Adaptive RF Power Mode Control Using MCS Values
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Solution Overview
Problem
Wireless communication devices face challenges in power conservation, as they often operate in high power modes to receive data, leading to increased power consumption and reduced battery life, especially when lower power modes could be sufficient based on the modulation and coding scheme (MCS) values.
Innovation Solution
Adaptive power control methods are implemented in wireless communication devices to switch between power modes based on the MCS values of incoming and outgoing data, using techniques such as switching synthesizers, voltage sources, and bias currents to optimize power usage, allowing devices to operate in lower power modes when appropriate and higher power modes as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device operates in a high power mode to receive data, then the reliability of data reception is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic power mode switching based on MCS values. The device transitions between high power mode and low power mode according to the modulation and coding scheme requirements, making the power consumption adaptive rather than static. This resolves the contradiction by allowing the system to use high power only when necessary for reliable reception of high-order modulations while using low power for more robust, lower-order modulations.
Solution Approach 2:
The patent changes the power mode parameter based on the MCS value parameter. By monitoring the MCS indicator in received frames and adjusting the power mode accordingly, the system optimizes the balance between reception reliability and power consumption. Different MCS ranges trigger different power modes, creating a parameter-based control strategy that resolves the technical contradiction.
2Duration of action of moving object
If the device operates in a low power mode to reduce power consumption, then the battery life is extended, but the data reception reliability deteriorates
Solution Approach 1:
The system dynamically adjusts power mode based on real-time MCS conditions rather than operating statically in low power mode. When MCS values indicate robust modulation schemes are being used, the device operates in low power mode to extend battery life. When MCS values indicate higher-order modulations are required, the device switches to high power mode to maintain reception reliability, thus dynamically balancing battery life extension with reliability maintenance.
Solution Approach 2:
The patent uses MCS values as a threshold parameter to control power mode transitions. By establishing MCS thresholds that correspond to different power mode requirements, the system ensures that low power mode is only used when the modulation scheme can be reliably received at lower power levels, preventing reliability deterioration while extending battery life.
3Loss of energy
If the device switches power modes frequently to optimize power consumption, then the energy efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the device monitors MCS values in received frames and uses this information to control power mode transitions. This closed-loop control optimizes energy efficiency by switching to low power mode when appropriate while maintaining simplicity through rule-based decision logic. The feedback from MCS indicators provides the necessary information to make intelligent power mode decisions without requiring complex algorithms.
Solution Approach 2:
The device performs self-service by autonomously determining when to switch power modes based on the MCS values it receives. The system uses its own received signal information (MCS indicators) to control its power state without requiring external control signals or complex coordination, thereby improving energy efficiency while keeping the control mechanism relatively simple and self-contained.
Data Source
AI summary
Methods, systems, and devices are described for power conservation in a wireless communications system. In embodiments, power conservation may be achieved by adaptively controlling power modes of a wireless communication device, using a modulation and coding scheme (MCS) value as a factor for guidance. According to one aspect, the device may be in a reception mode. While in a first power mode, the device may receive control information for incoming data that is being transmitted via a transmission frame. The control information may be located in a first portion of the frame with the data following in a second portion of the frame. The control information may include or otherwise indicate an MCS value corresponding to the MCS applied to the incoming data. Based on the MCS value, the device may be adaptively switched to a second power mode for receiving the incoming data.