Multi-hop user equipment to network relay

WO2026038118A1PCT designated stage Publication Date: 2026-02-19NOKIA TECHNOLOGIES OY
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Patent Information

Application Number
PCT/IB2025/058124
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-16
Filing Date
2025-08-08
Publication Date
2026-02-19

AI Technical Summary

Technical Problem

Existing mobile telecommunication systems lack support for up to two additional hop relays in multi-hop user equipment to network relay (U2N) scenarios, with previous solutions failing to provide backward compatibility to Rel-17 U2N relay UE and remote UE, and requiring minimal standardization impacts.

Method used

Enhancements to Rel-17/18 L2 U2N relay functionalities to support up to two additional hop relays, allowing Rel-19 U2N relay UEs to operate as intermediate relays by transmitting specific relay discovery messages based on conditions, including separate or combined Rel-17/18 and Rel-19 message formats.

Benefits of technology

Enables efficient and scalable multi-hop operations with backward compatibility, supporting flexible hop counts and minimizing standardization efforts, while maintaining connectivity and reducing latency in multi-hop networks.

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Abstract

Systems, methods, apparatuses, and computer program products for multi-hop (MH) user equipment (UE) to network relay (U2N). A method may include determining based on a condition, by a user equipment, at least one protocol version, out of at least two protocol versions, for at least one relay discovery message to be transmitted in a sidelink based relay associated with a serving network element. The method may also include transmitting, by the user equipment, the at least one relay discover message according to the determined at least one protocol version.
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Citation Information

Patent Citations

  • Communication method and related equipment

    CN115696493A

  • Electronic device performing network access operation and operation method thereof

    WO2022220436A1