行動通訊網路近年來進展神速，隨著行動用戶傳輸需求提升，基地台也跟著密集地建置。然而，建置基地台除了硬體耗材的金錢成本外，每啟動一台基地台所消耗的能源也不可小覷。本論文探討行動通訊系統吞吐量與能量損耗最佳化分析與模擬，在滿足系統中所有行動用戶傳輸需求的同時，盡量減少基地台能源的損耗，進而達到服務品質與節能雙重目標。論文中建立的模型原為混合整數非線性規劃問題(MINLP)，經由線性放鬆及線性轉換將其轉成混合整數線性規劃問題(MILP)，最後再由CPLEX模擬並求得最佳解。

With the increasing popularity of mobile users, more and more base stations are built to satisfy their transmission requirement, resulting in huge energy consumption. In this study, under the premise of achieving the quality of the whole system, we aim to minimize the total power consumption. According to the mobile communication system model, we construct a mathematical model which is a nonconvex mixed integer nonlinear programming (MINLP)problem. With the techniques of linear relaxation and linear conversion, the original model becomes mixed integer linear programming(MILP) problem, then we use CPLEX to solve the problem and find the optimal solution.

[1] Y. Shi, Y. T. Hou, and H. D. Sherali, “Cross-layer optimization for data rate utility problem in UWB-based ad hoc networks,” IEEE Trans. Mobile Comput., vol. 7, no. 6, pp. 764–777, Jun. 2008
[2] J.T. Louhi, “Energy Efficiency of Modern Cellular Base Stations,” IEEE INTELEC ’07, Rome, Italy, Sept. 2007
[3] Paramvir Bahl, Mohammad T. Hajiaghayi, Kamal Jain, Sayyed Vahab Mirrokni, Lili Qiu, and Amin Saberi, “Cell Breathing in Wireless LANs:Algorithms and Evaluation,” IEEE Transactions on Mobile Computing, vol. 6, no. 2, Feb. 2007
[4] C. E. Gounaris, R. Misener, and C. A. Floudas, “Computational comparison
of piecewise—Linear relaxations for pooling problems,” Ind. Eng.
Chem. Res., May 2009
[5] Y. Shi, Y. T. Hou, S. Kompella, H. D. Sherali, “Maximizing Capacity in Multi-Hop Cognitive Radio Networks under the SINR Model”, IEEE Transactions on mobile computing, vol. 10, No. 7, July 2011
[6] Copyright IBM Corporation, “IBM ILOG CPLEX Optimization Studio CPLEX User’s Manual”, Version 12 Release 6,2015
[7] Chin-Tai Hsu, Wen-Kuang Kuo,” Study on Energy Conservation for Cellular
Systems: A Global Optimization Approach”, IEEE Systems Journal,2015
[8] C. Peng, S. Lee, S. Lu, and H. Luo, “GreenBSN: Enabling energy proportional
cellular base station networks”, IEEE Trans. Mob. Comput., Nov. 2014
[9] E. Oh, X. Liu, and Z. Niu, “Toward dynamic energy-efficient operation of cellular network infrastructure,” IEEE Commun. Mag., Jun. 2011
[10] E. Oh, K. Son, and B. Krishnamachari, “Dynamic base station switching-
ON/OFF strategies for green cellular networks,” IEEE Trans. Wireless
Commun., May 2013
[11] A. Goldsmith, “Wireless Communications”, 2004
[12] A. A. Khalek, L. Al-Kanj, Z. Dawy, and G. Turkiyyah, “Optimization Models
and Algorithms for Joint Uplink/Downlink UMTS Radio Network Planning
With SIR-Based Power Control,” IEEE Transactions on Vehicular Technology,
vol. 60, no. 4, May 2011
[13] 3GPP R3-100162, “Overview to LTE Energy Saving Solutions to Cell Switch Off/On,” 3GPP RAN3 Meeting, Valencia, Spain, Jan. 2010