MR-OLSR:多天线多信道无线Mesh网络中一种链路状态路由算法  

MR-OLSR:A LINK STATE ROUTING ALGORITHM IN MULTI-RADIO MULTI-CHANNEL WIRELESS MESH NETWORKS

作　　者：张超钦[1] 马江涛[2] 胡光武[3] 

机构地区：[1]郑州轻工业学院计算机通信与工程学院,河南郑州450002 [2]郑州轻工业学院国际教育学院,河南郑州450002 [3]清华大学计算机科学与技术系,北京100084

出　　处：《计算机应用与软件》2014年第8期108-112,共5页Computer Applications and Software

基　　金：河南省教育厅科学技术研究重点项目(12A120010)

摘　　要：对Ad Hoc网络下的OLSR算法进行改进,提出多天线多信道无线网状网下一种优化的链路状态路由算法MR-OLSR,使得数据流可以在多路径上并行传输,实现拥塞避免和提高信道利用率的目的。利用改进的IWCETT测量尺度算法对多路径链路质量予以测量,同时根据路径质量提出的信道分配策略和多路径策略选择算法使得整体网络具有负载均衡的特性。在OPNET模拟器上实现了算法,结果表明该算法在保持原算法鲁棒性和可扩展性的同时,进一步增强了单链路失效时的稳定性和可靠性,提高了网络的吞吐率。In this paper,we improve the optimised link state routing（OLSR） protocol in ad hoc network and propose an optimised link state routing algorithm in multi-radio multi-channel wireless mesh network（MR-OLSR）,which makes the data flow transmit on multi-path in parallel and reaches the goal of congestion prevention and channels utilisation improvement. We further use the measurement scale algorithm of improved weighted cumulative estimated transmission time（IWCETT） to measure the quality of multi-path links,meanwhile the proposed channel allocation strategy and multi-path selection policy based on paths＇ quality enable the whole networks to possess the characteristic of load balance. This routing algorithm is implemented in OPNET simulator,and the results illustrate that it maintains the robustness and scalability of the original scheme,and at the same time further enhances the stability and reliability in single link failure as well as keeps the throughput of the network.

关 键 词：无线网状网 多天线 多信道 多路径 链路状态路由 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]