LTE-A_ICIC_20110915-Inter-CellInterference创新.PDFVIP

Inter-Cell Interference Coordination for LTE-A Volker Pauli, Eiko Seidel Nomor Research GmbH, Munich, Germany September, 2011 Summary coordination (ICIC) has moved into the focus of Multi-layer heterogeneous network layout intensive research and standardization. The including small cell base stations are considered reason is that the evolution of the physical layer to be the key to further enhancements of the has reached a level, where operation very close spectral efficiency achieved in mobile to information theoretic bounds on achievable communication networks. It has been recognized spectral efficiency for a given signal-to- that inter-cell interference has become the interference-and-noise (SINR) ratio [3], [4] is limiting factor when trying to achieve not only feasible. Significant increases in spectral high average user satisfaction, but a high degree efficiency can therefore only be achieved by of satisfaction for as many users as possible. improving the SINR through reduction / Therefore, inter-cell interference coordination avoidance of the interference. (ICIC) lies in the focus of researchers defining next generation mobile communication The basic goal of ICIC in practice is the provision standards, such as LTE-A. of a more homogeneous service to users located in different regions of the network, i.e. mostly to Building upon [1], this paper provides an promote the cell-edge performance. This aspect overview over the background calling for ICIC in has gained even more importance with the heterogeneous LTE-A networks.