name: CCCH
full_form: Common Control Channel
context: In the following, it is assumed that coverage of the OFDM DL carrier is identical to that of the associated WCDMA cell i.e. it is assumed that there is sufficient power margin in the downlink to cope with the pathloss difference between different bands (if OFDM and WCDMA are deployed in different bands) and also potential difference due to the use of OFDM instead of WCDMA. Therefore no particular assumption is made in terms of frequency bands for both WCDMA and OFDM i.e. the following is meant to cover all deployment scenarios: WCDMA UL in core band WCDMA DL in core band OFDM in core band WCDMA UL in core band WCDMA DL in core band OFDM in new band WCDMA UL in new band WCDMA DL in new band OFDM in new band WCDMA in new band WCDMA in new band OFDM in core band In the framework of the Study Item, OFDM is used in conjunction with HSDPA channels. This has a number of implications: - Access procedures as well as radio bearer setup are performed on the WCDMA carrier. Subsequently a
description: The Common Control Channel (CCCH) is a logical channel in the UMTS (Universal Mobile Telecommunications System) that carries control information between the network and user equipment. It is used for various purposes such as call setup, handover, and other signaling procedures.
explanation: The text explicitly states that CCCH is a 'logical channel' within the UMTS system, responsible for transmitting 'control information'. This aligns with the definition of a telecommunications channel.
section_title: 9.2.1.4	MAC header for CCCH
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