Serving (S) System Architecture Evolution Gateway (GW)-
Some of the key roles of SGW are listed below:-
(1). SGW is responsible for handovers with neighboring eNodeB’s.
(2). Data transfer in terms of all packets across user plane.
(3). Mobility interface (or anchors) to other 3GPP systems (2G and 3G) etc.
(2). Data transfer in terms of all packets across user plane.
(3). Mobility interface (or anchors) to other 3GPP systems (2G and 3G) etc.
SGW also monitors and maintains context information related to the UE during idle state and generates paging requests when data for the UE arrives from the network (on Downlink).
SGW also performs replication of the user traffic in case of lawful interception.
Access more topics on 4G UMTS LTE Tutorial
Long Term Evolution (LTE), data rates, Core Air and Radio networks, seamless mobility, Evolved Packet core (EPC), SAE etc. Mobility Management Entity (MME), Serving SGW. Packet Data Network (PDN) SAE Enhanced Packet Data (ePDG)
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