name: BBU
full_form: Baseband Unit
context: RAN4 will investigate both unidirectional and bidirectional deployment scenarios for FR2 HST. The exact understanding and definition of HST still needs further discussion based on the following interpretations: - HST Interpretation-1: All RRHs under one BBU transmit the same signal (SFN). - Selected RRH(s) for TX, depending on DPS Tx mode is used or not. - HST Interpretation-2: All RRHs under one BBU in the same cell ID, but for different TCI. - Other interpretation is not precluded. For full SFN JT and unidirectional RRH deployment, only consider following scenario: - The setting with only one TCI state transmission. The value of Ds_offset implicitly limit the RRH beam direction, so there is no need to introduce additional restriction on RRH beamâs possible range of angle on azimuthal plane.
description: The Baseband Unit (BBU) is a network function responsible for processing and managing baseband signals in a radio access network. It controls multiple Remote Radio Heads (RRHs) and coordinates their transmission to provide seamless coverage and capacity.
explanation: BBU is classified as a Network Function based on its role in controlling and coordinating RRHs, as described in the context from 3GPP TS 38.854. The text highlights the BBU's responsibility for managing signal transmission across multiple RRHs, which aligns with the definition of a Network Function.
section_title: 5.2HST scenario and RRH parameters
biotag_Context: B-Organization,O,O,O,O,O,O,O,O,O,B-Measurement,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O