| As a new type of mobile wireless communication network,Ad Hoc network does not rely on basic station,and has attracted extensive attention in military communication field due to its strong invulnerability and practicability.This paper researches and implements the key technologies of DSDV-based ad hoc network terminals,including the simulation of key technologies of terminals,the overall software solutions of VxWorks design terminals,the actual development on embedded platforms,and the comparison of results in hardware terminals to simulation platforms.This paper mainly completes the following parts:Firstly,in order to verify the key technologies of the ad hoc network terminal,this thesis builds the key technology simulation platform of the ad hoc network,including the simulation of the terminal node and network topology.The average route generation and node fluctuation of the simulated terminal are tested and analyzed.Average route generation time and end-to-end average delay performance indicator.Then,combined with the characteristics of real-time operating system,this thesis designs a cross-layer protocol stack for key technologies in ad hoc network terminals.Based on the ad hoc protocol,the mechanism of distribution and priority queue,WFQ-based congestion management,error control and response retransmission is designed and implemented.Guaranteed reliable ad hoc network communication,and optimize the implementation of embedded DSDV algorithm through fluctuation suppression strategy and timer linked list and timeout callback mechanism.Finally,the terminal system is actually built on the hardware development board to verify the availability and reliability of the ad hoc network terminal.The comparison between pure software simulation and simulation of accessing hardware terminals proves that the implementation of the key technologies of the ad hoc network terminal proposed in this paper meets the requirements of technical indicators and has practical application. |
