Dynamic Power Management for Communication Devices Based on Packet Length

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Solution Overview

Problem

Mobile communication devices face challenges in reducing power consumption without compromising performance, as they require efficient power management to extend battery life while maintaining thin and lightweight designs.

Innovation Solution

Implementing a power management method that dynamically adjusts the power state of communication device components based on packet length, allowing for reduced power consumption during packet processing and restoring power at the end of each packet, with multiple power-saving levels depending on packet duration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power is continuously supplied to all components, then device performance is maintained, but power consumption increases

Engineering Contradiction:

Improvedevice performanceVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power management by adjusting the power state of communication components based on real-time packet reception status. Components transition between active and low-power states dynamically, matching power supply to actual operational needs rather than maintaining continuous power supply.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the power state parameter of communication components based on packet length thresholds. When packets exceed certain length thresholds, components are kept in active state; otherwise, they transition to low-power state, thereby optimizing power consumption while maintaining performance when needed.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If packet processing is optimized for speed, then communication efficiency improves, but power consumption increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by selectively activating power management for specific communication components based on packet characteristics. Not all components are powered down simultaneously - only those not currently processing packets are reduced to low-power state, maintaining communication efficiency while reducing overall power consumption.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The system implements periodic power state transitions synchronized with packet reception cycles. Components alternate between active and low-power states in rhythm with packet arrivals, ensuring communication efficiency during packet processing while achieving power savings during idle periods between packets.

Inventive Principle:

Principle #19Periodic action

3Use of energy by moving object

If components are powered down to save energy, then power consumption decreases, but device responsiveness worsens

Engineering Contradiction:

Improvepower consumptionVSAvoiddevice responsiveness

Core Design Contradiction:

Use of energy by moving objectVSSpeed

Solution Approach 1:

The patent employs preliminary action by pre-assessing packet length before initiating power management decisions. The system determines whether incoming packets exceed length thresholds that would require components to remain active, making power state decisions in advance to avoid delays in component activation and maintain responsiveness.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9832730B2Power management of communication devices

Publication Date: 2017.11.28 QUALCOMM INC

AI summary

A communication device receives at least a portion of a packet. Power is reduced to a subset of components of a communication device. The subset of components for which power is reduced is determined based, at least in part, on a length of the packet. The power is reduced for a time period based, at least in part, on the length of the packet.