CN107682908A - A kind of roadside access device - Google Patents

A kind of roadside access device Download PDF

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Publication number
CN107682908A
CN107682908A CN201710815803.6A CN201710815803A CN107682908A CN 107682908 A CN107682908 A CN 107682908A CN 201710815803 A CN201710815803 A CN 201710815803A CN 107682908 A CN107682908 A CN 107682908A
Authority
CN
China
Prior art keywords
vehicle
address
cluster head
roadside access
request
Prior art date
Application number
CN201710815803.6A
Other languages
Chinese (zh)
Inventor
王小绪
王力
董豪
陈庆
Original Assignee
南京中高知识产权股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京中高知识产权股份有限公司 filed Critical 南京中高知识产权股份有限公司
Priority to CN201710815803.6A priority Critical patent/CN107682908A/en
Publication of CN107682908A publication Critical patent/CN107682908A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements or network protocols for addressing or naming
    • H04L61/20—Address allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/12—Network-specific arrangements or communication protocols supporting networked applications adapted for proprietary or special purpose networking environments, e.g. medical networks, sensor networks, networks in a car or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/26—Push based network services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Abstract

Roadside access device provided by the invention has pre-saved available address section, the address configuration of new networking vehicle can be directly realized by, multiple roadside access devices constitute transport layer, and there are two cluster head nodes to work simultaneously, and it is active and standby each other, it thus it can be prevented that the interruption of communication；And roadside access device has used SIMO model, and the transmission that reserved passageway is used for emergency data is provided with, thereby ensures that control centre can effectively obtain the emergence messages such as road exception or traffic accident, be easy to timely processing.

Description

A kind of roadside access device

Technical field

The present invention relates to smart machine field, and in particular to a kind of roadside access device.

Background technology

Vehicle, road, pedestrian and roadside equipment are integrated an organic whole by car networking technology, to provide vehicle peace Entirely, traffic control, information service, linking Internet etc. are applied.It is final to improve traffic efficiency, reduce traffic accident, lifting road The traffic capacity, improve community service.Communicated between vehicle by roadside access device, be then communicated to corresponding to base station or Control centre, roadside access device have provided the user relay services so that user can timely obtain information needed.

In order to obtain required service, user's vehicle obtains firstly the need of being linked into network from base station or control centre Mailing address, and then the establishment of network is realized, and the setting of communication path.And existing address acquisition mode it is ageing compared with Difference, moreover, roadside access device only realizes the forwarding effect of data, cause the wasting of resources.

The content of the invention

For problems of the prior art, in order to improve networks trategy, the resource of roadside access device is effectively utilized, The present invention proposes a kind of new roadside access device, and applied in the system with Hierarchical network structure.

A kind of roadside access device provided by the invention, it is characterised in that：The roadside access device is received from vehicle Network request, the address section pre-saved according to it, judges the legitimacy of address, is directly accessed if legal, otherwise, root According to the available address section pre-saved, address is distributed for vehicle, networking step is performed to vehicle；

After vehicle networks, the roadside access device pushes information needed according to the request of user to user；Monitor vehicle simultaneously Driving information, wherein, driving information include cross-line, bring to a halt, vehicle-state；

Wherein, the address section that the roadside access device pre-saves includes the available address section distributed base station and can with this With the adjacent address section of address section, the roadside access device can be directly realized by the address configuration of new networking vehicle；When sentencing When disconnected vehicle address is in the adjacent address section, then it is the vehicle that networked to judge the vehicle, is legal vehicle, can be straight Tap into row data interaction；

Wherein, networking step includes：It is strong according to the speed of vehicle, direct of travel, signal after the networking for receiving vehicle is asked Degree, the time Estimate positioned at present road, coverage density, current up-downgoing data traffic, node credibility, calculate cluster head node Weight, the higher cluster head node of weight is selected to add, wherein, the time Estimate positioned at present road is according to direct of travel road Vehicle flowrate, the number of signal lamp, track speed limit are determined；Current uplink and downlink data traffic estimation is according to vehicle in road Solicited message, which calculates, to be obtained；Node credibility is the flow and abnormal ratio correctly transmitted；

Wherein, cluster head node selection step includes：The respective load of roadside access device calculating, signal intensity, surrounding environment are made an uproar The accuracy that sound and dependability parameter, abnormal vehicle judge obtains respective weights and broadcasted, according to where determining the weights The success rate that first cluster head and the second cluster head in section, wherein dependability parameter are sent using downlink data thereon represents；First Cluster head, the second cluster head work simultaneously, and active and standby each other, realize that request is handled, when one of cluster head breaks down, another cluster The first processing that will continue request；

The roadside access device uses SIMO model, and has reserved passageway, when receiving emergency data, is connect according to roadside Signal intensity, load and the confidence level for entering equipment select available roadside access device, and urgent number is realized using reserved passageway According to transmission.

