Dynamic radio resource allocation for 3G and beyond mobile wireless networks
Computer Communications
Call admission control in multiservice high altitude platform (HAP) W-CDMA cellular systems
Computer Networks: The International Journal of Computer and Telecommunications Networking
An intelligent-agent approach for congestion management in 3G networks
Engineering Applications of Artificial Intelligence
Optimization of radio resource management schemes in UMTS using pricing
Computer Communications
A capacity acquisition protocol for channel reservation in CDMA networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Computer Networks: The International Journal of Computer and Telecommunications Networking
Call admission control for reducing dropped calls in CDMA cellular systems
Computer Communications
Call admission control for wireless personal communications
Computer Communications
Admission control in UMTS in the presence of shared channels
Computer Communications
Automatic call management in a cellular mobile network by fuzzy threshold logic
International Journal of Knowledge-based and Intelligent Engineering Systems - Intelligent Information Processing: Techniques and Applications
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Signal-to-interference ratio (SIR)-based call admission control (CAC) algorithms are proposed and studied in a DS-CDMA cellular system. Residual capacity is introduced as the additional number of initial calls a base station can accept such that system-wide outage probability will be guaranteed to remain below a certain level. The residual capacity at each cell is updated dynamically according to the reverse-link SIR measurements at the base station. A 2k factorial experimental design and analysis via computer simulations is used to study the impact of the parameters used in the algorithms. The influence of these parameters on system performance, namely blocking probability and outage probability, is then examined via simulation. The performance of the algorithms is compared together with that of a fixed call admission control scheme (fixed CAC) under both homogeneous and hot spot traffic loading. The results show that SIR-based CAC always outperforms fixed CAC even under overload situations, which is not the case in FDMA/TDMA cellular systems. The primary benefit of SIR-based CAC in DS-CDMA cellular systems, however, lies in improving the system performance under hot spot traffic