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LTE-Broadcast (eMBMS) Network Reference Architecture
April 09, 2018 | By Chris Changmo Yoo (cmyoo@netmanias.com)
Comments (1)



AbdulKhadar Shaik @ LG Soft India via Li 2018-04-11 11:18:39

Very Good Technology for Broadcasting. Operators still behind for Full Commercialization business perspective.

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eMBMS Network Entities:
MCE (Multi-Cell/Multicast Coordination Entity) allocates radio resources that are used by all eNodeBs involved in a multicast transmission
MBMS GW (Multimedia Broadcast Multicast System Gateway) forwards multicast packets to the relevant eNodeBs
BM-SC (Broadcast/Multicast Service Centre) controls session establishment, service announcement, content delivery. It is therefore the heart of the LTE multicast delivery mechanism
MooD (MBMS operation on Demand) server receives consumption reporting message from the UE. Based on this information, eMBMS network can determines whether to turn on broadcast delivery or not in a specific MBMS service area
MSPV (MBMS Service ProVisioning) server manages (create/update/delete) the eMBMS service by providing service information to the BM-SC and MooD server
CDN (Content Delivery Network) provides contents caching to deliver DASH segment files to a large number of UEs via unicast (HTTP)
EPG (Electronics Program Guide) server provides EPG metadata to the UE
DRM (Digital Rights Management) server encrypts the broadcast channel (DASH segment files) to protect from illegal use of the eMBMS user. UE obtains DRM license (decrypted key) from DRM server
DASH (Dynamic Adaptive Streaming over HTTP) server creates the sequence of DASH segment files, each segment containing a short interval of playback (1s, 2s, ...)
Encoder changes the video format (e.g., codec, bitrate, resolution, etc.) received from the CP to fit the eMBMS service
CP (Content Provider) provides TV channels and movie clips to the eMBMS service provider (network operator)
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