基于效用函数的OFDM混合业务资源调度算法*

主要研究了QoS和BE两种混合业务场景下OFDM无线网络下行链路的资源调度问题，提出了一个基于效用函数的跨层资源调度模型，其能够自适应地对两种业务进行资源的联合优化分配。该模型被抽象为一个非线性整数规划问题，优化目标是系统总效用最大化，同时满足同信道干扰（CCI）约束以及QoS业务的质量要求。将该非线性整数规划问题转换为连续松弛凸规划问题进行求解，并结合最优松弛解，提出了一种简单的动态子载波分配算法，即MMU(mix-max-utility) 算法。仿真结果验证了该调度算法能使系统较好地支持混合业务，系统

Utility-based resource allocation for heterogeneous services in OFDM wireless networks

This paper concentrated on the problem of resource allocation in OFDM wireless networks which support both QoS traffic and best effort(BE) traffic,and proposed a utility-based cross-layer resource scheduling model,which performed combinational-optimization adaptive resources allocation.First,formulated the scheduling model as a non-linear integer program problem with the objective of maximization total utility,constrained to the CCI restriction and the quality-of-service requirement of QoS traffic.And then,...