Table of Contents
What is PGW and SGW?
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 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 is PGW IP?
When the UE attaches to LTE network, an IP address is allocated to the UE by PGW to make easy data connectivity between the UE and Packet Data Network. First IP address which is assigned to the UE by a PGW during initial attach, it stays with the UE as long as the UE is attached to the LTE network.
What is the difference between GGSN and PGW?
P-GW—In 2G and 3G networks, the node that handled all user packets to and from the user equipment is called the GGSN. In the LTE architecture, this is the Packet Gateway (P-GW) or sometimes seen as the Packet Data Network Gateway (PDN-GW).
What is SGSN and GGSN in telecom?
A Gateway GPRS Support Node (GGSN) is part of the core network that connects GSM-based 3G networks to the Internet. The GGSN, sometimes known as a wireless router, works in tandem with the Serving GPRS Support Node (SGSN) to keep mobile users connected to the Internet and IP-based applications.
How PGW is selected in LTE?
The address of the PDN-GW could either be provided directly by the HSS, the use DNS to resolve the address during a bearer setup procedure or configured on the MME. PGW selection is performed by the MME/SGSN at initial attach or PDN connection establishment.
What is SMF and UPF?
The 5G Session Management Function (SMF) is a fundamental element of the 5G Service-Based Architecture (SBA). The SMF is primarily responsible for interacting with the decoupled data plane, creating updating and removing Protocol Data Unit (PDU) sessions and managing session context with the User Plane Function (UPF).
What is UPF in LTE?
The User Plane Function (UPF) is a fundamental component of a 3GPP 5G core infrastructure system architecture. CUPS decouples Packet Gateway (PGW) control and user plane functions, enabling the data forwarding component (PGW-U) to be decentralized.
What is the function of PGW?
In a mobile network, a major function of the Packet Data Network Gateway (P-GW) is to allocate IP addresses to the user equipment during default bearer setup. The user equipment can still connect to multiple packet networks through multiple P-GWs, and also to older, non-3GPP-compliant IP networks.
What is MSC and SGSN?
The Serving GPRS Support Node (SGSN) is a main component of the GPRS network, which handles all packet switched data within the network, e.g. the mobility management and authentication of the users. The SGSN performs the same functions as the MSC for voice traffic. The SGSN and the MSC are often co-located.
What is MSC and BSC in telecom?
Several BTS connect to BSC stations (Base Station Controller), while the BSC are connected to the MSC (Mobile Switching Center).