Dynamic PCI assignment in two-tier networks based on cell activity prediction

Physical cell identity (PCI) is used to identify each cell. However, with the introduction of femtocells, 8 bytes allocation for PCI cannot accommodate a large number of femtocells. The current solution in 3GPP Release 9 is to use cell global identity associated with PCI to resolve this problem. However, this solution may incur higher inbound handover failure. A dynamic PCI assignment based on cell activity level prediction is proposed. The system level simulation showed that the approach outperforms the existing approaches.

[1]  Sungoh Kwon,et al.  Virtual extension of cell IDs in a femtocell environment , 2011, 2011 IEEE Wireless Communications and Networking Conference.

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

[3]  Ting Wu,et al.  An Automation PCI Allocation Method for eNodeB and Home eNodeB Cell , 2010, 2010 6th International Conference on Wireless Communications Networking and Mobile Computing (WiCOM).

[4]  Dongmei Zhang,et al.  Physical Cell Identity Self-Organization for Home eNodeB Deployment in LTE , 2010, 2010 6th International Conference on Wireless Communications Networking and Mobile Computing (WiCOM).

[5]  Andrew McCallum,et al.  Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data , 2001, ICML.

[6]  Yue Wang,et al.  Mobility Prediction in Cellular Network Using Hidden Markov Model , 2010, 2010 7th IEEE Consumer Communications and Networking Conference.