Collocated Transceiver Coexistence Using Dynamic NAV Reset

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Solution Overview

Problem

Conventional coexistence techniques for collocated transceivers in wireless devices are inefficient due to underprotection or overprotection of shared communications media, leading to suboptimal usage and data throughput.

Innovation Solution

Implementing protection and control frames to dynamically manage medium access by collocated transceivers, using CTS-to-Self and CF-End frames to precisely time medium allocation based on actual activity, thereby reducing underprotection and overprotection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional coexistence techniques are used for collocated transceivers, then medium access is managed, but efficiency of medium usage and data throughput deteriorate due to underprotection or overprotection

Engineering Contradiction:

Improveefficiency of medium usageVSAvoidprotection of medium access

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic medium access management by using control frames (CTS-to-Self and CF-End) that adapt protection duration based on actual transceiver activity. The system continuously monitors RF active signals and adjusts NAV reset timing accordingly, transitioning from static to dynamic protection mechanisms that optimize both efficiency and reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system employs feedback mechanisms by monitoring the assertion and de-assertion of RF active signals from transceivers. This feedback loop enables the system to detect actual medium usage patterns and adjust protection frame timing dynamically, ensuring optimal balance between underprotection and overprotection scenarios.

Inventive Principle:

Principle #23Feedback

2Productivity

If conventional coexistence techniques are used, then medium access is managed, but data throughput deteriorates due to suboptimal usage

Engineering Contradiction:

Improvedata throughputVSAvoidtime allocation for medium access

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent uses CTS-to-Self frames to preliminarily reserve medium access rights before actual data transmission. By pre-establishing protection windows based on anticipated transceiver activity, the system optimizes time allocation and prevents unnecessary delays, thereby improving data throughput while minimizing time loss.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes the duration parameter of protection frames based on actual RF signal activity. By adjusting the NAV reset timing according to measured transceiver behavior, the system optimizes medium access time allocation, reducing both overprotection delays and underprotection conflicts, thus improving overall data throughput.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12484089B2Systems, methods, and devices for protection management-based coexistence enhancement in wireless devices

Publication Date: 2025.11.25 INFINEON TECHNOLOGIES AMERICAS CORP

AI summary

Systems, methods, and devices enhance performance of collocated transceivers in wireless devices. Methods include identifying, using a processing device, an assertion of a radio frequency (RF) active signal, canceling activity of a first transceiver in response to identifying the assertion of the RF active signal, the RF active signal being associated with a second transceiver collocated with the first transceiver, and generating, using the processing device, a network allocation vector (NAV) reset signal in response to identifying a de-assertion of the RF active signal, the NAV reset signal resetting a timer of a wireless device comprising the first transceiver and the second transceiver.