CN102724663A - Relay-based cooperative communication system for Internet of Vehicles - Google Patents
Relay-based cooperative communication system for Internet of Vehicles Download PDFInfo
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Abstract
The invention provides a relay-based cooperative communication system for Internet of Vehicles, comprising an access module of Internet of Vehicles, a network and transmission module of Internet of Vehicles, a management module of Internet of Vehicles, base station equipment of Internet of Vehicles, an information security module of Internet of Vehicles and an application module of Internet of Vehicles. The access module of Internet of Vehicles is used for providing access ports; the network and a transmission module of Internet of Vehicles are used for providing a network transmission system similar to or fully compatible with a corresponding network for different networks and routing policies of Internet of Vehicles; the information security module of Internet of Vehicles is used for providing key management and identity authentication for communications of Internet of Vehicles; the management module of Internet of Vehicles, as a control center of Internet of Vehicles, is used for managing and maintaining information of vehicles in the network, information of road conditions, etc.; and the application module of Internet of Vehicles is used for providing ports for access to a backup network for users in Internet of Vehicles. With the relay-based cooperative communication system for Internet of Vehicles, transparent access to the network can be realized in a variety of ways for Internet of Vehicles, communication continuity and data sharing in the whole network can be guaranteed, and communication efficiency of Internet of Vehicles is improved.
Description
Technical field
The present invention relates to a kind of car networking field, particularly a kind of car networking communication for coordination system based on relaying.
Background technology
The car networking is to be basic information unit (BIU) with the vehicle;, in one road entities such as pedestrian, vehicle, road side facility are connected with backup network with traffic administration network, mobile network through sensor technology, information acquiring technology, access technology, transmission technology, networking technology; Serve application such as vehicle safety, traffic control, information service, user network access; Be intended to improve traffic, improve the intelligent comprehensive network system that line efficiency, expands the information interaction form.The car networking has popularity, mobility and intelligent three characteristics.Car networking is a kind of special networks with regard to its essence, and popularity refers to that the car defined vehicle of networking is a generalized concept, comprises the vehicles such as aircraft, boats and ships, railway.Except vehicle, the car networking also comprises related facilities such as road side facility, onboard sensor, data server.For different communication equipment and network access mode, the car networking all provides corresponding interface.Mobility is the basic characteristic of car networking, and the continuous motion of vehicle makes that the topological structure of car networking is complicated, dynamic is high.Car networking can provide one or more interfaces to satisfy user's communication requirement that enters the Internet for any place user, realizes that vehicle and car networked server carry out Real-time Data Service (as traffic information being provided, the map download service of position-based information etc.).Intelligently refer to car networking and can initiatively pass through various transducers, obtain vehicle and traffic information in real time and make respective reaction, rather than passive acquisition of information, outstanding message is processed.
At present both at home and abroad car networking research being mainly contained the IntelliDriveSM project that DOT organized from 2009 is the large-scale ITS research and development plan that brand-new solution is provided for the traffic system operation.This research and development plan is intended to set up the cordless communication network between vehicle and vehicle, vehicle and the infrastructure, and realizes enhancing traffic safety, the application that promotes traffic circulation efficient and improve aspects such as traffic environment on this basis.Bus or train route cooperative system research and development plan is the large-scale ITS R & D project that European Union supports; Main purpose is design, development& testing in order to realize the technology of signal post's need between communication between the vehicle and vehicle and near the roadside infrastructure, is intended to improve the mobility of passenger and goods and the efficient of road traffic transportation system.This project is installed the wireless network terminal of the unified standard that realizes that the communication of car car is communicated by letter with bus or train route on vehicle; Realize the vehicle location and the dynamic digital map function of multiple function simultaneously; On the basis of bus or train route communication; Realize road network monitoring and event detection system, simultaneously, also will realize functions such as driver assistance, traffic administration, trip service and commercial car management.Japanese government and related industry are just setting about researching and developing follow-on intelligent transportation system SMARTWAY; The time of planning with 5 years covers the cognitive transducer of road conditions on strategic road; Make up coherent system between personal vehicle system, intelligent roadnet, bus or train route; And be communicated with the real-time release of realization transport information with the Internet through fiber optic network.The existing now a part of colleges and universities of China have carried out relevant research with research institution; For example; National science and technology special topic for tackling key problems " Smartway Technical Follow-Up "; Country's 863 problems " intelligent roadnet message structure and environment sensing and reconfiguration technique research ", " intelligent road of coordinating based on bus or train route identifies and cognition technology research " etc., also existing researchs aspect vehicle-carrying communication.
