name: UMD
full_form: Unacknowledged Mode Data
context: The Sender shall terminate the SDU discard with explicit signalling procedure if one of the following criteria is fulfilled: - a STATUS PDU/piggybacked STATUS PDU containing an MRW_ACK SUFI is received, and the SN_ACK field in the received MRW_ACK SUFI > the SN_MRWLENGTH field in the transmitted MRW_SUFI, and the N field in the received MRW_ACK SUFI is set equal to "0000"; - a STATUS PDU/piggybacked STATUS PDU containing an MRW_ACK SUFI is received, and the SN_ACK field in the received MRW_ACK SUFI = the SN_MRWLENGTH field in the transmitted MRW_SUFI, and the N field in the received MRW_ACK SUFI is set equal to the NLENGTH field in the transmitted MRW SUFI; - a STATUS PDU/piggybacked STATUS PDU containing an ACK SUFI is received, and this STATUS PDU/piggybacked STATUS PDU indicates that all AMD PDUs up to and including the AMD PDU with "Sequence Number" equal to (SN_MRWLENGTH field in the transmitted MRW SUFI) â 1 has been received or discarded by the peer entity. Upon termination of
description: Unacknowledged Mode Data (UMD) refers to the protocol mechanism in the Radio Link Control (RLC) layer for transmitting data in unacknowledged mode. In this context, UMD is used to describe the process of segmenting and concatenating RLC SDUs into UMD PDUs of appropriate size for transmission over the air interface.
explanation: The provided text describes how UMD operates within the RLC layer to manage data transmission, including segmentation and size constraints. This detailed description of a specific mechanism for data transfer aligns with the definition of a protocol.
section_title: 4.2.1.2.1	Transmitting UM RLC entity
biotag_Context: O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,B-Connection,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,B-Procedure,O,O,O,O,O,O,B-Connection,O,O,B-Message,B-Message,O,O,O,O,O,O,O,B-Connection,O,O,O,B-Protocol,O,O,O,O,O,O,B-Protocol,B-Connection,O,O,O,O,O,O,O,O,O,O,B-Procedure,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O
biotag_Description: B-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,O,B-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,B-Protocol,O,O,O,O,O,O,O,O,O,O