Node-disjoint Multipath Routing Based on Gateway Support in Wireless Access Networks

• Main Authors: Jung-Kuang Tsai, 蔡榮光
• Other Authors: Ge-Ming Chiu
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/03980431508538463745

碩士 === 國立臺灣科技大學 === 資訊工程系 === 94 === Multipath routing can reduce the effort of route discoveries, the overall routing overhead and the average end-to-end delay by providing alternative routes between communicating sources and destinations in the MANET. With multipath mechanism data traffic can be split into multiple routes to avoid congestion and to use network resources efficiently. Although there has been much research effort being devoted to the design of multipath routing mechanisms, for MANETs they are not tailored to in wireless access networks. In this thesis, we propose an on-demand multipath routing that can adapt to the wireless access network. Unlike MANETs, in wireless access network, most traffic is imposed upon downlink channels from the gateway. In addition, the gateway has rich route information. In the thesis, we propose a multipath routing that relies on the collaboration between the gateway which perform the route selection scheme and the mobile node that initiate the route discovery operation. Our approach can restrain efficiently the control packet by utilizing the routing cache in the intermediate nodes. According to the gateway information, we then establish the node-disjoint multipath that can adapt to the dynamics of the network. Extensive simulations are performed to evaluate the performance of our mechanism. We also compare our scheme with the previous methods.