Existing vehicle network is because lack overall coordination communications framework and protocol stack, has whole network data collection shortage, information sharing is insufficient and data interaction real-time deficiency etc. influences the problem of vehicle safety.
Summary of the invention
The object of the present invention is to provide a kind of car networking communication for coordination system based on relaying, to realize the car transparent access network of multiple mode of networking, guarantee communication continuity, whole network data is shared and is improved car connected network communication efficient.
Reach other purposes in order to achieve the above object; Car networking communication for coordination system based on relaying provided by the invention; Comprise: car networking AM access module, car networking network and transport module, car network management module, car networking base station equipment, car networked information security module and car working application module; Wherein, Said car networking AM access module is connected with transport module, car networked information security module and car network management module with said car networking network, is used to provide access interface, so that can insert the information relevant with vehicle and road conditions that is transferred to by different type network; Said car networking network is connected with said car networked information security module, car networking base station equipment and car network management module with transport module; Be used for different car networking network, routing policy, provide similar or the Network Transmission system of compatibility fully with corresponding network; Said car networked information security module is connected with said car networking base station equipment and car working application module, and being used to the car connected network communication provides key management, authentication to maintain secrecy with what guarantee to transmit between each traffic entity; Also be used to provide safe route, data dissemination, in communication process, do not distorted, abandon or insert false data to guarantee data; Also be used to provide the time synchronized of location and location verification, safety; Said car network management module is connected with said car networking base station equipment and car working application module, is used to administer and maintain networking information of vehicles, traffic information, in heterogeneous network, vertically switches and strides a layer resource management mechanism to realize vehicle; Also being used for coordinating the promising vehicle of car networking provides serving base station, machine-processed with the QoS of the seamless switching of realizing vehicle level between different base station and car connected network communication, and according to the information and the class of business of networking vehicle, the service of different priorities is provided; Car networking base station equipment is connected, is used to provide session support, information support and the unified Applied layer interface of standard with car working application module; Said car working application module is used to provide the car on-line customer interface of other non-safe or non real-time access reserve nets.
Wherein, Said car network management module also comprises: with the switch unit of media independent; Be used to carry out data processing; And,, comprise the selection of wireless resource allocation, user access control, address administration, accurate location management, the switching between different base station and node for different access waies provide corresponding resource according to data business content.
In sum; Car networking communication for coordination system based on relaying of the present invention can be implemented on the information network platform to the attribute information of all vehicles and quiet, multidate information extracts and effectively utilize, and effectively supervises and provide integrated service according to the different functions demand to the running status of all vehicles.
Description of drawings
Fig. 1 is the application scenarios sketch map of the car networking communication for coordination system based on relaying of the present invention.
Fig. 2 is the structural representation of the car networking communication for coordination system based on relaying of the present invention.
Fig. 3 is the car networking communication for coordination protocol stack structure figure of the car networking communication for coordination system based on relaying of the present invention.
Fig. 4 is car networking communication for coordination switching sketch map system and media independent based on relaying of the present invention.
Embodiment
The application scenarios of the car networking communication for coordination system based on relaying of the present invention is as shown in Figure 1, and the traffic entity in this application scenarios comprises: transducer,, road side facility and vehicle etc.Wherein, transducer comprises: the inspection vehicle flow bury ground coil, the video detection system of intersection, the velocity transducer on the car etc., be used for being responsible for collecting vehicle relevant information and traffic information.Road side facility is divided into according to the different radio access way: the Wimax base station; NodeB; The Wifi access device is used for issuing traffic information and receiving the vehicle relevant information through wireless mode, uploads the car networked server and also for the vehicle that gets into service range the access interface is provided.Vehicle is collected traffic information through onboard sensor on the one hand as the car important component part of networking, and receives the information that road side facility sends on the other hand, satisfies the professional demand of vehicle user different pieces of information.
In short, the communication of car networking is divided into three major types: communicating by letter between the communication in the car, vehicle interior control unit and vehicle sensors and wireless transmitting-receiving equipments; Car car communication, by Ad hoc networking mode, the not direct communication through infrastructure; Bus or train route communication, vehicle is communicated by letter with road side facility, and vehicle is communicated by letter with road side facility with the mode of single-hop or multi-hop.This has comprised that also vehicle inserts the reserve net through road side facility.
