Dynamic Cell Reconfiguration Framework for Energy Conservation in Cellular Wireless Networks

다국어 초록 (Multilingual Abstract)

Several energy saving techniques in cellular wireless networkssuch as active base station (BS) selection, transmit powerbudget adaptation and user association have been studied independentlyor only part of these aspects have been considered togetherin literature. In this paper, we jointly tackle these three problemsand propose an integrated framework, called dynamic cell recon-figuration (DCR). It manages three techniques operating on differenttime scales for ultimate energy conservation while guaranteeingthe quality of service (QoS) level of users. Extensive simulationsunder various configurations, including the real dataset ofBS topology and utilization, demonstrate that the proposed DCRcan achieve the performance close to an optimal exhaustive search.
Compared to the conventional static scheme where all BSs are alwaysturned on with their maximum transmit powers, DCR cansignificantly reduce energy consumption, e.g., more than 30% and50% savings in uniform and non-uniform traffic distribution, respectively.

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