无线网络中基于效用函数的资源分配方案

Utility-Based Resource Allocation in Wireless Networks

从实际应用的角度出发,针对现有资源分配方案难以在混合业务下有效地兼顾服务质量(QoS)和频谱效率等问题,对不同业务的用户提出了统一形式的效用函数,通过建立最优化模型和对模型的分析,提出了混合业务下基于此效用函数的资源分配方案.该方案利用合适的效用函数自动保证了实时业务的QoS请求以及besteffort业务用户有效性和公平性的折中.仿真结果表明,该方案适用于混合业务,并能在混合业务中自动地优先满足QoS用户的资源请求.

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.