Computer networks (3rd ed.)
IS-95 CDMA and cdma2000: cellular/PCS systems implementations
IS-95 CDMA and cdma2000: cellular/PCS systems implementations
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Integrated voice/data call admission control for wireless DS-CDMAsystems
IEEE Transactions on Signal Processing
Call admission control for CDMA mobile communications systems supporting multimedia services
IEEE Transactions on Wireless Communications
Thinning schemes for call admission control in wireless networks
IEEE Transactions on Computers
Joint admission/congestion control for wireless CDMA systems supporting integrated services
IEEE Journal on Selected Areas in Communications
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This paper presents a novel hierarchical approach where call admission level control and slot level control schemes are designed in a unified framework for efficient transmission of multimedia traffic over CDMA networks. The voice traffic is modeled using an on-off Markov model to accurately capture the temporal correlations in the multimedia data. The data traffic is modeled as delay tolerant and greedy. i.e. data traffic always tries to utilize the maximal available bandwidth. The simulation results show that the proposed hierarchical access scheme improves channel utilization by 15-18% compared to the existing schemes in the literature. Also, by rejecting incoming traffic at both call admission and slot levels our method reduces interference. This significantly improves the Packet Error Rate (PER) while achieving maximal throughput. In particular the packet error rate is about 4 times lower for voice traffic and about 10 times lower for data traffic.