Fan Zhu, Yiqun Wu, Zhisheng Niu, Queueing Delay and Energy Efficiency Analyses of Sleep Based Power Saving Mechanism, IEICE Trans. Communications, Vol.E93-B No.4 pp.1069-1072, Apr. 2010
Fan Zhu, Yiqun Wu, and Zhisheng Niu, Delay Analysis for Sleep-Based Power Saving Mechanisms with Downlink and Uplink Traffic, IEEE Comm. LETTERS, Vol.13, No.8, Aug. 2009