PosSIB Update Timing for 5G Positioning Accuracy

Solution Overview

Problem

In wireless communication systems, particularly with the introduction of 5G, determining the optimal frequency for updating Positioning System Information Blocks (PosSIBs) is challenging due to the large number of defined PosSIBs and the lack of deterministic update schedules, leading to potential power consumption issues and system bottlenecks.

Innovation Solution

A method for operating user equipment (UE) that involves receiving a PosSIB of a first type, determining the time for updating the associated information based on UE-determined periodicity, post-decoding time offset, or a scheduled update for the PosSIB group, and updating the information accordingly. Additionally, incorporating a value tag and expiration timer in System Information Block 1 (SIB1) for each PosSIB to trigger updates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If PosSIB update frequency is increased to ensure up-to-date positioning information, then positioning accuracy is improved, but power consumption increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic PosSIB updates with configurable periodicity parameters. The UE determines update timing based on PosSIB-update periodicity and post-PosSIB decoding time offset, transitioning from continuous monitoring to periodic sampling. This reduces power consumption while maintaining positioning accuracy through strategically timed updates rather than constant monitoring.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent introduces dynamic update scheduling where the network can configure different update periodicities for different PosSIB types or groups. The expiration timer and value tag mechanisms allow dynamic adjustment of update frequency based on network conditions and UE needs, optimizing the balance between accuracy and power consumption in real-time.

Inventive Principle:

Principle #15Dynamics

2Loss of information

If PosSIB update frequency is increased to maintain current information, then information freshness is improved, but system load increases

Engineering Contradiction:

Improveinformation freshnessVSAvoidsystem load

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The patent implements periodic PosSIB updates with configurable periodicity parameters. The UE determines update timing based on PosSIB-update periodicity and post-PosSIB decoding time offset, transitioning from continuous monitoring to periodic sampling. This reduces power consumption while maintaining positioning accuracy through strategically timed updates rather than constant monitoring.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The network performs preliminary configuration by providing PosSIB update schedules and expiration timers in advance. The UE uses these pre-provided parameters to determine optimal update timing without requiring continuous network instructions, reducing system load while maintaining information freshness through autonomous yet coordinated updates.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If continuous PosSIB monitoring is implemented to ensure up-to-date information, then positioning reliability is improved, but UE power consumption increases

Engineering Contradiction:

Improvepositioning reliabilityVSAvoidUE power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic PosSIB updates with configurable periodicity parameters. The UE determines update timing based on PosSIB-update periodicity and post-PosSIB decoding time offset, transitioning from continuous monitoring to periodic sampling. This reduces power consumption while maintaining positioning accuracy through strategically timed updates rather than constant monitoring.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent employs feedback mechanisms through expiration timers and value tags that inform the UE when PosSIB updates are necessary. The network provides feedback via SIB1 value tags and expiration timers, enabling the UE to adjust its monitoring behavior accordingly, maintaining reliability only when needed while reducing power consumption during stable periods.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250031172A1Timing for updates of information associated with a positioning system information block

Publication Date: 2025.01.23 QUALCOMM INC

AI summary

Disclosed are techniques for wireless communication. In an aspect, information associated with a Positioning System Information Block (PosSIB) is updated based on a UE-determined PosSIB-update periodicity, a UE-determined post-PosSIB decoding time offset, a PosSIB update schedule for a PosSIB group to which the PosSIB of the first type belongs, or any combination thereof. In another aspect, a system information block 1 (SIB1) for each PosSIB in a set of PosSIBs is received by UE. Each PosSIB in the set of PosSIBs is associated with a different PosSIB type, and each SIB1 comprises a value tag and an expiration timer for a respective PosSIB in the set of PosSIBs. Each PosSIB in the set of PosSIBs in accordance with the value tag and the expiration timer of the respective SIB1.