Call Admission Control for a Multiple Rate CDMA System

Bor-Jiunn HWANG  Jung-Shyr WU  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.11   pp.2932-2945
Publication Date: 2001/11/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
CDMA,  scheduling,  QoS,  

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The next generation of wireless networks must provide sufficient resources to support a broader range of services beyond the traditional voice-only services provided in current wireless systems. For this, packet scheduling is the most critical function involved in the provision of individual bandwidth, and delay guarantee to meet the required qualities of service (QoS) for the switched sessions. In this paper we introduce the concept of system capacity in the multi-code CDMA system and evaluate the system performance constrained by the required SNRth and other QoS factors. The CAC algorithm is proposed to administer the requests. Moreover, the enforcer, scheduler and shaper are proposed to maintain the required QoS. The system performance including blocking probability, mean delay and bandwidth utilization in the BS egress are evaluated and compared under different traffic loadings.