异构无线网络中的能效改善机制研究

项目名称： 异构无线网络中的能效改善机制研究

项目编号： No.61201219

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 罗常青

作者单位： 华中科技大学

项目金额： 25万元

中文摘要： 无线网络能源消耗的增长不仅导致温室气体排放增长而且带来网络运营成本增加，因而有必要降低不必要的能量消耗和提升无线网络传输的能量效率。已有研究尚存许多问题，如不必要能量消耗的下降有限，能量效率提升以牺牲用户服务质量为代价等。考虑到异构无线网络能够将多种不同特性的无线网络融合在统一框架以实现不同无线网络之间协作的能力，这将有可能极大提高无线网络的能效，而且能保证不影响用户的服务质量。本课题拟结合认知学习、网络效用最大化模型和动态微分博弈，研究异构无线网络环境下基于认知学习的基站（或AP接入点）休眠调度机制，具有服务质量限制的能量效率模型和基于能量效率的无线网络接入等关键技术，为实现绿色通信提供理论依据。通过深入的理论分析、计算机仿真，使所提出算法在将来能够应用于实际的无线网络中。

中文关键词： 异构无线网络；能量效率；绿色通信；认知无线电；博弈论

英文摘要： The explosive increasing of energy consumption resulted from wireless networks not only deteriorates the greenhouse gas problem, but also increases the cost of network operation; thus, it is necessary to reduce the wasted energy consumption and improve the energy efficiency during the process of information transmission. Although a lot of work has been done on the improvement of the energy efficiency in recent years, there are lots of open issues, such as how to enhance the energy efficiency under the constraint of user's quality of service, the limited improvement of energy efficiency and so on. Considering that many kinds of wireless networks can be integrated into a framework where the coordination ability can be flexibly exploited, the energy efficiency may be significantly improved. In this proposal, cognitive learning, network utility maximum model and dynamic differential game theory are introduced to handle the problems of energy efficiency problem in heterogeneous wireless networks. Firstly,a cognitive learning based scheduling policy of silent base station or access point also needs to be taken into account. Secondly, an energy efficiency model with the constraint of quality of service is required to establish in order to evaluate the performance of the proposed schemes in the future. Finally, dynamic

英文关键词： Heterogeneous wireless networks；Energy efficiency；Green communications；Cognitive radio；Game theory