Adaptive resource management for mobile multimedia communications in asymmetric wireless network

被引:0
作者
Lin, C [1 ]
Wei, YY [1 ]
Shan, ZG [1 ]
机构
[1] Tsing Hua Univ, Dept Comp Sci, Beijing 100084, Peoples R China
来源
2005 2nd International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks (QShine) | 2005年
关键词
QoS; multimedia; wireless; asymmetry;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In the multi-service wireless networks, the bandwidth asymmetry is the distinctive characteristic. To avoid wasting uplink and downlink bandwidth in asymmetric network admissible region for the non-real-time (NRT) calls has been proposed. But in that scheme the static guard capacity for RT and NRT calls cannot adapt to traffic variation. In addition, the differentiated QoS set-vices to users are not considered. In this paper, we propose an Adaptive Guard Channel Reservation (AGCR) scheme, which has the following novelties: i) the guard capacity for each class is dynamically adjusted so as to adapt to dynamic traffic, ii) the blocking probabilities of classes with higher priority are kept below certain targets and iii) differentiated QoS services to users are provided by maintaining the blocking probability ratios over different classes at the predefined targets. Simulation results have demonstrated the proposed AGCR scheme can keep the blocking probabilities of classes with higher priority below certain targets, track the ratios close to the targets well while maintaining a high bandwidth utilization.
引用
收藏
页码:368 / 373
页数:6
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