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Can SGW and MBMS-GW be combined ?

+5 votes
76 views

In LTE, SGW creates a tunnel for for an UE with eNodeB and while MBMS-GW multicasts IP-packets. Can both be coupled together and kept within the same box ?

posted Oct 3, 2014 by Harshita

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+1 vote

In LTE network, SGW and PGW nodes have been defined as two separate entities. Would those be separate nodes for deployment or combined ?

+1 vote

Hi all

I find some information on internet of this question "What pros and cons of combined S-GW/P-GW?".
However it did not write the reasons.

I find this answer in http://www.cisco.com/c/dam/en/us/solutions/service-provider/mobile-internet/whitepaper_c11-577763_v1.pdf

It said that combined S-GW/P-GW have these advantages:
Reduced signaling overhead (S5 and S8 would be internal)
Fewer hops on the bearer path
Less backhaul
Reduced signaling on the S7 interface
Lower session requirement for the PGW

I cannot understand why it can reduce signaling on the S7 interface.
and although I probably know other advantages' reason, I am not sure.
Someone please tell me.

thanks

+2 votes

Hi all

Because combined S-GW/P-GW is one node, so do we still need to implement the connection between them?
Is it necessary for core network to implement GTP-based or PMIP based S5/S8 interface if it is combined S-GW/P-GW?

Is there any 3GPP spec mention about combined S-GW/P-GW? what is the cons and reasons to do this?

thanks

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