Transportation information publishing and retrieving method based on named data networking (NDN)

A traffic information and data naming technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as unfavorable vehicle node movement

Inactive Publication Date: 2017-07-07
BEIJING UNIV OF TECH
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Problems solved by technology

[0007] (2) Mobile problem
In the Internet, IP has dual semantics. It not only represents the host, but also represents the physical location of the network. If the node mov

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  • Transportation information publishing and retrieving method based on named data networking (NDN)

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Embodiment Construction

[0026] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0027] see figure 1 , a method for publishing and retrieving traffic information based on a data naming network, the specific steps are as follows:

[0028] (1) Suggested data naming mechanism: Divide the name into five basic layers. The five basic layers are city area name, road name segment, information type, time period, and user ID; for the data naming network, A reasonable data naming mechanism is the basis for its efficient information forwarding and retrieval. For example, the five basic layers are "Beijing Chaoyang District / South Section of Xidawang Road / Road Repair / 8:00—9:00 / Beijing VNDN0368", where the time segment is the time when the data was generated; the first four layers are for the convenience of users to retrieve information, while user ID is designed to ensure information security, and at the same time ensure the uniqueness of ...

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Abstract

The invention discloses a transportation information publishing and retrieving method based on named data networking (NDN). The method comprises the following specific steps: recommending a data naming mechanism: names are partitioned into five basic layers; publishing transportation information: a source vehicle node forwards a generated data packet to the periphery, and vehicle nodes receiving the data packet cache the data packet and continually forward the data packet outwards in a broadcasting way; and retrieving the transportation information: a requester vehicle node transmits an interest packet outwards, and returns the data packet according to a naming prefix matching rule of the NDN. According to the transportation information publishing and retrieving method based on an NDN mechanism without any central server in a VANET (Vehicular Ad-hoc Network), vehicles in a whole network are self-organized, and each vehicle node plays the roles of a producer, a consumer and a forwarder, so that the vehicles can forward and cache information through the NDN mechanism, and vehicle drivers can rapidly and efficiently inquire relevant transportation information of a certain geographical position through other vehicles without the assistance of the central server used in a conventional mode.

Description

technical field [0001] The invention relates to the technical field of traffic information publishing, in particular to a method for publishing and retrieving traffic information based on a data naming network. Background technique [0002] With the rapid development of modern transportation and the automobile industry, the number of automobiles in my country has increased sharply. Frequent traffic accidents, increasingly serious traffic jams, and users' strong Internet access requirements have jointly promoted the intelligent transportation system ITS (Intelligent Transportation System). System) development. In order to provide applications such as improving road safety and improving traffic efficiency, and to meet the needs of drivers for traffic information, traffic information publishing and retrieval applications emerged as the times require. [0003] Under the current TCP / IP network architecture, vehicles need to be equipped with sensors and communication devices, whic...

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Application Information

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IPC IPC(8): H04L29/08G06F17/30
CPCH04L67/12G06F16/9537H04L67/52H04L67/63
Inventor 张丽孙增旺潘庆超
Owner BEIJING UNIV OF TECH
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