| 面向Internet接入的WMN负载平衡路由策略 |
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| 作者姓名： | 胡云 杨寿保 郭晓雷 沈庆伟 |
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| 作者单位： | 1. 中国科学技术大学计算机科学与技术学院,合肥 230026;
2. 安徽建筑工业学院计算机工程系,合肥 230022 |
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| 基金项目： | 国家自然科学基金(60673172)、安徽省教育厅重点科研项目(KJ2007A053)和中国科学院研究生科技创新基金项目(KD2007048)资助 |
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| 摘 要： | 在面向Internet接入无线Mesh网络(WMN)中,数据流在Mesh一侧的传输具有汇聚特性,终点大都为网关,因此最后一跳无线链路成为了WMN的瓶颈;同时不平衡的数据转发导致局部性能过低,也加剧了网络容量的低效问题. 提出基于层次模型的路由转发策略,该路由策略通过平衡因子控制上层节点负载的均衡,从而提高WMN整体网络容量. 仿真结果表明,采用层次化路由策略使得整体网络容量比HWMP提高了近20%,管理帧开销降至HWMP的40%.
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| 关 键 词： | 无线Mesh网络 路由协议 负载均衡 层次化模型 |
| 收稿时间： | 2009-09-01 |
| 修稿时间： | 2009-11-02 |
Load-balanced routing strategy for Internet-accessing oriented WMN |
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| Authors: | HU Yun YANG Shou-Bao GUO Xiao-Lei SHEN Qing-Wei |
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| Institution: | 1. School of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;
2. Department of Computer Engineering, Anhui Institute of Architecture and Industry, Hefei 230022, China |
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| Abstract: | Mesh Gateways are destinations of data flows in Internet-accessing oriented WMN. The last-hop wireless links become bottleneck of WMN. Un-balanced data forwarding leads to lower capacity of the whole network, because it makes lower performance for some local areas. A new routing forwarding based on layer model is proposed in this paper. This strategy insures balance for upper-layer nodes using a balance factor. Capacity of whole WMN enhances accordingly. Simulation results indicate that compared with HWMP the layer routing can enhance the network capacity above 20% and management frame overhead is down to 40%. |
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| Keywords: | wireless Mesh network routing protocol load balance layer model |
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