A System Level Study on LDM for Mixed Broadcast-Broadband Service Delivery in 5G

The vision of the future 5G - Multicast Broadcast Services (5G-MBS) is to achieve full convergence of broadcast and broadband services by providing these services on the same infrastructure and dynamically switching between them without impacting user experiences. Using Layered Division Multiplexing (LDM) and a novel antenna precoding system, the 5G MIMO antenna can seamlessly combine wide coverage broadcast service and narrow-beam MIMO broadband service to improve spectrum efficiency. The LDM network can transmit a 2-layered signal where the higher power Core Layer (CL) transmits a Single Frequency Network (SFN) broadcast signal, and the lower power Enhanced Layer (EL) is used for broadband services. Full simulations of the 2-layered network using 3GPP self-evaluation Dense Urban - eMBB and Rural-eMBB reference scenarios show in both cases, the CL can provide three 4k video streaming services while supporting full broadband services in the EL.