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Joint Delivery of Unicast and E-MBMS Services in LTE Networks

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4 Author(s)
Monserrat, J.F. ; iTEAM Res. Inst., Univ. Politec. de Valencia, Valencia, Spain ; Calabuig, J. ; Fernandez-Aguilella, A. ; Gomez-Barquero, D.

Long Term Evolution (LTE) standard enhances Multimedia Broadcast Multicast Services (MBMS) to provide highly efficient transmission of multicast/broadcast services. This paper aims at clarifying which is the best option for the Enhanced MBMS (E-MBMS) network configuration according to the operator needs. Besides, it describes the main technical features of the new E-MBMS LTE standard, for both streaming and file delivery, and derives optimum operation modes. Some relevant conclusions are drawn from a set of simulation results calibrated with International Telecommunication Union Radiocommunication (ITU-R) guidelines. Regarding streaming delivery, results show that increasing the MBMS over a Single Frequency Network (MBSFN) area size allows employing a higher modulation and coding scheme level, which entails more streaming channels per MBSFN area. Concerning file delivery, results show that the reduction in the mean throughput of unicast users matches exactly the percentage of stolen subframes. Besides, the hybrid approach suggested in this paper improves the file delivery efficiency while eliminating the dependency on a MBMS threshold.

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Broadcasting, IEEE Transactions on  (Volume:58 ,  Issue: 2 )