CONTROLLED SYNCHRONIZING OF SENSOR DEVICES IN A WIRELESS SENSOR NETWORK BASED ON RECEIVED DRIFT INFORMATION
First Claim
1. A method comprising:
- receiving, by an apparatus from each of a plurality of wireless sensor devices in a wireless sensor network, clock drift information associated with a clock in the corresponding wireless sensor device;
determining for each wireless sensor device, by the apparatus, an expected clock drift based at least on the clock drift information from the corresponding wireless sensor device; and
sending, by the apparatus to each wireless sensor device, a corresponding drift compensation command for correcting the corresponding expected clock drift, enabling controlled synchronization of the corresponding wireless sensor device within the wireless sensor network.
1 Assignment
0 Petitions
Accused Products
Abstract
In one embodiment, a method comprises receiving, by an apparatus from each of a plurality of wireless sensor devices in a wireless sensor network, clock drift information associated with a clock in the corresponding wireless sensor device; determining for each wireless sensor device, by the apparatus, an expected clock drift based at least on the clock drift information from the corresponding wireless sensor device; and sending, by the apparatus to each wireless sensor device, a corresponding drift compensation command for correcting the corresponding expected clock drift, enabling controlled synchronization of the corresponding wireless sensor device within the wireless sensor network.
19 Citations
21 Claims
-
1. A method comprising:
-
receiving, by an apparatus from each of a plurality of wireless sensor devices in a wireless sensor network, clock drift information associated with a clock in the corresponding wireless sensor device; determining for each wireless sensor device, by the apparatus, an expected clock drift based at least on the clock drift information from the corresponding wireless sensor device; and sending, by the apparatus to each wireless sensor device, a corresponding drift compensation command for correcting the corresponding expected clock drift, enabling controlled synchronization of the corresponding wireless sensor device within the wireless sensor network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus comprising:
-
a device interface circuit configured for receiving, from each of a plurality of wireless sensor devices in a wireless sensor network, clock drift information associated with a clock in the corresponding wireless sensor device; and a processor circuit configured for determining, for each wireless sensor device, an expected clock drift based at least on the clock drift information from the corresponding wireless sensor device, the processor circuit further configured for generating, for transmission by the device interface circuit to each wireless sensor device, a corresponding drift compensation command for correcting the corresponding expected clock drift, enabling controlled synchronization of the corresponding wireless sensor device within the wireless sensor network. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. One or more non-transitory tangible media encoded with logic for execution by a machine and when executed by the machine operable for:
-
receiving, by the machine from each of a plurality of wireless sensor devices in a wireless sensor network, clock drift information associated with a clock in the corresponding wireless sensor device; determining for each wireless sensor device, by the machine, an expected clock drift based at least on the clock drift information from the corresponding wireless sensor device; and sending, by the machine to each wireless sensor device, a corresponding drift compensation command for correcting the corresponding expected clock drift, enabling controlled synchronization of the corresponding wireless sensor device within the wireless sensor network. - View Dependent Claims (18, 19, 20)
-
-
21-23. -23. (canceled)
Specification