Roadside access device provided by the invention has pre-saved available address section, can be directly realized by new networking car Address configuration, while adjacent address section is preserved, thus, it is possible to cause the car with the address in the adjacent network segment Without carrying out the access of network again, directly using original address, pass through the roadside access device and ask information needed；And And in the present invention, multiple roadside access devices constitute data forwarding layer, and are worked with two cluster head nodes simultaneously, and mutually To be active and standby, the interruption of communication thus it can be prevented that；Furthermore roadside access device provided by the invention has used SIMO model, And be provided with the transmission that reserved passageway is used for emergency data, thereby ensure that control centre can effectively obtain road it is abnormal or It is the emergence messages such as traffic accident, is easy to timely processing.

Brief description of the drawings

Fig. 1 is implementation procedure flow chart of the present invention.

Embodiment

The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.

A kind of roadside access device provided by the invention, it is applied a kind of with the network system of hierarchical structure. Wherein, the network system of the hierarchical includes the key-course being made up of control centre, the transport layer being made up of roadside access device And the client layer being made up of vehicle.Control centre realizes the processing of the request of data of user, and pushes and subscribe to user Information, broadcast message etc., and available address section is issued for the roadside access device in transport layer according to road section information, wherein, The road section information includes length, the vehicle flowrate size estimation of road（It can be counted and obtained according to historical data）, so that configuration Address section can ensure the access of vehicle；Transport layer realizes user data requests and subscription information, broadcast message etc. Forwarding, while handle user networking request, according to control centre distribute available address section for user configuration communicatively Location.

In transport layer, as shown in Figure 1：Roadside access device receives the networking request from user's vehicle, pre- according to its The address section first set, judge the legitimacy of address, be directly accessed if legal, otherwise, according to the address pre-set Section, address is distributed for vehicle, and networking step is performed to vehicle.

The roadside access device pre-save the available address section that control centre issues and with the available address area Between adjacent address section, the roadside access device can be directly realized by the address configuration of new networking vehicle；When with judging vehicle When location is in the adjacent address section, then it is the vehicle that networked to judge the vehicle, can directly carry out data interaction；By This, the roadside access device can realize the configuration of station address, additionally it is possible to by the judgement to address, determine that user is original Whether address can use, if available be directly accessed, the address configuration process of network be thereby reduced, when reducing the networking of user Between, improve Consumer's Experience.If present road vehicle flowrate is larger, during no available address, then user-network access request is being received Afterwards, the request is forwarded to control centre, in order to realize the configuration of address.

After vehicle networks, the roadside access device pushes information needed according to the request of user to user；Monitor simultaneously The driving information of vehicle, wherein, driving information includes cross-line, brought to a halt, vehicle-state.

Wherein, networking step includes：After the networking for receiving vehicle is asked, according to the speed of vehicle, direct of travel, letter Number intensity, the time Estimate positioned at present road, coverage density, current up-downgoing data traffic, node credibility, calculate Cluster head node weight, the higher cluster head node of weight is selected to add, because in transport layer, each section has two cluster heads, Therefore, user's vehicle and the speed of vehicle, travel direction, signal intensity, is located at when networking, it is necessary to select suitable cluster head The current up-downgoing data traffic of time Estimate, coverage density, node of present road, node credibility can ensure to select Cluster head provide the user reliable service, ensure the stability of data transfer.

Wherein, the time Estimate positioned at present road is according to the vehicle flowrate of direct of travel road, the number of signal lamp, track Speed limit is determined；The vehicle flowrate in track is divided into less, normal, crowded three states, and counted according to actual conditions Vehicle maximal rate under three kinds of states；Then the time is determined according to the number of signal lamp, link length and above-mentioned the max speed Estimation；Current uplink and downlink data traffic estimation calculates according to the solicited message of vehicle in road to be obtained；Node credibility is correct The flow of transmission and the ratio of abnormal flow.

In order to ensure the stability of transport layer data transmission, in cluster head node selection course, set according to the access of each roadside The accuracy that standby load, signal intensity, ambient noise and dependability parameter, abnormal vehicle judge, selects the first cluster The success rate that first and the second cluster head, wherein dependability parameter are sent using downlink data thereon represents；First cluster head, the second cluster head It is active and standby each other, realize that request is handled jointly, when one of cluster head breaks down, processing that another cluster head will make requests on； Abnormal vehicle refers to the vehicle for Traffic Anomaly occur.The setting of active and standby cluster head can be handled effectively request, and different Chang Shi, without reselecting cluster head, ensure the stability of communication.

The roadside access device uses SIMO model, and has reserved passageway, when receiving emergency data, according to road Signal intensity, load and the confidence level of side access device select available roadside access device, are realized using reserved passageway tight The transmission of anxious data.The setting of reserved passageway causes vehicle when sending exception, traffic accident, can timely be transferred to control Center, in order to which control centre sets control strategy in time and broadcasts so that other users carry out road choosing according to broadcast message Select.

Judge when receiving vehicle request, in addition to the validity of user's request, when judging that request is effective, The legitimacy of address is judged again.I.e. roadside access device is carried out effective according to the broadcast message of cluster head node to the request received Sex determination, when judging that vehicle request comes from illegal vehicle, then prevent the access of the vehicle.

Wherein, illegal vehicle is that abnormal flow of the base station in network is judged, and notifies cluster head node, that is, is judged predetermined In period, the vehicle that the number for causing Traffic Anomaly is exceeded to predetermined value is defined as illegal vehicle.

