Dynamic Transmit Chain Signaling for Adaptive WLAN Throughput

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Solution Overview

Problem

Existing WLAN devices face challenges in efficiently managing transmit chains to support diverse environments and applications, such as video streaming and cellular offloading, while optimizing power consumption and performance in high-density scenarios.

Innovation Solution

Wireless devices dynamically adapt the number of active transmit chains and channel widths, communicating this information to other devices, enabling efficient Space-Time Block Coding (STBC) transmissions and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a wireless device uses a fixed number of transmit chains, then the device structure is simple and easy to manufacture, but the device cannot adapt to diverse environments and applications, resulting in reduced system throughput and user experience

Engineering Contradiction:

Improveadaptability to diverse environments and applicationsVSAvoidtransmit chain management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic adaptability by allowing the wireless device to change the number of active transmit chains based on environmental conditions and application requirements. The device can dynamically select between 1, 2, or 4 transmit chains and communicate this capability to other devices through frame signaling, enabling adaptive optimization of system throughput and user experience without requiring a fixed complex multi-chain structure.

Inventive Principle:

Principle #15Dynamics

2Productivity

If a wireless device dynamically adapts the number of active transmit chains, then the device can optimize performance and power consumption for diverse applications, but the device complexity increases due to dynamic configuration and signaling requirements

Engineering Contradiction:

Improvesystem throughputVSAvoiddynamic configuration complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent changes the operational parameters of the transmit chains dynamically. The device can select from different numbers of active transmit chains (1, 2, or 4) and indicate this configuration to other devices through frame parameters. This parameter-based approach allows the device to optimize system throughput for different applications (video streaming, cellular offloading, high-density scenarios) while managing complexity through standardized parameter signaling rather than complex structural changes.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If a wireless device uses multiple transmit chains simultaneously, then the system throughput and user experience are enhanced, but the power consumption increases

Engineering Contradiction:

Improvesystem throughputVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power optimization by allowing the wireless device to activate only the necessary number of transmit chains based on current application requirements and environmental conditions. The device can dynamically switch between 1, 2, or 4 active transmit chains and signal this configuration to other devices, enabling system throughput enhancement when needed while reducing power consumption during normal operation by keeping fewer chains active.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If a wireless device supports diverse applications like video streaming and cellular offloading, then the adaptability and user experience are improved, but the device complexity and power consumption increase

Engineering Contradiction:

Improvesupport for diverse applicationsVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent enables dynamic adaptation to diverse applications by allowing the wireless device to change its transmit chain configuration based on the specific application requirements. For video streaming and cellular offloading applications, the device can activate additional transmit chains (2 or 4) to enhance performance, while for normal operations it uses fewer chains (1) to conserve power. The device communicates its current capability configuration to other devices through frame signaling, enabling application-specific optimization without permanently increasing power consumption.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12432605B2Dynamic transmit chain availability signaling in wireless devices

Publication Date: 2025.09.30 ATLAS GLOBAL TECHNOLOGIES LLC

AI summary

A wireless devices communicates a transmission capability by determining a number of active transmits chains of the wireless device, determining a maximum number of space-time streams according to the number of active transmit chains, providing a frame with an indication of the maximum number of space-time streams, and transmitting the frame. The wireless devices may provide the indication of the maximum number of space-time streams in an Operating Mode field of High Efficiency Aggregate Control field of the frame. The maximum number of space-time streams may be a maximum number of space-time streams that may be used by the wireless device to respond to a Trigger frame.