Survey and Comparative Analysis of Energy Saving Mechanisms for LTE-Advanced Femtocells

In this paper we study dynamic energy saving mechanisms for the Long Term Evolution Advanced system (LTE-Advanced) with user-deployed cellular base stations (a.k.a. femtocells). In particular, we present a thorough review of different energy-saving approaches specific to LTE-Advanced networks, presenting existing component-level and system-level energy-saving techniques. Based on this review, we subsequently investigate 6 different mechanisms for dynamic cell deactivation and we evaluate them based on a) the user load in the cell, b) the traffic model, and c) the user mobility.

[1]  Timothy A. Thomas,et al.  LTE-advanced: next-generation wireless broadband technology [Invited Paper] , 2010, IEEE Wireless Communications.

[2]  Luis Alonso,et al.  "Green" distance-aware base station sleeping algorithm in LTE-Advanced , 2012, 2012 IEEE International Conference on Communications (ICC).

[3]  Lazaros F. Merakos,et al.  Distance Distributions and Proximity Estimation Given Knowledge of the Heterogeneous Network Layout , 2015, IEEE Transactions on Wireless Communications.

[4]  Kamran Arshad,et al.  Interference Management in Femtocells , 2013, IEEE Communications Surveys & Tutorials.

[5]  Yang Yang,et al.  Network energy saving technologies for green wireless access networks , 2011, IEEE Wireless Communications.

[6]  Marco Ajmone Marsan,et al.  Cell wilting and blossoming for energy efficiency , 2011, IEEE Wireless Communications.

[7]  Jeffrey G. Andrews,et al.  Femtocells: Past, Present, and Future , 2012, IEEE Journal on Selected Areas in Communications.

[8]  S BontuChandra,et al.  DRX mechanism for power saving in LTE , 2009 .

[9]  Lazaros F. Merakos,et al.  Handover decision for small cells: Algorithms, lessons learned and simulation study , 2016, Comput. Networks.

[10]  Lei Zhou,et al.  Performance Analysis of Power Saving Mechanism with Adjustable DRX Cycles in 3GPP LTE , 2008, 2008 IEEE 68th Vehicular Technology Conference.

[11]  J. Wigard,et al.  On the User Performance of LTE UE Power Savings Schemes with Discontinuous Reception in LTE , 2009, 2009 IEEE International Conference on Communications Workshops.

[12]  Lazaros F. Merakos,et al.  Mobility Management for Femtocells in LTE-Advanced: Key Aspects and Survey of Handover Decision Algorithms , 2014, IEEE Communications Surveys & Tutorials.

[13]  Jeffrey G. Andrews,et al.  Femtocell networks: a survey , 2008, IEEE Communications Magazine.

[14]  Holger Claussen,et al.  Improving Energy Efficiency of Femtocell Base Stations Via User Activity Detection , 2010, 2010 IEEE Wireless Communication and Networking Conference.

[15]  Stefan Parkvall,et al.  Evolution of LTE toward IMT-advanced , 2011, IEEE Communications Magazine.

[16]  Min Li,et al.  Opportunities for energy savings in pico/femto-cell base-stations , 2011, 2011 Future Network & Mobile Summit.