name: BTS
full_form: Base Transceiver Station
context: Figure 26: Direct Transfer, RNC originated. Successful operation. If a UE - CN signalling message has to be sent from the RNC to the CN without interpretation, the RNC shall send a DIRECT TRANSFER message to the CN including the UE - CN signalling message as a NAS-PDU IE. If the DIRECT TRANSFER message shall be sent to the PS domain, the RNC shall also add the LAI and the RAC IEs, which were the last LAI + RAC indicated to the UE by the UTRAN via the current RRC connection, or if the UTRAN had not yet indicated any LAI + RAC to the UE via the current RRC connection, then the LAI + RAC of the cell via which the current RRC connection was established. If the DIRECT TRANSFER message is sent to the PS domain, the RNC shall also add a Service Area corresponding to at least one of the cells from which the UE is consuming radio resources. If the DIRECT TRANSFER message is sent in uplink direction, the RNC shall not include the SAPI IE. If the RNC has a co-located L-GW for LIPA operation, it
description: The Base Transceiver Station (BTS) transmits and receives signals to and from Mobile Stations (MS). It communicates with the Base Station Controller (BSC) via layer 3 signals, measures frame time differences, and notifies the BSC for chip synchronization on the forward link channel.
explanation: The BTS interacts with other network elements (MS and BSC), manages signal transmission and reception, and participates in procedures like soft handover and chip synchronization. These functions align with the definition of a Network Function.
section_title: Soft handover
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biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,I-Network Function,I-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