System and method for reducing signal interference between Bluetooth and WLAN communications

摘要

Methods and systems are disclosed for reducing signal interference between Bluetooth (BT) and WLAN (e.g. WiFi) communications in an information handling system. The WLAN receiver has configurable front-end filter circuitry. Based upon information concerning the BT frequency region for current BT communications, the WLAN receiver can adjust or set its configurable front-end filter circuitry to filter out the BT communications. As the BT communications hop from frequency to frequency, the WLAN receiver can continue to adjust its configurable front-end filter circuitry accordingly. Example implementations for the configurable front-end filter circuitry include bandpass filters and selectable low pass and high pass filters. These filters are selected and/or tuned such that BT frequency regions are filtered from the WLAN input signal before further WLAN signal processing is conducted, thereby improving the performance of simultaneous BT and WLAN communications.

主权项

1. A method of reducing signal interference between simultaneous Bluetooth and WLAN communications in an information handling system, comprising:
providing an information handling system with a Bluetooth transceiver and a WLAN transceiver, the WLAN transceiver having a configurable front-end filter system including a tunable bandpass filter; identifying a channel for WLAN communications; selecting a channel for Bluetooth communications, the Bluetooth communications configured to utilize a plurality of different channels; determining whether a frequency location for the channel for Bluetooth communications is higher or lower than the channel for WLAN communications; tuning the bandpass filter to pass frequencies including the channel for WLAN communications and to filter the channel for Bluetooth communications; operating the Bluetooth transceiver and the WLAN transceiver to provide simultaneous Bluetooth and WLAN communications; hopping to a different one of the plurality of different channels for the Bluetooth communications; and repeating the determining, tuning, operating and hopping steps for each of the plurality of different channels.