Research On AODV Routing Algorithm Based On Information Interaction And Adaptive Node Assignment

ZigBee is widely used in smart street lighting because of its low power consumption,flexible networking and high security of data transmission.However,too many nodes can lead to network blockage.In this thesis,the AODV routing protocol is improved to address the three aspects of security,optimal path and wireless self-assembly requirements,and the improved routing protocol is applied to the smart street light system.The main contents of this thesis are:(1)For the AODV routing protocol security and shortest path problems,the thesis proposes a study of the TAODV routing protocol improved on the original AODV routing protocol using the trust mechanism model approach.The protocol proposes a trust value calculation model that calculates the trust value of each node accordingly,while introducing trust degrees and resistance strategies to common internal attacks.In summary,the trust value on each path is determined and a shortest path is found.The experimental results show that compared to the traditional AODV routing protocol,the improved TAODV routing protocol reduces the normalized routing overhead by 20.2%,the minimum hop count by 76.2%and the optimal path by 73.8%.(2)The D-TAODV routing protocol based on Dijkstra’s algorithm is proposed and simulated for the TAODV routing protocol overhead,hop count and shortest path problems.The Dijkstra algorithm is used to search for the shortest path from the source node to the target node in a multi-hop relay within the wireless sensor network,while combining the best-first search to find the whole network thoroughly.Compared to the TAODV routing protocol,the D-TAODV routing algorithm transmits shorter paths and its convergence performance slows down the energy consumption of the nodes in the network.Experimental results show that the improved D-TAODV routing protocol reduces the normalized routing overhead by 26.6%,the minimum hop count by 13.6%and the optimal path by 2.7%compared to the TAODV routing protocol.(3)To address the application of ZigBee technology in the smart street light system,the overall architecture of the ZigBee-based self-organizing network smart street light system is proposed,and the circuit structure of the core module is designed.In order to test the hardware performance,the ZigBee wireless self-assembling network experimental platform was built to test the networking of the terminal nodes of the smart street light,and the improved D-TAODV routing protocol was applied to the networking process.The experimental results show that after the mesh networking with the ZigBee wireless communication module designed in the paper,the network stability is good,the communication data transmission is smooth,and the packet loss rate is reduced by 0.15%.