name: PSSCH
full_form: Physical sidelink shared channel
context: be (pre-)configured with a set of CBR ranges to each of which is linked a CR-limit. When a UE finds its CR exceeds the CR-limit for the CBR range it currently measures, it must reduce its CR to not exceed the limit. How this is done is up to UE implementation, and can include increasing MCS to reduce resource occupation, dropping (re-)transmissions, etc. PPPP can also be (pre-)configured with a mapping to the UE's maximum permitted transmit power, the limitation on which acts to reduce the CBR measured by sufficiently distant UEs. PPPP is used as described in Clause 5.2.2 to aid distributed sidelink congestion control based on the relative priorities of traffic from UEs that consider occupying a given resource. PPPP and CBR can each also be (pre-)configured with mappings to ranges of values of transmission parameters, e.g. a range of MCS values, and/or a range of numbers of subchannels, etc. In this case, the UE has to choose its transmission parameters from within the range
description: The Physical Sidelink Shared Channel (PSSCH) is a channel used in Vehicle-to-Everything (V2X) communication, specifically for sidelink transmission. It is a shared channel that allows multiple devices to transmit data simultaneously. The PSSCH is subject to power control mechanisms, such as Maximum Power Reduction (MPR), to ensure efficient and reliable transmission.
explanation: The context describes PSSCH as a dedicated channel within V2X communication for sidelink data transmission, emphasizing its role in facilitating simultaneous data exchange between devices. This functionality aligns with the definition of a telecommunications channel.
section_title: 6.2.3G.1	MPR for Power class 3 V2X UE
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