US 10,342,028 B2
ZigBee, thread and BLE co-existence with 2.4 GHz WiFi
Terry Lee Dickey, Pflugerville, TX (US); and Hendricus DeRuijter, Austin, TX (US)
Assigned to Silicon Laboratories Inc., Austin, TX (US)
Filed by Silicon Laboratories Inc., Austin, TX (US)
Filed on Jul. 25, 2017, as Appl. No. 15/658,942.
Application 15/658,942 is a continuation in part of application No. 15/084,125, filed on Mar. 29, 2016, granted, now 9,980,277.
Prior Publication US 2017/0325252 A1, Nov. 9, 2017
Int. Cl. H04L 1/16 (2006.01); H04W 4/80 (2018.01); H04W 72/12 (2009.01); H04W 72/14 (2009.01); H04W 84/12 (2009.01); H04W 88/06 (2009.01)
CPC H04W 72/1215 (2013.01) [H04L 1/1685 (2013.01); H04W 4/80 (2018.02); H04W 72/14 (2013.01); H04W 84/12 (2013.01); H04W 88/06 (2013.01); Y02D 70/00 (2018.01); Y02D 70/142 (2018.01); Y02D 70/144 (2018.01); Y02D 70/162 (2018.01)] 21 Claims
OG exemplary drawing
 
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.