Honeywell International Inc.

Powerwave Cognition, Inc.

Trilliant Networks, Inc.

Raytheon Company

Hazeltine Corporation

Michael R Franceschini

Kelly P Muldoon

Steven L Timm

Scott Y Seidel

Yunjung Yi

David W Meyers

Mark Rich

Joseph T Merenda

Kirk Bradley

Thomas Hammel

John Burt McKitterick

Robert H Sparr

Jay N Livingston

William G Olsen

Jamal Haque

Vicraj T Thomas

James A Freebersyser

Robert J Breinig

Mark J Rich

Bernd-Peter Paris

Yunjung c/o Honeywell International Inc Patent Services M/S-AB/2B Yi

Kirk Alton Bradley

In one embodiment, a radio altimeter tracking filter is provided. The filter comprises: a wireless radio interface; a processor coupled to the wireless radio interface; a memory coupled to the wireless radio interface; wherein the wireless radio interface is configured to wirelessly receive a radio altimeter signal and convert the radio altimeter signal to a baseband frequency signal, wherein the a radio altimeter signal sweeps across a first frequency spectrum between a first frequency and a second frequency; wherein the processor is configured to pass the baseband frequency signal through a filter executed by the processor, the filter comprising a passband having a first bandwidth, and wherein the filter outputs a plurality of spectral chirps in response to the baseband frequency signal passing through the first bandwidth; wherein the processor is configured to process the plurality of spectral chirps to output characteristic parameters that characterize the radio altimeter signal.

Frequency modulated continuous wave radio altimeter spectral monitoring

Systems and methods to synchronize wireless device nodes in the presence of a FMCW radio altimeter are provided. In one embodiment, a wireless device network comprises: a plurality of device nodes that share a radio frequency spectrum using time-division multiple accesses; a network synchronizing device in wireless communication with the plurality of device nodes, the network synchronizing device coupled to a timeslot allocation function, wherein the timeslot allocation function allocates to the network synchronizing device a timeslot on a first designated synchronization channel within the radio frequency spectrum; wherein the network synchronizing device broadcasts an arbitrary timeslot synchronization beacon to the plurality of device nodes on the first designated synchronization channel in the timeslot; wherein the arbitrary timeslot synchronization beacon comprises a Sync Timeslot identifier that identifies the timeslot, and a Sync Time indicator that includes a time that the arbitrary timeslot synchronization beacon was transmitted.

Systems and methods to synchronize wireless devices in the presence of a FMCW radio altimeter

A wireless device network comprises: an unsynchronized wireless device in a time division multiple access based system; and a cognitive master in communication with the device, wherein the master processor is configured to: determine a number of time slots required for the master to transmit a message to and receive a response from the device, each time slot is a portion of a radio frequency spectrum over a frame period; when the number of time slots required are consecutively available, broadcast an announcement message indicating start of discovery of the unsynchronized device; wherein the device processor is configured to: generate a response message including a device ID; and broadcast the response message to the master; wherein the master processor is configured to: generate a correction factor based on at least one of a master transmit time and a master received time; and broadcast the correction factor to the device.

Delay calculation in wireless systems

In one embodiment, a wireless device network comprises: a plurality of device nodes using TDMA, the plurality of device nodes configured to transmit during a future TDMA frame of communication on channels having timeslots; and a timeslot allocation function comprising a processor and a memory, the processor configured to: receive signal characterization data characterizing a radio altimeter signal; using the signal characterization data, predict a frequency of the radio altimeter signal during the future TDMA frame of communication; identify conflicting timeslots for respective channels, wherein the predicted frequency of the radio altimeter signal overlaps with the respective channels during conflicting timeslots; and transmit a TDMA timeslot allocation, for wireless communications during the future TDMA frame of communication, to the plurality of device nodes, the TDMA timeslot allocation including non-conflicting timeslots where the predicted frequency of the radio altimeter signal does not overlap with the respective channels during non-conflicting timeslots.

Cognitive allocation of TDMA resources in the presence of a radio altimeter

Methods and devices are disclosed of using a Frequency-Modulated-Continuous-Wave (FMCW) radar unit for data communication by receiving a signal with a phase encoded data channel, and processing the signal with the phase encoded data channel to simultaneously determine data and timing information.

