A Location Tracking Strategy in an Overlaid Two-Tier Personal Communication System

• Main Authors: Tsung-Pin Chen, 陳宗斌
• Other Authors: Yu-Chee Tseng
• Format: Others
• Language: en_US
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/66364218051699645660

碩士 === 國立中央大學 === 資訊工程研究所 === 87 === To meet the growing demands on personal communication systems (PCS), one infrastructure that has been proposed recently is the two-tier structure. As opposed to the one-tier structure, it integrates a high-tier radio system and a low-tier radio system together, which can overlap with each other in their cells. Better service quality and more channel reuse can be provided by such two-tier structure. In this paper, we consider the location tracking problem under such infrastructure. We show an efficient distance-based strategy for a mobile terminal to update its location and for a caller to search for the terminal to establish a connection. Factors such as the mobile terminal roaming speed, roaming direction, mobility pattern, and frequently visited locations are taken into account in designing our strategy. A simulation evironment is designed to model a mobile subscriber's mobility pattern and to verify the proposed strategy.