An uplink analytical model for two-tiered 3G femtocell networks

This paper proposes an analytical model to investigate the impact of interference on the uplink capacity and coverage in a WCDMA network where macrocell and femtocells co-exist. Geometric modeling for the hierarchical system is used where the randomly deployed femtocells are within the planned macrocells' topology. The interference effects among femtocells and between femtocells and macrocells are studied analytically to quantify the system capacity and coverage based on the practical target signal-to-interference ratio (SIR). Interference level splitting results show that the macrocell attached User Equipment (UE) to Home Node B (HNB) interference has severe impact on the capacity and coverage of femtocell network. Further study suggests that advanced receivers which cancel interference at the femtocell could minimize the effect brought by different interferences in a cost-effective manner.

[1]  Akhilesh Pokhariyal,et al.  Interference management and performance analysis of UMTS/HSPA+ femtocells , 2009, IEEE Communications Magazine.

[2]  Venkatesh Ramaswamy,et al.  Multi-Carrier Macrocell Femtocell Deployment-A Reverse Link Capacity Analysis , 2009, 2009 IEEE 70th Vehicular Technology Conference Fall.

[3]  D. Das,et al.  On the Reverse Link Capacity of a CDMA Network of Femto-cells , 2008, 2008 IEEE Sarnoff Symposium.

[4]  Zaher Dawy,et al.  Coverage and capacity enhancement of CDMA cellular systems via multihop transmission , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[5]  Jeffrey G. Andrews,et al.  Uplink Capacity and Interference Avoidance for Two-Tier Cellular Networks , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[6]  Jeffrey G. Andrews,et al.  Uplink capacity and interference avoidance for two-tier femtocell networks , 2007, IEEE Transactions on Wireless Communications.

[7]  Holger Claussen.  Co-Channel Operation of Macro- and Femtocells in a Hierarchical Cell Structure , 2008, Int. J. Wirel. Inf. Networks.

[8]  Holger Claussen,et al.  Performance of Macro- and Co-Channel Femtocells in a Hierarchical Cell Structure , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

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