Call Admission Control for 3G CDMA Networks with Differentiated QoS
NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
Wireless Personal Communications: An International Journal
Call admission control for voice and data traffic in wireless communications
Computer Communications
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This paper analyzes the capacity of a multicode direct sequence-code division multiple access (DS-CDMA) cellular architecture supporting integrated (voice and data) traffic. The capacity estimate (on the uplink) is the number of voice users and data users, at different data rates, that the system can support with quality-of-service (QoS) guarantees (frame error rates (FER), outage probability). This estimate is based on an interference analysis that considers both perfect and imperfect power control, different user distributions in the cell, and the coverage trade-off resulting from hand-set power limitations. Localized interference from high speed data (HSD) users, combined with the effects of power control, adversely impacts voice capacity. The analysis investigates the effect of two important factors on capacity: (1) received power levels for the different classes of users and (2) data user activity. The results obtained are useful in designing power allocation and burst-level admission control strategies to optimize the capacity