Performance Analysis of a QoS Guaranteed Dynamic Channel Reservation for Handoff Prioritization in Cellular Mobile Networks

The handoff prioritization schemes in channel allocation are often carefully scheduled for it is more serious to drop an ongoing call than blocking a new call. In order to let the number of reserved channel for handoff prioritization be compatible with the real time handoff traffic variation in a cluster and seek the balance between the new call blocking probability and the handoff failure probability in cellular mobile networks, in this paper, a dynamic channel reservation scheme (DCRS) adopted with quality of service (QoS) guarantee is investigated. A closed-form expression is also derived to calculate the number of reservation channel to adapt the handoff traffic variations. The system performance is improved more than 15% compared with the guard channel scheme (GCS).