关键词: 无线网络, 资源分配, 效用函数, 混合业务, 服务质量

Abstract:

The problem that the existed resource allocation strategies cannot give integrative consideration to quality of service (QoS), frequency efficiency for mixed traffic scenario is stated. And a utilitybased resource allocation strategy for wireless networks from practical utilization aspect is proposed. The unified utility function for users with different traffics is studied firstly. Secondly, the resource allocation strategy based on this unified utility function is analyzed in mixed traffic scenario after building and analyzing the optimization model. This strategy can automatically guarantee the QoS requirement for realtime traffics and the tradeoff between throughput and fairness for users with best effort traffics through utility function. Numeric simulation indicates that this strategy is very applicable for mixed traffic, and the resource requirements for QoS users can be satisfied preferentially in mixed traffic scenario.

Key words: wireless networks, resource allocation, utility function, mixed traffic, quality of service