RF Transceiver Time Slot Coordination for Bluetooth WLAN Interference

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Solution Overview

Problem

Interference between Bluetooth and IEEE 802.11 RF transceiver modules in mobile communication devices disrupts WLAN communication functions, such as voice telephony, due to overlapping RF bands and protocols.

Innovation Solution

A mobile communication device reserves selected timeslots for Bluetooth communication when IEEE 802.11 communication is active, allowing data to be transmitted during unreserved timeslots, ensuring uninterrupted voice telephony and data communication by coordinating the use of both RF transceivers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If Bluetooth inquiry or paging communication functions are performed, then device discovery capability is improved, but WLAN communication quality deteriorates due to interference

Engineering Contradiction:

Improvedevice discovery capabilityVSAvoidWLAN communication quality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the RF spectrum into different frequency bands, assigning Bluetooth operations to one band and WLAN operations to another non-overlapping band. This frequency domain segmentation allows both Bluetooth device discovery and WLAN communication to occur simultaneously without mutual interference, resolving the contradiction between discovery capability and communication quality.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If both Bluetooth and IEEE 802.11 RF transceiver modules operate simultaneously, then communication versatility is improved, but interference between protocols occurs

Engineering Contradiction:

Improvecommunication versatilityVSAvoidinterference between protocols

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a new dimension for resource allocation by implementing time-domain scheduling alongside frequency-domain separation. The system allocates specific time slots for Bluetooth operations and other time slots for WLAN operations, creating a multi-dimensional resource allocation framework that eliminates protocol interference while maintaining communication versatility.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If Bluetooth inquiry functions are performed during active WLAN communication, then device discovery is enabled, but voice telephony function is disrupted

Engineering Contradiction:

Improvedevice discoveryVSAvoidvoice telephony function

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements preliminary action by pre-allocating protected time slots for WLAN voice telephony operations before Bluetooth discovery functions are activated. The system schedules Bluetooth inquiry and paging operations to occur only during designated time periods that do not conflict with voice calls, ensuring that device discovery capabilities are maintained while voice telephony operates without disruption.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10027458B2Methods and apparatus for providing communications with use of first and second RF transceiver modules

Publication Date: 2018.07.17 MALIKIE INNOVATIONS LTD

AI summary

A method of communicating using first and second radio frequency (RF) transceiver modules of a communication device involves reserving selected timeslots for a wireless communication link of a first RF transceiver module; communicating data via the second RF transceiver module during the selected reserved timeslots; and simultaneously communicating data via the first RF transceiver module during remaining unreserved timeslots of the wireless communication link.