Call admission control, bandwidth adaptation, and scheduling in cellular wireless Internet: Analytical models and performance evaluation.

摘要

In this thesis, we address admission control, bandwidth adaptation and scheduling problems in a cellular wireless Internet environment. While the admission control is responsible for deciding whether an incoming call/connection can be accepted or not, bandwidth adaptation and scheduling are used to allocate the available resources among the ongoing calls/connections adaptively. We provide an extensive survey of the existing admission control algorithms. The issues related to and the approaches for designing admission control and bandwidth adaptation in fourth-generation (4G) cellular wireless networks are discussed. An admission control method considering the quality of service (QoS) requirements in both the wireless and the wired part of the networks is presented.; At the mobile end, we propose a service differentiation model for QoS-sensitive and best-effort traffic. Traffic scheduling is used to grant access to wireless channel. Admission control is used for QoS-sensitive traffic to limit the number of ongoing connections so that the QoS requirements can be met. (Abstract shortened by UMI.)