Performance of an Adaptive Timer Handoff Algorithm for Mobile Cellular Systems

• Main Authors: Fu-Bin Gao, 高富斌
• Other Authors: Yung-Fa Huang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/84888463976119005120

碩士 === 朝陽科技大學 === 資訊與通訊系碩士班 === 98 === In this study, we present an adaptive timer handoff (ATHO) algorithm for mobile cellular communication systems. The proposed ATHO algorithm scheme is based on received signal strength (RSS) with a hysteresis timer to adapting the ping-pong effect for mobile systems. Moreover, the ATHO algorithm outperforms the fixed timer handoff (FTHO) algorithm in link quality of service for mobile systems. We pro-posed a performance index with weighted based handoff rate and handoff delay. With the performance index, we optimize the handoff adaptivity for proposed ATHO. Simulation results show that the proposed ATHO can adapt the fast MS and outperform the FTHO algorithm. Especially for the driving mobile stations (MSs), the proposed ATHO largely improves both of handoff rate and link degradation performance.