RF Remote Control Using Minimal Wi-Fi Action Frames

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Solution Overview

Problem

Conventional RF remote control devices are complex, costly, and require significant computational resources due to the need for full Wi-Fi functionalities, leading to increased execution times for functions.

Innovation Solution

A specialized RF communications chip in the remote control device uses a minimal set of Wi-Fi protocols, such as BPSK digital modulation and Wi-Fi action frames, to reduce complexity and computational requirements, omitting unnecessary Wi-Fi protocols and memory, thereby reducing the device's complexity and cost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional RF remote control devices use full Wi-Fi functionalities (IEEE 802.11ac/ax protocols with multiple modulation techniques), then reliable communication with media systems is achieved, but device complexity, cost, and computational resource requirements increase substantially

Engineering Contradiction:
Improvecommunication reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts only the essential Wi-Fi communication components needed for remote control functionality. The RF remote control device implements a simplified Wi-Fi stack that supports only BPSK modulation and action frames, omitting other modulation techniques (QPSK, 16-QAM, 64-QAM, etc.) and protocol features. This extraction approach maintains communication reliability while dramatically reducing device complexity and cost.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies local quality by tailoring the Wi-Fi implementation specifically for remote control purposes rather than general-purpose Wi-Fi communication. The device uses only the specific protocols and modulation techniques (BPSK, action frames) that are locally optimized for simple command transmission, rather than implementing a complete Wi-Fi stack designed for diverse applications.

Inventive Principle:
Principle #3Local quality

2Adaptability or versatility

If conventional RF remote control devices support multiple Wi-Fi protocols and modulation techniques, then communication versatility is improved, but memory requirements and computational resources increase significantly

Engineering Contradiction:
Improvecommunication versatilityVSAvoidmemory requirements
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent extracts only the minimum necessary protocol elements for remote control operation. By removing support for multiple modulation techniques and protocol variants, the device reduces memory requirements from what would be needed for a full Wi-Fi stack to just enough for BPSK and action frames, achieving substantial memory savings while maintaining sufficient versatility for control functions.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If conventional RF remote control devices implement complete Wi-Fi stacks with multiple modulation techniques, then protocol compatibility is improved, but execution time for functions increases

Engineering Contradiction:
Improveprotocol compatibilityVSAvoidexecution time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent extracts and implements only the fastest and most efficient communication elements needed for remote control. By using BPSK modulation (which has simpler processing requirements) and action frames (which are optimized for simple command transmission), the device reduces processing overhead and execution time compared to implementing and switching between multiple modulation techniques and protocol modes.

Inventive Principle:
Principle #2Taking out (Extraction)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution results in a less complex, less costly, and faster RF remote control device that requires substantially less computational resources and reduces execution time for functions.

Implementation Method 1

utilize Wi-Fi action frames (or, optionally, just a single type of Wi-Fi action frame such as a vendor-specific action frame) and BPSK digital modulation

Methodology Applied
Scientific EffectBPSK digital modulation: Phase Modulation

Data Source

PatentUS12363800B2Radio frequency remote control
Publication Date: 2025.07.15 ROKU INC
  • US12363800B2 patent drawing
  • US12363800B2 patent drawing
  • US12363800B2 patent drawing

AI summary

Disclosed herein are system, apparatus, article of manufacture, method, and computer program product embodiments for remotely controlling a media device. An embodiment includes an apparatus including a radio frequency (RF) communications chip, a memory, and at least one processor coupled to the RF communications chip and the memory. The at least one processor is configured to receive an electronic signal indicative of a user command and generate, based on the electronic signal, an action frame packet configured to instruct a media device to perform a function associated with the user command. Subsequently, the at least one processor is configured to transmit, using the RF communications chip, the action frame packet to the media device.