计算机科学 ›› 2016, Vol. 43 ›› Issue (Z11): 290-295.doi: 10.11896/j.issn.1002-137X.2016.11A.068

• 无线网络与通信 • 上一篇    下一篇

异构无线网络域内动态资源优化管理研究

张媛媛,王坚,肖创柏   

  1. 中央财经大学信息学院 北京100081,中央财经大学信息学院 北京100081,北京工业大学计算机学院 北京100022
  • 出版日期:2018-12-01 发布日期:2018-12-01
  • 基金资助:
    本文受北京市自然科学基金项目(4162007),国家自然科学基金项目(61501008),北京市社会科学基金项目(15JGB098)资助

Optimal and Dynamic Resource Management Scheme for Inter-domain Heterogeneous Wireless Networks

ZHANG Yuan-yuan, WANG Jian and XIAO Chuang-bai   

  • Online:2018-12-01 Published:2018-12-01

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。

关键词: 异构无线网络,资源管理,服务质量

Abstract: In order to solve the issue that existing model can not combine breakoff and integrity very well,a partially observable markov-modulated poisson process (PO-MMPP) traffic model was proposed.This model captures the burstiness of the overflow traffic under the imperfect observability of the network states.The optimal objective is the minimum network cost.It shows that the optimal control policy can balance the network cost and traffic QoS requirement.By derivation and confirmation,we induced the relations in call arrival rate and transition rates.Simulation results indicate that the proposed model provides better performance compared with complete sharing algorithm,in terms of minimizing the network cost,new call blocking and handoff call dropping probabilities.The network cost is reduced.The optimal control policy can be adaptive with network state and QoS requirement.

Key words: Heterogeneous wireless networks,Resource management,Quality of service

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