摘要： 提出一种新的具有多重服务质量保证的区分业务到无线链路的优化映射。在保证丢包率的条件下，建立线性整数规划模型，采用搜索求解，实现资源消耗最小的区分业务到无线链路业务类别映射。在已知类别映射的条件下，基于统计流模型，用最陡下降法求解丢包率，建立时延误差最小映射的带宽分配优化模型，且考虑链路时变对带宽分配的影响。仿真结果表明，相比其他方法，该优化映射可使总的资源消耗、丢包率以及时延映射误差达到最小，并能够跟踪链路时变。

关键词: 服务质量映射, 类映射, 线性整数规划, 带宽分配, 最陡下降法, 时变链路

Abstract: An optimal mapping from differential service to wireless link with multiple Quality of Service(QoS) support is presented, which include two steps. The first is the optimal service category mapping from the difference service to the wireless link subjected to the packets loss ratio based on the line integer programming and its search solution. The second is to set up an optimal bandwidth allocation model for the mapped service subjected to the minimum error of the packets loss ratio and the delay based on the queue statistical flow theory and to solve the model using the steepest descent method, where the numerical description for the bandwidth gradient is used and the effect of the time variation to the bandwidth allocation is involved. Simulation results show that the mapping can make the resource consumption and the mapping error of the packets loss ratio and delay the least, and the result can be adaptive to the time variation of the link.

Key words: Quality of Service(QoS) mapping, category mapping, line integer programming, bandwidth allocation, steepest descent method, time variable link

中图分类号: 

• TP393