US 12,445,964 B2
Conditional automatic gain control on single station piconet for bluetooth receiver based on connection state
Sriram Mudulodu, Hyderabad (IN)
Assigned to Silicon Laboratories Inc., Austin, TX (US)
Filed by Silicon Laboratories Inc., Austin, TX (US)
Filed on Feb. 28, 2023, as Appl. No. 18/115,759.
Application 18/115,759 is a continuation of application No. 17/974,537, filed on Oct. 27, 2022, granted, now 12,356,329.
Application 17/974,537 is a continuation of application No. 17/106,112, filed on Nov. 29, 2020, granted, now 11,523,340, issued on Dec. 6, 2022.
Prior Publication US 2023/0217370 A1, Jul. 6, 2023
Int. Cl. H04W 52/02 (2009.01); H04L 69/22 (2022.01); H04W 4/80 (2018.01); H04W 52/52 (2009.01); H04W 80/02 (2009.01)
CPC H04W 52/0229 (2013.01) [H04L 69/22 (2013.01); H04W 4/80 (2018.02); H04W 52/0216 (2013.01); H04W 52/52 (2013.01); H04W 80/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing power consumption in a time slotted communication system, the communication system comprising:
an RF front end coupled to an analog to digital converter (ADC), the RF front end receiving a packet having a preamble during a preamble interval, a header containing a destination address during a header interval, and a packet data unit (PDU) during a PDU interval, the RF front end having a connection status of either connected or not connected;
a power controller, an AGC processor, and a packet demodulator coupled to an output of the ADC, the AGC processor maintaining a signal strength value of at least one previously received packet;
a destination address comparator coupled to the output of the packet demodulator;
the method comprising:
when the RF front end has a connection status of connected and no other stations are detected and a current received packet signal strength value differs from a previously received packet signal strength value by less than a threshold, the power controller only applying power to the RF front end for the duration of the PDU interval required to demodulate the PDU;
when the RF front end has a connection status of connected and no other stations are detected and a current received packet signal strength value differs from a previously received packet signal strength by more than the threshold, the power controller only applying power to the RF front end for the duration of the PDU interval required to demodulate the PDU and the AGC processor making a gain correction on a subsequent packet based on the current received packet signal strength value.