Positioning Signal Configuration Across Cell Reselection

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Solution Overview

Problem

In existing communication systems, uplink positioning is interrupted when cell reselection occurs or validity criteria fail, leading to additional power consumption and signaling overhead due to the need for reconfiguration of positioning signals like SRS-Pos.

Innovation Solution

A method where a terminal device receives configuration information for a first signal applicable across a region comprising multiple cells, allowing continued signal transmission even after cell reselection without re-establishing network connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal device reconfigures the positioning signal after cell reselection, then positioning continuity is maintained, but signaling overhead and power consumption increase

Engineering Contradiction:

Improvepositioning continuityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The network device pre-configures multiple valid cell IDs for the terminal device before cell reselection occurs. When cell reselection happens, the terminal device can immediately use one of the pre-configured cell IDs to continue transmitting positioning signals without needing to reconfigure, thus maintaining positioning continuity while avoiding additional signaling and power consumption

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the terminal device reconnects to the network after cell reselection, then positioning configuration is restored, but signaling overhead increases

Engineering Contradiction:

Improvepositioning configurationVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The network device provides the terminal device with a list of valid cell IDs in advance through RRC configuration. When cell reselection occurs within these valid cells, the terminal device can maintain its positioning configuration without reconnecting to the network, thereby avoiding additional signaling overhead while ensuring positioning configuration remains valid

Inventive Principle:

Principle #10Preliminary action

3Productivity

If the positioning signal configuration is released after validity criterion fails, then resource allocation is optimized, but positioning interruption occurs

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidpositioning continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The network device pre-configures multiple valid cell IDs and corresponding positioning signal parameters before the terminal device undergoes cell reselection. When cell reselection occurs within the valid cells, the terminal device can immediately continue transmitting positioning signals using the pre-configured parameters without interruption, while the network device can optimize resource allocation by knowing the valid cell range in advance

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12581324B2Communication methods, terminal device, access network device, and core network device

Publication Date: 2026.03.17 QUECTEL WIRELESS SOLUTIONS CO LTD

AI summary

A communication method, a terminal device, an access network device, and a core network device are provided. One example method includes: receiving, by a terminal device, first configuration information. The first configuration information is related to a first region and a first signal, the first signal is configured for positioning, and the first region includes a plurality of cells.