Synchronization Apparatus Reducing Processing Volume via Pattern Segmentation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In wireless communication systems, the existing synchronization technologies face increased processing volume and power consumption due to the need for precise correlation calculations across multiple synchronization patterns, which complicates the detection of synchronization timing and increases standby power consumption.

Innovation Solution

A synchronization apparatus and method that divides synchronization signals into multiple patterns, calculates correlation using these patterns, and adjusts the number of divisions based on the number of synchronization signals, allowing for reduced processing volume by integrating correlation values and selectively changing reference signals when correlation values exceed a threshold.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If one symbol is sampled at a plurality of sampling points to increase detection precision, then the precision of synchronization timing detection is improved, but the processing volume for correlation process increases

Engineering Contradiction:

Improveprecision of synchronization timing detectionVSAvoidprocessing volume

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The synchronization signal is divided into multiple patterns, and the correlation process is segmented to process each pattern separately. This allows the system to maintain detection precision by examining multiple sampling points while reducing overall processing volume through structured segmentation of the correlation calculations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs correlation processing for each pattern at selected sampling points rather than exhaustively processing all possible combinations. By strategically selecting which patterns and sampling points to process, the system achieves sufficient detection precision without the excessive processing burden of complete enumeration.

Inventive Principle:

Principle #16Partial or excessive action

2Adaptability or versatility

If a plurality of types of synchronization words are defined, then the adaptability of the synchronization system is improved, but the correction process for respective synchronization words increases processing volume

Engineering Contradiction:

Improvenumber of synchronization patternsVSAvoidprocessing volume

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

Multiple synchronization patterns are segmented and processed independently through the correlation process. Each pattern is handled as a separate entity, allowing the system to support multiple synchronization types without requiring exhaustive correction processes for all patterns simultaneously, thus managing processing volume effectively.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The correlation processor is designed with universal functionality to handle multiple synchronization patterns through a unified processing framework. This multi-functional approach allows the same processing mechanism to adapt to different pattern types without requiring separate dedicated correction processes for each pattern, reducing overall processing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If correlation values are calculated for each pattern and each sample, then the precision of synchronization detection is improved, but the power consumption increases

Engineering Contradiction:

Improvesynchronization detection precisionVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The correlation calculation process is segmented across multiple patterns and sampling points, allowing the system to distribute computational load efficiently. This segmentation enables precise synchronization detection through comprehensive correlation analysis while managing power consumption by structuring calculations in an organized, resource-efficient manner.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system calculates correlation values strategically at selected patterns and sampling points rather than performing exhaustive calculations at every possible position. This partial action approach maintains sufficient detection precision by focusing computations on the most informative samples while reducing overall power consumption compared to complete enumeration.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS10484227B2Synchronization apparatus, synchronization method for synchronizing timing

Publication Date: 2019.11.19 JVC KENWOOD CORP

AI summary

A correlation processor derives a correlation value indicating correlation between each of a plurality of reference signals produced by extracting symbols from the synchronization signal of each pattern at a predetermined interval and a received signal. A controller compares the correlation value for each pattern and for each sample derived by the correlation processor with a threshold value and, when at least one correlation value is larger than the threshold value, changes symbols extracted to produce respective reference signals before causing the correlation processor to perform the same process, incorporating the received signal newly acquired. A first selector selects one of the plurality of patterns when all symbols of the synchronization signal have been extracted to produce the reference signals and at least one correlation value is larger than the threshold value.