Method for vehicle-mounted Ad Hoc network based on improved AODV (Ad Hoc Ondemand Distance Vector) protocol

Abstract

The invention discloses a method for a vehicle-mounted Ad Hoc network based on an improved AODV (Ad Hoc Ondemand Distance Vector) protocol. The method comprises the following steps that (1) at a route discovery stage, when a source node has data to transmit to a destination node, an RREQ (Route Request) message is produced and transmitted to an adjacent node, and the node which receives the RREQ message can keep on transmitting the RREQ message only when meeting the stability condition; (2) at a route selection state, the destination node selects a route with maximal route expiration time from multiple routes as a relatively stable route, and replies an RREP(Route Reply) message; and (3) at a data transmission stage, after receiving the RREP message, the source node selects the relatively stable route to carry out data transmission. Due to the adoption of the technical scheme, the control overhead in the vehicle-mounted Ad Hoc network can be reduced, and the router reliability and the data transmission success rate are improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for a vehicle-mounted Ad Hoc network based on an improved AODV protocol. Background technique [0002] With the rapid development of communication field and computer field, inter-vehicle communication has become an important research topic. The functions of automobiles are constantly enriched, and they are developing toward diversification and integration. A car is not just a means of transportation, but an electronic tool that integrates comfort, entertainment, office and service. At the same time, with the development of the automobile industry and the popularization of private cars, driving safety and road traffic accidents have become global public safety issues. How to improve vehicle road safety through the increasingly developed wireless communication network has become the focus of attention and research in the industry. For this reason, the vehicle Ad Ho...

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Problems solved by technology

[0005] After searching the prior art documents, it was found that Vinod Namboodiri et al published a paper titled "A Study on the Feasibility of Mobile Gateways for Vehicular Ad-hoc Networks on the Proceedings of the 1st ACM International Workshop on Vehicular Ad-hoc Networks, VANET, 2004". (Feasibility Study on Mobile Gateway of Vehicle-mounted Ad Hoc Network)" paper, proposed a strategy of selecting a better route for data transmission, but did not take into account issues such as control overhead; OmidAbedi et al. in "29th IEEE International Conference on Distributed Computing Systems Workshops, 2009" published in the paper entitled "Improving Route Stability and Overhead on AODV Routing Protocol and Make it Usable for VANET (improving routing stability and overhead for the AODV routing protocol of the vehicle Ad Hoc network)", proposed the RREQ messages are sent to edge nodes to reduce overhead, but there is no in-depth research on factors such as stable route selection and delay

From the related research mentioned above, it can be seen that there is still no good solution for the improvement and application of the AODV protocol in the vehicle Ad Hoc network, so how to improve the control method based on the AODV protocol to better apply to the vehicle Ad Hoc network Hoc network is an important research topic

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