Network Elements Flashcards
What is a gNodeB?
A gNodeB is the functional equivalent of a base station in a traditional cellular network. A gNodeB is responsible for radio communication with UEs in its coverage area, known as a cell.
What is a UPF?
The 5G User Plane Function (UPF) is the function that does all of the work to connect the actual data coming over the Radio Area Network (RAN) to the Internet. The UPF receives data from the gNodeB through the N3 Interface. The UPF sends data to local networks through N6,
What is the SMF?
The Session Management Function (SMF) is a fundamental element of the 5G SBA, with three primary responsibilities/functions: Interacting with the decoupled data plane; PDU Session Management; and. Managing session context with the User Plane Function (UPF)
What is the AMF?
The Access & Mobility Management Function, or AMF, is a control plane function in the 5G core network that handles connection and management mobility tasks
What is the UDM?
Unified Data Management ( UDM ) is a centralised way to control network user data. It is like 4G/ LTE ‘s Home Subscriber Service ( HSS ) but is cloud-native and designed for 5G. The function of the HSS in the 5G network is split into the Authentication Server Function ( AUSF ) and the UDM .
What is the AUSF?
A major component of the 5G core network used to facilitate security processes. The AUSF (Authentication Server Function) authenticates UEs and stores authentication keys.
What is the NSSF in 5G?
The NSSF can be used by the AMF (Core Access and Mobility Management Function) to assist with the selection of the Network Slice instances that will serve a particular device
What is the Policy Control Function(PCF)?
The main functions of the PCF include: Implement end-to-end policy management, from devices to applications. Define policies for different slices, supporting diverse 5G use cases such as enhanced mobile broadband (EMBB), ultra-reliable and low-latency communication (URLLC), massive IoT, and more.
What is 5G NR?
5G NR (New Radio) is a new radio access technology (RAT) developed by 3GPP for the 5G (fifth generation) mobile network.[1] It was designed to be the global standard for the air interface of 5G networks.[2] As with 4G (LTE), it is based on OFDM.
What is 5G NSA?
The non-standalone (NSA) mode of 5G NR refers to an option of 5G NR deployment that depends on the control plane of an existing 4G LTE network for control functions, while 5G NR is exclusively focused on the user plane.
What is NR NSA Ran Option 3x
OPTION 3X
Many Mobile Operators begin their 5G journey by deploying option 3x Non-Standalone Architecture. In this option, the 5G New Radio is deployed alongside a 4G LTE radio and with both radios supported by the existing EPC.
In 5G what is the control Plane vs the User Plan vs the Management plane?
The control plane carries the signaling traffic, the user plane the user data (which is the content of communications), and the management plane the administrative traffic. The administrative traffic contains configuration and control commands for RAN and core functions.
What is Dual Connectivity wrt 5G?
Dual Connectivity (DC) is a feature that was first introduced in LTE (Release 12) to allow a UE to be connected to two eNBs and send/receive packets via both eNBs. The eNBs are connected via a non-ideal backhaul.
In 5G (Release 15), this concept was expanded so that a UE can be connected to both LTE E-UTRA and 5G NR nodes. The Core Network (CN) is either LTE EPC or 5G Core. This was later expanded so that both cells can belong to 5G NR, in which case the CN is exclusively 5G Core. These various options come under the general term Multi-Radio Dual Connectivity (MR-DC). MR-DC is a generalization of Intra-E-UTRA Dual Connectivity.
MR-DC can offer a UE more resources for higher throughput. More commonly, it helps operators improve mobility robustness and handovers in macro/micro-cell deployments. It aids in migrating their networks from 4G to 5G.
What does the F1 interface do?
5G NR F1 Interface
Functions: -F1 interface defines inter-connection of a gNB-CU and a gNB-DU supplied by different manufacturers. -It supports control plane and user plane separation. -It separates Radio Network Layer and Transport Network Layer.
In 5G, what is an up link classifier (ULCL)?
Network functionality supported by the user plane function (UPF) that diverts traffic to local data networks based on filters applied to the user equipment traffic.
