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Vehicle-mounted IOT (Internet of Things) routing method on basis of geographical positions

A vehicle-mounted Internet of Things and geographic location technology, which is applied in the direction of data exchange network, nan, digital transmission system, etc., can solve the problem of intermittent connectivity and achieve the effect of improving network throughput

Inactive Publication Date: 2012-11-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0010] To sum up, the routing protocol of the vehicular IoT proposed above is only suitable for one of the two network scenarios based on a connected network or a disconnected network. needs

Method used

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  • Vehicle-mounted IOT (Internet of Things) routing method on basis of geographical positions
  • Vehicle-mounted IOT (Internet of Things) routing method on basis of geographical positions
  • Vehicle-mounted IOT (Internet of Things) routing method on basis of geographical positions

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Embodiment Construction

[0030] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0031] This part will describe in detail the geographical location-based vehicle Internet of Things routing method in conjunction with the above-mentioned drawings. The specific implementation of each part included in this method is as follows:

[0032] figure 1 It is the state transition relationship among the three forwarding modes of data packets, which will be described in three parts below.

[0033] (1) The algorithm flow chart executed when the node receives the data packet in the greedy mode, such as figure 2 shown.

[0034] Step 1: All data packets are initially in the greedy mode, and the "CHECK" flags of all vehicle nodes are initialized to zero. When a vehicle node receives a data packet in greedy mode, it queries its neighbor list. If there is a neighbor node that is closer to the destination than itself, "CHECK" is still s...

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Abstract

The invention relates to a vehicle-mounted IOT (Internet of Things) routing method on the basis of geographical positions. Forwarding modes of data packets are divided into three types, i.e. a greedy mode, a non-periodic detection edge mode and a periodic detection edge mode. The data packets are all in the greedy mode at the beginning; in the transmission process of the data packets, according to relative positions of vehicles, road information and comparison of vehicle running directions, state conversion of the data packets among the three types of forwarding modes is determined and the data packets are judged whether to be transmitted to a next hop or continuously stored and carried; and the data packets are transmitted to a destination by a plurality of paths so as to improve the delivery rate of the data packets. The vehicle-mounted IOT routing method is on the basis of two network scenes of mixed communication and non communication so as to meet the vehicle-mounted IOT with intermittent connectivity; the vehicle-mounted IOT routing method is more suitable for the real urban traffic network environment; when the network throughput is improved, the excessive network congestion cannot be generated; and the vehicle-mounted IOT routing method is suitable for network application with high requirement for the data delivery rate, but low requirement for the transmission delay.

Description

technical field [0001] The invention relates to a routing selection method applied to the Internet of Vehicles of Things, belongs to the technical field of Internet of Things communication, and is suitable for large-scale, self-organizing, high-speed movement and complex environment of Vehicle-mounted Internet of Things. Background technique [0002] The vehicle-mounted Internet of Things is a special non-central mobile ad hoc network established through wireless connections between vehicles equipped with wireless network sensor equipment or between vehicles and infrastructure equipment on both sides of the road. In-vehicle IoT systems enhance road traffic safety and ensure occupant comfort by integrating wireless sensor devices or roadside infrastructure with vehicles. As an emerging network, the idea of ​​the vehicle-mounted Internet of Things is to provide users with ubiquitous connections, so that users can connect to the outside world through other networks during drivi...

Claims

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Application Information

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IPC IPC(8): H04W4/04H04W40/20H04L29/08H04L12/56
Inventor 李凡赵磊李平王昱
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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