Invention Grant
- Patent Title: Controlled synchronizing of sensor devices in a wireless sensor network based on received drift information
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Application No.: US14740892Application Date: 2015-06-16
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Publication No.: US09801150B2Publication Date: 2017-10-24
- Inventor: Patrick Wetterwald , Pascal Thubert , Eric Michel Levy-Abegnoli
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agent Leon R. Turkevich
- Main IPC: H04W56/00
- IPC: H04W56/00 ; H04W4/00

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.
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Information query