Internet of Vehicles cross-layer routing method based on interference awareness

A vehicle networking and routing technology, applied in the field of intelligent transportation, can solve the problems of poor network adaptability, unstable wireless network wireless resources, inflexible layered structure protocol, etc., to ensure reliable transmission, improve transmission efficiency and reliability, The effect of improving the transmission success rate

Active Publication Date: 2017-10-24
TONGJI UNIV
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Problems solved by technology

[0005] In the traditional mobile communication system, the layered network structure is widely used, but in the face of unstable wireless

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  • Internet of Vehicles cross-layer routing method based on interference awareness
  • Internet of Vehicles cross-layer routing method based on interference awareness
  • Internet of Vehicles cross-layer routing method based on interference awareness

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0039] This embodiment provides a cross-layer routing method for the Internet of Vehicles based on interference perception. The method includes: 1) the source node sends a routing request broadcast through an on-demand routing mechanism to obtain all possible paths from the source node to the destination node; 2) the source node The node determines an optimal path according to the routing response data packets returned by the destination node along all possible paths, and the routing response data packets are generated based on the interference-aware evaluation method. The logic flow ...

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Abstract

The invention relates to an Internet of Vehicles cross-layer routing method based on interference awareness. The Internet of Vehicles cross-layer routing method based on interference awareness includes the steps: a source node sends routing request broadcast through an on-demand routing mechanism to obtain all the possible paths from the source node to a target node; after the target node receives the routing request broadcast, from the target node, a route response data packet is sent to the last hop of node along each possible path, wherein the route response data packet carries SIR (Signal To Interference) fields; the source node determines whether the final route response data packet is received, and if so, the path having the maximum SIR field in the received route response data packet as the optimum path; and each node of the optimum path periodically updates the local maximum SIR value and exchanges the available service channel. Compared with the prior art, the Internet of Vehicles cross-layer routing method based on interference awareness evaluate the channel quality through SIR calculation, fully considers the interference level caused by the neighbor nodes, can guarantee the reliability of an active channel through periodical detection, and can effectively improve the data packet transmission success rate.

Description

technical field [0001] The invention relates to intelligent transportation technology in the Internet of Vehicles, in particular to a cross-layer routing method for the Internet of Vehicles based on interference perception. Background technique [0002] With the rapid development of modern automobile industry technology and wireless communication technology, the communication mode of the Internet of Vehicles is gradually becoming a reality. Information exchange between vehicles and the outside world (Vehicle to X, V2X), including Vehicle to Vehicle (V2V), vehicle The frequent short-range communication between Vehicle to Infrastructure (V2I) and Vehicle to Person (V2P), together with the long-distance communication between vehicles and the network, together constitute the overall framework of the Internet of Vehicles. The purpose of vehicle-to-vehicle communication is to improve road traffic safety and improve driving efficiency. The Internet of Vehicles has very strict requ...

Claims

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Application Information

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IPC IPC(8): H04W40/10H04W40/12H04W40/16H04W40/20
CPCH04W40/10H04W40/12H04W40/16H04W40/20Y02D30/70
Inventor 郭爱煌费凡
Owner TONGJI UNIV
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