An Improved Adaptive Time-Threshold-Based Queuing Scheme for Cellular Multimedia Networks
This paper proposes an Improved Adaptive TimeThreshold-based Queuing bandwidth allocation scheme for Multimedia services (IATTQM) in cellular networks. Because future data service will occupy a large portion of all services in next generation mobile networks and forced termination of an ongoing call is clearly less desirable than blocking of a new call attempt, there is much significance in improving non-prioritized handoff data call dropping probability of Finite Queuing Adaptive TimeThreshold-based bandwidth allocation Scheme for Multimedia services (FQATTSM) further. The proposed scheme modifies priority definition and bandwidth allocation of FQATTSM and then, designs a fixed probabilistic priority policy for QoS guarantee of voice service. Simulation results show that the proposed scheme enormously improves performance of non-prioritized handoff data dropping probability at the cost of some increasing the average queuing delays of non-prioritized handoff data calls while keeping high total bandwidth utilization compared with FQATTSM. Because data service has non-time sensitive character and the increment is rather limited, the average queuing delay for nonprioritized handoff data calls can still satisfy QoS requirement of data service.
handoff cellular networks multimedia services dynamic channel reservation
Jialin Cai
Dept of Communication Engineering East China Normal University Shanghai 200241, P.R.china
国际会议
成都
英文
249-253
2010-07-07（万方平台首次上网日期，不代表论文的发表时间）