Communication Device Synchronization Judgment Overlapping Frequency Bands

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Solution Overview

Problem

Existing communication devices struggle to simultaneously receive frames from different communication schemes without a common synchronization signal, limiting their ability to coexist in wireless networks.

Innovation Solution

A communication device that receives signals from multiple communication schemes using a receiver configured to operate within overlapping frequency bands, featuring a synchronization judgment unit to establish synchronization and a scheme judgment unit to perform reception processing based on the establishable communication scheme.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a common synchronization signal is used for multiple communication schemes, then the control device can simultaneously receive frames from different communication schemes, but the header data size increases and transmission efficiency decreases

Engineering Contradiction:

Improveability to receive frames from different communication schemesVSAvoidheader data size

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent segments the synchronization function by creating separate synchronization signals for each communication scheme (first synchronization signal for first scheme, second synchronization signal for second scheme) rather than using a single common synchronization signal. This allows the receiver to selectively process only the synchronization signal corresponding to the current communication scheme, avoiding the need to handle unnecessary header data and maintaining transmission efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by making each synchronization signal scheme-specific rather than universal. The receiver is configured to use the first synchronization signal specifically for frames of the first communication scheme and the second synchronization signal specifically for frames of the second communication scheme. This localized approach ensures that each synchronization signal is optimized for its specific communication scheme without adding unnecessary overhead for other schemes.

Inventive Principle:

Principle #3Local quality

2Productivity

If separate synchronization signals are used for different communication schemes, then header data size is reduced and transmission efficiency improves, but the device complexity increases

Engineering Contradiction:

Improvetransmission efficiencyVSAvoidcomplexity of synchronization judgment and scheme identification

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring the receiver with multiple synchronization signals corresponding to different communication schemes before actual frame reception begins. The receiver is already equipped with the first synchronization signal for the first communication scheme and the second synchronization signal for the second communication scheme, along with the corresponding judgment logic. This preliminary preparation eliminates the need for complex runtime analysis and scheme identification, as the receiver can directly compare incoming frames against the pre-configured synchronization signals to determine the communication scheme and proceed with reception.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If the control device constantly monitors for unknown communication schemes, then it can support more communication schemes, but energy consumption increases

Engineering Contradiction:

Improvenumber of supported communication schemesVSAvoidenergy consumption of constant monitoring

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent applies periodic action by having the receiver alternately monitor for frames of different communication schemes based on pre-configured timing and synchronization patterns. Instead of continuously monitoring all possible communication schemes simultaneously, the receiver periodically switches between monitoring for the first communication scheme using the first synchronization signal and monitoring for the second communication scheme using the second synchronization signal. This periodic monitoring approach reduces energy consumption compared to constant simultaneous monitoring of all schemes, while still maintaining the ability to support multiple communication schemes.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS9532324B2Communication device and method of determining communication method

Publication Date: 2016.12.27 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A communication device and a communication scheme judgment method that enable reception of frames of different communication schemes without setting a common synchronization signal in the frames for each communication scheme. A signal including synchronization information corresponding to a communication scheme is receivable via a frequency band within which a frequency band of a channel corresponding to a first communication scheme overlaps with at least a portion of a frequency band of a channel corresponding to a second communication scheme. Using the synchronization information, when synchronization of one communication scheme out of the first communication scheme and the second communication scheme is establishable, processing of the signal is performed using the one communication scheme, and when the synchronization of the one communication scheme is not establishable and synchronization of the other communication scheme is establishable, processing of the signal is performed using the other communication scheme.