Title :
Intelligent call admission control for differentiated QoS provisioning in wideband CDMA cellular systems
Author :
Chang, C. Hung-Ju ; Shen, Scott ; Lin, Jiun-Hsiung ; Ren, Fang-Ching
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
We propose intelligent call admission control for wideband CDMA cellular systems to support differentiated QoS requirements. The intelligent call admission controller (ICAC) adopts fuzzy and neural network techniques to make admission decision for a new call request by considering the QoS measures of all service types, predicted next-step existing-call interference, and estimated new-call interference. It contains a fuzzy call admission processor, a pipeline recurrent neutral network (PRNN) interference predictor and a fuzzy equivalent interference estimator. Simulation results indicate that ICAC attains better performance in keeping QoS guaranteed, blocking probability and admitted number of users. Furthermore, ICAC is more adaptive and stable than SIR-based CAC in wideband CDMA cellular systems
Keywords :
broadband networks; cellular radio; code division multiple access; fuzzy control; intelligent control; pipeline processing; quality of service; radio networks; radiofrequency interference; recurrent neural nets; telecommunication congestion control; QoS guarantee; QoS measures; SIR-based CAC; blocking probability; differentiated QoS provisioning; estimated new-call interference; fuzzy call admission processor; fuzzy equivalent interference estimator; intelligent call admission control; interference predictor; performance; pipeline recurrent neutral network; predicted next-step existing-call interference; simulation results; wideband CDMA cellular systems; Call admission control; Fuzzy control; Fuzzy neural networks; Intelligent control; Intelligent networks; Interference; Multiaccess communication; Neural networks; Pipelines; Wideband;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886270
