What is MME in EPC?

An MME is a critical network function, which deals with the EPC control plane. Its role is to manage sessions, authentication, paging, mobility, bearers and roaming. It manages an eNB and an S-GW through the S1-MME and S11 interfaces respectively, and communicates with HSS through the S6 interface.

What is MME and SGW?

MME stands for Mobility Management Entity, PGW stands for PDN gateway and SGW stands for Serving Gateway. The figure depicts LTE EPS architecture. In the figure, UE refers to User Equipment. It is the mobile phone device used to access the LTE network.

What does LTE MME stand for?

MME (Mobility Management Entity):The MME is an important controller node in the LTE network. It is responsible for: Idle mode UE (User Equipment) tracking. Paging procedure such as re-transmissions. Bearer activation and deactivation process.

What is MME in 5G?

With the functionality of the 4G Mobility Management Entity (MME) now decomposed, the 5G Core Access and Mobility Management Function (AMF) receives all connection and session related information from the User Equipment (UE) (N1/N2) but is responsible only for handling connection and mobility management tasks.

What is PGW in 5G?

PGW (Packet Network Data Gateway) – is the boundary between the EPC and the external packet network (Internet). PGW is responsible for assigning IP addresses to terminals, filtering / inspecting packets, supporting selected functionalities in the network and charging for their use.

What are the goals of LTE?

The goals for LTE include improving spectral efficiency, lowering costs, improving services, making use of new spectrum and reformed spectrum opportunities, and better integration with other open standards.

What does AMF do in 5G?

What is the function of AMF in 5G?

Access and Mobility Management function (AMF) supports: Termination of NAS signalling, NAS ciphering & integrity protection, registration management, connection management, mobility management, access authentication and authorization, security context management.

What are the functions of the LTE EPC?

The LTE EPC comprises several network elements listed below. The Mobility management Entity (MME) serves the UE providing mobility and session management. The S-GW transports user traffic between the 4G RAN and the P-GW. The P-GW transports user traffic between the S-GW and external data networks, for example the internet or IMS.

What are the functions of Mme in LTE?

1 It keeps track of UEs which are registered on LTE network. 2 It takes care of user requests for network access. 3 It authenticates and authorizes users on the network. 4 It does selection of S-GW and P-GW to be used for given session. 5 A user can be registered or located with only one MME at a time.

How are Mme functions distributed in 4G EPC?

As shown in the diagram, the MME functions have essentially been distributed among the AMF, the SMF, and the AUSF. The two gateways in the 4G EPC, S-GW and P-GW, have both been combined and split into control plane and user plane functions, and absorbed into the SMF and the UPF.

What is the Evolved Packet Core in LTE?

Evolved Packet Core (LTE EPC) What is EPC in LTE? The EPC represents the Core of an LTE network. It is formed by multiple nodes, the main ones being MME, SGW, PGW and HSS.