Back to results
US 10,389,402 B1Granted
Background noise floor thresholds for frequency hopping systems
AssigneeAmazon Technologies, Inc.
InventorsJustin Joel Krohn, Ronald Eugene Huebner
Life of this patent
Estimating the term…
Abstract
A frequency hopping communication system uses measured intensity values, such as RSSI (received signal strength indication) values, of RF signals previously received on a particular channel to generate a signal threshold that is tailored for the particular channel and is to be applied to subsequent frequency hopping processes. The signal threshold is used for determining whether a received RF signal is from an actual transmission or is merely background noise.
Claims20
A method comprising:
- frequency hopping to a first channel having a first transmission signal, the first transmission signal having a first signal strength;
- measuring the first signal strength;
- locking onto the first channel;
- generating a noise threshold value based, at least in part, on the first signal strength;
- frequency hopping away from the first channel to one or more other channels;
- frequency hopping to the first channel having a second transmission signal, the second transmission signal having a second signal strength;
- measuring the second signal strength;
- and
- determining whether to lock onto the second transmission signal on the first channel, the determining based, at least in part, on whether the second signal strength is greater than the noise threshold value.
6 more elements
A method comprising:
- receiving a first transmission signal via a channel, the first transmission signal having a first signal strength;
- generating a signal threshold value based, at least in part, on the first signal strength;
- frequency hopping between the channel and one or more other channels;
- receiving a second transmission signal via the channel, the second transmission signal having a second signal strength;
- and
- determining whether to lock onto the second transmission signal based at least in part on the second signal strength being greater than the signal threshold value.
3 more elements
A node in a network, the node comprising:
- a processing unit;
- and
- a computer-readable medium storing instructions executable by the processing unit, wherein the instructions program the processing unit to:
- generate a first signal threshold by operations comprising:
- receiving a first signal on a first channel, the first signal having a first received signal strength indication (RSSI) value, and
- generating the first signal threshold for the first channel based, at least in part, on the first RSSI value;
- and
- determine, based at least in part on the first signal threshold, whether to lock onto the first channel during subsequent frequency hop operations based at least in part on a subsequent signal received on the first channel having an RSSI value greater than the first signal threshold, the subsequent frequency hop operations comprising frequency hopping between the first channel and one or more other channels.
5 more elements
Dependencies are inferred from the claim text.