S10 will be used only for connect MMEs, so in architecture level S10 will play a role in ONE to MANY or MANY to MANY.
As per LTE core network architecture, MME shares S11 interface with SGW and SGW has S5/S8 interface with PGW. I went through Create Session Response message sent by SGW to MME and found PGW-C and PGW-U tunnel ids. I want to know what MME does with these PGW-C and PGW-U tunnel Ids ?
We know, in lte, an eNodeB can connect to multiple MMEs. Can someone please explain in details ? Apart from load balancing, is there any other reason ?