data table；
Step 207：Terminate；
In said process, cloud member, Neng Gouti are turned into after vehicle node V6 obtains access node AP1 service data
For all or part of service data that geographical position is access node AP1；
By said process, by the access node AP1 vehicle-mounted clouds created member can service data table Life Cycle
Spread all over whole vehicle-mounted net in phase, for ensuring the service data that vehicle node can be required for quick obtaining；
After the life span of all list items of the service data table of cloud member is all expired, the cloud member deletion service data
Table, while nullifying the identity of cloud member；
Said process may insure that vehicle node node nearest in office obtains required service data, the worst feelings
Condition be access node AP1 to vehicle node V6 returned data response messages, therefore service quality has been effectively ensured, has also improved and obtain
The success rate for evidence of fetching.
Embodiment 1
Based on the simulation parameter of table 1, the present embodiment simulates the vehicle-mounted cloud implementation method in the present invention, and performance evaluation is such as
Under：In the case that vehicle-mounted cloud number of members is constant, with the increase of lane length, obtain service data delay and cost with
Increase；In the case that lane length is constant, with the increase of vehicle-mounted cloud number of members,
The distribution area of vehicle-mounted cloud member is more extensive, therefore the delay of acquisition service data and cost all decline therewith.Car
The average retardation that node obtains service data is 30ms, and average cost is 5.5.
The simulation parameter of table 1
The invention provides the thinking of the implementation method of vehicle-mounted cloud communication, the method and approach of the technical scheme are implemented
A lot, described above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.Each component part being not known in the present embodiment can use prior art to be realized.
Claims (8)
1. a kind of implementation method of vehicle-mounted cloud communication, it is characterised in that the vehicle-mounted cloud is built on vehicle-mounted net, described vehicle-mounted
Net includes access node and vehicle node, and an access node is by geographical coordinate (x, y) unique mark；The ground of each access node
Reason coordinate has network uniqueness；The vehicle node has routing function, and vehicle node passes through closest access node
Realize the communication with IPv6 internets；
The vehicle-mounted cloud is made up of an access node and more than one vehicle node, and vehicle node is vehicle-mounted cloud member；
One access node and all vehicle nodes communicate one subnet of composition is realized by oneself and IPv6 internets, it is vehicle-mounted
Net is made up of more than one subnet；
The unicast address structure of access node and vehicle node is made up of three parts：Part I is access node ID, and it is complete
Office's route prefix, one subnet of unique mark, access node ID is made up of two parts, i.e. the horizontal stroke of access node geographic location
Coordinate and ordinate；Part II is address style, is made up of a bit, when the value is 1, shows the address for unicast
Location；Part III is inside ID；
Access node is that stationary nodes are used to set up vehicle-mounted cloud, and regularly publishes the service number of access node geographic location
According to；Each service data is by data ID unique marks；When vehicle node needs the service number of access node geographic location
According to when, service data is obtained using data address；Data address is made up of two parts, and Part I is access node ID, it
It is global route prefix, one subnet of unique mark, access node ID is made up of two parts, i.e. access node geographic location
Abscissa and ordinate；Part II is address style, is made up of a bit, and when the value is 0, it is number to show the address
According to address；Part III be data ID set, its content for the service data to be obtained all data ID；
Access node periodically sets up vehicle-mounted cloud and provides the service data of address position；Access node in each vehicle-mounted cloud
A service data table is preserved with vehicle-mounted cloud member, the service data that vehicle-mounted cloud where to record is provided, the service data table
In each list item include four domains：Data ID, address location coordinate, data content, and life cycle；Wherein address location
Coordinate is the address location coordinate for the access node or vehicle-mounted cloud member for preserving the list item；
Access node AP1 in subnet A1 is created vehicle-mounted cloud by following processes and provides service data：
Step 101：Start；
Step 102：Access node AP1 broadcasts an establishment cloud message, and the establishment cloud Message Source Address is access node AP1 list
Address is broadcast, the data ID set for all service datas that the vehicle-mounted cloud for creating cloud Message Payload to be created is provided；
Step 103：Vehicle node in subnet A1 is received after establishment cloud message, judges whether oneself can provide access node
At least one service data that AP1 is asked, if it is, carrying out step 104, otherwise carries out step 105：
Step 104：Vehicle node to access node AP1 return cloud member's message, cloud member Message Source Address be vehicle node from
Oneself unicast address, cloud member Message Payload is the geographical position coordinates of vehicle node oneself and the service number that can be provided
According to；Return to step 102；
Step 105：Vehicle node forwarding creates cloud message；
Step 106：Access node AP1 was waited after the scheduled time, arranged all cloud member message received, then created service number
According to table, the service data table table name is named with access node AP1 access node ID, then by the service number in cloud member's message
According to being added in service data table, and send a data to each cloud member and share message, data sharing Message Payload is institute
State service data table；
Step 107：Cloud member is received after the data sharing message of access node, preserves service data table, and table name is constant；
Step 108：Terminate；
In step 106, the scheduled time is set to subnet diameter and is multiplied by the delay that communication one is jumped；
After the life span of list item in service data table is expired, corresponding list item is automatically deleted from service data table；
Access node AP1 is detected after entry expiration, re-creates vehicle-mounted cloud.
