CN203522799U - Vehicle-mounted communication system based on WAVE - Google Patents
Vehicle-mounted communication system based on WAVE Download PDFInfo
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- CN203522799U CN203522799U CN201320553380.2U CN201320553380U CN203522799U CN 203522799 U CN203522799 U CN 203522799U CN 201320553380 U CN201320553380 U CN 201320553380U CN 203522799 U CN203522799 U CN 203522799U
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Abstract
The utility model discloses a vehicle-mounted communication system based on WAVE. The vehicle-mounted communication system based on WAVE comprises a first external device, a second external device, a WAVE protocol stack, expansion interfaces, road-side units and on-chip units arranged in a vehicle. The first external device, the road-side units, the WAVE protocol stack, the expansion interfaces, the on-chip units and the second external device are connected orderly, and the road-side units, the on-chip units and the WAVE protocol stack are connected to form a WAVE standard coverage area. The vehicle-mounted communication system is based on the WAVE, creates a vehicle ad hoc network which is wide in coverage range, supports the multimedia information at a high quality level and is safe, and is easier to arrange, is lower in cost, and accords with a business model better.
Description
Technical field
The utility model relates to a kind of Vehicular communication system based on WAVE.
Background technology
In recent years, universal along with auto industry, the surge of Car ownership, congested day by day serious of road, the taking place frequently of traffic accident, and the continuing to bring out of mobile unit of all kinds, the research in vehicle-carrying communication field has caused that people pay close attention to greatly.Traditional vehicle communication network is only aimed at the closed communication network of the purposes designs such as highway charging conventionally, thereby development recently makes vehicle support workshop autonomous communication intercommunication security information.But due to the defect aspect the network architecture, original system can only provide the information interaction in regional area to the vehicle in running at high speed, and cannot realize vehicle and intelligent transportation control centre and carry out Real-time Data Service and access band wireless network.Angle from automobile wireless access technology, the current communication technology of most vehicle mobile communication network research based on IEEE 802.11, but 802.11 have that coverage is little, need in vehicle mobile process frequent switch connect roadside unit, service quality (QoS) is provided by weakness weak, that cannot provide high-quality to support to multimedia messages.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of wide coverage, high-quality and supports multimedia messages, safety and easily deployment, the Vehicular communication system based on WAVE cheaply.
For addressing the above problem, the utility model adopts following technical scheme: a kind of Vehicular communication system based on WAVE, comprise unit on the sheet of installing on the first external device (ED), the second external device (ED), WAVE protocol stack, expansion interface, roadside unit and vehicle, on described the first external device (ED), roadside unit, WAVE protocol stack, expansion interface, sheet, unit is connected successively with the second external device (ED), and on described roadside unit, sheet, unit and WAVE protocol stack connect into WAVE standard overlay area.
As preferably, described the first external device (ED) is connected with roadside unit by expansion interface; Described the second external device (ED) is connected with unit on sheet by expansion interface.
As preferably, go up unit for described and be connected with roadside unit by WAVE protocol stack.
The beneficial effect of the Vehicular communication system of the utility model based on WAVE is: because described Vehicular communication system has adopted WAVE, create wide coverage, high-quality and supported the automobile self-organized network of multimedia messages, safety, and more easily dispose, cost is also lower, more meets the angle of business model.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the Vehicular communication system of the utility model based on WAVE.
Fig. 2 is the structure chart of WAVE protocol stack in the Vehicular communication system of the utility model based on WAVE.
Embodiment
Refer to shown in Fig. 1 to Fig. 2, the utility model adopts following technical scheme: a kind of Vehicular communication system based on WAVE, comprise unit on the sheet of installing on the first external device (ED), the second external device (ED), WAVE protocol stack, expansion interface, roadside unit and vehicle, on described the first external device (ED), roadside unit, WAVE protocol stack, expansion interface, sheet, unit is connected successively with the second external device (ED), and on described roadside unit, sheet, unit and WAVE protocol stack connect into WAVE standard overlay area.
Described the first external device (ED) is connected with roadside unit by expansion interface; Described the second external device (ED) is connected with unit on sheet by expansion interface.Described upper unit is connected with roadside unit by WAVE protocol stack.
Macroscopic view, the communication mode of WAVE, mainly comprises the communication between vehicle and vehicle, the communication between vehicle and roadside unit, and the communication between vehicle and portable equipment.On the sheet of installing on vehicle between unit, on sheet, between unit and pedestrian, form small-sized wireless ad-hoc network, complete the mutual of the information such as safety, amusement; On sheet, unit can also be connected with networks such as the Internet, mobile communications network, WLAN (wireless local area network) in wired or wireless mode by roadside unit, completes the exchange of information.Module in WAVE mainly comprises unit on sheet, roadside unit and WAVE protocol stack.OBU based on embedded processing unit (unit on the sheet of installing on automobile), is equivalent to the STA in 802.11 networks, i.e. mobile terminal in communication system, and different OBU are the difference of communication mode and frequency; RSU (roadside unit) is equivalent to the AP in 802.11, is mainly responsible for the access of board units, and interconnected with other networks.In the situation that there is no roadside unit, on the sheet of installing on vehicle, between unit, form mobile vehicular ad hoc network network; Roadside unit is communicated by letter with unit by using WAVE protocol stack on sheet, thereby completes the reciprocal process of application message.
