摘要
在无线网状网中,为使AODV(Ad hoc On-demand Distance Vector routing)路由协议支持流间编码并解决流间编码带来的负载不均衡问题,提出了一种优化的路由策略CLAODV(Coding-aware and Load balanced AODV)。该策略允许编码节点的多个下游节点共同解码同一个编码包,以增加路径上的编码机会。同时,设计了一个可以同时体现路径上编码增益、路径丢包率以及路径负载程度的新路由度量参数(Expected Coding-aware Transmission Count and Load balancing,ECTXL)。CLAODV路由策略可根据该参数进行路由选择。仿真结果表明:与其他相关路由策略相比,文中提出的CLAODV路由策略不仅能有效增加路径的编码机会,提高网络吞吐量,而且可以明显降低路由时延与带宽资源开销。
In wireless mesh,this paper proposed an optimized routing strategy Coding-aware and Load balanced AODV(CLAODV).The strategy can not only enable the AODV routing protocol to support inter-stream coding,but also solve the load imbalance problem caused by inter-stream coding.The proposed strategy allows multiple downstream nodes of coding node to jointly decode the same coded packet to increase the coding opportunities on the path.A new routing metric parameter ECTXL,which can simultaneously reflect the coding gain,path packet loss rate and the path load le-vel,was designed.The CLAODV strategy can be routed based on this parameters.The simulation results show that the proposed CLAODV routing strategy can increase the path coding opportunities effectively,improve the network throughput,and significantly reduce the routing delay and bandwidth resource overhead compared with other related routing strategies.
作者
王振朝
宋伯尧
白莉莎
WANG Zhen-chao;SONG Bo-yao;BAI Li-sha(College of Electronic Informational Engineering,Hebei University,Baoding,Hebei 071002,China;Key Laboratory of Digital Medical Engineering of Hebei Province,Baoding,Hebei 071002,China)
出处
《计算机科学》
CSCD
北大核心
2018年第10期99-103,共5页
Computer Science
基金
河北省自然基金项目(F2014201168)资助
