Data Resume Indicator for Wireless Client Power Management

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Solution Overview

Problem

Client terminals in wireless communication systems face significant power consumption issues in connected modes, leading to faster battery depletion, and switching to idle modes results in noticeable delays and lag, necessitating a solution to conserve power without compromising user experience.

Innovation Solution

Implementing a lowered power mode that discontinuously monitors channels and relies on a network-provided data resume indicator (DRI) to conserve power during inactive periods in communication sessions, allowing the client terminal to switch back to connected mode only when data is needed, thereby reducing overall power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the client terminal operates in connected mode to maintain fast data reception, then communication speed is improved, but power consumption increases

Engineering Contradiction:

Improvedata reception speedVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The system dynamically switches between connected mode and lowered power mode based on data activity. The client terminal transitions from continuous monitoring in connected mode to discontinuous monitoring in lowered power mode when no data is being transmitted, optimizing the balance between speed and power consumption in real-time

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The network sends data resume indicators periodically to the client terminal in lowered power mode. The client terminal wakes up at predetermined intervals to check for these indicators, allowing periodic data reception while maintaining reduced power consumption between intervals

Inventive Principle:

Principle #19Periodic action

2Use of energy by moving object

If the client terminal switches to idle mode to conserve power, then power consumption is reduced, but communication delay increases

Engineering Contradiction:

Improvepower consumptionVSAvoidcommunication delay

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The network sends a data resume indicator to the client terminal before actual data transmission begins. This preliminary notification allows the client terminal to wake up from lowered power mode in advance and prepare its communication interfaces, eliminating the delay associated with cold startup from idle mode

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The data resume indicator acts as an intermediary signal between the network and the client terminal. It serves as a wake-up call that triggers the client terminal to transition from lowered power mode to connected mode, coordinating the resumption of data transmission without requiring the terminal to remain continuously active

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP2641430B1Data resume indicator for mobile device power conservation

Publication Date: 2018.10.24 QUALCOMM INC

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AI summary

A novel power conservation scheme is provided for conserving power in a wireless client terminal with an established communication session. While in a connected mode, the client terminal may receive data for the communication session via a data channel from an access point. During periods of inactivity over the data channel, the client terminal may switch to a lowered power mode, where the client terminal discontinuously monitors a control channel and does not monitor the data channel. The access point is informed of the operating mode of the client terminal. If a data resume indicator is received over the control channel, the client terminal switches back to the connected mode and resumes the communication session by receiving additional data over the data channel.