2. the implementation method of vehicle-mounted cloud communication according to claim 1, it is characterised in that when vehicle node enters one newly
Subnet when, the vehicle node obtains access node ID and inside ID by neighbours' vehicle node or access node and constituted
There is the address of global uniqueness in new subnet；Inside ID in the unicast address of access node is 0.
3. the implementation method of vehicle-mounted cloud communication according to claim 1, it is characterised in that access node and vehicle node
Unicast address length is 128 bits, and access node ID length span is [64,112].
4. the implementation method of vehicle-mounted cloud communication according to claim 1, it is characterised in that data ID length is by service number
According to species number determine that it is [4,8] to set scope.
5. the implementation method of vehicle-mounted cloud communication according to claim 1, it is characterised in that when a vehicle node V6 needs
Obtain access node AP1 address position coordinateses (x1,y1) service data when, the vehicle node is obtained using data address
Take required service data：
Step 201：Start；
Step 202：Vehicle node V6 builds data address, and access node ID is access node AP1 access node ID, address class
Type is 0, and data ID collection, which is combined into vehicle node V6, needs the data ID of the service data obtained to gather, and then vehicle node V6 is built
Data request information, data request information source address is vehicle node V6 unicast address, and destination address is the data that build
Location, and the geographical position according to access node AP1 and routing table information, next-hop node is forwarded to by data request information；
Step 203：Next-hop node is received after data request information, judges the access section for oneself whether having with access node AP1
The service data table and the list item of the service data table that point ID is named can provide the apllied all data of vehicle node V6, if
It is then to carry out step 204, otherwise carries out step 205；
Step 204：Next-hop node is to vehicle node V6 returned data response messages, and data response message destination address is vehicle
Node V6 unicast address, source address is the unicast address of next-hop node, and the load of data response message is vehicle node V6 institutes
The service data of application, i.e. table name are the corresponding list item of the access node AP1 access node ID service data tables named, and are carried out
Step 206；
Step 205：Geographical position and routing table information of the next-hop node according to access node AP1, by data request information
It is forwarded to next-hop, return to step 203；
Step 206：Vehicle node V6 is received after data response message, is preserved the service data obtained, is then created service data
Table, the service data table table name is named with access node AP1 access node ID, and the service data of acquisition then is added into clothes
In tables of data of being engaged in；
Step 207：Terminate.
6. the implementation method of vehicle-mounted cloud communication according to claim 5, it is characterised in that accessed when vehicle node V6 is obtained
Turn into cloud member after node AP1 service data, using the teaching of the invention it is possible to provide geographical position is access node AP1 all or part of clothes
Business data.
7. the implementation method of vehicle-mounted cloud communication according to claim 5, it is characterised in that created by access node AP1
The member of vehicle-mounted cloud can spread all over whole vehicle-mounted net in the life cycle of service data table, for ensuring that vehicle node can be fast
Speed obtains required service data.
8. the implementation method of vehicle-mounted cloud communication according to claim 5, it is characterised in that when the service data table of cloud member
All list items life span it is all expired after, cloud member deletion service data table, while nullifying the identity of cloud member.
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| JP6775013B2 (en) * | 2015-10-23 | 2020-10-28 | オラクル・インターナショナル・コーポレイション | Self-describing a configuration with support for sharing data tables |
| US20170213461A1 (en) * | 2016-01-21 | 2017-07-27 | Ford Global Technologies, Llc | System and method for vehicle group communication via dedicated short range communication |
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