name: LCI
full_form: Layer Convergence Information
context: The OFDM frequency band is divided into NB sub-bands by grouping OFDM subcarriers. Each sub-band and each OFDM symbol interval constitute together an OFDM unit. This means that in each OFDM symbol interval at most NB parallel OFDM units can be transmitted. Three different essential steps for the physical channel mapping are identified: 1. The QAM symbols, obtained in the constellation mapping, are mapped onto a number of OFDM units. 2. The OFDM unit interleaver permutes the QAM symbols in the consecutive OFDM units obtained after the previous step. 3. The time-frequency mapping of OFDM units puts each OFDM unit at a unique position in available time-frequency space. Each physical channel should have a separate, non-overlapping time-frequency mapping. The OFDM unit interleaver and time-frequency mapping constitute together a time-frequency interleaver of OFDM units.
description: Layer Convergence Information (LCI) is a parameter used in Multimedia Broadcast Multicast Services (MBMS) to inform User Equipment (UEs) about the preferred layers or frequencies for receiving MBMS services. The LCI is signalled by the Controlling Radio Network Controller (CRNC) to UEs over the Iu interface and is taken into account by UEs in specific states, such as Idle mode, URA_PCH, CELL_PCH, and CELL_FACH. The LCI affects UE cell re-selection procedures and is used in conjunction with other parameters, like Sintersearch, to determine the preferred layers for MBMS services.
explanation: LCI is classified as a Parameter because it is a specific piece of information signalled by the network to UEs, influencing their behavior in terms of cell re-selection and service reception. The context highlights its role in MBMS services, its signalling mechanism, and its impact on UE procedures.
section_title: 11.2	Frequency layer Convergence
biotag_Context: O,B-Technology,O,O,O,O,O,B-Network Function,O,O,O,B-Technology,O,O,O,O,O,B-Technology,O,O,O,O,O,B-Technology,O,O,O,O,O,O,B-Technology,O,O,O,O,B-Network Function,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,B-Technology,O,O,O,O,B-Technology,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,B-Technology,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,O,O,O,O,O,O,B-Technology,O
biotag_Description: B-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,B-Service,O,O,O,O,O,B-Device,I-Device,O,O,O,O,O,O,O,O,O,B-Service,O,O,B-Parameter,O,O,O,O,O,B-Network Function,I-Network Function,I-Network Function,O,O,B-Device,O,O,B-Interface,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O