US Patent No. 10,342,028

ZIGBEE, THREAD AND BLE CO-EXISTENCE WITH 2.4 GHZ WIFI


Patent No. 10,342,028
Issue Date July 02, 2019
Title Zigbee, Thread And Ble Co-existence With 2.4 Ghz Wifi
Inventorship Terry Lee Dickey, Pflugerville, TX (US)
Hendricus DeRuijter, Austin, TX (US)
Assignee Silicon Laboratories Inc., Austin, TX (US)

Claim of US Patent No. 10,342,028

1. A system comprising:a WIFI controller, comprising an aggregate request signal used as an input to request exclusive access to a shared medium and a grant signal used as an output indicating that the exclusive access to the shared medium has been granted;
a lower-power network controller, comprising a processing unit and an associated memory element, wherein the lower-power network controller is configured to assert a request signal if an incoming lower-power network packet is destined for this controller or if an outgoing lower-power network packet is to be transmitted; and
an early packet detection block to detect a lower-power network signal on the shared medium and assert a request signal for a predetermined duration in response to the detection, wherein the early packet detection block monitors phase, frequency and/or amplitude of signals on the shared medium to detect a lower-power network signal.