LTE : Is ROHC applicable for every data packet or specific class of user data packets ?

Question

In case of MBMS services, Does the IP header compression applicable ? If yes then how it is done ?

Answer 1

Based on the profiles, RoHC is applicable to those specific data packets IP/UDP/RTP/TCP/ESP. These profiles are used for identifying packet headers.

Thanks - Ganesh

Comments

Thanks Ganesh to spend your time and sharing your knowledge. I have one related question "Does the eNodeB perform ROHC for multi casting and broadcasting data as well ? " If yes then fine and if not then why ?

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On my understanding on RoHC, its used to overcome the header size overhead in end to end data call.

For Multicasting/broadcasting its of no use I guess. Because RoHC technique is having its states and at the start it will be sending whole data, later header will be compressed and header size can be reduced over the communication with decompressor.

Can I know why you are expecting RoHC for MCasting/BCasting?

Thanks - Ganesh

Answer 2

As Ganesh mentioned it is based on the profiles and for each qci bearer.

Usually it is applied for QCI1 bearer in the field.