计算机科学 ›› 2016, Vol. 43 ›› Issue (Z11): 290-295.doi: 10.11896/j.issn.1002-137X.2016.11A.068
张媛媛,王坚,肖创柏
ZHANG Yuan-yuan, WANG Jian and XIAO Chuang-bai
摘要: 针对异构无线网络中域内资源管理优化方案进行了研究,提出了部分可观察马尔科夫调制泊松过程的业务模型对异构无线网络单一域内突发性事件——溢出呼叫进行了分析,提出了针对异构无线网络结构特点和实际业务需求的优化接纳控制模型。建立了最小化网络能耗的优化目标,综合考虑网络状态和拒绝呼叫产生的网络开销,构建了优化决策模型,获得的优化策略能平衡溢出呼叫引起的网络开销和业务服务质量需求之间的矛盾,进一步推导和验证了业务服务请求到达网络的到达率、呼叫连接时间和呼叫逗留时间之间的关系,采用部分可观察马尔科夫调制泊松过程进行性能分析,根据获得的性能参数进行接纳控制决策,验证了异构无线网络域内优化管理模型的合理性和适用性。与资源完全共享算法相比,所提模型降低了网络能耗,在优化策略适应网络状态变化的同时,保证了业务的服务质量需求。
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