US 12,107,673 B2
Jammer detection system
Peter Shah, San Diego, CA (US); Ajay Devadatta Kanetkar, San Diego, CA (US); Siavash Ekbatani, San Diego, CA (US); Yuanning Yu, Santa Clara, CA (US); Shrenik Patel, San Diego, CA (US); Dongjiang Qiao, San Diego, CA (US); and Rajagopalan Rangarajan, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 7, 2021, as Appl. No. 17/468,281.
Prior Publication US 2023/0073817 A1, Mar. 9, 2023
Int. Cl. H04K 3/00 (2006.01); H04B 17/318 (2015.01)
CPC H04K 3/22 (2013.01) [H04B 17/318 (2015.01); H04K 3/45 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An apparatus for wireless communications, the apparatus comprising:
a jamming detection circuit disposed prior to an analog baseband filter, the jamming detection circuit comprising:
a first counter configured to count a number of times that a power of a reception signal exceeds a first threshold;
a second counter configured to count a number of measurements of the power of the reception signal; and
control logic having a first input coupled to an output of the first counter and having a second input coupled to an output of the second counter, the control logic being configured to:
obtain a first plurality of counter values of the first counter and a second plurality of counter values of the second counter, each counter value of the first plurality of counter values indicating a respective number of times that the power of the reception signal exceeds the first threshold during a respective time interval of a measurement window, and each counter value of the second plurality of counter values indicating a respective number of measurements of the power of the reception signal during the respective time interval of the measurement window;
determine at least one of the respective time intervals is associated with at least one of (i) a transition from a first type of transmit beam to a second type of transmit beam for the reception signal or (ii) a transition from a first gain state to a second gain state for the reception signal;
responsive to the determination, determine an amount of jamming over the measurement window based on a subset of the first plurality of counter values and on a subset of the second plurality of counter values, wherein at least one of the subset of the first plurality of counter values is smaller than the first plurality of counter values or the subset of the second plurality of counter values is smaller than the second plurality of counter values; and
adjust an analog gain of an amplifier based on the amount of jamming.