Design And Implementation Of Dynamic Routing Protocol Based On Multi-factor Forwarding

With the rapid development of economy and information technology,the Internet demand of dynamic mobile devices such as airships,unmanned aerial vehicles,ships and vehicles in the field of sky and ocean have become more and more intense,and dynamic networks have become more and more popular.Dynamic network is a self-organizing network with strong time-varying network topology and significant dynamic characteristics of nodes.Conventional network protocols have been unable to adapt to dynamic scenarios,and the protocol design of dynamic ad hoc network is facing new challenges.Therefore,it is of great significance for scientific research and social value to design network protocols that are suitable for dynamic networks.In this thesis,the theory combined with the actual,a novel routing protocol suitable for high dynamic scenario is researched and implemented to the embedded system platform.Starting from the typical scenario of dynamic network—unmanned surface vehicle scenario,this thesis analyzes its networking requirements,mobile model and business characteristics,studies the strategies and influencing factors in the process of Routing and Forwarding,then proposes a novel Dynamic Routing based on Multi-factor Forwarding(MF-DR).This protocol designs a greedy algorithm with dynamic prediction mechanism based on geographic information,proposes neighborhood area connectivity parameters in forwarding decision,improves the known link evaluation method,and finally integrates multi-factor parameters to complete the design of dynamic routing algorithm.At the same time,MF-DR protocol also provides a solution for routing and forwarding failure--carry forwarding within a limited time.Then,relevant simulation scenarios are built on the network simulation platform NS2.35 to verify and analyze the performance of the designed routing protocol.The simulation results in different scenarios show that under the premise of certain routing overhead,the packet delivery rate and average end-to-end delay of MF-DR protocol are greatly improved compared with LSGO and Xlin GO,but the overhead has been increased by simulation.Analysis shows that the routing overhead is within an acceptable range.Therefore,in high dynamic scenarios,the MF-DR protocol has better network performance.Besides the theoretical research of routing design and simulation in dynamic network scenarios,this thesis also designs and implements the networking platform.Specifically,based on the above-mentioned MF-DR routing protocol,we build dynamic ad hoc network architecture and the platform needed for networking system.Moreover,the networking system is implemented in the embedded networking system according to the designed routing protocol.In this thesis,based on the MF-DR protocol proposed above,the dynamic ad hoc network architecture and the platform required by the networking system are firstly built.Then,the corresponding dynamic networking system platform was developed and realized through the Linux embedded platform,and the high dynamic routing protocol MFDR was embedded and combined with the MAC protocol for networking.After the relevant networking system prototype is developed,the system is tested and verified to verify the performance and functionality of the networking system platform.Through the field test,the experimental data prove that the dynamic networking system has better stability and availability,and show that the networking system adopting the above dynamic network protocol can effectively curb the deterioration of network performance caused by the dynamic characteristics.