LP-WUR Signal Sequencing for Low-Power Terminal Synchronization

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Solution Overview

Problem

Existing technologies face challenges in implementing time synchronization and measurement in low power consumption scenarios for low power terminals, particularly in reducing receiving activities and power consumption of radio frequency and baseband modules.

Innovation Solution

A synchronization and measurement method utilizing a first signal with distinct sequences for timing synchronization and measurement, including a first sequence for synchronization and a second sequence for measurement, with optional control information and a gap sequence for noise or interference measurement, enabling simultaneous synchronization and measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the terminal uses a low power wake-up receiver (LP-WUR) to reduce receiving activity and power consumption, then power consumption is reduced, but synchronization accuracy and measurement capability deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoidsynchronization accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The patent segments the signal into two distinct sequences: a first sequence optimized for timing synchronization and a second sequence optimized for measurement. This segmentation allows each sequence to be independently optimized for its specific function, enabling the LP-WUR to achieve both low power consumption and adequate synchronization/measurement performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first signal structure is designed to serve multiple functions simultaneously - it contains both the first sequence for timing synchronization and the second sequence for measurement. This multi-functionality allows the LP-WUR to perform both synchronization and measurement operations using a single low-power receiver, avoiding the need for a full-featured high-power receiver.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If the terminal performs both timing synchronization and measurement using separate procedures, then synchronization accuracy is improved, but device complexity and power consumption increase

Engineering Contradiction:

Improvesynchronization accuracyVSAvoidreceiving module complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges the timing synchronization function and measurement function into a single first signal structure. The first signal contains both the first sequence (for timing synchronization) and the second sequence (for measurement), allowing the LP-WUR to perform both functions simultaneously without requiring separate high-power receiving paths, thus reducing overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The first signal is designed as a multi-functional signal that serves both timing synchronization and measurement purposes. This universal signal structure eliminates the need for separate synchronization signals and measurement signals, simplifying the receiving module architecture while maintaining both functional capabilities in the low-power receiver.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If the terminal activates the main communication module for every wake-up signal detection, then measurement accuracy is improved, but power consumption increases significantly

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent extracts the measurement function from the main communication module and implements it within the low power wake-up receiver. By including the second sequence specifically designed for measurement in the first signal, the LP-WUR can perform measurement operations independently without activating the power-consuming main communication module, thus maintaining measurement accuracy while significantly reducing power consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The low power wake-up receiver is enhanced to perform measurement operations on its own using the second sequence embedded in the first signal. This self-service capability allows the LP-WUR to complete both synchronization and measurement tasks without requiring activation of the main communication module, eliminating unnecessary power consumption while maintaining measurement functionality.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20260046049A1Synchronization and measurement method for low-power terminal, terminal, and network-side device

Publication Date: 2026.02.12 VIVO MOBILE COMM CO LTD

AI summary

This application discloses a synchronization and measurement method for a low power terminal, a terminal, and a network side device, and pertains to the field of communication technologies. The synchronization and measurement method for the low power terminal in embodiments of this application includes: In a case that a terminal detects a first sequence of a first signal, the terminal performs timing synchronization based on the first sequence, where the first signal includes the first sequence and a second sequence; and the terminal measures the second sequence, to obtain a target measurement result.