NR Sidelink Resource Reselection Using LTE Sensing Sharing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently sharing sensing results between LTE and NR sidelinks within the same user equipment (UE), leading to suboptimal resource allocation and utilization.

Innovation Solution

Implementing methods and systems for intra-UE information sharing between LTE and NR sidelink modules, where the NR sidelink module requests or autonomously receives LTE sidelink sensing results, and configures intra-UE information sharing to utilize these results for resource selection, re-selection, and pre-emption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sensing results are shared between LTE and NR sidelink modules within the same UE, then resource allocation efficiency is improved, but system complexity increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system divides the sensing results sharing functionality into separate modules: an LTE sidelink module that performs sensing in LTE resources and an NR sidelink module that performs sensing in NR resources. These modules operate independently but share sensing results through a defined interface, reducing the complexity of a monolithic system while enabling efficient resource allocation across both technologies.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A sensing results sharing interface acts as an intermediary between the LTE and NR sidelink modules. This interface manages the communication of sensing results from the LTE module to the NR module, handling data formats, timing, and error checking. The intermediary layer simplifies the interaction between the two modules and enables efficient resource allocation without requiring direct complex integration.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If the NR sidelink module requests LTE sensing results explicitly, then information accuracy is improved, but time delay increases

Engineering Contradiction:

Improveinformation accuracyVSAvoidtime delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The LTE sidelink module performs sensing operations in advance and stores the sensing results locally before the NR module needs them. The NR module can then access these pre-computed results without triggering a new sensing cycle, reducing time delay while maintaining accuracy. The preliminary sensing action is performed during LTE operational periods, making the results available when needed for NR resource selection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the NR sidelink module sends requests for sensing results to the LTE module, and the LTE module responds with the requested information. This feedback loop ensures that the NR module receives accurate, up-to-date sensing results while managing the timing through configurable response parameters and caching mechanisms that balance accuracy requirements with time sensitivity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20260046908A1Procedures of sensing results sharing from LTE sidelink to NR sidelink

Publication Date: 2026.02.12 APPLE INC

AI summary

Methods, systems, devices, and computer programs for NR sidelink resource (re)selection using LTE sidelink information are disclosed. In one aspect, the method can include actions of determining, by an NR sidelink module of a UE, a set of NR sidelink resources that overlap with indicated LTE sidelink resources, and excluding, by the NR sidelink module of the UE, the determined set of resources from a candidate resource set (SA) at a predetermined time.