CN104715600A - M2V transmission protocol-based real-time traffic data transmission system and method thereof - Google Patents

M2V transmission protocol-based real-time traffic data transmission system and method thereof Download PDF

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Publication number
CN104715600A
CN104715600A CN201310668886.2A CN201310668886A CN104715600A CN 104715600 A CN104715600 A CN 104715600A CN 201310668886 A CN201310668886 A CN 201310668886A CN 104715600 A CN104715600 A CN 104715600A
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China
Prior art keywords
communication module
vehicles
traffic data
host
mobile phone
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CN201310668886.2A
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Chinese (zh)
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廖少毅
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Hong Kong Productivity Council
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Hong Kong Productivity Council
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Priority to CN201310668886.2A priority Critical patent/CN104715600A/en
Publication of CN104715600A publication Critical patent/CN104715600A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/012Measuring and analyzing of parameters relative to traffic conditions based on the source of data from other sources than vehicle or roadside beacons, e.g. mobile networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/12Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

The invention discloses an M2V transmission protocol-based real-time traffic data transmission system and a method thereof. The system comprises at least two vehicles, or at least two mobile phones, or at least one vehicle and a mobile phone. The vehicle comprises a first WIFI communication module; the mobile phone comprises a third WIFI communication module; and traffic data are transmitted via the WIFI communication modules with built-in M2V protocol frameworks between the vehicles, between the vehicle and the mobile phone or between the mobile phones. When the system and the method of the invention are adopted, via the WIFI communication module with the built-in WIFIM2V transmission protocol, the traffic data with self movement speed and the position information acquired by the vehicles or the mobile phones are transmitted to other vehicles or mobile phones via the WIFI communication module, the traffic data are transmitted to a data center via the vehicles or the mobile phones via a mobile communication network, and the data can be applied to an intelligent traffic system.

Description

Based on traffic data real-time transmission system and the method thereof of M2V host-host protocol
Technical field
The present invention relates to wireless data transmission technology, particularly relate to a kind of traffic data real-time transmission system based on M2V host-host protocol and method thereof.
Background technology
In recent years, traffic congestion becomes one of problem of resident's major concern of living in city gradually.Although provide real time traffic data to be one of best method solving driving problem, collect the problems such as real time traffic data exists costly, data are inaccurate and imperfect at present.Meanwhile, carry out effective process to traffic-information service also to need by different special techniques.Want effectively to manage City road traffic system and just need complete set, reasonably solution, undertaken collecting traffic data by mobile communication system bring costly due to current, the data transmission technology therefore developing a kind of cheapness will be very necessary.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of traffic data real-time transmission system based on M2V host-host protocol and method thereof, make between the vehicles, between mobile phone or exchanged the traffic data of transport way road vehicles between the described vehicles and mobile phone by the WIFI communication module of built-in WIFI M2V host-host protocol (M2V protocol for WIFI); Send described traffic data to data center eventually through the described vehicles or mobile phone through mobile communications network, be beneficial to be applied in intelligent transportation system.
For achieving the above object, technical scheme of the present invention is achieved in that
Based on the traffic data real-time transmission system of M2V host-host protocol, comprise at least two vehicles, or at least two mobile phones, or at least one the vehicles and a mobile phone; The described vehicles comprise a WIFI communication module; Described case for mobile telephone is containing the 3rd WIFI communication module; Between the described vehicles and the vehicles, or between the described vehicles and mobile phone, or transmit traffic data by the WIFI communication module of built-in M2V protocol frame between described mobile phone and mobile phone.
Wherein, the described vehicles comprise first communication module, and described case for mobile telephone is containing third communication module; Described first communication module, third communication module all carry out real-time Data Transmission by cordless communication network and data center.
Described traffic data real-time transmission system also comprises the data center be connected by cordless communication network with mobile phone with the described vehicles, and described data center comprises second communication module, for receiving the real time traffic data sent by cordless communication network.
Described traffic data at least comprises speed information and the vehicle position information of the vehicles, and described positional information is longitude and latitude value.
Comprising information acquisition module in the described vehicles and mobile phone, sending to other vehicles or mobile phone again for the present speed of self and positional information being sent to built-in WIFI communication module; Or be sent to memory module and carry out storing and then select a good opportunity and send to other vehicles or mobile phone through WIFI communication module.
