Multiclass call admission control in QoS-sensitive CDMA networks

In this paper, we consider a CDMA cellular network that has signal power as its scare resource and uses the multicode transmission scheme to support multiclass calls with different QoS requirements. By simply extending the number-based scheme to accomodate multiclass traffic, we present a power-based call admission control scheme. Contrary to the general fact that complete sharing (CS) achieves better utilization than complete partitioning (CP), our finding in this paper is somewhat unique. That is, CP of signal power for each traffic class can accommodate a reasonably high number of users when compared with CS. This result allows us to use CP which is much easier than CS in terms of resource management. By adopting the CP technique for resource reservation in wireless CDMA networks, we can guarantee QoS of calls in terms of handoff drops with minimal complexity.