A Directed Broadcast Routing Method in Two-way Lane with Heterogeneous Communication Radius
A communication radius and directional broadcast technology, applied in the field of vehicle network, can solve problems such as high overhead, high delay, and channel congestion
Inactive Publication Date: 2017-03-08
北京航空航天大学深圳研究院
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Problems solved by technology
[0006] In order to solve the problem of directional broadcast routing in traditional two-way lanes under the heterogeneous communication radius, when the vehicle-mounted nodes are densely populated, the overhead is high, the delay is high, and the channel congestion is serious, and the vehicle-mounted nodes are sparse, accident messages are lost, which in turn causes routing failure. The present invention provides A directional broadcast routing method in two-way lanes under heterogeneous communication radius, which overcomes the deficiencies of existing technologies, and achieves the goals of small overhead, short delay, and rapid and wide spread of accident messages
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[0086] The symbols of the present invention are defined as follows:
[0087] The information carried by the vehicle node with the identification number VID in the vehicle network is expressed as and Indicates the basic information of the vehicle node whose identification number is VID; VID indicates the identification number of the vehicle node; LOC VID ={X VID ,Y VID} represents the geographic location of the vehicle node whose identification number is VID; VMD VID Indicates the moving direction of the vehicle node whose identification number is VID; CR VID Indicates the communication radius of the vehicle node whose identification number is VID; CR VID ∈[CR min ,CR max ];CR min Indicates the minimum communication radius of the vehicle node, which is 100m according to the empirical value; CR max Indicates that the maximum communication radius of the vehicle node is 1000m;
[0088] Indicates the geographic location of the vehicle node whose identification n...
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The invention relates an orientated broadcast routing method in bidirectional lanes under the heterogeneous communication radius. The method comprises the steps that 1) a vehicle node periodically broadcasts self state information; 2) the vehicle node receives state information from other vehicle nodes; 3) the vehicle node detects a message of an accident occurring in the lane where the vehicle drives, and the accident message is broadcasted to the direction opposite to the moving direction of the vehicle; 4) after receiving the accident message of the other vehicle node, the vehicle node judges whether the accident message has been received; if yes, further broadcast of the accident message is canceled; and if no, time before the accident message is broadcasted is calculated in a broadcast storm inhibition method, and the accident message and the before-broadcast time are added into a to-be-broadcasted accident message list; and 5) when the before-broadcast time of any accident message in the to-be-broadcasted accident message list of the vehicle node reaches the time of a present vehicle node, the accident message is broadcasted, and is deleted from the to-be-broadcasted accident message list.
Description
technical field [0001] The invention relates to a directional broadcast routing method in a two-way lane, more particularly, a directional broadcast routing method in a two-way lane under a heterogeneous communication radius, and belongs to the field of vehicle network technology. Background technique [0002] The vehicle-mounted network is a mobile ad-hoc network composed of a large number of sensor nodes equipped with perception, data processing, storage and wireless communication capabilities loaded on the vehicle nodes. And the transmission of various information in urban areas, its advantages are reflected in the wide coverage achieved due to the mobility of vehicle nodes, expanding the scope and depth of information acquisition, while simplifying large-scale network deployment. The vehicular network has the characteristics of high-speed movement of vehicular nodes, limited storage space, and regular movement of vehicular nodes. The vehicle network has a wide range of ...
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IPC IPC(8): H04W40/02
Inventor 殷传涛高洋吕仁宾韩晓辉蒲菊华熊璋
Owner 北京航空航天大学深圳研究院