Radio Communication Receiving Gain Adjustment for Power Savings

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Solution Overview

Problem

Radio communication apparatuses operating outside their communication radius consume excessive power due to repeated searches for synchronization, especially when interfered by other radio communication devices.

Innovation Solution

The apparatus adjusts its receiving gain to low when consecutive synchronization failures exceed a threshold, narrowing the receiving area and reducing power consumption by limiting the amplifier current, and employs a power control system to manage battery usage during standby and communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the radio communication apparatus continuously searches for synchronization with high receiving gain, then synchronization establishment is improved, but power consumption increases excessively when operating outside communication radius

Engineering Contradiction:

Improvesynchronization establishmentVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The receiving gain is made dynamically adjustable based on synchronization history. The control section changes the receiving gain between high and low states depending on whether synchronization has been successfully established in previous attempts, allowing the apparatus to adapt its power consumption levels to current operational conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements feedback by monitoring the number of consecutive synchronization failures and using this information to adjust the receiving gain. When consecutive failures exceed a threshold, the system reduces receiving gain to lower power consumption, and this feedback loop continues to operate based on subsequent synchronization attempts.

Inventive Principle:

Principle #23Feedback

2Area of stationary object

If the radio communication apparatus uses high receiving gain to detect weak signals, then communication range is extended, but interference from other devices increases and power consumption rises

Engineering Contradiction:

Improvecommunication rangeVSAvoidinterference from other devices

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The receiving gain is dynamically adjusted based on real-time synchronization status and historical failure counts. The system transitions between high gain (for extended range) and low gain (to reduce interference and power consumption) states depending on current operational conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the receiving gain parameter based on the number of consecutive synchronization failures. When failures exceed a predetermined threshold, the receiving gain is reduced from high to low state, thereby changing the operational parameters to reduce interference and power consumption while maintaining adequate communication capability.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the radio communication apparatus repeatedly attempts synchronization when outside communication radius, then synchronization establishment is improved, but power consumption increases due to continuous searching

Engineering Contradiction:

Improvesynchronization establishmentVSAvoidtime spent on repeated searches

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The receiving gain is dynamically changed based on the number of consecutive synchronization failures. When failures exceed a threshold indicating the apparatus is likely outside communication radius, the system reduces receiving gain and suspends repeated search attempts, thereby reducing time loss and power consumption.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses feedback from synchronization attempt results to adjust its behavior. By monitoring consecutive failures and using this feedback to change receiving gain and search behavior, the system avoids futile repeated attempts when outside communication radius, reducing time loss and power consumption.

Inventive Principle:

Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach significantly reduces power consumption when operating outside the communication radius and minimizes interference from other devices, ensuring efficient power management and synchronization establishment.

Implementation Method 1

a radio section that performs radio communication with the control station with a receiving gain corresponding to a setting and receives the control signal from the control station

Methodology Applied

Scientific EffectTime-division multiplex communication:

Data Source

PatentEP3641288B1Radio communication system

Publication Date: 2021.05.26 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

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AI summary

The present invention reduces power consumption in a battery-driven radio communication apparatus, particularly, power consumption when the radio communication apparatus operates outside the communication radius. In an operation in the communication area of door-intercom master unit 100, monitor terminal 200 acting as the battery-driven radio communication apparatus performs a search at a high gain during communication for presence confirmation. In an operation outside the communication area of door-intercom master unit 100, the radio communication apparatus performs a search at a low gain during communication for presence confirmation and then operates so as to narrow a receiving area.