Deployment architectures | Centralized functions | Distributed functions |
Completely centralized | SGSN + GGSN MME + SGW + PGW |
|
Completely distributed |
| MME + SGSN + GGSN SGW + PGW |
Centralized bearer/distributed control (traditional 3G) | SGW + PGW + GGSN | MME + SGSN |
Centralized control/distributed bearer | MME | PGW + SGW |