A Dynamic-Adjusting Network Selection Algorithm With MIH Functions Working in Heterogeneous Network

• Main Authors: Juei-Ying Lin, 林瑞營
• Other Authors: Wei-Tsong Lee
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/74764418024746479108

碩士 === 淡江大學 === 電機工程學系碩士班 === 96 === Media Independent Handover (MIH) is a standard being developed by IEEE 802.21 to enable the handover of IP sessions from one layer access technology to another, to achieve mobility of end user devices. However, how to select an appropriate wireless network which can provide user a high performance service is still an open issue for the MIH. We have discussed a network selection algorithm based on IEEE 802.21 MIH functions in this paper. The algorithm we proposed is used to select the most appropriate network for the applications user is using. For different applications, we made different weights to select different networks to achieve a higher performance or to maintain a higher network quality. In this paper, we defined three main equations to select the most appropriate network. Also we have added threshold values to each application to reduce handover times. In the network selection equation, we have proposed six main parameters to decide which and when should the handover decision be made. The details of the comparison between the algorithm we proposed and the existing algorithm will be shown in the fourth part in this paper. In the future we will add a dynamic-adjusting buffer management mechanism to achieve seamless handover.