Method performed by access network node, method performed by user equipment, method performed by core network node, access network node, user equipment, and core network node

EP4751391A1Pending Publication Date: 2026-06-03NEC CORP
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
NEC CORP
Filing Date
2024-07-18
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Current communication systems face challenges in implementing store and forward techniques effectively, particularly in Non-Terrestrial Networks (NTN) due to discontinuous coverage and intermittent feeder links.

Method used

A method is introduced where access network nodes in NTNs receive and store user plane data when either the service link or feeder link is unavailable, without triggering a connection resume for another link, and forward the data when the link becomes available.

Benefits of technology

This approach enables efficient data transmission by allowing data to be stored and forwarded without interruptions, even in scenarios with discontinuous coverage and intermittent feeder links, thereby enhancing the reliability and effectiveness of communication in NTN systems.

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Abstract

A method performed by an access network node in a non-terrestrial network is disclosed. The method includes receiving, via an available link, user plane data, in a case where either a service link between the access network node and a user equipment, UE, or a feeder link between the access network node and a gateway in a terrestrial network is unavailable, without triggering of resuming a connection for another link than the available link; storing the user plane data until the another link becomes available; and forwarding, via the another link, the user plane data when the another link becomes available.
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