Described WIFI communication module, also for receiving the traffic data sent from other vehicles and mobile phone by WIFI M2V host-host protocol, and is preserved described traffic data in a storage module.
The described vehicles or mobile phone also include display module, for showing the content of described traffic data, and show the information content that described first communication module or third communication module send or receive.
Described data center comprises database, receives for storing described second communication module and separates the described traffic data read.
Described data center also comprises data processing module, for the packet that second communication module described in Real-Time Monitoring receives, and the traffic data separating reading from packet tested, classify, statistical treatment, and then the result after process to be preserved in a database.
Based on a traffic data method for real-time transmitting for M2V host-host protocol, comprising:
A, the startup vehicles or mobile phone, make first communication module or third communication module set up wireless data with the second communication module of data center and be connected;
B, by first information acquisition module or the 3rd information acquisition module by the vehicles or cellphone subscriber comprise current kinetic speed, the traffic data of positional information sends to described first communication module or third communication module;
C, by the vehicles or mobile phone by comprising current kinetic speed described in gathered, the traffic data of positional information is packaged into message Form generation packet by M2V protocol frame, and to be received by the WIFI communication module that a WIFI communication module or the 3rd WIFI communication module send other neighbouring vehicles or mobile phone to.
Traffic data real-time transmission system based on M2V host-host protocol provided by the present invention and method thereof, have the following advantages:
Because current real time traffic data can produce very high data traffic by mobile communications network transmission, meanwhile, the data charges of mobile Internet access also remains high always, therefore collects real time traffic data cost by mobile data too high.And the present invention adopts WIFI M2V host-host protocol (M2V protocol for WIFI), cost that then can be lower and cost, wireless communication module is utilized to access WIFI system to carry out collection and the exchange of traffic data, the data transmission of higher rate can be reached, thus, the inventive method is applied in intelligent transportation system there is wide usage space.
Accompanying drawing explanation
Fig. 1 is real-time collecting of the present invention and the network architecture schematic diagram transmitting highway traffic data;
Fig. 2 is 802.11 wireless frameworks, Internet protocol framework and M2V protocol frame schematic diagram of the present invention;
Fig. 3 is that the present invention utilizes described M2V host-host protocol to carry out highway traffic data collection and mutual system composition schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiments of the invention, method and system of the present invention are described in further detail.
Fig. 1 is real-time collecting of the present invention and the network architecture schematic diagram transmitting highway traffic data.As shown in Figure 1, this network architecture comprises the transport information Web server (Traffic Info Web Server) of accessing Internet network, location Based service (Location Based Service, LBS), Google Maps server, Maplink server; And the traffic information database (Traffic Information Database) to be connected with described transport information Web server (Traffic Info Web Server), described transport information Web server (Traffic Info Web Server) is also connected with described Maplink server, provides function based on web real-time performance osmaRender, Microsoft Map function and other maps.
In addition, the vehicles (as car, motorbus etc.) shown in Fig. 1 and cellphone subscriber, then by wireless universal traffic packets (GPRS), 3G or 4G network connecting Internet.And between the vehicles, between the vehicles and cellphone subscriber, and then wireless interconnected by WIFI mode between cellphone subscriber, namely realize data by WIFI M2V host-host protocol and mutually transmit.
Fig. 2 is 802.11 wireless frameworks, Internet protocol framework and M2V protocol frame schematic diagram of the present invention.As shown in Figure 2, WIFI M2V host-host protocol (M2V protocol for WIFI) allows mobile device mutually to transmit traffic data by WIFI.This agreement can well be applied in intelligent transportation system.
Generally say, M2V host-host protocol (M2V protocol for WIFI) includes 3 frameworks, 802.11 wireless frameworks (802.11 Wireless Frame) respectively, Internet protocol framework (Network Protocol Frame) and M2V protocol frame (M2V Protocol Frame).
Wherein, core frame is M2V protocol frame, and it forms primarily of header (Header) and message (Body).Specifically, effective traffic data carries mainly through message (Body), e.g., and date-time (Date Time), speed (Velocity), longitude (Longitude), latitude (Latitude) etc.Meanwhile, header (Header) mainly contain version (Version), agreement (Protocol), program number (app_id), figure number (map_id) etc.Here, described agreement (Protocol), defaults to " M2V ".
