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WHY MME USES UDP AS TRANSPORT PROTOCOL OVER SCTP TOWARDS SGW

+1 vote
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WHY MME USES UDP AS TRANSPORT PROTOCOL OVER SCTP TOWARDS SGW

posted Nov 27, 2015 by anonymous

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2 Answers

0 votes

Not sure if it is true that UDP is over SCTP, as far as I know it is GTPC-v2 over UDP over IP.

(Assuming you are correct then reason may be because SCTP is already connection oriented and another connection oriented (TCP) is not required)

answer Nov 27, 2015 by Salil Agrawal
My question is why MME uses UDP in control plane , why not SCTP?
GTP-C is already connection oriented designed in such a way that it takes care of re-transmission as per need etc so transport does not require to be connection oriented.
0 votes

I just want to add one more point that GTP protocol has "echo request/response messages" to check the health of link.
I meant to say that both the nodes having GTP based communication they periodically checks link connectivity since transport is not connection oriented which immediately notify to application if connection is not available.

answer Nov 27, 2015 by Harshita
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+4 votes

Out of three prominent advance transport protocols (TCP, UDP and SCTP) which is the best to use and why should i use that protocol ?

+1 vote

I recently come across advantages of SCTP over TCP and In telecommunication most of the real time interfaces require SCTP connection example eNB to MME.

But MME to SGW and SGW to PGW GTP-C is used as signaling protocol. Why SCTP not being used? What is the advantage of using GTP-C?

+2 votes

What reasoning could be behind not using the TCP/SCTP for GTPv2 protocol ?

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