Roadside access device provided by the invention has pre-saved available address section, can be directly realized by new networking car Address configuration, while adjacent address section is preserved, thus, it is possible to cause the car with the address in the adjacent network segment Without carrying out the access of network again, directly using original address, pass through the roadside access device and ask information needed；And And in the present invention, multiple roadside access devices constitute data forwarding layer, and are worked with two cluster head nodes simultaneously, and mutually To be active and standby, the interruption of communication thus it can be prevented that；Furthermore roadside access device provided by the invention has used SIMO model, And be provided with the transmission that reserved passageway is used for emergency data, thereby ensure that control centre can effectively obtain road it is abnormal, The emergence message such as traffic accident, violating the regulations, is easy to timely processing.

The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this A little simple variants belong to protection scope of the present invention.

Claims (3)

1. a kind of roadside access device, it is applied in the car networking system with hierarchical, it is characterised in that：
The roadside access device receives the networking request from vehicle, the address section pre-saved according to it, judges address Legitimacy, it is directly accessed if legal, otherwise, according to the available address section pre-saved, address is distributed for vehicle, to car Perform networking step；
After vehicle networks, the roadside access device pushes information needed according to the information request of user to user；Monitor simultaneously The information of vehicle, wherein, driving information includes cross-line, brought to a halt, vehicle-state；
Wherein, the address section that the roadside access device pre-saves includes the available address section distributed base station and can with this With the adjacent address section of address section, the roadside access device can be directly realized by the address configuration of new networking vehicle；When sentencing When disconnected vehicle address is in the adjacent address section, then it is the vehicle that networked to judge the vehicle, is legal vehicle, can be straight Tap into row data interaction；
Wherein, networking step includes：It is strong according to the speed of vehicle, direct of travel, signal after the networking for receiving vehicle is asked Degree, the time Estimate positioned at present road, coverage density, current up-downgoing data traffic, node credibility, calculate cluster head node Weight, the higher cluster head node of weight is selected to add, wherein, the time Estimate positioned at present road is according to direct of travel road Vehicle flowrate, the number of signal lamp, track speed limit are determined；Current up-downgoing data traffic estimation according in road vehicle please Ask information to calculate to obtain；Node credibility is the ratio of the flow and abnormal flow correctly transmitted；
Wherein, cluster head node selection step includes：The respective load of roadside access device calculating, signal intensity, surrounding environment are made an uproar The accuracy that sound and dependability parameter, abnormal vehicle judge obtains respective weights and broadcasted, according to where determining the weights The success rate that first cluster head and the second cluster head in section, wherein dependability parameter are sent using downlink data thereon represents；First Cluster head, the second cluster head work simultaneously, and active and standby each other, realize that request is handled jointly, when one of cluster head breaks down, separately One cluster head will continue the processing of request；
The roadside access device uses SIMO model, and has reserved passageway, when receiving emergency data, is connect according to roadside Signal intensity, load and the confidence level for entering equipment select available roadside access device, and urgent number is realized using reserved passageway According to transmission；
Judge when receiving vehicle request, in addition to the validity of user's request, when judging that request is effective, then sentence The legitimacy of disconnected address.
2. roadside access device as claimed in claim 1, it is characterised in that：The available address preserved in the roadside access device Section is that control centre is issued according to road section information by broadcast message, wherein, road section information includes the length of road, vehicle flowrate Size estimation.
3. roadside access device as claimed in claim 1, it is characterised in that：Roadside access device is according to the broadcast of cluster head node The request that information butt joint receives carries out availability deciding, when judging that vehicle request comes from illegal vehicle, then prevents the access of the vehicle.
CN201710815803.6A 2017-09-10 2017-09-10 A kind of roadside access device CN107682908A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929483A (en) * 2006-09-19 2007-03-14 清华大学 Admittance control method for IPv6 switch-in network true source address access
CN101600156A (en) * 2009-06-03 2009-12-09 南京邮电大学 A kind of auto-allocation method of addresses of mobile ad hoc networks
CN103781148A (en) * 2014-02-25 2014-05-07 重庆邮电大学 Stable clustering routing method based on link perception in vehicle-mounted self-organizing network
CN104794883A (en) * 2014-01-22 2015-07-22 华为技术有限公司 Taxi calling method and device
CN106297295A (en) * 2016-09-26 2017-01-04 湖北双可智能工程有限公司 Driving service platform based on intelligent parking

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929483A (en) * 2006-09-19 2007-03-14 清华大学 Admittance control method for IPv6 switch-in network true source address access
CN101600156A (en) * 2009-06-03 2009-12-09 南京邮电大学 A kind of auto-allocation method of addresses of mobile ad hoc networks
CN104794883A (en) * 2014-01-22 2015-07-22 华为技术有限公司 Taxi calling method and device
CN103781148A (en) * 2014-02-25 2014-05-07 重庆邮电大学 Stable clustering routing method based on link perception in vehicle-mounted self-organizing network
CN106297295A (en) * 2016-09-26 2017-01-04 湖北双可智能工程有限公司 Driving service platform based on intelligent parking

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