Dual Media Access Controller Wireless Channel Migration

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Solution Overview

Problem

Wireless communications in crowded bands like ISM are prone to interference, leading to degraded user experience and service disruptions due to latency issues, especially in human interface devices that require low latency.

Innovation Solution

A dual band integrated circuit with two media access controllers (MACs) that can initiate connections on one channel, scan for available channels, migrate connections to avoid interference, and combine MACs for improved throughput and signal quality, while maintaining uninterrupted data transmission and adhering to regulatory DFS channel availability checks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless devices use crowded ISM bands for communication, then communication coverage and device compatibility are improved, but interference increases leading to degraded user experience and service disruptions

Engineering Contradiction:
Improvecommunication coverageVSAvoidinterference
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary scanning of available channels before establishing connections. The media access controller scans multiple wireless channels in advance to identify suitable channels with lower interference, then migrates connections to these pre-identified channels when interference is detected on current channels.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors wireless channel conditions and provides feedback to trigger channel migration. When interference or latency issues are detected on the current channel, the system feeds back this information and automatically migrates the connection to an alternative channel, creating a closed-loop adaptive system.

Inventive Principle:
Principle #23Feedback

2Reliability

If channel scanning is performed frequently to avoid interference, then service disruption is reduced, but latency increases due to the time spent scanning

Engineering Contradiction:
Improveservice continuityVSAvoidlatency
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary channel scans in advance before they are needed. By proactively scanning for available channels and storing this information, the system prepares alternative channels beforehand, so when interference is detected, migration can occur quickly without extensive scanning delays.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts scanning behavior based on current channel conditions. When interference is detected, scanning intensity increases to find alternative channels. When channels are stable, scanning frequency is reduced to minimize latency impact on normal data transmission.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If dual media access controllers are used for channel migration, then channel availability and interference avoidance are improved, but device complexity increases

Engineering Contradiction:
Improvechannel availabilityVSAvoidcontroller architecture
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The dual media access controllers are designed with multi-functionality. Each controller can perform both data transmission and channel scanning functions. The second controller can scan channels while the first handles active connections, and they can swap roles as needed, reducing the need for dedicated separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges the functionality of multiple controllers into a coordinated pair working together. The first media access controller maintains the active wireless connection while the second scans for alternative channels. They are combined in a single integrated circuit chip, sharing common resources while providing enhanced channel availability capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10728821B2Migrating wireless channels using dual media access controllers
Publication Date: 2020.07.28 MICROSOFT TECHNOLOGY LICENSING LLC
  • US10728821B2 patent drawing
  • US10728821B2 patent drawing
  • US10728821B2 patent drawing

AI summary

The claimed subject matter includes techniques for migrating wireless channels. An example method includes initiating, via a first media access controller on an integrated circuit chip, a first connection on a first wireless channel. The example method also includes performing, via a second media access controller on the integrated circuit chip, a scan on additional wireless channels using a second media access controller. The example method also includes detecting, via the second media access controller, an available wireless channel from the additional wireless channels. The method further includes migrating, via the first media access controller, the first connection from the first wireless channel to the available wireless channel. The method further includes combining the second access media controller with the first media access controller to provide increased throughput or signal quality on the available wireless channel.