Co-channel Interference Mitigation Based on Location Information in LTE Femtocell Systems

Macrocell base stations are mainly aiming to serve outdoor mobile users thus indoor mobile users may suffer from weak signals because of the outdoor-to-indoor wall penetration loss and indoor obstacles. Recently, in order to improve indoor performance, femtocell networks have been receiving a great deal of attention. However, since the femtocell and macrocell share the same frequency band, co-channel interference (CCI) between them is one of serious problems in femtocell networks. In order to reduce co-channel interference, this paper proposes a novel CCI avoidance scheme using the control channel information based on location information for the downlink of Long Term Evolution (LTE) femtocell networks. Simulation results show that the proposed scheme outperforms other schemes in terms of the outage probability and system throughput.

[1]  Romeo Giuliano,et al.  WiMAX fractional frequency reuse for rural environments , 2008, IEEE Wireless Communications.

[2]  Ismail Güvenç,et al.  A hybrid frequency assignment for femtocells and coverage area analysis for co-channel operation , 2008, IEEE Communications Letters.

[3]  Ameen Nassar,et al.  Adaptive Fractional Frequency Reuse (AFFR) scheme for multi-cell IEEE 802.16e systems , 2009, 2009 6th International Symposium on High Capacity Optical Networks and Enabling Technologies (HONET).

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

[5]  Mostafa Zaman Chowdhury,et al.  Interference mitigation using dynamic frequency re-use for dense femtocell network architectures , 2010, 2010 Second International Conference on Ubiquitous and Future Networks (ICUFN).

[6]  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.

[7]  Jie Zhang,et al.  Interference avoidance and dynamic frequency planning for WiMAX femtocells networks , 2008, 2008 11th IEEE Singapore International Conference on Communication Systems.

[8]  Holger Claussen,et al.  Effects of User-Deployed, Co-Channel Femtocells on the Call Drop Probability in a Residential Scenario , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[9]  Choong-Ho Cho,et al.  Co-channel interference avoidance in two-tier LTE femtocell systems using control information , 2013, 2013 19th Asia-Pacific Conference on Communications (APCC).

[10]  Dongweon Yoon,et al.  Resource alloation for orthogonal and co-channel femtocells in a hierarchical cell structure , 2009, 2009 IEEE 13th International Symposium on Consumer Electronics.