Adaptive Quality of Service Management Using QoS Proxy and User Feedback for Wireless Links

摘要

In this paper, we propose a mechanism for Quality of Service (QoS) Control with a proxy model for wireless communication networks. The concept is characterized by the management of user profiles in the proxy server, and the adaptive adjustment of the quality of service with respect to user's requirements presented by the user profiles and the user feedback. The QoS proxy server resides on the base station of a wireless network and intermediates the user's mobile terminal and the other side such as another mobile user or an Internet server in the wired network side. According to the available bandwidth on the wireless link, the proxy server adjusts QoS before sending data stream to the mobile user based on his user profile. The user also can express his preference during the connection by sending an user feedback to the proxy server to get more or less quality. On the other hand, the proxy server has to manage the total bandwidth and its distribution, furthermore to realize QoS adaptation according to the actual link bandwidth condition.