Hall Labs LLC

Sure-fi, Inc.

John Robinson

David R Hall

Mark D Hall

Craig Boswell

Warren Willes

Taylor Robbins

Joe R Fox

Devices and methods for enhancing forward error correction techniques for communications using chirp spread spectrum are disclosed. Systems, devices, and methods for error correction coding and decoding are described. On the coding side, K bits of data are sequentially loaded into an M bit by N bit (M×N) matrix in a first direction as Q sequences of D bits, each D bit row of data in the M×N matrix is coded with an error correction code to generate an M bit row of coded data, each Q bit column in the M×N matrix is coded with the error correction code to generate N bits of coded data, N sequences of M bits are sequentially unloaded from the M×N matrix in a second direction, and a chirp signal is generated having a plurality of chirps.

Forward error correction for chirp spread spectrum

Data acquisition in a chirp spread spectrum (CSS) signal may use a data alignment indicator of a single down chirp signal or single upchirp signal. A receiver may receive part or all of a preamble comprising a sequence of training chirps for symbol alignment followed by a single opposite chirp for data alignment. Training chirps may be processed through a fast-Fourier transform (FFT), and the values from the FFT may be accumulated. The accumulated values may exceed a threshold for detection. The receiver may align, based on the received chirps of the preamble and exceeding the threshold, its symbol reception. Using this symbol alignment, the receiver may await a single opposite chirp after the sequence of training chirps. The single opposite chirp may indicate data alignment. Upon receipt of the opposite chirp, the receiver may start data acquisition based on chirps following the single opposite chirp.

Single chirp data alignment for chirp spread spectrum

A chirp spread spectrum (CSS) receiver may reject, based on a data alignment chirp that includes an identifier that is a mismatch to a preconfigured identifier, a message early and before fully receiving/decoding the message. A receiver may receive a sequence of training chirps for symbol alignment followed by a single opposite chirp for data alignment. Training chirps may be processed through a fast-Fourier transform (FFT) and the resulting values accumulated. The receiver may align, based on the received chirps of the preamble and the accumulated values exceeding the threshold, its symbol reception. Using this symbol alignment, the receiver may await a single opposite chirp after the sequence of training chirps. The single opposite chirp may indicate data alignment and comprise an encoded identifier. The receiver may reject the message and terminate further message processing based on the encoded identifier being a mismatch to a preconfigured identifier.

Single chirp data alignment with early message rejection for chirp spread spectrum

Systems, devices and methods for enhancing error correction decoding for communications using chirp spread spectrum are disclosed. A chirp signal having a plurality of chirps is received, a codeword is identified based on at least one of the plurality of chirps, a received signal strength indicator (RSSI) associated with at least a portion of the codeword is identified, at least one decoding threshold is adjusted based on the identified RSSI, and the codeword is decoded using the adjusted at least one decoding threshold.

Threshold driven error correction for chirp spread spectrum

The invention is a method and device for normalizing communication. The method includes receiving on a first device a first message via a first protocol from a second device; transmitting a second message to a third device via a second protocol, wherein the second message is transmitted using a first spreading factor; initiating a delay timer upon transmitting the second message, wherein a duration of the delay timer is based on a second spreading factor, wherein the second spreading factor is greater than or equal to the first spreading factor; receiving a third message from the third device via the second protocol, wherein the third message is transmitted using the first spreading factor, and wherein the third message is in response to the second message; and upon the expiration of the delay timer, sending a fourth message to the second device via the first protocol. The device includes the hardware and instructions to perform the method.

Normalization of communication between devices

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. Devices include an intermediate-range transceiver and a separate deployment wireless interface accessible from a mobile device such as a cellular telephone or portable tablet. Devices can be registered in a database and deployed for use by means of an application running on the mobile device. A scannable label bearing a code can be affixed to a wireless device providing a means of tracking, identifying and verifying a device through the deployment process. 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.

Deployment of intermediate-range devices using a short-range mobile device

An apparatus for distributing data using a short-range wireless interconnection protocol for electronic devices includes a processor communicatively connected, using a communication bus, to a number of originator antennas, each of the number of originator antennas communicating with an originating device, a plurality of device antennas, communicatively connected to the communication bus, each of the plurality of device antennas communicating with a number of client devices, and a non-transitory storage medium. The non-transitory storage medium includes a receive module, a session identify module, and a send module. The receive module receives a data packet using one of the number of originator antennas. The session identify module identifies at least one communication session with at least one remote device associated with one of the plurality of device antennas. The send module sends the data packet to the at least one remote device associated with one of the plurality of device antennas.

Apparatus for distributing short-range wireless signals using an interconnection protocol for electronic devices

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. Devices include an intermediate-range transceiver and a separate short-range wireless transceiver accessible from a mobile device such as a cellular telephone or portable tablet. Devices may bear a scannable label bearing a code providing a means of identification, and can be registered in a database and deployed for use by means of an application running on the mobile device. Intermediate-range communications may be tested during deployment as directed from a mobile device. 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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Spanish Fork, UT, United States of America

John Robinson