Sprint Communications Comapny L.p.

Clearwire IP Holdings L.l.c.

Sprint Spectrum L.p.

Clear Wireless LLC

Harry William Perlow

Walter Fred Rausch

Michael P Denny

George V Moura

Habib Riazi

Anthony A Panella

Robert C Pippert

Steve Dispensa

Gary Thomas Schick

Benjamin E Bellinder

John W Montross

Charles M Woods

Dave McGinniss

Emad M Ramahi

Robert Garrett

Harold Wayne Johnson

Mohan R Tammisetti

Mohammad Wasif Hussain

Bryan H Scott

Rushi D Shah

A wireless communication system beamforms an uplink from an airborne transceiver to a terrestrial transceiver. The airborne transceiver comprises antennas that have an antenna type an aperture beamwidth. The airborne transceiver transfers a transceiver ID to the terrestrial transceiver. The terrestrial transceiver initiates aerial uplink beamforming for the antenna type and the aperture beamwidth based on the airborne transceiver ID. The terrestrial transceiver determines uplink beamforming metrics and altitude for the airborne transmitter. The terrestrial transceiver generates an uplink beamforming instruction and an uplink power instruction for the antenna type and the aperture beamwidth of the airborne transceiver based on the uplink beamforming metrics and altitude. The terrestrial transceiver transfers the uplink beamforming instruction and the uplink power instruction to the airborne transceiver. The airborne transceiver beamforms, amplifies, and transmits an uplink wireless signal to the terrestrial transceiver per the uplink beamforming instruction and the uplink power instruction.

Uplink beamforming between an airborne transceiver and a terrestrial transceiver

Mitigation of interference between wireless network signals and signals emitted from sources external to the wireless network are disclosed. The wireless network signals may include out-of-band emissions that create interference with the signals emitted from the external source. To mitigate the interference, an antenna is provided with sensors configured to detect when a signal is directed at the antenna from the external source. A controller is configured to activate/deactivate signal transmission from the antenna based on feedback from the sensors in order to mitigate interference with the signal emitted from the external source. The sensors may be configured to detect radar emissions or other types of signal emissions.

Mitigating interference related to wireless network signals

Disclosed herein are methods and systems that may help a base station provide high-speed data communication under a protocol such as LTE or WiMAX, even when a GPS signal is not available to the base station.

Alternatives to satellite signals for synchronization in macro network

Disclosed herein are methods and systems that may help a base station provide high-speed data communication under a protocol such as LTE or WiMAX, even when a GPS signal is not available to the base station. In an exemplary embodiment, a base station may acquire a high-stability reference signal via a subcarrier of a terrestrial broadcast signal, such as an FM radio signal, and may coordinate the timing frame transmissions with other nearby base stations, instead of relying upon a GPS signal for such functionality.

Disclosed herein are methods and systems that may help a WiMAX base station function without a GPS signal by providing a high-stability reference signal via a subcarrier of a broadcast signal, such as an FM radio signal. An exemplary broadcast station may therefore be configured to phase-lock a subcarrier signal to a GPS signal, and include this subcarrier in its broadcast signal, thereby providing the subcarrier signal for use by a base station as a high-stability reference signal for local-oscillator stabilization at the base station. The broadcast station may further modulate a timing signal onto the subcarrier signal. An exemplary base station may therefore receive the broadcast signal, decode the broadcast signal to acquire the subcarrier signal, and use the subcarrier signal to stabilize its local oscillator, rather than using a GPS signal. The base station may further demodulate the subcarrier to acquire the timing signal, which the base station may use for frame-start synchronization, instead of a GPS signal.

Subcarrier signal for synchronization in macro network

A fixed-gain power amplifier receives a preamplifier output signal and produces a power output signal. The preamplifier output signal is amplified by the fixed-gain power amplifier to produce the power output signal. The variable-gain preamplifier receives an input signal, a preamplifier control signal, and produces the preamplifier output signal. The input signal is amplified by a preamplifier amount of gain by the variable-gain preamplifier to produce the preamplifier output signal. The preamplifier amount of gain is based on the preamplifier control signal. A variable attenuator receives the power output signal, an attenuator control signal, and produces an output signal. The power output signal is attenuated by an attenuator amount of attenuation by the variable attenuator to produce the output signal. The attenuator amount of attenuation is based on the attenuator control signal.

