Exploiting path/location information for connection admission control in cellular networks

This paper demonstrates how to utilize (1) path information, e.g., available from navigation systems of Intelligent Transportation Systems (ITS), or (2) location information, e.g., available from the Global Positioning System (GPS), for admission control in cellular networks. From the path (location) information of a mobile, its next cell can be determined (estimated accurately sometimes). By utilizing the nextcell information, we modify a bandwidth reservation and admission control scheme with a design goal to keep the hand-off dropping probability below a pre-specified target. While the original scheme utilized a historybased mobility estimation, the modified scheme uses only part of it. While both the original and modified schemes meet the design goal, the modified scheme utilizing next-cell information is shown to outperform the original scheme even with much less computational requirement. Index Terms — cellular networks, bandwidth reservation for hand-offs, path/location information, QoS guarantees.