Title :
Prioritized multi-class adaptive framework for multimedia wireless networks
Author :
Nasser, Nidal ; Hassanein, Hossam
Author_Institution :
Sch. of Comput., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
The next generation of wireless cellular networks (WCNs) is expected to support real-time multimedia applications with different classes of traffic and diverse bandwidth requirements. Bandwidth is a scarce resource in wireless networking that needs to be carefully allocated amidst competing connections with different quality of service (QoS) requirements. In this paper, we propose an adaptive framework for supporting multiple classes of multimedia services with different QoS requirements in WCNs. The framework combines the following components: (i) a threshold-based bandwidth allocation policy that gives priority to handoff calls over new calls and prioritizes between different classes of handoff calls by assigning a threshold to each class, (ii) an efficient threshold-type call admission control (CAC) algorithm, and (iii) a bandwidth adaptation algorithm (BAA) that dynamically adjusts the bandwidth of an ongoing multimedia call to minimize the number of calls receiving lower bandwidth than the requested. Numerical results show that the performance of our adaptive multimedia framework outperforms that of existing non-adaptive schemes in terms of the handoff call dropping probability and effective utilization.
Keywords :
bandwidth allocation; cellular radio; multimedia communication; quality of service; telecommunication congestion control; telecommunication traffic; QoS requirements; adaptive multimedia services; bandwidth adaptation algorithm; call admission control algorithm; handoff call dropping probability; multiclass adaptive framework; quality of service; threshold-based bandwidth allocation policy; traffic and diverse bandwidth requirements; wireless cellular networks; Bandwidth; Call admission control; Channel allocation; Heuristic algorithms; Land mobile radio cellular systems; Next generation networking; Quality of service; Resource management; Telecommunication traffic; Wireless networks;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313358