Below, above-mentioned 3 frameworks are analyzed one by one:
1) described 802.11 wireless frameworks (802.11 Wireless Frame), control (MAC), user data (User Data) and Cyclic Redundancy Check composition primarily of package (Preamble), physical layer convergence protocol (plcp), media interviews.
2) described Internet protocol framework (Network Protocol Frame), forms primarily of Internet Protocol (IP), transmission control protocol/User Datagram Protoco (UDP) (TCP/UDP) and data (Data).
3) described M2V protocol frame (M2V Protocol Frame), forms primarily of header (Header) and message (body).
Illustrate below and described M2V protocol frame is described in detail.
First, header (Header) part.The field of header stops to distinguish with comma (", "), such as " 1.0.0, M2V, 11,1 ".
Here, " 1.0.0 " is current version (Version) number; " M2V " is agreement (Protocol); " 11 " are program number (app_id); " 1 " is ground figure number (map_id), as map (arcgis), also can define other values and give google map or other map.
Secondly, message (Body) part.The field of message (Body) stops to distinguish with comma equally.
Such as, " 201105121212,30.25,144.123212,22.123123 ".Wherein, " 201105121212 " are date-time (DateTime), form: yyyyMMddHHmmss; " 30.25 " are speed (Velocity), unit: kilometer/hour, or meter per second; The longitude (Longitude) that " 144.123212 " are Current vehicle position; The latitude (Latitude) that " 22.123123 " are Current vehicle position.
Further, stop to distinguish with " $ " between different messages (Body), and need between message (Body) and header (Header) to separate by " # ".
Such as, the header (Header) of following M2V host-host protocol and 3 sections stop the messages (Body) distinguished with " $ ":
“1.0.0,M2V,11,1#201105121212,30.3,144.123212,22.123123$20110512141212,30.2,144.123212,22.123123$20110512121212,30.6,144.123212,22.123123”。
Fig. 3 is that the present invention utilizes described M2V host-host protocol to carry out highway traffic data collection and mutual system composition schematic diagram.This system mainly comprises the vehicles 1, data center 2, mobile phone (user) 3 and is the wireless base station that the vehicles 1, data center 2 and mobile phone (user) 3 provide wireless transmission access function.Wherein, described wireless base station can be the existing access point supporting the wireless data communication network of GPRS, 3G or 4G technology.The quorum sensing inhibitor vehicles 1 of described wireless base station (can have multiple) and mobile phone (user) 3.
Here, the quantity of the described vehicles 1 and mobile phone (user) 3 is at least one.Utilize M2V agreement, the vehicles and other vehicles can be realized, between mobile phone (user) and other mobile phones (user), and WIFI between the vehicles and mobile phone (user) is wireless interconnected, namely realize mutual data transmission by WIFI M2V host-host protocol.
1) vehicles 1, mainly comprise first communication module 10, GPS module 11, information acquisition module 12, display module 13 and WIFI communication module 14; Preferably, memory module 15 can also being comprised, for storing the traffic data collected by information acquisition module 12, and storing the traffic data receiving and send from other vehicles and mobile phone (user).Here, the described vehicles 1 include but not limited to motorbus, and the motor vehicles such as lorry, car, city electric car, motorcycle, also can comprise bicycle.
Described first communication module 10, for sending the traffic datas such as the present speed of the vehicles 1 and position to data center 2 in the mode of radio communication.First communication module 10, sends to the second communication module 20 of data center 2 with GPRS or other speed wireless data transfer technology by described traffic data.Described speed wireless data transfer technology, include but not limited to enhanced data rates for gsm evolution technology (EDGE, Enhanced Data Rate for GSM Evolution), high speed downlink packet access technology (HSDPA, High Speed Downlink Packet Access), the HSDPA technology of the CDMA (Code Division Multiple Access) (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access) of time division synchronous, CDMA2000 1X EV-DO technology and WCDMA.
Described GPS module 11, for receiving gps satellite signal and sending the traffic datas such as the current vehicle speed of the described vehicles 1 and positional information to described information acquisition module 12.Described positional information is longitude and latitude information mainly, can also comprise the information such as sea level elevation according to actual needs.
