name: DSR
full_form: Delay Status Report
context: below remainingTimeThreshold of the LCG; and 1> if there is no DSR pending for the LCG since the last transmission of a DSR MAC CE: 2> trigger a DSR for the LCG. If there is at least one DSR pending, the MAC entity shall: 1> if UL-SCH resources are available for a new transmission and the UL-SCH resources can accommodate the DSR MAC CE plus its subheader as a result of logical channel prioritization: 2> instruct the Multiplexing and Assembly procedure to generate the DSR MAC CE; 1> else if there is no pending SR already triggered by the DSR procedure for the same logical channel as of this DSR: 2> trigger a Scheduling Request. NOTE: The availability of UL-SCH resources for the transmission of the DSR MAC CE follows the same critieria specified in clause 5.4.5. An SDU is considered to be associated with a DSR if it is associated with the LCG which triggered the DSR and the remaining value of its PDCP discardTimer is below remainingTimeThreshold. A MAC PDU shall contain at most one DSR
description: A Delay Status Report (DSR) is a type of signaling message used in telecommunications to report the delay status of logical channels. It is triggered when certain conditions are met, such as when the remaining time threshold of a logical channel group (LCG) is reached.
explanation: The text describes the DSR as a message used to report delay status in telecommunications, indicating its function as a signaling mechanism.
section_title: 5.4.9Delay status reporting
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