FMCW radar with phase encoded data channel

Methods, devices, and systems are disclosed synchronizing clocks of FMCW radar units by transmitting a first signal of a first FMCW radar unit, a frequency of the first signal varying over a first frequency range around a first baseband frequency, receiving a second signal at the first FMCW radar unit, a frequency of the second signal varying over a second frequency range around a second baseband frequency, determining values of a plurality of parameters including a first timing offset of the first FMCW radar unit based on a digital difference signal between the first and second signals, receiving a second timing offset of a second FMCW radar unit, determining a clock offset based on the first and second timing offsets, and synchronizing a clock of the first FMCW radar unit with a clock of the second FMCW radar unit based on the clock offset.

Frequency-Modulated-Continuous-Wave (FMCW) radar with timing synchronization

An avionics system comprises a plurality of avionics components; at least one OFDM transmitter coupled to a respective one or more of the plurality of avionics components and configured to transmit a wireless OFDM signal comprising a plurality of sub-bands; at least one OFDM receiver coupled to a respective one or more of the plurality of avionics components and configured to receive the wireless OFDM signal transmitted by the OFDM transmitter; and a radio altimeter configured to transmit a signal tone that sweeps a frequency spectrum allocated to the radio altimeter at a predefined rate and periodicity. The at least one OFDM transmitter is configured to transmit the wireless OFDM signal in the frequency spectrum allocated to the radio altimeter and to sequentially turn off respective subsets of the plurality of sub-bands in synchronization with the predefined rate and periodicity of the signal tone frequency sweep.

System and method of using radio altimeter frequency spectrum for wireless signals

A wireless communication system comprises one or more control units operable to transmit control signals, a plurality of actuators responsive to the control signals, and a plurality of sensors operable to transmit sensor data used by the one or more control units in generating the control signals. Each of the sensors, actuators, and one or more control units are located at a fixed position in the system relative to one another. Each of the plurality of sensors and each of the plurality of actuators are coupled to at least one of the one or more control units via a plurality of wireless paths. Each of the plurality of sensors are operable to transmit the sensor data in an assigned time slot to at least one of the one or more control units over a plurality of wireless channels in each of the plurality of wireless paths. The number of channels in each of the plurality of wireless paths is determined based, at least in part, on a worst-case estimate of potential interference, and each of the plurality of sensors is operable to pseudo-randomly switch the plurality of channels over which the sensor data is transmitted.

Wireless networks for highly dependable applications

Using bearer channels for wireless nodes includes initiating communication among the wireless nodes that include a node and one or more neighbor nodes. An adaptive channel operable to communicate messages between the node and the neighbor nodes is established. One or more bearer channels are selected. The one or more neighbor nodes are notified of the one or more selected bearer channels using the adaptive channel. The node and the neighbor nodes communicate over the bearer channels.

Method and system for using selected bearer channels

A method of communicating over a network for wireless communications is disclosed. The method transmits encoded data from a source device to a destination device via a single path up through a plurality of wireless paths using a random frequency hopping tuning pattern for wireless communications, and pseudo-randomly varies dwell times of the frequency hopping tuning pattern over which the data is transmitted. The network uses forward-error correction coding redundancy within a data burst to allow recovery of corrupted data in any partially jammed hop of the transmitted data.

System and methods for securing data transmissions over wireless networks

Method and apparatus for providing a wireless mesh network and network node are described. More particularly, a network having network node neighborhoods is described. A node comprises a multi-sectored antenna and a transceiver controller. Nodes are configured for installation without antenna pointing and without pre-coordination with the network. Software architecture for the node is also described.

Wireless mesh network

Adjusting parameters of a waveform includes facilitating wireless communication between a transmitting node and receiving nodes, where the transmitting node communicates with a receiving node over a channel. Spectrum conditions are estimated, where a spectrum condition describes spectrum utilization in the vicinity of surrounding nodes. Channel conditions are estimated, where a channel condition describes a channel of the plurality of channels. Waveform parameters are adjusted in response to the spectrum conditions and the channel conditions.

Growing community of inventors

Centerport, NY, United States of America

Michael R Franceschini