PCI Range Assistance for Low-Power Cell Measurement

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Solution Overview

Problem

In communication systems, particularly in public network integrated NPN deployment, terminals consume excessive electrical energy during cell measurements due to measuring all cells found, which is inefficient and not aligned with the need for low latency and high reliability in industrial environments.

Innovation Solution

The implementation of PCI range information, including a PCI range and network information, allows terminals to determine specific networks for measurement, reducing unnecessary cell scans and conserving power by only measuring cells that provide CAG access, using network indices or identifiers to ensure accurate network identification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If terminals measure all cells found in public network integrated NPN deployment, then comprehensive network coverage is ensured, but electrical energy consumption increases significantly

Engineering Contradiction:

Improvenetwork coverageVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent segments the cell measurement process by introducing PCI range information that divides cells into different measurement groups. Terminals only need to measure cells within their assigned PCI range, rather than all cells, thus reducing power consumption while maintaining necessary network coverage through targeted measurement segments

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network side performs preliminary action by pre-calculating and providing PCI range information to terminals before the actual measurement process. This allows terminals to know in advance which PCI ranges to measure, avoiding unnecessary full-spectrum measurements and reducing energy consumption while ensuring coverage of relevant networks

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If terminals perform comprehensive cell measurements to ensure reliable network access, then measurement accuracy is maintained, but measurement time increases leading to higher latency

Engineering Contradiction:

Improvecell measurement accuracyVSAvoidmeasurement time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the measurement space using PCI range information, allowing terminals to focus measurements on specific PCI ranges rather than scanning all possible cells. This segmentation maintains measurement precision for relevant networks while significantly reducing the time required by eliminating measurements of unrelated cells

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies partial action by having terminals perform measurements only on PCI ranges that are relevant to their specific network access needs, rather than performing excessive comprehensive measurements on all cells. This partial measurement approach maintains sufficient accuracy for CAG network access while reducing overall measurement time and latency

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12538221B2Assistance information processing method, assistance information sending method, and related device

Publication Date: 2026.01.27 VIVO MOBILE COMM CO LTD

AI summary

This application discloses an assistance information processing method, an assistance information sending method, and a related device, and pertains to the field of communication technologies. The method includes: receiving physical cell identifier PCI range information, where the PCI range information includes a PCI range and network information corresponding to the PCI range; and determining, based on the network information, a network corresponding to the PCI range; where the network information includes a network index or a network identifier.