1. Introduction
Most of the propagtion models used in the past have the validty on frequency range upto 2 GHz, The validity of some of the propagation models, for example, Extended Hata in Seamcat has been extended to 3 GHz. The propagation models with frequency range validity above 3 GHz are not well described in the publications (CEPT reports, ITU-R reports). Some IEEE articles can be found, but each article usually deals with one or two specific models, a summary description of the propagtaion models covering 3.4-3.8 GHz frequency band is not available.
The working document towards a draft ECC report under development by EC-PT1 contains a section (section 4) propagation models which is still empty. This input docment provides a list of propagation models and the analysis of the validity of several propagation models for 3.4-3.8 GHz band based on the comparisons between propagation models, as well the comprison of the propagation models with measurement data. Based on the analysis of the validity of the propagation models, appropriate propagation models are proposed for different environments and different types of cells (Macro, Micro, Femto) in the 3.4-3.8 GHz band BEM studies