System, method and apparatus employing tone and/or tone patterns to indicate the message type in wireless sensor networks
OwnerAbtin Keshavarzian, Lakshmi Venkatraman +3inventors
InventorsAbtin Keshavarzian, Lakshmi Venkatraman, Dhananjay Lal, Arati Manjeshwar, Bhaskar Srinivasan
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Abstract
A system and method for operating a wireless network provides for sending a wakeup tone, periodically waking up from a sleep mode to listen for the wakeup tone, upon receiving the wakeup tone, listening for at least one second tone, the at least one second tone being one of (i) a tone in a frequency different from the wakeup tone and (ii) a pattern of tones including at least one frequency different from the wakeup tone, and upon receiving the at least one second tone, performing an action based on the at least one second tone.
Claims20
A method of operating a wireless network, the method including:
- sending a wakeup tone;
- periodically waking up from a sleep mode to listen for the wakeup tone;
- upon receiving the wakeup tone, listening for at least one second tone, the at least one second tone being one of (i) a tone in a frequency different from the wakeup tone and (ii) a pattern of tones including at least one frequency different from the wakeup tone;
- and
- upon receiving the at least one second tone, performing an action based on the at least one second tone.
A wireless network, comprising:
- a receiver node that includes:
- an arrangement to receive a plurality of tones each at a predefined frequency;
- an energy storage arrangement;
- and
- a control arrangement to operate the receiver node in a sleep mode to conserve energy,
- wherein the receiver node is configured to periodically wake up from the sleep mode to listen for a wakeup tone, and upon receiving the wakeup tone, listening for at least one second tone, the at least one second tone being one of (i) a tone in a frequency different from the wakeup tone and (ii) a pattern of tones in at least one frequency different from the wakeup tone.
A wireless node, comprising:
- a power storage arrangement;
- and
- an arrangement to receive a plurality of tones each at a predefined frequency,
- wherein the wireless node is configured to periodically listen for a wakeup tone, and upon receiving the wakeup tone, listening for at least one second tone, the at least one second tone being one of (i) a tone in a frequency different from the wakeup tone and (ii) a pattern of tones that includes at least one frequency different from the wakeup tone.
Dependencies are inferred from the claim text.