Resource selection or reselection for sidelink discontinuous reception operation on multi-hop wtru to wtru relays

EP4759060A1Pending Publication Date: 2026-06-17INTERDIGITAL PATENT HOLDINGS INC
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
INTERDIGITAL PATENT HOLDINGS INC
Filing Date
2024-08-06
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing wireless communication systems face challenges in efficiently determining sidelink resources for multi-hop WTRU to WTRU relays, particularly when priority values of sidelink logical channels are lower than a threshold, leading to suboptimal resource allocation and increased latency.

Method used

A wireless transmit/receive unit (WTRU) determines sidelink resources by considering the active times of multiple RX WTRUs, relaying latency, and packet delay budget, and performs resource reselection if the selected resource is outside the effective active time, ensuring optimal resource utilization and reduced latency.

Benefits of technology

This approach enables efficient sidelink resource allocation, reducing latency and improving overall communication performance in multi-hop WTRU to WTRU relay scenarios by aligning resource selection with the active times and latency considerations of involved WTRUs.

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Abstract

A wireless transmit / receive unit (WTRU) may determine that a sidelink (SL) logical channel is associated with an SL transmission to be relayed through a first RX WTRU to a second RX WTRU. The WTRU may determine a first SL discontinuous reception (DRX) configuration associated with the first RX WTRU and a second SL DRX configuration associated with the second RX WTRU. The first SL DRX configuration may indicate a first active time, and the second SL DRX configuration may indicate a second active time. Based on a priority value of the SL logical channel being lower than a threshold value, the WTRU may determine an SL resource for the SL transmission based on one or more of the first active time, the second active time, a relaying latency associated with the first RX WTRU, or a packet delay budget (PDB) associated with the SL logical channel.
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