name: HARQ
full_form: Hybrid Automatic Repeat Request
context: The PDU Set Error Rate (PSER) defines an upper bound for the rate of PDU Sets that have been processed by the sender of a link layer protocol (e.g. RLC in RAN of a 3GPP access) but that are not successfully delivered by the corresponding receiver to the upper layer (e.g. PDCP in RAN of a 3GPP access). Thus, the PSER defines an upper bound for a rate of non-congestion related PDU Set losses. The purpose of the PSER is to allow for appropriate link layer protocol configurations (e.g. RLC and HARQ in RAN of a 3GPP access). NOTE 1: In this Release, a PDU Set is considered as successfully delivered only when all PDUs of a PDU Set are delivered successfully. NOTE 2: How RAN enforces PSER is up to RAN implementation. A QoS Flow is associated with at most one PDU Set Error Rate value per direction. PSER is an optional parameter. If the PSER is available, the PSER supersedes the PER.
description: Hybrid Automatic Repeat Request (HARQ) is a Protocol used in the Radio Access Network (RAN) of a 3GPP access to manage link layer protocol configurations. It works in conjunction with other protocols like RLC to ensure efficient data transmission and minimize errors.
explanation: HARQ is classified as a Protocol because it is specifically mentioned in the context of managing link layer protocol configurations, which aligns with its role in error correction and retransmission processes within the RAN. Its mention alongside RLC further solidifies its categorization as a protocol, given their collaborative function in ensuring reliable data delivery.
section_title: 5.7.7.3 PDU Set Error Rate
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biotag_Description: B-Protocol,I-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,B-Network,I-Network,I-Network,O,O,O,B-Organization,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,O,O