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公开(公告)号：US10374931B2
公开(公告)日：2019-08-06
申请号：US15480012
申请日：2017-04-05
Applicant: Hall Labs LLC
Inventor： David R. Hall , Craig Boswell , Everett D. Robinson
Abstract: Disclosed herein are hub-based wireless networks employing end-devices at intermediate wireless at ranges of thousands of meters. End-devices may be such things as keypads, door latches, occupancy monitors, sprinkler controllers and other devices controlled or monitored in a campus or a collection of buildings. A synchronous mode is used requiring each paired end-device to timely respond to regular packets initiated at a hub. The hub monitors the quality of a communications link on a channel to each end-device, and applies varying levels of redundancy based upon a recent history of success and failure of packet exchanges, which measurement may be a value of badness increased as errors are encountered and decreased as packet communication is successful. 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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公开(公告)号：US10897771B2
公开(公告)日：2021-01-19
申请号：US15669047
申请日：2017-08-04
Applicant: Hall Labs LLC
Inventor： David R. Hall , Craig Boswell , Everett D. Robinson , Joe Fox
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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公开(公告)号：US10333582B2
公开(公告)日：2019-06-25
申请号：US15612291
申请日：2017-06-02
Applicant: Hall Labs LLC
Inventor： David R. Hall , Craig Boswell , Everett D. Robinson , Joe Fox
IPC: H04B1/707 , H04L12/741 , H04W56/00 , H04L1/16
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. A spectrum-impact-smoothed channel set is fashioned using sequences that each specify a unique preamble frequency relative to the other sequences and channels. The set is traversed as packets are transmitted, thereby distributing the focused radio-frequency emission impact of packets having long preambles over time. Channel directives are issued in stream packets, and acknowledgments to channel directives are made using a time-conserving abbreviated format. 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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公开(公告)号：US10278181B2
公开(公告)日：2019-04-30
申请号：US15434725
申请日：2017-02-16
Applicant: Hall Labs LLC
Inventor： David R. Hall , Mark Hall , Craig Boswell , Everett D. Robinson
Abstract: Disclosed herein are low data rate electronic devices capable of wireless communication at ranges of thousands of meters. These devices may be such things as keypads, door latches, occupancy monitors, sprinkler controllers and other devices controlled or monitored in a campus or a collection of buildings. These devices operate at intermediate ranges in RF congested areas and failure-intolerant situations through the use of discrete programmable channels. Devices may measure the quality of a communications link on a channel, and apply varying levels of redundancy based upon a recent history of success and failure of packet transmission to other distant devices, which measurement may be a value of badness increased as errors are encountered and decreased as packet communication is successful.
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