基于时间间隔可变服务的HR-WPAN资源分配算法

在保证服务的前提下，HR-WPAN依据流量规范参数化QoS来传输应用层的数据包显得尤为重要.针对SIMA(service interval-based MAS allocation)分配算法存在延时跳跃或信道利用率低的问题，紧凑型分配算法存在因服务间隔时间不均匀可能导致无法对MASs进行分配的问题，提出了一种VSIB（variable-service interval-based）分配算法.该算法在流量规范的基础上，计算出媒体访问时隙、本地资源及本地条件的数量，确定超帧中媒体访问时隙的合适位置，从而在参数化QoS基础上能有效地保留媒体资源以容纳更多的设备.仿真实验结果表明，与SIMA分配算法及紧凑型分配算法相比，VSIB分配算法可容纳更多的设备，且资源分配效率高出10%左右.

Interval-Based Resource Allocation Algorithm of Variable-Service in HR-WPAN

It is very important to transmit data packets from the application layer according to the parametrization QoS of the traffic specification with guaranteed services in HR-WPAN.Aimed at the problem that the SIMA(service interval-based MAS allocation) allocation algorithm exists delay jumping or low channel utilization rate,the compact allocation algorithm may not distribute the MASs because of uneven service interval,this paper proposes a VSIB（variable-service interval-based）allocation algorithm.Based on the traffic specification,the algorithm calculates the number of media access slot，local resources and local conditions,determines the appropriate location of media access slot in super frame,and effectively retains media resources to accommodate more equipmentbased on the parametrization QoS.Simulation results show that the VSIB allocation algorithm can accommodate more devices than the SIMA allocation algorithm and the compact allocation algorithm,and the efficiency of resource allocation is more than about 10%.