Wi-Fi Terminal Power Control via Dynamic Mode Switching
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Solution Overview
Problem
Wi-Fi connectivity technology consumes high power due to its idle listening period, where terminals must constantly sense channels even without data transmission, leading to significant power consumption and reduced throughput, especially in dense network environments.
Innovation Solution
An apparatus and method that determine the operation mode of a terminal as either sleep or active based on information related to the next data frame, including destination address and duration information, to minimize power consumption during idle listening periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal operates in active mode during IL period to sense channels, then channel availability is ensured, but power consumption increases significantly
Solution Approach 1:
The terminal dynamically switches between active mode and sleep mode during IL periods based on whether data transmission is detected. When data is detected, the terminal transitions to active mode for channel sensing; when no data is detected, it enters sleep mode to conserve power. This dynamic adaptation resolves the contradiction between maintaining reliable channel sensing and reducing power consumption.
Solution Approach 2:
The terminal changes its operational parameters by adjusting the reception mode state between active and sleep modes based on data transmission conditions. This parameter change allows the system to optimize the balance between channel sensing reliability and power consumption by selecting appropriate operational states.
2Reliability
If the terminal constantly senses channels in IL period, then channel availability is maintained, but throughput decreases due to power consumption
Solution Approach 1:
The terminal dynamically adjusts its channel sensing behavior based on data transmission conditions. During IL periods with no data, the terminal enters sleep mode and reduces channel sensing activities, thereby conserving power and improving overall throughput. When data transmission occurs, the terminal transitions to active mode to ensure channel availability. This dynamic adjustment resolves the contradiction between maintaining channel availability and improving throughput.
3Use of energy by moving object
If the terminal enters sleep mode during IL period, then power consumption is reduced, but channel sensing capability is lost
Solution Approach 1:
The terminal employs periodic action by alternating between sleep mode and active mode during IL periods. It enters sleep mode to reduce power consumption but periodically wakes up to check for data transmissions and perform channel sensing when needed. This periodic switching between low-power and active states allows the terminal to maintain channel sensing capability while significantly reducing overall power consumption.
4Reliability
If the terminal operates in active mode, then data transmission is ensured, but latency increases due to continuous channel sensing
Solution Approach 1:
The terminal uses periodic action by switching between sleep mode and active mode based on data transmission needs. Instead of continuously operating in active mode with constant channel sensing, the terminal periodically activates channel sensing only when data transmission is detected or expected. This reduces unnecessary channel sensing operations, thereby reducing latency while maintaining data transmission reliability.
Data Source
AI summary
An apparatus, method, chipset, and non-transitory computer-readable storage medium for controlling power are provided. The apparatus includes a receiver configured to receive a data frame and first information related to a next data frame of the data frame; and a controller configured to determine an operation mode as an active mode or a sleep mode based on destination address information of the next data frame and duration information indicating a time during which transmission of the next data frame occurs, wherein the destination address information and the duration information are included in the first information.