Adaptive Power Control Mechanism for Wireless Communication Latency

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Solution Overview

Problem

In wireless network infrastructure, devices with low throughput applications like gaming struggle to enter a doze state due to constant packet reception, leading to increased power consumption and data latency issues, as existing TWT mechanisms may not adequately manage packet transmission and buffering.

Innovation Solution

An adaptive power control mechanism that involves exchanging wake and doze information between devices to optimize TWT periods and intervals, allowing devices to efficiently manage power consumption and reduce data latency by synchronizing data transmission with wake intervals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the station uses TWT mechanism to enter doze state for power saving, then power consumption is reduced, but data latency increases due to long doze periods and packet buffering

Engineering Contradiction:

Improvepower consumptionVSAvoiddata latency

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements dynamic adjustment of wake intervals based on real-time downlink data conditions. When downlink data is available, the wake interval is shortened to ensure timely packet reception; when no downlink data is expected, the wake interval is extended to maximize power saving. This dynamic adaptation resolves the contradiction between power consumption and data latency by making the doze state duration flexible rather than fixed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The station receives downlink data information from the access point and uses this feedback to adjust its wake and doze intervals. The feedback mechanism allows the station to know whether downlink data is available before entering doze state, enabling it to optimize its wake schedule accordingly. This feedback loop ensures that the station wakes up only when necessary, reducing both power consumption and latency.

Inventive Principle:

Principle #23Feedback

2Use of energy by moving object

If the wake time set by TWT mechanism is insufficient, then power saving is improved, but packet transmission completeness deteriorates as access point cannot transmit all packets

Engineering Contradiction:

Improvepower consumptionVSAvoidpacket transmission completeness

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The access point provides downlink data information to the station in advance before the station enters doze state. This preliminary information allows the station to determine its wake and doze intervals based on the actual downlink data conditions. By knowing in advance whether downlink data is available, the station can set appropriate wake times to ensure complete packet reception while still achieving power saving benefits.

Inventive Principle:

Principle #10Preliminary action

3Use of energy by moving object

If the doze time of station is extended for power saving, then power consumption is reduced, but data latency worsens due to longer buffering periods at access point

Engineering Contradiction:

Improvepower consumptionVSAvoiddata latency

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The station changes the parameter of wake interval duration based on downlink data conditions. By adjusting this parameter dynamically - shorter intervals when data is available, longer intervals when data is not available - the system optimizes both power consumption and data latency performance across different operational scenarios.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11659486B2Wireless communication method with adaptive power control mechanism and associated circuitry within electronic device

Publication Date: 2023.05.23 MEDIATEK INC

AI summary

The present invention provides a wireless communication method of an electronic device, wherein the wireless communication method includes the steps of: building a link with peer electronic device; receiving downlink data information from the peer electronic device; referring to the downlink data information to determine wake and doze information of the electronic device; and transmitting the wake and doze information of the electronic device to the peer electronic device.