摘要
Wireless Mesh Network （WMN） is seen as an effective Intemet access solution for dynamic wireless applications. For the low mobility of mesh routers in WMN, the backbone topography can be effectively maintained by proactive routing protocol. Pre-proposals like Tree Based Routing （TBR） protocol and Root Driven Routing （RDR） protocol are so centralized that they make the gateway becorre a bottleneck which severely restricts the network performance. We proposed an Optimized Tree-based Routing （OTR） protocol that logically separated the proactive tree into pieces. Route is partly computed by the branches instead of root. We also discussed the operation of multipie Intemet gateways which is a main issue in WMN. The new proposal lightens the load in root, reduces the overhead and improves the throughput. Numerical analysis and simulation results confirm that the perforrmnce of WMN is improved and OTR is more suitable for large scale WMN.
Wireless Mesh Network (WMN) is seen as an effective Internet access solution for dynamic wireless applications. For the low mobility of mesh routers in WMN, the backbone topography can be effectively maintained by proactive routing protocol. Pre-proposals like Tree Based Routing (TBR) protocol and Root Driven Routing (RDR) protocol are so centralized that they make the gateway become a bottleneck which severely restricts the network performance. We proposed an Optimized Tree-based Routing (OTR) protocol that logically separated the proactive tree into pieces. Route is partly computed by the branches instead of root. We also discussed the operation of multiple Internet gateways which is a main issue in WMN. The new proposal lightens the load in root, reduces the overhead and improves the throughput. Numerical analysis and simulation results confirm that the performance of WMN is improved and OTR is more suitable for large scale WMN.
基金
Acknowledgements This paper was supported by the Major National Science and Technology program under Grant No. 2011ZX03005-002
the National Natural Science Foundation of China under Grant No. 61100233
the Fundamental Universities under Grant No Research Funds for the Central K50510030010.
作者简介
Ji Wenjiang, is currently a Ph.D. candidate of Xidian University, Xi＇an, China. His research in- terests include wireless networking, routing pro- tocols, information security and network simulation. Email： wenj_ji@ 163.comMa Jianfeng, is a professor and Ph.D. supervisor in the School of Computer Science at Xidian University, Xi＇an, China. His current research interests include infortmtion and network Security, cryptography. E-mail： jfma@mail. xidian.edu.cn
