tailieunhanh - Báo cáo hóa học: " Hidden node aware routing method using highsensitive sensing device for multi-hop wireless mesh network"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Hidden node aware routing method using highsensitive sensing device for multi-hop wireless mesh network | Parvin and Fujii EURASIP Journal on Wireless Communications and Networking 2011 2011 114 EURASIP Journal on http content 2011 1 114 Wireless Communications and Networking a SprlngerOpen Journal RESEARCH Open Access Hidden node aware routing method using high-sensitive sensing device for multi-hop wireless mesh network Shamsad Parvin and Takeo Fujii Abstract Throughput maximization is one of the main challenges in multi-hop wireless mesh network WMN . Throughput of the multi-hop WMN network seriously degrades due to the presence of the hidden node. In order to avoid this problem we use a combination of the high-sensitive sensing function and beacon signalling at the routing. The purpose of this sensing function is used to avoid the hidden node during route formation in the self flow. This function is considered to construct a route from the source node to the destination node without any hidden node. In the proposed method high-sensitive sensing device is utilized in both route selection and in the media access. The accuracy of our proposed method is verified by numerical analysis and by computer simulations. Simulation results show that our proposed method improves the network performance compared with the conventional systems which do not take account of the hidden node. 1 Introduction Wireless Mesh Networks WMN are emerging as a new attractive communication paradigm owing to their low cost easy maintenance and rapid deployment. The application scenarios for WMN include wireless broadband internet access intelligent transportation systems transient networks in convention centers and disaster recovery. In WMNs nodes are comprised mesh routers and mesh clients 1 . Wireless mesh routers are interconnected as a multi-hop backbone to provide mesh clients network access. As shown in Figure 1 among all mesh routers some have client connectivity mesh access points and some have internet gateway capability. The mesh backbone then supports multi-hop