Dynamic Transmit Chain Configuration for Power Optimization

Solution Overview

Problem

Communication devices using multiple transmit chains in high-power modes often experience signal cancellation and elevated current drain, leading to reduced communication performance and battery life, especially in scenarios where additional transmit chains do not significantly enhance uplink communication quality or user experience.

Innovation Solution

A communication device with multiple transmit chains that configures itself to use fewer chains when satisfactory signal quality is maintained, deactivating chains temporarily to conserve power and reactivating them as needed based on signal quality indicators, thereby optimizing power consumption without compromising uplink performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If multiple transmit chains are used in high-power modes, then transmit power is increased, but signal cancellation occurs and current drain is elevated

Engineering Contradiction:

Improvetransmit powerVSAvoidsignal cancellation

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent implements dynamic transmit chain configuration where the device switches between single-chain and multi-chain modes based on real-time signal quality measurements. The controller monitors downlink signal quality and adjusts transmit chain activation accordingly, making the system adaptable to changing channel conditions rather than fixed in a single configuration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the device measures downlink signal quality and uses this information to control transmit chain operation. The controller receives feedback about signal conditions and adjusts transmit chain configuration accordingly, creating a closed-loop system that prevents signal cancellation by avoiding multi-chain modes when conditions are unfavorable.

Inventive Principle:

Principle #23Feedback

2Power

If multiple transmit chains are used in high-power modes, then transmit power is increased, but current drain is elevated

Engineering Contradiction:

Improvetransmit powerVSAvoidcurrent drain

Core Design Contradiction:

PowerVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic transmit chain configuration where the device switches between single-chain and multi-chain modes based on real-time signal quality measurements. The controller monitors downlink signal quality and adjusts transmit chain activation accordingly, making the system adaptable to changing channel conditions rather than fixed in a single configuration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters by switching between different transmit chain configurations (single-chain mode vs. multi-chain mode) based on signal quality conditions. This parameter change allows the system to optimize the balance between transmit power and power consumption, activating multiple chains only when necessary to achieve desired communication performance.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If multiple transmit chains are used, then uplink communication quality is improved, but battery life is reduced

Engineering Contradiction:

Improveuplink communication qualityVSAvoidbattery life

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent implements dynamic transmit chain configuration where the device switches between single-chain and multi-chain modes based on real-time signal quality measurements. The controller monitors downlink signal quality and adjusts transmit chain activation accordingly, making the system adaptable to changing channel conditions rather than fixed in a single configuration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters by switching between different transmit chain configurations (single-chain mode vs. multi-chain mode) based on signal quality conditions. This parameter change allows the system to optimize the balance between transmit power and power consumption, activating multiple chains only when necessary to achieve desired communication performance.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12132543B2Device-controlled transmit chain configuration for high power modes

Publication Date: 2024.10.29 MOTOROLA MOBILITY LLC

AI summary

A communication device, method, and computer program product reduce power consumption when one or more transmit chains can be inactivated without unsatisfactory uplink communication quality in single data layer transmit diversity (TxDiv) or multiple input multiple output (MIMO) mode. The communication device monitors uplink signal quality of the uplink data stream while connected in single layer mode to a base node using multiple transmit chains. The controller device deactivates transmit chain(s) while the uplink signal quality remains satisfactory. The controller re-activates the inactivated transmit chain(s) in response to the uplink signal quality becoming unsatisfactory.