name: TMD
full_form: TM Data
context: Data field elements are mapped to the Data field in the order which they arrive to the RLC entity at the transmitter. For TMD PDU, UMD PDU and AMD PDU: - The granularity of the Data field size is one byte; - The maximum Data field size is the maximum size of a PDCP PDU. NOTE: In case the upper layer is BAP as specified in TS 38.340 [7] or SRAP as specified in TS 38.351 [9], the maximum Data field size can be larger than the maximum size of a PDCP PDU. For TMD PDU: - Only one RLC SDU can be mapped to the Data field of one TMD PDU. For UMD PDU, and AMD PDU: - Either of the following can be mapped to the Data field of one UMD PDU, or AMD PDU: - One RLC SDU; - One RLC SDU segment.
description: TMD (TM Data) is a type of message or data unit used in the Radio Link Control (RLC) entity for transmitting data over a radio link. It maps to the Data field and has rules about granularity and maximum size.
explanation: The text describes TMD as a specific type of data unit used for transmission within a defined protocol (RLC), making it a message.
section_title: 6.2.3.2Data field
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