2, 3G not written
4g network architecture
It is necessary to write down the positions of each network element and the interfaces between each network element.
The access between e-nodeB is MME and S-GW.
MME is also connected to HSS.
SGW P-GW IP server is connected to PCRF to form a triangular
access network:
E-UTRAN (Evolved UMTS Terrestrial Radio Access Network): Evolved UMTS Terrestrial Radio Access Network
eNodeB (Evolved Node B): Evolved Node B, referred to as eNB, the name of the base station in LTE
Core network:
EPC system, Evolution Packet Core, EPC network elements include MME, SGW, PGW, related network elements include HSS, PCRF
MEE (Mobility Management Entity): mobility management entity
Serving GW (Serving GateWay): Serving Gateway, referred to as SGW
PDN GW (Packet Data Network Gateway): Packet Data Gateway
HSS (Home Subscribers Server): Home Subscriber Server
PCRF (Policy and Charging Rules Function): Policy and Charging Rules Function
Interfaces:
X2: the interface between e-nodeB
S1: the interface between e-nodeB and core network EPC, the interface with MME is S1——MME, and the interface with SGW is S1——U S11
: the interface between MME and S-GW
PCRF interface: connected to SGW is Gxc. The connection to PGW is Gx. Connected to IP server is RX
S6a: interface between MME and HSS
S5/SGi: interface between S-GW and P-GW
SGi: interface between P-GW and IP server
5G network architecture
Need to know the Chinese translation corresponding to each network element
| abbreviation | English | Chinese |
|---|---|---|
| AMF | Access and Mobility Management Function | Access and mobility management functions |
| SMF | Session Management function | session management function |
| EXEC | Authentication Server Function | Authentication server function |
| UPF | The User plane function | user plane function |
| The User plane function | Policy Control function | policy control function |
| UDM | The Unified Data Management | Unified data management functions |
| NRF | NF Repository Function Network Repository Function | Network storage function |
| NSSF | The Network Slice Selection Function | Network slice selection function |
| OF | Application Function | application function |