| 2 | ==== Terminology ==== |
| 3 | 1. !OpenAirInterface (OAI) |
| 4 | 1. !OpenAirInterface Software Alliance (OSA) |
| 5 | 1. Core 3GPP cellular protocol (EPC) |
| 6 | 1. Access Network cellular protocol (EUTRAN) |
| 7 | 1. OSA's EPC software openairCN (CN) |
| 8 | 1. OSA's Access Network software openair5g |
| 9 | 1. eNB (eNodeB, Evolved Node B) |
| 10 | 1. The hardware that is connected to the mobile phone network, that communicates directly with mobile handsets (UEs), like a base transceiver station (BTS) in GSM networks. |
| 11 | 1. UE User Equipment, |
| 12 | 1. any device used directly by an end user to communicate. Connects to eNB. |
| 13 | 1. MME |
| 14 | 1. Mobility Management Entity, Control node for LTE access-network, chooses SGW for UE |
| 15 | 1. HSS |
| 16 | 1. Home Subscriber server, central database that contains user / subscription info. |
| 17 | 1. SGw |
| 18 | 1. Serving Gateway, routes and forwards user data packets, mobility anchor during enodeb handover |
| 19 | 1. PGw |
| 20 | 1. PDN gateway, connects UE to extenal data networks, point of exit and entry for traffic. UE can have more than one. |