Switchable Filter Banks for Co-located Radio Transceiver Interference

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Solution Overview

Problem

The co-location of multiple radio transceivers in a single device leads to significant channel interference and signal degradation due to the limited radio spectrum, impacting the quality of wireless services, particularly when Wi-Fi and IEEE 802.15.4 transceivers operate simultaneously.

Innovation Solution

The implementation of switchable filter banks with bandpass filters and a decision-making mechanism that allocates channels based on application-specific constraints, using a scoring algorithm to prioritize channel allocation and reduce interference, thereby improving the performance of multiple radio transceivers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple radio transceivers are co-located and operate simultaneously, then wireless service capabilities are enhanced, but channel interference and signal degradation occur

Engineering Contradiction:

Improvewireless service capabilitiesVSAvoidchannel interference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The radio spectrum is segmented into different frequency bands, and filter banks are used to divide and isolate specific frequency ranges for different radio transceivers. This segmentation allows multiple transceivers to operate simultaneously in different spectral segments without interfering with each other, resolving the contradiction between enhanced service capabilities and channel interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different frequency allocation strategies are applied to different radio transceivers based on their specific service requirements and operational characteristics. The system dynamically assigns specific frequency bands and channels to individual transceivers, creating localized quality optimization for each transmitter while maintaining overall system compatibility and minimizing interference.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If multiple radio transceivers share the limited radio spectrum, then device functionality is improved, but radio signal quality deteriorates

Engineering Contradiction:

Improvedevice functionalityVSAvoidradio signal quality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The frequency allocation system dynamically adjusts channel assignments and frequency bands for different radio transceivers based on real-time spectrum conditions, service requirements, and interference levels. This dynamic adaptation allows the system to maintain optimal signal quality while supporting multiple transceivers, resolving the contradiction between enhanced device functionality and reliable signal transmission.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements feedback mechanisms that monitor signal quality, interference levels, and spectrum utilization across multiple radio transceivers. Based on this feedback, the frequency allocation algorithm continuously optimizes channel assignments and adjusts operational parameters to maintain high signal quality while supporting diverse device functionalities.

Inventive Principle:

Principle #23Feedback

3Productivity

If radio transceivers operate at overlapping frequency bands, then spectrum utilization is increased, but interference between transceivers increases

Engineering Contradiction:

Improvespectrum utilizationVSAvoidinterference between transceivers

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

Filter banks serve as intermediary components between different radio transceivers operating at overlapping frequency bands. These filters act as mediators that selectively pass desired frequency components while attenuating interfering signals from other transceivers, enabling high spectrum utilization while minimizing inter-transceiver interference through spectral separation.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This solution effectively mitigates channel interference and signal degradation by strategically allocating channels and using filters to attenuate interference, enhancing the performance and sensitivity of co-located radio transceivers, especially in scenarios like asset tracking and IoT applications.

Implementation Method 1

The implementation of switchable filter banks with bandpass filters and a decision-making mechanism that allocates channels based on application-specific constraints

Methodology Applied

Scientific EffectFilter (electronic): Filter (electronic)

Data Source

PatentUS11490439B2System and method for performing multiple radio frequency allocation

Publication Date: 2022.11.01 HEWLETT PACKARD ENTERPRISE DEV LP

AI summary

One embodiment can provide a method and a system for performing multiple radio frequency allocation. During operation, the system including a controller can receive, a Wi-Fi channel allocation and a filter bank configuration associated with a Wi-Fi radio transceiver. The system can determine one or more Internet of things (IoT) radio transceivers operating with the Wi-Fi radio transceiver. For a respective IoT radio transceiver, the system can perform the following operations: determining a set of scores based on a set of constraints associated with an application type for the IoT radio transceiver; and computing a weighted average score based on the set of scores; and determining a channel allocation for the IoT radio transceiver based on the weighted average score and the Wi-Fi channel allocation.