What is SGs interface?
The SGs interface is an optional interface between a 2G (GERAN) / 3G (UTRAN) MSC and an LTE/EPC MME. It’s purpose is to facilitate both CSFB (Circuit-Switched Fall Back) and SMSoS (SMS over SGs).
What is SGi LTE?
SGi:- It is the reference point between the PDN GW and the packet data network. Packet data network may be an operator external public or private packet data network or an intra operator packet data network, e.g. for provision of IMS services. This reference point corresponds to Gi for 3GPP accesses.
What is MME in telecom?
MME (Mobility Management Entity) The MME is the key control-node for the LTE access-network. It is responsible for idle mode User Equipment (UE) paging and tagging procedure including retransmissions.
What is the interface between PGW and PCRF?
Interface between the PGW and the Policy and Charging Rules Function (PCRF). In particular, this is the interface between the Policy Control Enforcement Function (PCEF) or the PGW and the PCRF. Operational and maintenance interface, used to manage the device. Interface between the PGW and any packet data network.
What is the difference between CSFB and Srvcc?
The CSFB is applicable in case of a new call. It works when there is no active voice call. When a user is on the LTE network and initiates a new call request, a switch is initiated to a legacy network like 2G or 3G. SRVCC, on the other hand, is applicable when there is an active voice call on LTE.
What is SGsAP protocol?
SGsAP is designed to facilitate mobility management and paging procedures on the SGs interface, as part of CSFB (Circuit Switched Fallback) operation. In addition, SGsAP permits the transfer of SMS delivery via the circuit switched core network when IP based messaging services are not available.
What is the difference between 3G and 4 g?
The difference between 3G and 4G is that 4G means you can do everything 3G can but faster and smoother than ever before. Web pages load quicker, you can download content within seconds and streaming video and music is free of buffering.
What is S GW 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 MME and HSS?
· The MME (Mobility Management Entity) · The HSS (Home Subscriber Server) · The Serving Gateway.
What is S5 interface?
S5 interface It provides user plane tunnelling and tunnel management between Serving GW and PDN GW. It is used for Serving GW relocation due to UE mobility and if the Serving GW needs to connect to a non-collocated PDN GW for the required PDN connectivity.
Which interface is based on AAA protocol?
Access Network AAA (AN-AAA): Communicates with the RNC in the Access Network (AN) to enable authentication and authorization functions to be performed at the AN. The interface between AN and AN-AAA is known as the A12 interface.
What is the purpose of the SGS application protocol?
SGs Application Protocol SGsAP is designed to facilitate mobility management and paging procedures on the SGs interface, as part of CSFB (Circuit Switched Fallback) operation. In addition, SGsAP permits the transfer of SMS delivery via the circuit switched core network when IP based messaging services are not available.
What do you need to know about the SGS interface?
SGs is a stateless interface. The SGs application implements the following SGsAP procedures when associations between a UE and an MME and/or VLR have been established: Service Request. A complete set of events that can be generated with the SGs interface application can be found here.
How is the SGS interface used in VLR testing?
VLR/MSC Testing (Client Simulation) The SGs Interface application can be used to simulate an MME’s SGs interface to determine the impact of new VLR features and standards before they are deployed in a network.
Where is the sgsap gateway located in the network?
The SGsAP gateway is positioned between a mobile management entity (MME) on a long term evolution (LTE) network and a short message service center (SMSC)/home location register (HLR) on a circuit-switched (CS) network to permit SMS messages to be passed between the two domains.