Sidelink Positioning Resource Pools for Radio Link Disturbances

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Solution Overview

Problem

Existing sidelink positioning techniques are vulnerable to disturbances in the radio link between radio devices and the radio access network, leading to failures in positioning services.

Innovation Solution

A method and device for handling sidelink positioning procedures by obtaining information on link distortions and performing actions to mitigate these disturbances, such as using dedicated or exceptional resource pools and adjusting SL resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the RAN allocates radio resources for SL positioning to orchestrate radio devices, then interference is reduced and throughput is maximized, but a disturbance in the radio link between radio device and RAN leads to failure of SL positioning service

Engineering Contradiction:

Improvepositioning service reliabilityVSAvoidradio link disturbance impact

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments SL positioning resources into normal resource pools and exceptional resource pools. The exceptional resource pool is specifically allocated for use when radio link disturbances occur, allowing the system to maintain positioning services during handovers or RRC re-establishment events without interfering with normal operations

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs preliminary action by pre-configuring exceptional SL positioning resource pools before radio link disturbances occur. When a disturbance is detected, the radio device can immediately switch to using these pre-prepared exceptional resources, avoiding service interruption without requiring real-time resource allocation negotiations

Inventive Principle:

Principle #10Preliminary action

2Productivity

If SL positioning resources are allocated through RAN to minimize transmit collisions and maximize throughput, then resource allocation efficiency is improved, but handovers or RRC re-establishment cause interruptions in positioning service

Engineering Contradiction:

Improvepositioning resource allocation efficiencyVSAvoidpositioning service interruption time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

Exceptional SL positioning resource pools are pre-configured and made available before handovers or RRC re-establishment events occur. This preliminary preparation ensures that when disturbances happen, devices can immediately switch to exceptional resources without waiting for real-time resource allocation, thus eliminating service interruptions

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The exceptional resource pool acts as an intermediary resource that bridges the gap during handovers or RRC re-establishment events. It provides a temporary but functional resource allocation that maintains positioning services during the transition period when normal RAN-controlled resources are unavailable

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260059484A1Sidelink positioning technique

Publication Date: 2026.02.26 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A technique for handling a sidelink, SL, positioning procedure is described. As to a method aspect of the technique, information indicative of a distortion of a radio link of at least one radio device among radio devices involved in the SL positioning procedure is obtained. One or more actions that handle the distortion based on the obtained information are performed.