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WiMAX实时业务下的自适应带宽申请机制

DOI: 10.13190/jbupt.200706.56.018, PP. 56-59

Keywords: 自适应算法,全微波存取全球互通,服务质量,实时业务

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Abstract:

针对全微波存取全球互通(WiMAX)系统的实时业务提出了一种新的基于流量预测的自适应带宽申请机制。该算法依据系统的历史流量数据将指数平均预测和平均累计误差结合起来,对下一时刻到达W系统的数据流量进行估计,在数据流到达之前预先申请额外的带宽资源用于服务该数据流,从而减少实时业务流的时延滞后,并减轻数据流对缓冲的压力。仿真结果显示,自适应带宽请求机制能显著改善实时业务的时延特性和减小缓冲需求。

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