Analysis of Novel User Detection Scheme Based on Polling for E-MBMS Networks

Multimedia broadcast/multicast service (MBMS) is an important part of the UTRAN evolution and supports downlink streaming and download-and-play type services to large groups of users. For enhanced MBMS (E-MBMS) under 3GPP long term evolution (LTE) system, there are two ways to transmissions being performed: multi-cell transmissions and single-cell transmissions. One requirement identified to be supported is that the capability of the network to detect at least one MBMS user interested receiving one given MBMS service in the cell which belongs to above scenarios. It is significant to avoid unnecessary MBMS transmission in a cell where there is no MBMS user especially for single-cell transmissions mode. In this investigation, a low complex method is discussed to solve the detection on MBMS interested users in one cell and we also introduce code diversity strategy into the feedback signal transmission. Theoretical analysis and simulation results all show that the efficiency of proposed detection scheme is obvious which can dramatically reduce the average MBMS service polling time and control overhead.