Nextnav, LLC

Koninklijke Philips Corporation N.v.

Ecsite, Inc.

Other

Cisco Technology, Inc.

Netnav, LLC

Commlabs, Inc.

Subramanian S Meiyappan

Arun Raghupathy

Ganesh Pattabiraman

Hari Sankar

Varaprasad Vajjhala

Franklyn H Story

Thomas George Wolf

Deepak Joseph

Ken Jaramillo

Brian Logsdon

James J Jirgal

Edward Michael Petryk

Tom Wolf

Wouter Pelgrum

Vikram V Kalkunte

Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

Wide area positioning system

Systems and methods of radio frequency data mapping are provided. An exemplary method includes moving a mobile mapping system through the environment, the mobile mapping system comprising a location detection element and a radio frequency (RF) instrument which receives data from an antenna of the mobile mapping system; collecting data from the RF instrument at one or more collection locations within the environment, the collected data including received signal strength indicator (RSSI) data; mapping the collected data at least in part based on data received from the location detection element and the RF instrument to form an RF fingerprint of the environment; and using the mapped data to confirm an anticipated environmental RF fingerprint associated with the environment, adjust one or more RF components associated with the environment, or both.

Systems and methods of radio frequency data mapping and collection for environments

Systems and methods of testing cables are provided. An exemplary testing system for testing radio frequency (RF) cables in a telecommunication system including a cable under test includes a termination element configured to be coupled to a distal end of the cable under test; and a controller in communication with the termination element, wherein the controller switches the termination element between two or more termination states selected from the group consisting of an open termination state, a short termination state, a load termination state, and a through state.

Systems and methods of testing cables in telecommunication systems and systems that contain said cables

Positioning systems and methods for estimating an altitude of a receiver. In some embodiments, pressure and temperature information from a network of sensors is received by the receiver, and the pressure and temperature information from the network of sensors is used along with pressure information measured at a position of the receiver to estimate the altitude of the receiver.

Reducing power consumption of a receiver in association with estimating the receiver's position using ranging signals. Systems and methods may determine power reduction strategy information, identify a power reduction strategy using the determined power reduction strategy information, and place one or more modules of the receiver into a reduced power state using the identified power reduction strategy. The power reduction strategy may result in powering off different circuitry of the receiver at different times, and under different circumstances.

Systems and methods for low-power location determination using terrestrial signals

Synchronizing the local time of beacons. Systems and methods discipline a high-stability local clock of a designated beacon within a geographic region to a network time, and synchronize a local clock of another beacon within the geographic region to the network time.

Systems and methods for assured time synchronization of an RF beacon

Systems and methods for improving correlation. In at least one system and method, a signal is received and divided into a plurality of slices. Each of the slices is divided into a plurality of sub-slices. A plurality of chips of a PN code are generated, and sub-slice correlation results are generated in parallel. Summation of the sub-slice correlation results generates a slice correlation results, and the accumulated slice correlation results provide a correlation result.

Methods and systems for improving correlation

Synchronizing the local time of beacons using two way time transfer methods and hardware enabling such methods. Certain systems incorporate receive hardware into beacon circuitry used for transmitting signals so that the beacon can transmit RF signals during transmission periods, and can also receive RF signals from other beacons during non-transmission periods. Receive hardware may be incorporated into beacon circuitry such that the beacon receives an incoming signal and passes that incoming signal to a digital pre-distortion linearization module, which can process that received signal. Methods for controlling whether a beacon transmits RF signals or receives RF signals are also discussed, as are methods for using RF signals received from other beacons for synchronization.

Systems and methods for selectively receiving and processing RF signals at an RF beacon

Controlling access to position information at a receiver, or at another device external to the receiver. Various considerations, including a requested service type, a user type, a device type, a software application type, a payment, and/or other characteristics associated with a particular software application or distributor of that software application, may be used to control access to position information.

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San Jose, CA, United States of America

Subramanian S Meiyappan