Harris Corporation

Eagle Technology, LLC

Pine Valley Investments, Inc.

The Whitaker Corporation

Daniel Wayne Ericson

Thomas Andrew Hengeveld

Jun Ni

Dennis Michael Martinez

Mac Lamar Hartless

Dennis Layne

Gregory Henderson

Reid Henry Johnson

Nathan T Prosser

Catherine D Royster

William D Haymond

Albert J Bruso

Liang Ban

Brett L Hansmeier

Yuan Chen

Systems and methods for operating a communication device so as to mitigate intermodulation interference to a signal. The methods comprise: continuously monitoring several communication channels by the communication device; using a noise floor level estimate of the communication device to detect when the communication device is under an influence of hig interference; determining an optimal level of attenuation to be applied by a variable attenuator of the communication device's receiver so as to mitigate the influence of intermodulation interference to the signal; and selectively adjusting an amount of attenuation being applied by the variable attenuator to achieve the optimal level of attenuation for mitigating intermodulation interference.

System and method for mitigating broadband interference

Systems and methods for mitigating broadband and/or Intermodulation ('IM') interference. The methods comprise: monitoring performance of at least one demodulator performance metric of a communication device; detecting when the communication device is under or will be under an influence of IM interference based on a performance of the at least one demodulator performance metric; determining an improved level of gain to be applied to (i) a variable attenuator of the communication device or (ii) a variable gain low noise amplifier of the communication device; and selectively adjusting an amount of gain being applied by the variable attenuator or variable gain low noise amplifier based on the improved performance achieved with new level of attenuation.

System and method for optimizing intermodulation performance of receivers

Cooperative multi-node MIMO communications involves a second wireless communication device (WCD) or more generally a self-selection of devices which selectively assists a first WCD with respect to communication of a first message to a third WCD. This assistance involves transmitting the first message using the second wireless communication device. More particularly, transmission of the first message by the second wireless communication devices is performed synchronously with at least one retransmission of the first message by the first wireless communication device. This retransmission is performed at a predetermined re-transmission time known to both the first and second wireless communication devices.

Cooperative multi-node MIMO for enhanced device to device communications

A method for registration and maintenance of a data connection using a proxy wireless network service involves registering a multi-network terminal on a first network that is made up of a first network infrastructure. The method includes transmitting registration information for a second network to a proxy component that is part of the first network infrastructure. The transmission of the registration information causes the proxy component to forward said registration information to an agent component that is part of the second network that is made up of a second network infrastructure. The method also includes receiving a registered service from the second network based on the registration information that was transmitted to the first network infrastructure. The method also includes transmitting a message to the second network and receiving the registered service from the second network in response to the message.

Systems and methods registration and maintenance of wireless clients via a  proxy wireless network service

Method for mitigating interference is established by means of a local wireless communication () between a first portable communication device (PCD) () and a second PCD (). The first and second PCD () respectively communicate with first wireless network () and second wireless network () having different wireless air interface protocols. The local wireless communication link () is used to share () information () concerning one or both of the first and second PCD. The information is then used to determine a communication priority () as between the first and second PCD with respect to at least one communication mode. The information is also used to selectively establish () an interference mitigation policy () to provide assured communications for the PCD with priority. The interference mitigation policy is executed () in the first and second PCD to cooperatively provide assured communication for the PCD with priority.

Interference management service for portable communication devices

In accordance with a first aspect, a method, apparatus and system is disclosed for communicating within a TDMA communication system comprising receiving data from a plurality of transmitters in a stream of TDMA super-frames, wherein each transmitter transmits payload data in one particular frame within a defined super-frame, each super-frame comprising M frames, where M is a positive integer greater than one, determining, using a processor, a quality of received data from said transmitters, and if the quality of received data from one of said transmitters is below a quality threshold, granting said one of said transmitters the right to transmit data within a second frame in said super-frames, and collectively processing in a processor said data in both frames of said super-frame assigned to said one of said transmitters to reconstruct said data from said one of said transmitters Also, a method, apparatus and system for processing data received in a TDMA communication system utilizing a stream of TDMA super-frames, each super-frame having a structure comprising M frames, each frame designed to carry data of a duration of Y time units, from a different communication channel, where Y is a positive integer, said method comprising dividing said super-frame into N/M hyper-frames, where N is a factor of M, and partitioning said data from each of said transmitters into mini-frames of duration Y/N and interleaving said mini-frames of data from each of said transmitters into a TDMA transport stream comprising super-frames of M*N mini-frame.

TDMA voice communication method and apparatus

Systems () and methods for providing TDMA communication. The methods involve determining a channel quality of an uplink channel. A communication delay is set equal to an integer value 'K'. 'K' is selected based on the channel quality. &#x201c;K&#x201d;&#x2266;&#x201c;N&#x201d;. &#x201c;N&#x201d; is a total number of frames of a time slot of a TDMA signal (). Thereafter, First Message Data (FMD) is communicated over the uplink channel in a first time slot (A) of an uplink signal (). An Error Control Process (ECP) is performed using FMD to at least identify First Error Free Message Data (FEFMD). Filler data and/or at least a portion of FEFMD is communicated over a downlink channel in a last &#x201c;N&#x2212;K&#x201d; frames of a time slot (A) of a downlink signal (), when &#x201c;K&#x201d;&#x3c;&#x201c;N&#x201d;.

Systems and methods for time division multiple access communication with automatic repeat request error control

A method and apparatus for communicating wirelessly comprising creating a plurality of sub-carrier signals by quadrature amplitude modulating data onto a plurality of sub-carrier frequencies spaced apart by a sub-carrier frequency spacing interval, frequency shifting the sub-carrier signals by one half of the sub-carrier frequency spacing interval, and modulating the sub-carrier signals onto a radio frequency carrier wave for wireless transmission.

Method and apparatus for high speed data transmission modulation and demodulation

A wireless communication network is provided that includes a plurality of communication cells each defined by at least one communication coverage area and a plurality of access points each corresponding to a different one of the plurality of communication cells. Each access point is configured to communicate on a first frequency with at least one of (i) a subscriber in the at least one communication coverage area in a first communication cell and (ii) a subscriber in a second communication cell. Each access point is further configured to communicate on a second frequency with an access point in a third communication cell.

Wireless communication network providing multi-hop communications

A wireless communications system has a plurality of base stations , a plurality of mobile vehicular repeater units , and a plurality of portable units . In a public safety network context, each mobile vehicular repeater unit is associated with a portable unit , and both are associated with a single user. The object is for the user to be able to access the wireless network for any geographic location. In cases where a geographic area is shadowed from a base station and communication directly between the portable unit and the base station is not possible, it is beneficial to use the mobile vehicular repeater unit as a vehicular repeater to relay communications between the portable unit and the base station . When the mobile vehicular repeater unit is operating as a repeater and communicating with the portable units, the frequency plan for transmission and reception is reversed.

Growing community of inventors

Hollis, NH, United States of America

Daniel Wayne Ericson