A Client-Server Cooperative Mechanism to Improve Handoff Latency in Wireless Network

• Main Authors: Yu-Wen Chiu, 邱裕文
• Other Authors: 陳漢宗
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/9sbugk

碩士 === 國立臺灣科技大學 === 電子工程系 === 94 === In this paper, we propose a new mechanism to obviate handoff delay and message congestion for fast handoff process in 802.11 networks. Since the utilization of wireless local area networks (WLAN) and security may degrade due to those problems, we take advantage of client-server cooperative mechanism to improve related issues. We use mobility center (MC), to record related information about access point (AP) which mobile node (MN) had handoff before. So, MN can quickly select AP which has better quality of service (QoS) to execute handoff in the future. Besides these, MN also keeps local information about AP in cache to speed up the coming handoff. In this way, the above-mentioned problem can be improved well.