Method and system for achieving aeronautical network MAC (multiple access control) protocols

Abstract

The invention discloses a method for achieving aeronautical network MAC protocols. The method comprises 1) according to the number of known neighbor nodes, a node broadcasts an access request opening message when the number of the neighbor nodes is greater than a threshold value n; 2) after receiving the access request opening message, every neighbor node sends an access request message to a communicated hop node before service data are transmitted; 3) after receiving the access request message and accurately decoding the access request message, the communicated hop node replies an access request confirmation message in a next frame of access response to inform neighbor nodes allowing transmission; 4) after receiving the access request confirmation message, the neighbor nodes enter service data transmitting processes. The invention also discloses a system for achieving the aeronautical network MAC protocols. The system for achieving the aeronautical network MAC protocols comprises a distributed access request processing module. The method and system for achieving the aeronautical network MAC protocols can maintain the numbers of single nodes and hop nodes simultaneously, ensure network stability and maintain network service amounts within a reasonable level.

Description

technical field [0001] The invention belongs to the wireless self-organizing network technology of avionics information, and is a method for realizing the media access control (MAC) protocol based on multi-service QoS guarantee for the high-load aviation data link networking environment, which is applied to the aviation wireless data link group net field. technical background [0002] As the future development direction of aviation collaborative data link, Aeronautical Ad Hoc Network (AANET) creatively applies mobile ad hoc network to aviation aircraft, so that it can distribute ground command information and air perception information to each other. All nodes in the aeronautical ad hoc network have equal status and share the same wireless transmission channel. The role of the MAC layer in network layering is to control multiple nodes to use limited wireless channel resources reasonably and efficiently. The quality of the MAC protocol directly affects the quality of system...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems faced by the aviation wireless networking MAC protocol design, such as the differentiated requirements for multi-type service channel competition capabilities, high access delay index requirements, and high collision probability when the business load is high, the purpose of the present invention is to provide a method that realizes aviation autonomous traffic. The method of networking MAC protocol, and the system for realizing the method, optimize the network service transmission performance through the distributed access request judgment mechanism and the QoS guarantee backoff mechanism, and improve the utilization rate of the shared channel of the whole network

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