Study Of High-Frequency Ad Hoc Network Based On Token Ring

The high frequency self-organizing network which is widely used in emergencies and disaster has the characteristics of wide communication range and strong anti-destructive ability.The high frequency self-organizing token ring protocol is a media access control protocol applied for wireless high frequency communication,which is developed from the wireless token ring protocol.The high frequency token ring protocol stipulates the networking process of nodes.The fairness and non-competition of the protocol make sure that network data is conflict-free and has a certain self-healing ability,which can guarantee network performance.In this paper,the high frequency token ring protocol is first studied in detail.The protocol mainly controls the nodes by means of finite state machines and timers.As for the possible redundant relay problems in the transmission sequence during the protocol networking process,a joint optimization algorithm based on Floyd and genetic algorithm is proposed to optimize the high frequency token ring network.The algorithm reorganizes the transmission sequence to obtain the least relay transmission sequence,which effectively improves the network throughput and the delay characteristic of the original networking algorithm.Secondly,based on the analysis and research of the possible interference problems in the high frequency token ring networking process,the problems of hidden nodes,lost tokens,multi-tokens,ring collisions,and lost ring master nodes are solved.Two potential problems of access interference are mentioned and the corresponding anti-interference strategy are given to enhance the anti-interference ability of the network.Then,the OPNET network simulation software is used to simulate the high frequency token ring networking process.The characteristics of the ring token transfer times,network throughput and delay are analyzed.The joint optimization algorithm is verified to reduce the number of relays.The experimental results show that the optimization algorithm improves network throughput and reduces latency.The proposed anti-jamming strategy also effectively prevents potential interference attacks.Finally,we use the VC platform to establish a small high frequency token ring network.First,the feasibility of the software program is tested by means of a local area network,and then the hardware device is used to verify the networking process.The mail system is used to verify the data transmission function of the network.Interference and anti-jamming tests are conducted to meet the requirements of basic network stability.