Based on above-mentioned three kinds of different communication modes; Car networking communication for coordination system based on relaying of the present invention comprises: car networking AM access module, car networking network and transport module, car network management module, car networking base station equipment, car networked information security module and car working application module, and as shown in Figure 2.
Said car network management module administers and maintains networking information of vehicles, traffic information respectively as the control centre of car networking; Realize that vehicle vertically switches and strides a layer resource management mechanism in heterogeneous network; Promising vehicle provides serving base station in the networking of coordination car, realizes the seamless switching of vehicle level between different base station; Realize the QoS mechanism of car connected network communication, information and class of business according to the networking vehicle provide the service of different priorities etc.
Said car networked information security module is secret for the car connected network communication provides key management, authentication to guarantee that car is networked and transmitted between traffic entity such as transducer, vehicle, base station; Safe route, data dissemination are provided, and the assurance data are not distorted, are abandoned or inserted false data in communication process; Location and location verification are provided, and car networking major applications relies on positional information accurately, and networking has significance to the accuracy of positional information to car; Safe time synchronized is provided, and real time business, the especially Secure Application of car networking requires highly accurate whole net synchronously.
Said car working application module provides the car on-line customer interface of other non-safe or non real-time access reserve nets.Module has forward and backward compatibility property, can compatible existing network system and following possible new application.
Said car networking network and transport module be based on bottom different car networking network, routing policy, provides similar with existing network or the Network Transmission system of compatibility fully.Said car networking network and transport module are fused into uniform data format with basic TCP/UDP agreement, intelligent transportation information etc.
Said car networking AM access module is used to bottom sensor network, wireless network and cable network provides unified access interface.
In addition; With the car networking base station equipment that said car networking network is connected with transport module, car network management module, car networked information security module and car working application module, being used to upper layer application provides the session support of standard, information support and unified Applied layer interface.Car networking base station equipment can be that WIMAX equipment, WIFI access device, 2G/3G base station and other can insert and the base station of information service for vehicle provide.
The car networking communication for coordination protocol stack of said car networking communication for coordination system based on relaying is as shown in Figure 3.Be bus or train route communication for coordination definition function corresponding and structure from physical layer, MAC layer, network layer, transport layer; According to car shown in Figure 3 networking co-architecture, protocol stack is that the various application of networking of car network management module, car networked information security module and upper deck provide unified interface.Car network management interface is responsible for inner each interlayer of car networking, and the fusion of various communications protocols provides error control, scheduling of resource and the routing mechanism etc. of data service; Physical layer and MAC layer are responsible for the work of car networking bottom communication.Inter-vehicular communication mainly uses the IEEE802.11 agreement, and the IEEE802.11a/b/g agreement is used for wireless networking in a large number, and 802.11p is the agreement of vehicle self-organizing network appointment especially specially.Bus or train route communication can be used 2G/3G technology, satisfies long apart from communicating by letter between vehicle and road side facility.Communication can be used bluetooth, technology such as infrared in the car; Network layer and transport layer protocol, the data of fusion bottom different vehicle access way are uploaded to Applied layer interface to pay(useful) load, and transport layer needs the synchronous of synchronous car networking and routing mechanism efficiently, mobile management etc. is provided.The thing of considering the car networking joins characteristic, and network layer is used autgmentability IPv6 agreement preferably.Protocol stack upper layer application interface is that car networking upper strata traffic safety, data service provide unified interface, and interface is except comprising related protocols such as transport information, control information, can also with existing compatible with internet.Custom protocol is in order to improve the forward and backward compatibility property of car networking protocol stack, and Applied layer interface is also supported user-defined agreement except existing network system common protocol.This communication for coordination protocol stack, through the analysis to vehicle net practical business stream, design is applicable to the agreement of vehicle environment with reference to the existing network system layering, has good autgmentability.
Consider from actual car networking scene, possibly have interface (ZigBee, the Wi-Fi of a plurality of heterogeneous networks on the moving vehicle simultaneously; Bluetooth, infrared etc.), after relaying technique is introduced in the car networking; The mutual of signaling will be carried out through relay in base station and terminal, rather than direct communication between the two.Serve as the gateway effect by the vehicle relaying, merge the communication mode of multimode, for the vehicle termination user, network details is transparent.Fusion based on relaying multimode technology can be so that the different radio transmission technology be complementary.In addition; The said corresponding judgement of user terminal being made resource allocation optimization based on the car networking communication for coordination system ability assistant base station equipment of relaying; Alleviate burden to the base station; The throughput of raising system and data transmission bauds, and can provide different service quality to guarantee according to dissimilar business.Another advantage of said car networking communication for coordination system based on relaying is; Need not make the fusion that change just can realize heterogeneous network to existing network system standard; From economic angle, said car networking communication for coordination system based on relaying makes car networking isomery merge becomes possibility.
