Common terms & acronyms used in wireless industry

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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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