TDD in 5G LEO Satellite Networks: A Comparative Study of Guard-Period Strategies and Frame Durations

October 20, 2026·
Madyan Alsenwi
,
Jorge Querol
,
Eva Lagunas
· 1 min read
Abstract
This paper presents a comparative study of guard-period (GP) sizing rules (Worst-RTT, Adaptive Per-UE, and Minimum-RTT) and Extraordinary Downlink (xDL) guard-period reuse across 10–182 ms frame durations for Time-Division Duplex (TDD) in 5G NR Low Earth Orbit (LEO) satellite networks, supported by the European Space Agency (ESA) ARTES 4.0 Project CREST-5G.
Type
Publication
Ka and Broadband Communications Conference 2026
publication

Abstract & Overview

This paper presents a comparative study of guard-period (GP) sizing rules (Worst-RTT, Adaptive Per-UE, and Minimum-RTT) and Extraordinary Downlink (xDL) guard-period reuse across 10–182 ms frame durations for Time-Division Duplex (TDD) in 5G NR Low Earth Orbit (LEO) satellite networks, supported by the European Space Agency (ESA) ARTES 4.0 Project CREST-5G.

Publication Metadata

  • Authors: Madyan Alsenwi, Jorge Querol, Eva Lagunas
  • Venue: Ka and Broadband Communications Conference 2026 (2026)
  • Research Areas: 6G-NTN, Satellite Communications
6G-NTN Satellite Communications