Wireless stream broadcast system using spectrum-impact-smoothed channel sequencing and deferred acknowledgments
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United States of America Patent
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Jan 19, 2021
Grant Date -
Feb 7, 2019
app pub date -
Aug 4, 2017
filing date -
Aug 4, 2017
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Abstract
Disclosed herein are wireless devices operable at intermediate wireless at ranges of thousands of meters, utilizing packets that include a preamble and a data payload. Devices may be such things as keypads, door latches, occupancy monitors, sprinkler controllers and other devices needing a communications link. A digital spread-spectrum frequency hopping rotation is used, wherein packet transmissions rotate through frequency sequences. Used is a spectrum-impact-smoothed channel sequence, each channel specifying a unique preamble frequency relative to the other sequences and channels. The set is traversed as a broadcasted stream is transmitted, thereby distributing the focused radio-frequency emission impact of packets having long preambles over time. Packet acknowledgments are deferred until a group of packets in a stream has been exchanged. Detailed information on various example embodiments of the inventions are provided in the Detailed Description below, and the inventions are defined by the appended claims.
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