Mobile Motion Prediction and QoS Improvement

• Main Author: 詹文志
• Other Authors: 古政元
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/02417103242283851294

碩士 === 國立中正大學 === 資訊管理學系 === 92 === There are many way to lower handoff drop rate, one of them is prediction. If we can predict the next cell which people will move in, we could preserve bandwidth for him or her, when people move in that cell, the phone call will not drop because of bandwidth reservation. Many people had develop their method to predict the user moving direction, but most of them use sophisticate stochastic processes or they need record huge data to complete the job. We are trying to use simple calculation and a little extract data to predict the user moving direction. What we are trying to do is using less cost to achieve the same, even better performance. Our prediction method keeps track of user mobility patterns and traffic patterns between cells. With the easy path comparing, we can derivate condition probability and the next target cell, the target cell will informed to reserve bandwidth basis of this probability. Through adjusting the reserved bandwidth dynamically, we could maintain the handoff drop rate under target value, mean while, using bandwidths efficiently and improving the quality of services.