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UDM - Unified Data Management -
A significant component of the 5G core network that stores
subscriber data and profiles.
UE - User Equipment -
A subscriber’s mobile device, such as a cell phone, tablet, or
modem.
UE Emulation -
The simulation of subscriber user equipment (UE) usage behaviors.
UF-OFDM - Universal Filtered Orthogonal Frequency Division Multiplexing -
A form of orthogonal frequency division multiplexing (OFDM)
modulation that improves out-of-band (OOB) characteristics by
filtering the frequency band.
UL - Uplink -
Uplink describes the direction of communication from a user’s handset to a DAS Head-End or BTS
UPCL - Uplink Classifier -
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.
UPF - User Plane Function -
The 5G equivalent of the packet gateway in a 4G LTE network.
The user plane function includes features to support packet
routing and forwarding, interconnection to other data networks,
and policy enforcement. Also known as the data plane.
uRLLC - Ultra-Reliable Low-Latency Communications -
One of three key use cases defined in 5G NR. uRLLC focuses
on applications that require fail-safe, real-time communications.
Examples include remote surgery, industrial internet, smart
grids, infrastructure protection, intelligent transportation
systems and autonomous vehicles.
UW-OFDM - Unique Word Orthogonal Frequency Division Multiplexing -
An orthogonal frequency division (OFDM) multiplexing
technique that uses an arbitrary deterministic sequence as the
guard interval rather than the random cyclic prefixes used in
cyclic prefix OFDM (CP-OFDM). UW-OFDM provides the same
benefits as CP — including protecting the OFDM signals from
intersymbol interference (ISI). CP-OFDM offers benefits for
synchronization and channel estimation purposes since it uses
known sequences.
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