LTE: Difference between GTP v2 and GTP' v2 ?

Question

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?

Answer 1

GTPv2 will be used to carry control messages that is related for MME and SPGW where as GTP' or GTP prime will be used to communicate CHARGING GW