Routing Protocol Design Method Based on Link Quality and Node Forwarding Capability

Abstract

The invention discloses a routing protocol design method based on link quality and node forwarding capacity. The problems that in an existing routing protocol based on the geographic position, data grouping end-to-end transmission path selection is low in efficiency, consequently, the data grouping delivery rate is small, and network throughput is small are solved. The realizing scheme includes the steps that parameters which are related to node quality and include the motion direction, the distance, the link quality and internal forwarding capacity are calculated; then, candidate adjacent node set selection and node priority ranking are conducted through a screening mechanism and a weighting algorithm; based on a candidate adjacent node set and node priority information, an opportunity forwarding strategy is executed on data grouping. On the premise of ensuring acceptable data grouping end-to-end delay, the delivery rate of data packages and the network throughput are increased. The routing protocol design method can be applied to communication among vehicles in car networking, effective information exchange among the vehicles is achieved, and safety and efficiency of vehicle traffic are improved.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a path selection method for end-to-end transmission of data packets in a vehicle ad hoc network, which can be applied to vehicle-to-vehicle communication in a vehicle ad hoc network to realize real-time and effective information between vehicles interaction to improve the safety and efficiency of vehicle traffic. Background technique [0002] At present, the self-organizing network of vehicles, referred to as the Internet of Vehicles, has emerged in many application fields such as traffic safety, traffic efficiency, and social entertainment. To realize the above-mentioned various applications, the Internet of Vehicles is a data interaction network composed of automobiles, and the end-to-end transmission of data packets is inevitable, which further involves the key technology of routing protocol design. There are two types of routing protocols in wireless ad hoc netw...

AI Technical Summary

Problems solved by technology

When the higher-level priority node fails to forward the data packet, the lower-level priority node can immediately forward the data packet. However, in the timer mode, it must wait for the timer backoff to complete before starting, which prolongs the The time delay for successful message transmission

To a certain extent, this timer mode is relatively safe and reliable, but this reliability is realized on the basis of sacrificing a large delay, which is intolerable for the transmission of urgent messages

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