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Recently, multimedia broadcasting traffic is explosively increasing since the performance of smartphones is significantly enhanced and capacity of mobile access network such as LTE is steeply increasing. We can accommodate the multimedia broadcasting traffic via general unicast scheme or eMBMS which is a broadcast-specific scheme. First, the unicast scheme provides higher spectral efficiency compared to the eMBMS. However, unfortunately, the efficiency of the unicast scheme dramatically decreases as the number of users increases. On the other hand, although the spectral efficiency of the eMBMS is lower than that of the unicast, it can serve many users with a channel. Thus, this paper defines and investigates the capacity efficiencies of the both schemes for multimedia broadcasting traffic. In addition, we derive the optimal number of users where the eMBMS can provide the higher capacity efficiency than that of the unicast scheme.

Analysis of Capacity Efficiency of Broadcasting Service in LTE Network