Large scale characteristics analysis in microcell to femtocell scenario based on channel measurement

Femtocell, as a new emerging deployment scenario for next generation mobile wireless communication systems, has attracted more and more attention recently for providing sufficient indoor coverage and stable backhaul link. The interference problem is publicly known as a key for femtocells to be widely deployed. So lots of standardizing bodies and research groups are dedicated to the interference study of femtocells. It is well-known that all the evaluation and simulation on interference study should be on the basis of an accurate and unified channel model. However, hitherto there is no a specialized channel model for the work of interference study on femtocells. Therefore, we performed a field wideband multi-input multi-output (MIMO) channel measurement in an outdoor microcell to indoor femtocell scenario which is a very important scenario in the interference analysis for femtocells in order to obtain the channel characteristics of this scenario. In this paper, large scale parameters such as path loss and shadow fading will be analyzed and modeled to provide parameters for the evaluation and simulation works on femtocells.