Satellite handover enhancement methods for non-terrestrial networks in wireless communications

By reporting capability information to network nodes through user equipment and introducing redirection timers and extended satellite handover timers, the latency problem in satellite handover in NTN was resolved, ensuring smooth satellite handover.

CN122162324APending Publication Date: 2026-06-05MEDIATEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MEDIATEK INC
Filing Date
2024-11-01
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In non-terrestrial networks (NTN), there are issues with significant delays and satellite handover failures during satellite handover due to antenna reorientation delays, especially for VSAT user equipment.

Method used

User equipment reports capability information to network nodes. Based on the capability information, network nodes send satellite handover instructions and introduce a redirection timer and an extended satellite handover timer to complete the satellite handover after the antenna is redirected.

Benefits of technology

This reduces latency during satellite handover, ensuring that user equipment can correctly perform satellite handover after redirection operations, and avoiding wireless link failures.

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Abstract

Various solutions for satellite handover enhancements for non-terrestrial networks (NTNs) in wireless communications are described. A device can report user equipment (UE) capability information to network nodes associated with a first satellite and a second satellite. Subsequently, the device can receive a satellite handover indication from the first satellite. The satellite handover indication indicates a satellite handover from the first satellite to the second satellite. The device can also redirect an antenna to the second satellite for an antenna redirection duration and perform the satellite handover after the antenna redirection duration.
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