基于QoS的宽带无线接入控制的研究

第三代移动通信系统将提供对多媒体业务(视频、音频和数据)的支持,因此必须能够提供服务质量的保证。由于移动网中蜂窝半径的持续变小和用户的移动性,使移动网提供服务质量保证更困难。本文提出了一种能在微蜂窝宽带移动系统中提供较高服务质量的接入控制方法,该方法将接入控制和服务质量保证有机地结合在一起。

Admission Control Based On QoS for Third Generation Broadband Mobile Communication Systems

Third generation mobile communications networks will support audio, video, multimedia data, and speech services. Therefore, it is important that these networks provide quality of service (QoS) guarantees. However, provision of QoS in wireless networks becomes complex due to user mobility. The problem becomes even more challenging as recent mobile networks have been implemented based on small size cells (i.e., micro cell or pico cell) to allow higher transmission capacity, and thus to achieve better performance. Small size cells increase the handoff rate, and result in rapid changes in the network traffic conditions, making QoS guarantees difficult. In this paper, a novel admission scheme is proposed that provide high degrees of QoS guarantees for multimedia traffic carried in broadband mobile networks. The proposed scheme combines admission control and bandwidth reservation to guarantee.