Emergency data routing implementation method based on GPSR bus system

Abstract

The invention discloses an emergency data routing implementation method based on a GPSR bus system, and the method comprises the steps: dividing a bus line according to a road, constructing a two-layer architecture based on the road, and enabling the bus system divided according to the road to be more adaptive to a greedy forwarding strategy of the GPSR; and when the next-hop forwarding node is selected, performing forwarding by adopting a bus-based multi-mode greedy algorithm according to the characteristics of the bus, and processing a message queue of the vehicle node by adopting a multi-priority dynamic adjustment scheduling mechanism, so that emergency data can be processed preferentially. Compared with the prior art, the problem that a traditional two-layer architecture excessively depends on a bus system is solved, and the bus system is better combined with the GPSR; and a scheduling mechanism of multi-priority dynamic adjustment is provided, emergency data is processed preferentially, and rapid and reliable transmission of the emergency data is guaranteed.

Description

technical field [0001] The invention relates to the technical field of Vehicle Ad-hoc Network (VANET), in particular to a method for designing and implementing a routing protocol in the Vehicle Ad-hoc Network. Background technique [0002] VANET is an important branch of Mobile Ad-hoc Network. As a large-scale network with vehicles as network nodes, through Vehicle-to-Vehicle (V2V), Vehicle-to-Roadside Unit (V2R), Vehicle-to-Pedestrian (Vehicle-to- Person, V2P), vehicle-to-Internet (Vehicle-to-Network, V2N) and other real-time communication to achieve road safety, traffic efficiency and information services and other applications. However, due to the rapid movement of vehicles and frequent changes in network topology, the data generated by various applications may cause network congestion, packet loss and end-to-end delay. Especially when such emergency events as traffic accidents and road damage occur, it is necessary to ensure that such urgent data is reliably transmitte...

AI Technical Summary

Problems solved by technology

The existing problems are: the number of buses is much smaller than that of ordinary vehicles, and the interaction between public transportation systems has certain limitations. The completion of data transmission depends on the cooperation of different bus lines in the public transportation system. intersection point for interaction

In addition, the existing scheduling mechanism does not prioritize urgent data packets, so it cannot efficiently process urgent data in large-scale VANETs

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