Described information acquisition module 12, for gathering the traffic data such as current vehicle speed and positional information of the vehicles 1, also can the automobile-used bus of junctor motor-car as required, gather the information such as current speed value, engine condition, gearbox state, fuel tank state etc. the even state of vehicle-mounted multimedia equipment of the vehicles, and described information is sent to first communication module 10 or be sent to preservation in memory module 15.
Here, described automobile-used bus, comprises LIN, CAN, system transfers (Media Oriented System Transport, MOST) bus etc. towards media.MOST bus supports the message transmission rate up to 24.8Mbps, M2V host-host protocol of the present invention, remains the ability of compatible following high speed data transfer, as, only need set up data field (Data) in message (Body), described high-speed data be encapsulated and gets final product (Fig. 2 is not shown).
Described display module 13, for showing the traffic data information that described information acquisition module 12 collects, the content also can transferring the traffic data stored in memory module 15 is as required checked.
Described WIFI communication module 14, for radioing to the WIFI communication module of other vehicles or mobile phone (user) in the mode of WIFI by M2V host-host protocol by traffic datas such as the present speed of the vehicles 1 and positions.WIFI communication module 14, is encapsulated in traffic data in M2V protocol frame, sends with the form of packet.
2) mobile phone (user) 3, both can utilize speed wireless data transfer agreement that the traffic datas such as the translational speed of the active user collected and positional information are sent to data center 2 in modes such as GPRS; M2V agreement can also be utilized, by collect or receive the traffic data that other vehicles or mobile phone (user) send and send other vehicles or mobile phone (user) to M2V protocol mode, realize mutual data transmission.
Wherein: described mobile phone (user) 3 mainly comprises third communication module 30, GPS module 31, information acquisition module 32, display module 33 and WIFI communication module 34; Preferably, memory module 35 can also being comprised, for storing the traffic data collected by information acquisition module 32, and storing the traffic data received from other vehicles and mobile phone (user) with WIFI M2V host-host protocol.
Here, the effect of described third communication module 30, GPS module 31, information acquisition module 32, display module 33 and communication module 34 and memory module 35, acts on similar with the first communication module 10 in the described vehicles 1, GPS module 11, information acquisition module 12, display module 13 and communication module 14 and memory module 15 respectively.Difference is only, the information acquisition module 32 in mobile phone (user) 3 does not have the function of the information such as the vehicle parameter gathering the vehicles.
In addition, third communication module 30 in first communication module 10 in the vehicles 1 and mobile phone (user) 3, all has the function traffic data in respective memory module 15 or memory module 35 being sent to data center 2 by GPRS or other high speed radio transmission technology.Data bus connection between memory module 15 and first communication module 10, and data bus connection between memory module 35 and third communication module 35 is not shown in figure 3.
3) data center 2 mainly comprises second communication module 20, database 21 and data processing module 22.Wherein:
Described second communication module 20, be mainly used in receiving the first communication module 10(of the vehicles 1 or receiving the third communication module 30 of mobile phone (user) 3) packet that sends, and the traffic data solution be encapsulated in described packet is read out stored in database 21.
Described data processing module 22, for the packet that second communication module described in Real-Time Monitoring 20 receives, and the traffic data separating reading from described packet tested, classify, the process such as statistics, then by process after result be kept in database 21, in order to inquiry, share etc. use.
Below by an embodiment, to utilizing the traffic data real-time transmission system based on M2V host-host protocol of the present invention to carry out, process that traffic data transmits in real time is briefly described.With reference to accompanying drawing 3, this process mainly comprises:
Step 201: start the vehicles 1 or mobile phone 3, make first communication module 10 or third communication module 30 set up wireless data with the second communication module 20 in data center 2 and be connected.
Step 202: the traffic data such as current kinetic speed, positional information of the vehicles or cellphone subscriber is sent to described first communication module 10 or third communication module 30 by information acquisition module 12 or information acquisition module 32.And,
Step 203: by the vehicles 1, the gathered traffic data comprising the contents such as current kinetic speed, positional information is packaged into message Form generation packet by M2V protocol frame, sends other neighbouring vehicles or the WIFI communication module of mobile phone to by WIFI communication module 14; Or,
Step 203 ': by mobile phone, the gathered traffic data comprising the contents such as current kinetic speed, positional information is packaged into message Form generation packet by M2V protocol frame, sends other neighbouring vehicles or cellphone subscriber to by WIFI communication module 34.
