Title :
An optimal distributed call admission control for adaptive multimedia in wireless/mobile networks
Author :
Xiao, Yang ; Chen, C. L Philip ; Wang, Yan
Author_Institution :
Dept. of Comput. Sci. & Eng., Wright State Univ., Dayton, OH, USA
Abstract :
There is a great demand on multimedia applications with quality of service (QoS) in wireless/mobile networks. In this paper, we propose an optimal call admission control (CAC) framework with a bandwidth re-allocation (BRA) algorithm for adaptive multimedia services in wireless/mobile networks, where the bandwidth of an ongoing call is time-varying during its lifetime. The optimization is in the sense of optimizing the revenue and satisfying QoS requirements. We adopt a semi-Markov decision process (SMDP) approach to model both the CAC and the BRA at the same time. The proposed approach allows us to make decisions on CAC as well as on BRA. The simplex method in linear programming is used to solve the optimal decision problem. Numerical results reveal that the proposed CAC-BRA scheme adapts itself well to time-varying multimedia traffic, achieves optimal revenue and satisfies QoS up to the upper-bound handoff blocking probability
Keywords :
Markov processes; adaptive systems; bandwidth allocation; cost optimal control; decision theory; linear programming; multimedia communication; quality of service; radio networks; telecommunication congestion control; CAC-BRA scheme; adaptive multimedia services; bandwidth reallocation algorithm; linear programming; mobile networks; multimedia applications; optimal decision problem; optimal distributed call admission control; revenue optimization; semi-Markov decision process; service quality; simplex method; time-varying bandwidth; time-varying multimedia traffic; upper-bound handoff blocking probability; wireless networks; Adaptive control; Bandwidth; Call admission control; Intelligent networks; Programmable control; Quality of service; Streaming media; Telecommunication traffic; Traffic control; Wireless sensor networks;
Conference_Titel :
Modeling, Analysis and Simulation of Computer and Telecommunication Systems, 2000. Proceedings. 8th International Symposium on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7695-0728-X
DOI :
10.1109/MASCOT.2000.876574