Title :
Capacity enhancement with simple and robust soft-decision call admission control for WCDMA mobile cellular PCN´s
Author :
Phan-Van, Vinh ; Luong, Dung D.
Author_Institution :
Nokia Networks, Finland & BUTE, Hungary
fDate :
6/23/1905 12:00:00 AM
Abstract :
Limited and extremely expensive radio resources are the bottleneck of the system capacity in 3G WCDMA cellular PCN. This paper investigates call admission control (CAC) to improve the uplink spectral efficiency that is viewed as an interference management problem. By exploiting the "soft-capacity" feature and cell-interference distributions of CDMA systems, an effective and robust soft-decision CAC (SCAC) is proposed. Comparative study of CAC policies is presented to show the advantages of SCAC. Moreover, this paper provides a comprehensive analytical method for evaluating teletraffic performance of the cellular system supporting real-time and background non real-time services. This is based on stationary and quasi-stationary analysis of a state-dependent birth-death process. The results are important for optimizing overall system grade of service, Erlang capacity, and throughput
Keywords :
cellular radio; channel capacity; code division multiple access; interference suppression; personal communication networks; quality of service; telecommunication congestion control; telecommunication traffic; 3G WCDMA; Erlang capacity; call admission control; capacity enhancement; cell-interference distributions; grade of service; interference management; mobile cellular PCN; quasi-stationary analysis; real-time services; soft decision; soft-decision CAC; state-dependent birth-death process; stationary analysis; teletraffic performance; throughput; uplink spectral efficiency; Call admission control; Cellular networks; Interference; Multiaccess communication; Personal communication networks; Radio control; Real time systems; Robust control; Robustness; Throughput;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956416
