What is EPS mobility management?
EMM (EPS Mobility Management) The EPS (Evolved Packet System) Mobility Management (EMM) protocol provides procedures for the control of mobility when the User Equipment (UE) uses the Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). It also provides control of security for the NAS protocols.
What is difference between NAS and as in LTE?
The distinction is that the Access Stratum is for dialogue explicitly between the mobile equipment and the radio network and the NAS is for dialogue between the mobile equipment and core network nodes. For LTE, the Technical Standard for NAS is 3GPP TS 24.301.
What is ECM in LTE?
ECM stands for EPS Connection Management and EMM stands for EPS Mobility Management in LTE technology. NAS is basically used to transport non radio signalling messages between UE and MME in LTE.
What is the function of MME?
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 EMM and ESM in LTE?
In LTE, the NAS protocol is used between the User Equipment and the MME in order to facilitate EPS Mobility Management and EPS Session Management procedures. Consequently, NAS protocol messages are classified as EMM or ESM, both of which can potentially be found in a single NAS message.
What is EPS LTE?
The LTE network called EPS (Evolved Packet System) is an end-to-end (E2E) all IP network; EPS is divided into two parts – LTE part which deals with the technology related to a radio access network (E-UTRAN) and EPC part which deals with the technology related to a core network.
What is EMM and ECM?
ECM stands for Entitled Control Message while EMM stands for Entitled Management Message. ECM EMM are the two most important part of CA System or Conditional Access System. ECM and EMM are send with the Transport Stream to the subscriber end.
What is SGW and P GW?
The SGW keeps context information such as parameters of the IP bearer and routing information, and stores the UE contexts when paging happens. It is also responsible for replicating user traffic for lawful interception. PGW (PDN Gateway):The PDN Gateway is the connecting node between UEs and external networks.
What is SIP in VoLTE?
SIP stands for Session Initiation Protocol (SIP) , In a VoLTE call SIP protocol is used to create, modify and terminate sessions, essentially negotiating a session between two users. SIP does not perform transport layer (delivering data) those are done by RTP/RTCP .
