UDM – Unified data management
What is UDM? The UDM is the 5G Core network function that serves as the master repository for subscriber data — including authentication credentials, subscription
UE – User equipment
What is UE? User Equipment (UE) is the 3GPP term for any device that connects to the mobile network using a standardised radio interface. In
UE emulation
What is UE Emulation? UE emulation is the simulation of subscriber device (UE) behaviour using test equipment that mimics the signalling, traffic patterns, and RF
UF-OFDM – Universal filtered orthogonal frequency division multiplexing
What is UF-OFDM? UF-OFDM (Universal Filtered OFDM) is a multicarrier modulation technique that improves the out-of-band characteristics of OFDM by applying filtering to groups of
UL – Uplink
What is UL – Uplink? Uplink (UL) is the transmission direction from the User Equipment (UE) to the base station (gNB in 5G). It carries
UPCL – Uplink classifier
What is UPCL? UPCL (Uplink Classifier) is a network functionality supported by the UPF (User Plane Function) that classifies and diverts specific user traffic to
UPF – User plane function
What is UPF? The UPF is the 5G Core network function responsible for all user plane data processing and forwarding. It is the gateway between
Uplink Traffic Flow Template
An Uplink Traffic Flow Template (UL TFT) comprises a set of uplink packet filters defined within a TFT. Similarly, a Downlink TFT (DL TFT) consists
uRLLC – Ultra-reliable low-latency communications
What is uRLLC? uRLLC is one of the three fundamental 5G use case categories defined by IMT-2020. It targets applications that simultaneously demand near-zero latency
UW-OFDM – Unique word orthogonal frequency division multiplexing
What is UW-OFDM? UW-OFDM (Unique Word OFDM) is a multicarrier modulation variant that replaces the random cyclic prefix (CP) used in conventional CP-OFDM with a
