公开(公告)号：US11611907B2

公开(公告)日：2023-03-21

申请号：US17840107

申请日：2022-06-14

Applicant: Silicon Laboratories Inc.

Inventor： Guner Arslan ,  Yan Zhou ,  He Gou

IPC: H04W28/14 ,  H04W4/80 ,  H04L1/16 ,  H04W72/14 ,  H04W72/12 ,  H04W88/06 ,  H04W84/12 ,  H04L1/1607

Abstract: A system and method for detecting the presence of a Bluetooth or Zigbee signal within a short period of time is disclosed. The signal identification circuit has two stages, a first stage that processes windows to determine whether noise is present, and a second stage that processes long windows to determine whether the signal is a particular lower-power network protocol. The signal identification circuit can be configured to detect Bluetooth at 1 Mbps, Bluetooth at 2 Mbps or Zigbee. The signal identification signal may be used to allow a lower-power network controller to coexist with a high duty cycle WiFi controller. The signal identification circuit may also be used for other functions, such as powering on a lower-power network controller, determining CCA, or determining which channel a packet is being transmitted on.

公开(公告)号：US20220312271A1

公开(公告)日：2022-09-29

申请号：US17840107

申请日：2022-06-14

Applicant: Silicon Laboratories Inc.

Inventor： Guner Arslan ,  Yan Zhou ,  He Gou

IPC: H04W28/14 ,  H04W4/80 ,  H04L1/16 ,  H04W72/14 ,  H04W72/12

Abstract: A system and method for detecting the presence of a Bluetooth or Zigbee signal within a short period of time is disclosed. The signal identification circuit has two stages, a first stage that processes windows to determine whether noise is present, and a second stage that processes long windows to determine whether the signal is a particular lower-power network protocol. The signal identification circuit can be configured to detect Bluetooth at 1 Mbps, Bluetooth at 2 Mbps or Zigbee. The signal identification signal may be used to allow a lower-power network controller to coexist with a high duty cycle WiFi controller. The signal identification circuit may also be used for other functions, such as powering on a lower-power network controller, determining CCA, or determining which channel a packet is being transmitted on.

公开(公告)号：US20180287832A1

公开(公告)日：2018-10-04

申请号：US15472609

申请日：2017-03-29

Applicant: Silicon Laboratories Inc.

Inventor： Yan Zhou ,  Amey Naik ,  He Gou

IPC: H04L25/08 ,  H04W52/02 ,  H04W52/52

Abstract: An apparatus includes an RF receiver. The RF receiver includes digital signal arrival (DSA) circuitry to detect an arrival of a received signal in the RF receiver and to indicate arrival of the received signal. The RF receiver further includes detection circuitry to detect a signal from the received signal, and a controller to control operation of the detection circuitry depending on whether the DSA circuitry indicates the arrival of the received signal.