Variable power amplifier system

Carrier signals for synchronization

In a wireless communication device, circuitry selects a first frequency band for a first wireless communication and transfers a pair of radio frequency signals at the first frequency band. An antenna receives and orthogonally transmits the radio frequency signals over a first patch antenna element that is resonant at the first frequency band. The circuitry selects a second frequency band for a second wireless communication and transfers a pair of radio frequency signals at the second frequency band and including a voltage component. The antenna receives the radio frequency signals including the voltage component, couples a second patch antenna element to the first patch antenna element in response to the voltage component, and orthogonally transmits the radio frequency signals over the coupled patch antenna elements that together are resonant at the second frequency band.

Wireless communication device with a multi-band antenna

A gyroscope monitoring system operates with an antenna system that has a gyroscope that controls the position of multiple antennas. The monitoring system receives data indicating reference signal strengths and test signal strengths for the antennas. The monitoring system determines differences between the reference signal strengths and the test signal strengths. The monitoring system processes the differences to determine if the gyroscope has lost reference point accuracy, and if so, then the monitoring system generates an indication that the gyroscope has lost reference point accuracy. In some examples, the monitoring system also determines reference point offsets for the gyroscope and provides the offsets to the gyroscope for use in motion measurements.

Gyroscope monitoring for an antenna system

a communication system comprises a plurality of downstream transmission systems configured to transmit downstream wireless communications to an area having a plurality of sectors over a plurality of downstream channels to a plurality of users in the plurality of sectors and a plurality of upstream receiver systems configured to receive upstream wireless communications over a plurality of upstream channels from the plurality of users in the plurality sectors. In an embodiment, the plurality of upstream channels comprise multiple contention channels associated with each of the plurality of sectors and a plurality of bearer channels associated with each of the plurality of sectors and the plurality of upstream receiver systems are further configured to receive a plurality of requests from the plurality of users over the multiple contention channels for access to the plurality of bearer channels.

Broadband wireless communications using multiple contention channels

A communication system is supplied for filtering and attenuating a receive signal in between a bi-directional antenna system and a bi-directional base station system. In the communication system, a first circulator is configured to receive a receive signal from a first bi-directional link coupled to the bi-directional antenna system and circulate the receive signal to a first uni-directional link. A signal processing system is configured to receive the receive signal from the first uni-directional link, filter and attenuate the receive signal, and transfer the receive signal to a second uni-directional link. A second circulator is configured to receive the receive signal from the second uni-directional link, circulate the receive signal to a second bi-directional link coupled to the bi-directional base station system, receive a transmit signal from the second bi-directional link, and circulate the transmit signal to a third uni-directional link. Additionally, the first circulator is configured to receive the transmit signal from the third uni-directional link and circulate the transmit signal to the first bi-directional link coupled to the bi-directional antenna system.

Communication system and method for filtering and attenuating a signal between an antenna system and a base station

A time-division communication system wirelessly receives a communication signal during receive time periods and wirelessly transfers a communication signal during transmit time periods. These communication signals have multiple receive and transmit channels. The communication system circulates the received communication signal to various filters that pass particular receive channels and that reflect other receive channels back the circulator(s). Eventually, the reflected receive channels circulate to the appropriate filters and are passed. The filters also pass transmit channels to the circulator(s) where they are circulated and reflected until they combine into the transmit communication signal.

Separation and combination of multiple channels in a bi-directional time-division communication system

A communication system provides communication services to a plurality of communication devices. The communication system includes a transmitting antenna, a transmitter, a first receiving antenna, a second receiving antenna, a second receiver, and a communication interface. The transmitter transmits first wireless signals via the transmitting antenna. The first receiving antenna has a first coverage area of less than forty five degrees. The first receiver receives second wireless signals via the first receiving antenna. The second receiving antenna has a second coverage area of less than forty five degrees, and the second coverage area of the second receiving antenna is within the first coverage area. The second receiver receives third wireless signals via the second receiving antenna. The communication interface provides the communication services between the communication network and the user communication devices.

Communication system with two antennas and two receivers

A system and method for receiving a communication signal includes a timing source that generates a stable timing signal and a stabilized local oscillator that receives the stable timing signal and uses the stable timing signal as an input to generate a stabilized oscillator signal. An antenna receives the communication signal at a receiving frequency, and the communication signal is filtered and amplified. A low noise block converter uses the stabilized oscillator signal to convert the receiving frequency of the communication signal to a stable lower frequency. A fiber optic transmitter converts the communication signal to an optical signal and transmits the optical signal over fiber optic cable. A fiber optic receiver receives the optical signal over the fiber optic cable. The optical signal then can be converted to an electrical signal.

Growing community of inventors

Tarpon Springs, FL, United States of America

Harry William Perlow