3GPP LTE中演进多媒体广播组播业务(E-MBMS)关键技术及融合组网方案研究

he Multimedia Broadcast Multicast Service proposed by The Third Generation Partnership Project (3GPP) is highly competitive in mobile TV field.With the progress of standardization of LTE, E-MBMS is proposed based on MBMS services.In this paper, E-MBMS network architecture and key technology are studied,and the advantages and disadvantages of E-MBMS service are analyzed.To solve the problems in E-MBMS,the paper present the proposal that using heterogeneous network for E-MBMS transmission.The network scheme can be used in heterogeneous WLAN networks to provide users with E-MBMS services. The scheme proposed can full use of the advantages of WLAN networks to make up for the lack of cellular networks, enhanced hot spot cover age, optimize network resources, especiallythe air interface resources.