name: MSCCK
full_form: MBMS Sub- Channel Control Key
context: both an MKFC and as a MSCCK. - Allows multiple multicast bearers to share the same MSCCK without including that key in every bearer announcement message. This reduces the amount data transmitted over signalling bearers and the amount of key processing required. - Similarly, as UEs change MBSFN areas, this means that a (new or the same) MSCCK need not be redistributed in the bearer announcement message for the new area. This reduces the amount data transmitted over signalling bearers and the amount of key processing required. - Allows multiple groups to share the same MKFC. This reduces signalling by reducing the number of group key distribution messages required. - Allows key update of MSCCK without making a new bearer announcement message. Where the same key is used for multiple bearers/groups, this significantly reduces the number of messages required to update this key. In extremis, there could only be a single MKFC/MSCCK for protecting multicast signalling for all groups and all
description: The MBMS Sub-Channel Control Key (MSCCK) is a critical network attribute used in the Multicast/Broadcast Multimedia Service (MBMS) to control access to sub-channels. It plays a key role in managing multicast bearers, reducing signaling overhead, and optimizing key distribution.
explanation: The context describes MSCCK as a network attribute with a specific function: controlling sub-channel access within MBMS. Its impact on multicast bearer management, signaling efficiency, and key distribution further solidifies its classification as a Parameter due to its direct influence on network operation and configuration.
section_title: 7.2.2.4	Evaluation against requirements
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biotag_Description: O,B-Service,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,O,O,O