Wireless Communication Unit Power Reduction via Selective NACK Transmission

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Solution Overview

Problem

Wireless communication in portable devices leads to increased power consumption, necessitating a reduction in the power required for wireless communication.

Innovation Solution

An information processing device and method that transmits an acknowledgement normally received data and a negative acknowledgement for unreceived data, with the communication unit setting transmission power for negative acknowledgements to lower than normal power when no data body is transmitted, specifically in wireless communication systems like Bluetooth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If transmission power for negative acknowledgements is reduced to low power, then power consumption is reduced, but transmission reliability may deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoidtransmission reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies local quality by differentiating transmission power settings based on the type of data being transmitted. Negative acknowledgements without data bodies are transmitted at low power, while acknowledgements with data bodies are transmitted at normal power. This localized adjustment of transmission power quality resolves the contradiction by reducing power consumption for simple NACK transmissions while preserving transmission reliability for more critical data-containing transmissions.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the transmission power parameter dynamically based on the content of the acknowledgement message. By switching between low power and normal power modes depending on whether a data body is present, the system optimizes power consumption without compromising the reliability of critical transmissions. This parameter change strategy directly addresses the contradiction between power efficiency and transmission reliability.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If transmission power for negative acknowledgements is set to normal power, then transmission reliability is maintained, but power consumption increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements local quality by applying normal transmission power only where necessary - specifically when data bodies are included in acknowledgements. For simple negative acknowledgements without data, low power is used. This selective application of normal power maintains transmission reliability for critical data transmissions while avoiding unnecessary power consumption for routine NACK transmissions.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies partial action by using normal transmission power only partially - specifically for acknowledgements containing data bodies - rather than consistently for all acknowledgements. This partial use of higher power maintains reliability where needed while reducing overall power consumption, resolving the contradiction between maintaining reliability and reducing power usage.

Inventive Principle:

Principle #16Partial or excessive action

3Use of energy by moving object

If low power is used for negative acknowledgements without data body, then power consumption is reduced, but data transmission efficiency may be affected

Engineering Contradiction:

Improvepower consumptionVSAvoiddata transmission efficiency

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The patent applies local quality by differentiating between two types of transmissions: negative acknowledgements without data bodies (transmitted at low power) and acknowledgements with data bodies (transmitted at normal power). This localized approach reduces power consumption for simple control messages while maintaining data transmission efficiency for actual data transfers, resolving the contradiction between power savings and transmission efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses partial action by applying low power only to the extent necessary - for NACK messages without data bodies. When data bodies are present, normal power is used to ensure efficient data transmission. This partial application of power reduction maintains overall data transmission efficiency while achieving power savings on non-critical transmissions.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20240007949A1Information processing device, information processing method, and program

Publication Date: 2024.01.04 SONY SEMICON SOLUTIONS CORP

AI summary

The present technology relates to an information processing device, an information processing method, and a program capable of reducing power required for wireless communication.An acknowledgement is transmitted to a connection device connected by wireless communication in a case where transmission data transmitted from the connection device has been received normally, and a negative acknowledgement is transmitted to the connection device in a case where the transmission data has not been received normally. In a case where the negative acknowledgement is transmitted to the connection device and there is no data body to be transmitted to the connection device, transmission power for transmitting the negative acknowledgement is set to low power lower than normal power that is transmission power for transmitting other data.