Said car network management module also comprises the switch unit with media independent, and is as shown in Figure 4.For prior wireless network, dissimilar access waies has different MAC layer (MAC) and mobility management protocol with wireless network, and network layer and above agreement are essentially identical.Therefore, between the second layer and the 3rd layer protocol, use said and switch unit media independent, can well shield the otherness of the different access waies of car networking bottom, satisfy the problem that heterogeneous network merges.As shown in Figure 4; Physical layer packet contains different wireless technologies such as sensor network, bluetooth, 3G; When these isomery access waies send to the MAC layer with data, carry out the processing of data by said switch unit (MIHF) with media independent is unified, according to data business content; For different access waies provide corresponding resource, like wireless resource allocation, user access control, address administration or the like.Vehicle or user for moving also need provide the selection of accurate location management, the switching between different base station and node.At last, data are transmitted data by the QoS management sub-layer to the upper strata.
In sum; Real-time, the efficient and two-way information interaction of passing through pedestrian, vehicle and road side facility based on the car networking communication for coordination system of relaying of the present invention; In conjunction with car inner sensor network and car internal controller; Can complete real-time, reliable transport information be provided for traffic participant; Realize people, car, road collaborative work, be implemented on the information network platform to the attribute information of all vehicles and quiet, multidate information extracts and effectively utilize, and effectively supervises and provide integrated service according to the different functions demand to the running status of all vehicles.And, owing to have the switch unit with media independent, can well shield the otherness of the different access waies of car networking bottom, satisfy the problem that heterogeneous network merges.
The foregoing description is just listed expressivity principle of the present invention and effect is described, but not is used to limit the present invention.Any personnel that are familiar with this technology all can make amendment to the foregoing description under spirit of the present invention and scope.Therefore, rights protection scope of the present invention should be listed like claims.
Claims (4)
1. one kind based on the car of relaying networking communication for coordination system; It is characterized in that comprising: car networking AM access module, car networking network and transport module, car network management module, car networking base station equipment, car networked information security module and car working application module; Wherein
Said car networking AM access module is connected with transport module, car networked information security module and car network management module with said car networking network; Be used to provide access interface, so that can insert the information relevant that transfers to by different type network with vehicle and road conditions;
Said car networking network is connected with said car networked information security module, car networking base station equipment and car network management module with transport module; Be used for different car networking network, routing policy, provide similar or the Network Transmission system of compatibility fully with corresponding network;
Said car networked information security module is connected with said car networking base station equipment and car working application module, and being used to the car connected network communication provides key management, authentication to maintain secrecy with what guarantee to transmit between each traffic entity; Also be used to provide safe route, data dissemination, in communication process, do not distorted, abandon or insert false data to guarantee data; Also be used to provide the time synchronized of location and location verification, safety;
Said car network management module is connected with said car networking base station equipment and car working application module, is used to administer and maintain networking information of vehicles, traffic information, in heterogeneous network, vertically switches and strides a layer resource management mechanism to realize vehicle; Also being used for coordinating the promising vehicle of car networking provides serving base station, machine-processed with the QoS of the seamless switching of realizing vehicle level between different base station and car connected network communication, and according to the information and the class of business of networking vehicle, the service of different priorities is provided;
Car networking base station equipment is connected, is used to provide session support, information support and the unified Applied layer interface of standard with car working application module;
Said car working application module is used to provide the car on-line customer interface of other non-safe or non real-time access reserve nets.
2. the car networking communication for coordination system based on relaying as claimed in claim 1, it is characterized in that: said car networking base station equipment comprises: one or more in WIMAX base station, WIFI access device, 2G base station and the NodeB.
3. the car networking communication for coordination system based on relaying as claimed in claim 1; It is characterized in that: said car network management module also comprises: with the switch unit of media independent; Be used to carry out data processing; And,, comprise the selection of wireless resource allocation, user access control, address administration, accurate location management, the switching between different base station and node for different access waies provide corresponding resource according to data business content.
4. the car networking communication for coordination system based on relaying as claimed in claim 1, it is characterized in that: said traffic entity comprises: transducer, vehicle, and car networking base station equipment.
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Application publication date: 20121010 |