Multiple Quality-of-Service Provisioning for Non-Real-Time Services in Wireless Data Networks
Show‐Shiow Tzeng, Hsin-Yi Lu, Theodore E. Simos, George Psihoyios · AIP conference proceedings · 2008
One important category of network services in wireless data networks is non‐real‐time services. When mobile users access non‐real‐time services, mobile users usually care about two important points; one is whether mobile users are not forced to terminate during their lifetime, and the other is whether the total time to complete mobile users’ data transfer is within their time tolerance. Low forced termination probability can be achieved through use of the technique of bandwidth adaptation which dynamically adjusts the number of bandwidths allocated to a mobile user during the mobile user’s connection time. However, there is not a metric at a connection level to present the degree of the length of the total completion time. In addition, different mobile users may have different tolerances in the total completion time. In this paper, we describe a quality‐of‐service metric, called stretch ratio, to present the degree of the length of the total completion time. We devise a measurement based call admission control scheme that provides multiple stretch ratios for mobile users. Simulation results show that the measurement based call admission control scheme satisfies the various quality‐of‐service requirements of mobile users (in terms of various stretch ratios).