Step 204: after what the described vehicles or mobile phone received that other vehicles or mobile phone send comprise the packet of traffic data, can be temporarily stored in respective memory module, enter after mobile communications network service area until the described vehicles or mobile phone, then send to the second communication module 20 of data center 2 by respective first communication module 10 or third communication module 30.
Here, described packet, mainly comprises header (Header) and message (body) two parts, as shown in Figure 2.Wherein, message part can also enable extended field (not showing in Fig. 2) as required, to adapt to the senior application such as the MOST bus high speed transmission abilities of future on automobile.
Step 205: after second communication module 20 receives described packet, parses the traffic data in packet to be sent in database 21 and preserves.
Preferably, by the packet that second communication module 20 described in data processing module 22 Real-Time Monitoring receives, and the traffic data parsed from described packet tested, classify, the process such as statistics, and then by process after result be kept in database 21, in order to inquiry, share etc. use.Can also according to the monitoring situation of traffic data, to being necessary the vehicles 1 of intervening (as dispatched, sending a warning message), the content such as digitize voice or Word message can be issued by broadcast medium, to carry out traffic dispersion by this traffic information.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (10)

1. based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, comprise at least two vehicles, or at least two mobile phones, or at least one the vehicles and a mobile phone; The described vehicles comprise a WIFI communication module; Described case for mobile telephone is containing the 3rd WIFI communication module; Between the described vehicles and the vehicles, or between the described vehicles and mobile phone, or transmit traffic data by the WIFI communication module of built-in M2V protocol frame between described mobile phone and mobile phone.
2. the traffic data real-time transmission system based on M2V host-host protocol according to claim 1, it is characterized in that, the described vehicles comprise first communication module, and described case for mobile telephone is containing third communication module; Described first communication module, third communication module all carry out real-time Data Transmission by cordless communication network and data center.
3. the traffic data real-time transmission system based on M2V host-host protocol according to claim 2, it is characterized in that, described traffic data real-time transmission system also comprises the data center be connected by cordless communication network with mobile phone with the described vehicles, described data center comprises second communication module, for receiving the real time traffic data sent by cordless communication network.
4. the traffic data real-time transmission system based on M2V host-host protocol according to claim 1 or 3, it is characterized in that, described traffic data at least comprises speed information and the vehicle position information of the vehicles, described positional information is longitude and latitude value.
5. according to claim 1 or 2 based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, comprising information acquisition module in the described vehicles and mobile phone, sending to other vehicles or mobile phone again for the present speed of self and positional information being sent to built-in WIFI communication module; Or be sent to memory module and carry out storing and then select a good opportunity and send to other vehicles or mobile phone through WIFI communication module.
6. according to claim 1 based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, described WIFI communication module, also for receiving the traffic data sent from other vehicles and mobile phone by WIFI M2V host-host protocol, and described traffic data is preserved in a storage module.
7. according to claim 1 based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, the described vehicles or mobile phone also include display module, for showing the content of described traffic data, and show the information content that described first communication module or third communication module send or receive.
8. according to Claims 2 or 3 based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, described data center comprises database, for store described second communication module receive and separate read described traffic data.
9. according to claim 8 based on the traffic data real-time transmission system of M2V host-host protocol, it is characterized in that, described data center also comprises data processing module, for the packet that second communication module described in Real-Time Monitoring receives, and the traffic data separating reading from packet tested, classify, statistical treatment, and then the result after process to be preserved in a database.
10., based on a traffic data method for real-time transmitting for M2V host-host protocol, it is characterized in that, comprising:
A, the startup vehicles or mobile phone, make first communication module or third communication module set up wireless data with the second communication module of data center and be connected;
B, by first information acquisition module or the 3rd information acquisition module by the vehicles or cellphone subscriber comprise current kinetic speed, the traffic data of positional information sends to described first communication module or third communication module;
C, by the vehicles or mobile phone by comprising current kinetic speed described in gathered, the traffic data of positional information is packaged into message Form generation packet by M2V protocol frame, and to be received by the WIFI communication module that a WIFI communication module or the 3rd WIFI communication module send other neighbouring vehicles or mobile phone to.
CN201310668886.2A 2013-12-11 2013-12-11 M2V transmission protocol-based real-time traffic data transmission system and method thereof Pending CN104715600A (en)

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Application publication date: 20150617