Energy-efficiency MBMS Single Frequency Networks with User Cooperation

Multimedia Broadcast/Multicast Service (MBMS) has been introduced in the 3rd Generation Partnership Project (3GPP). To support Enhanced MBMS (EMBMS) in long Term Evolution (LTE), MBMS over a Single Frequency Network (MBSFN) is proposed to satisfy the high-speed data flow of multimedia service and improve the performance of users in the edge of MBSFN area. However, the proposed adaption is not ideal in situation where the Inter Site Distance (ISD) is quite large. In order to solve the problem, MBSFN model is established in this paper firstly. Next, the User Cooperation method is proposed which adopts positioning technology, the strategy of transmission radius selection and related technology to accomplish cooperation from the users who receive signals successfully to the users who lose signals because of the low SINR. Meanwhile, to decrease energy consumption in line with Green Communications, this paper also proposes Energy-efficiency MBSFN which not only saves the power of system, but also achieves higher performance compared with conventional MBSFN, by reducing the number of evolved Node B (eNB) which transmits MBMS signals and adopting the User Cooperation. Finally, the feasibility and superiority of the new MBSFN is verified by simulation.