A Distributed Adaptive Switching Method of Routing Protocol Based on Network Context Awareness

Abstract

The invention belongs to the technical field of communication routing or path selection, and discloses a distributed adaptive switching method of a routing protocol based on network context awareness, including: a node periodically obtains its own network state information (occupancy rate of MAC layer cache queue group, link Route disconnection rate), realize local network state awareness by interacting state information packets with one-hop neighbor nodes; design routing protocol switching criteria according to prior knowledge and utility function; according to perceived local network state information, use routing The protocol switching criterion selects the appropriate routing protocol in the current situation; adopts the compatibility design between different routing protocols to ensure the normal communication between different protocols. The present invention makes full use of the advantages of the existing table-driven routing protocols and on-demand routing protocols, and through the perception of the network situation and the adaptive routing protocol switching, the delivery rate of data packets can be improved and the overhead of routing protocols can be reduced.

Description

technical field [0001] The invention belongs to the technical field of communication routing or path selection, and in particular relates to a distributed adaptive switching method of a routing protocol based on network context awareness. Background technique [0002] At present, the commonly used existing technologies in the industry are as follows: in wireless communication, a distributed network is an autonomous network composed of a group of mobile nodes dynamically connected through wireless links without the need for network infrastructure. Nodes in the network are mobile, and the topology of the network is constantly changing. Since network scenarios are changing dynamically, routing protocol design is particularly critical at this time. Traditional routing protocols, such as table-driven routing protocols and on-demand routing protocols, are designed for a specific network environment. The table-driven routing protocol is suitable for the network with slow node mov...

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Problems solved by technology

[0003] However, the existing adaptive routing protocol switching technology still has the following problems: in the design of the adaptive routing protocol, the existing technology still has an imperfect network situation awareness mechanism, unclear routing protocol switching criteria, and communication continuity during the switching process cannot be guaranteed.

On the one hand, these problems will lead to the inability to perceive changes in the network situation in a timely manner, resulting in inaccurate switching or switching delays, and on the other hand, the inability to communicate between different routing protocols, resulting in data being transmitted packet loss

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