Adaptive Coordinated Napping (CoNap) for Energy Saving in Wireless Networks
IEEE Transactions on Wireless Communications(2013)
摘要
We propose a time slot based transmission strategy, referred to as adaptive coordinated napping (CoNap), for energy saving in cellular networks under time-varying traffic demand. In adaptive CoNap network, multiple neighboring base stations (BSs) form a cluster and each BS operates in either a transmit mode (TM) or a nap mode (NM) in each time slot. The dynamic assignment of TM and NM to each BS is implicitly coordinated among multiple BSs. This implicit coordination is realized by a binary general flickering pattern matrix (FPM) through adaptively selected mapping matrix (MM). To track the time-varying traffic demand, we develop an adaptive algorithm to dynamically select the appropriate MM from a predefined MM set by taking into account the network quality of service (QoS) requirement. Our numerical results based on a realistic energy consumption model in a cellular network show that as high as 40% saving can be achieved without compromising the network QoS.
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关键词
cellular radio,matrix algebra,quality of service,radio networks,telecommunication traffic,BS,FPM,MM,NM,QoS,TM,adaptive CoNap network,adaptive coordinated napping,cellular networks,energy saving,flickering pattern matrix,mapping matrix,multiple neighboring base stations,nap mode,quality of service,time slot based transmission strategy,time-varying traffic demand,transmit mode,wireless networks,Cellular networks,coordinated base station napping,dynamic base station switching,energy saving,green communications,resource scheduling,sleeping strategy
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