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arXiv 1604.08758cs.NIcs.ITmath.IT
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小小区网络的动态分簇和睡眠方式策略

Dynamic Clustering and Sleep Mode Strategies for Small Cell Networks

Sumudu Samarakoon, Mehdi Bennis, Walid Saad, Matti Latva-aho

摘要:

在本文中,提出了一种新的基于簇的方法来优化无线小小区网络的能量效率。提出了一种基于谱分簇技术的动态机制来动态地形成小小区基站簇。这样的集群使得能够在基站之间进行集群内协调,以通过负载均衡来优化下行链路性能,同时满足用户的服务质量要求。在所提出的方法中,集群使用机会基站睡眠唤醒切换机制,以达到延迟和能量消耗之间的平衡。簇间干扰影响簇的性能以及它们对活动或睡眠状态的选择。由于缺乏集群间的通信,集群之间必须相互竞争,以提高能源效率的决策。这种竞争被制定为一个非合作的集群之间的游戏,寻求最小化的成本函数,捕捉能量消耗和负载之间的权衡。为了解决这个问题,提出了一种分布式学习算法,使用该算法的集群自主选择其最佳的传输策略。仿真结果表明,所提出的方法产生显着的性能增益,减少能源消耗高达40%,减少负载高达23%,相比传统的方法。

英文摘要:

In this paper, a novel cluster-based approach for optimizing the energy efficiency of wireless small cell networks is proposed. A dynamic mechanism based on the spectral clustering technique is proposed to dynamically form clusters of small cell base stations. Such clustering enables intra-cluster coordination among the base stations for optimizing the downlink performance through load balancing, while satisfying users' quality-of-service requirements. In the proposed approach, the clusters use an opportunistic base station sleep-wake switching mechanism to strike a balance between delay and energy consumption. The inter-cluster interference affects the performance of the clusters and their choices of active or sleep state. Due to the lack of inter-cluster communications, the clusters have to compete with each other to make decisions on improving the energy efficiency. This competition is formulated as a noncooperative game among the clusters that seek to minimize a cost function which captures the tradeoff between energy expenditure and load. To solve this game, a distributed learning algorithm is proposed using which the clusters autonomously choose their optimal transmission strategies. Simulation results show that the proposed approach yields significant performance gains in terms of reduced energy expenditures up to 40% and reduced load up to 23% compared to conventional approaches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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