WAVE standard has adopted the protocol infrastructure based on 802.11, reaches the higher traffic rate of acquisition and larger transmission range, and the object merging better with existing Internet and mobile communications network.WAVE standard is made the V2V safe and feasible more that becomes of communicating by letter with V2I by a series of service and interface by standardization, and also the application (comprising vehicle safety, automatic charging, enhanced navigation and traffic administration etc.) for wider model under vehicle environment provides the foundation.
WAVE protocol stack is divided into management plane and datum plane (as Fig. 2), IETF:Internet engineering duty group; LLC: logic is controlled; MAC: media access control; MLME:MAC layer management entity; PHY: physical layer; PLME: PLME; WME:MAVE management entity; WSMP:WAVE short-message protocol.Management plane is responsible for parameter and the behavior of protocol stack and is controlled, and datum plane is responsible for secured transmission of payload data information.802.11p has defined physical layer and MAC layer; 1609.4 have defined a kind of MAC strengthens mechanism, provide multi-channel collaboration function so that only have the equipment of a reception antenna can make full use of physical layer channel (control channel, service channel), can provide for the message of high priority more real-time transmission service simultaneously; 1609.3 have defined the transport services of WAVE, and have stipulated function and the primitive of MAC layer management entity (MLME) and WAVE management entity (WME); 1609.2 have formulated the security mechanism in WAVE, and the functions such as encryption, authentication and privacy are provided; In 1609.1 be remote application management, registration and OBU equipment, storage and the access of resource provide standardized interface.
WAVE is divided into service providing device (PD:ProviderDevice) and subscriber equipment (UD:UserDevice) two classes communication equipment, and the operational process of WAVE is as follows:
(1) PD starts, and the WAVE information on services (WSA) of going on the air, has opened a WAVE Basic Service Set (WBSS).In WSA, carried such as using channel, the information of the operation parameter etc. of which application program, each application program is provided.This process is equivalent to broadcast in 802.11 the process of Beacon information.
(2) when entering PD, UD provides behind the region of WBSS, receive the information WSA of PD broadcast, according to stored secret key decryption WSA, and analysis configuration information wherein, judge whether to match with the configuration information of oneself, if coupling adds in this WBSS, and according to the configuration information configuration relevant parameter in WSA, as frequency of utilization and channel etc.
(3) between PD and UD, set up a communication link, now, no longer included dividing of PD and UD, PD and UD transfer equity service (P2P pattern) to, between them, start equality exchange data information, and be no longer one can only photos and sending messages, the pattern of another breath of can only collecting mail.
(4), when equipment determines to exit this WBSS, to the management entity of protocol stack, send instruction indication and exit WBSS; Or, in equipment Inspection when not at this WBSS, by bottom management entity to the asynchronous notice of upper layer application.So far the communication between ISP and user ends
The beneficial effect of the Vehicular communication system of the utility model based on WAVE is: because described Vehicular communication system has adopted WAVE, create wide coverage, high-quality and supported the automobile self-organized network of multimedia messages, safety, and more easily dispose, cost is also lower, more meets the angle of business model.
The above, be only embodiment of the present utility model, but protection range of the present utility model is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claims were limited.
Claims (3)
1. the Vehicular communication system based on WAVE, it is characterized in that: comprise unit on the sheet of installing on the first external device (ED), the second external device (ED), WAVE protocol stack, expansion interface, roadside unit and vehicle, on described the first external device (ED), roadside unit, WAVE protocol stack, expansion interface, sheet, unit is connected successively with the second external device (ED), and on described roadside unit, sheet, unit and WAVE protocol stack connect into WAVE standard overlay area.
2. the Vehicular communication system based on WAVE according to claim 1, is characterized in that: described the first external device (ED) is connected with roadside unit by expansion interface; Described the second external device (ED) is connected with unit on sheet by expansion interface.
3. the Vehicular communication system based on WAVE according to claim 1, is characterized in that: described upper unit is connected with roadside unit by WAVE protocol stack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320553380.2U CN203522799U (en) | 2013-09-07 | 2013-09-07 | Vehicle-mounted communication system based on WAVE |
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| CN201320553380.2U CN203522799U (en) | 2013-09-07 | 2013-09-07 | Vehicle-mounted communication system based on WAVE |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225484A (en) * | 2015-09-29 | 2016-01-06 | 深圳市金溢科技股份有限公司 | A kind of data processing method of Intelligent Transportation Terminal, terminal and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225484A (en) * | 2015-09-29 | 2016-01-06 | 深圳市金溢科技股份有限公司 | A kind of data processing method of Intelligent Transportation Terminal, terminal and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LIU HONGYU Free format text: FORMER OWNER: LI TUOBIN Effective date: 20150114 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315708 NINGBO, ZHEJIANG PROVINCE TO: 518000 SHENZHEN, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150114 Address after: Nanshan District Shahe road 518000 Shenzhen city in Guangdong province Shenzhen Bay Garden 6-24C Patentee after: Liu Hongyu Address before: 315708 Xiangshan, Zhejiang, Xiangshan, Hong Kong Road, No. 13, No. Patentee before: Li Tuobin |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Hongyu Inventor before: Li Tuobin |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI TUOBIN TO: LIU HONGYU |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20160907 |