基于跨层设计的无线网络通信多媒体传输技术研究

Research on Wireless Network Communication Multimedia Transmission Technology Based on Cross-layer Design

针对无线网络通信在数据分组传送阶段存在的通信冗余问题,提出了一种新颖的网络编码和跨层设计相结合的高效路由算法,以根据各种服务质量约束混合网络吞吐量。文章开发了一种基于NC的启发式链路控制路由树算法,以减少所需的中间节点的数量。该算法通过新颖的跨层设计,有利于优化无线组播速率、无线链路数据流、能量供应和节点寿命。最后设计实验对提出的算法进行验证,结果表明,所提出的方案可以较为明显地提高整个无线传感器网络的通信性能。

In order to solve the problem of communication redundancy in the data packet transmission phase of wireless network communication,a novel efficient algorithm combining network coding and cross layer design is proposed to constrain the hybrid network throughput according to various quality of service,for example:Wireless multicast rate,wireless link capacity,energy supply and network lifetime.Specifically,an NC-based heuristic link control routing tree algorithm was developed to reduce the number of intermediate nodes required.The algorithm facilitates optimization of wireless multicast rates,wireless link data streams,energy supply and node lifetime through a novel cross-layer design.Finally,the design experiment verifies the proposed algorithm.The results show that the proposed scheme can significantly improve the communication performance of the entire wireless sensor network.