LTE idle mode optimization improving end user experiences

This paper presents the methodology of defining the measurement trigger conditions and evaluation conditions of LTE cell reselection for release 9 capable UEs. In the proposal of cell reselection parameters, the RSRQ measurement quantity is considered to account for the increase of packet traffic in LTE networks. In addition, the proposal is designed to improve the end user experiences such the LTE camp-on ratio, the avoidance of unnecessary cell reselection measurements causing the battery drain and the ping-pong effect between LTE and WCDMA inter-RAT cell reselection or redirection. The cell reselection parameter proposal is made based on the field test data collected in Tokyo metropolitan area.