name: BCCH
full_form: Broadcast Control Channel
context: If only one CRS port is configured in a cell, the UE may assume that the same antenna port is used for all subframes in an RSS transmission in the cell. Otherwise, the UE may assume that the same antenna port is used for RSS transmission in absolute subframes and and . An RSS is transmitted in consecutive BL/CE DL subframes, starting in the first BL/CE DL subframe in a radio frame satisfying where the RSS periodicity and the RSS time offset are configured by higher layers. In frequency domain, the RSS frequency location is assigned to the 24 subcarriers in the physical resource blocks numbers and , as configured by higher layers. In each subframe used for RSS transmission, the RSS sequence shall be mapped to resource elements in sequence, starting with in increasing order of first the index , over the 24 assigned subcarriers and then the index . A resource element overlapping with resource elements where cell-specific reference signals according to clause 6.10 are transmitted shall not
description: The Broadcast Control Channel (BCCH) is a logical channel used for broadcasting control information to mobile devices in a cellular network. It is utilized by the base station to transmit system information and other control data to user equipment (UE). In the context of GSM, BCCH carriers are used for initial BSIC identification, where the UE attempts to decode the BSIC from the strongest BCCH carriers with unknown BSIC.
explanation: BCCH is classified as a Channel based on its role in broadcasting control information and system data to mobile devices. The provided context highlights its specific use in GSM networks for initial BSIC identification, further solidifying its classification as a channel.
section_title: 8.4.2.5.2.1	Initial BSIC identification
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