Patent ID: 9621207
Date: 2017-04-11
CPC Classifications: H04B

Claim:
1. A method, performed in a communication device, for detecting presence of a jamming signal, the method comprising: retrieving a scan list comprising multiple radio channels within a first frequency range of operation of the communication device; scanning a subset of the channels on the scan list to determine, for each scanned channel, whether energy that exceeds an energy threshold is detected on the scanned channel; determining a first quantitative measure of a first plurality of the scanned subset of the channels having energy that exceeds the energy threshold; comparing the first quantitative measure to at least a first jamming signal detection threshold; indicating, on the communication device, presence of a jamming signal when the first quantitative measure satisfies the at least the first jamming signal detection threshold; when the first quantitative measure fails to satisfy the at least the first jamming signal detection threshold, comparing a second quantitative measure to at least a second jamming signal detection threshold, wherein the second quantitative measure is determined based on a second plurality of the scanned subset of the channels having energy that exceeds the energy threshold; and indicating, on the communication device, presence of the jamming signal when the second quantitative measure satisfies the at least the second jamming signal detection threshold.