Work

Enhancing Throughput in 5G-NTN through Early RLC Layer Retransmissions

Year: 2024

Type: conference-paper

Abstract: Lower layer retransmission schemes in 5G Non-Terrestrial Networks (5G-NTN), in particular Hybrid Automatic Repeat Request (HARQ) from the Medium Access Control (MAC) layer, are severely hampered by the large Round Trip Times (RTTs) imposed by satellite components. In this demonstration, we show that enabling Radio Link Control (RLC) layer retransmissions can significantly increase throughput without additional processing complexity. Using the OpenAirInterface (OAI) 5G-NTN suite, we showcase the effectiveness of RLC Acknowledged Mode (AM) retransmissions in facilitating early recovery of lost packets and maintaining reasonable Quality of Service (QoS), even in the absence of HARQ feedback from the MAC layer.

Source: Proceedings of the 28th Annual International Conference on Mobile Computing And Networking

DOI: 10.1145/3636534.3698842

Authors: Sumit Kumar, Ion Turcanu

Institution: Luxembourg Institute of Science and Technology

Language: English

Topic: Satellite Communication Systems

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

OpenAlex ID: W4405014350

FWCI: 1.73

Cites: 8

Cited by: 2

Related to: 10