1
Gurney David P, Chaudhri Apoorv, Rao Yadunandana N, Simms Matthew E: Method and apparatus for spectrum sharing between an incumbent communication system and a cognitive radio system. Motorola, Gurney David P, Chaudhri Apoorv, Rao Yadunandana N, Simms Matthew E, DOUTRE Barbara R, February 5, 2009: WO/2009/018300 (14 worldwide citation)

Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 152) and at least one cognitive radio (CR) system (105) is provided. The incumbent system's system parameters and CR system's operational requirements are copied to a mirrored database (106B). The mirro ...


2
Gurney David P, Chiou Wayne W, Ekl Randy L, Weisman Douglas H: Method for addressing user location errors in a cognitive radio system. Motorola, Gurney David P, Chiou Wayne W, Ekl Randy L, Weisman Douglas H, DOUTRE Barbara R, March 12, 2009: WO/2009/032554 (8 worldwide citation)

A cognitive radio (CR) system (102) includes CR units (108, 110) that determine and update location-based system operating parameters to avoid interference with other systems operating in the same frequency band. Operational Location Uncertainty region and Allowed Location Error regions can be appli ...


3
Chaudhri Apoorv, Gurney David P, Rao Yadunandana N: Coexistence and incumbent protection in a cognitive radio network. Motorola, Chaudhri Apoorv, Gurney David P, Rao Yadunandana N, Doutre Barbara R, December 23, 2009: WO/2009/155016 (2 worldwide citation)

A method (300, 400) and a communication system (104, 106, 200) for dynamic RF spectrum allocation among a plurality of RF transmitters (108, 110, 112). A message can be received from a first communication system. The message can include a request (130) for available RF spectrum over which to transmi ...


4
Kuffner Stephen, Collins Timothy, Eastmond Bruce, Gurney David P: Method and apparatus for electronic item identification in a communication system using known source parameters. Motorola, Kuffner Stephen, Collins Timothy, Eastmond Bruce, Gurney David P, MILLER Thomas V, December 16, 2004: WO/2004/110079 (1 worldwide citation)

A communications method (fig. 5) including the steps of: receiving signals from at least one signal source during a first signal source transmission (510); estimating at least one signal source parameter based on the received signals during the first signal source transmission (520); receiving signa ...


5
Kuffner Stephen, Collins Timothy, Gurney David P, Rachwalski Richard S: Method and apparatus for source device synchronization in a communication system. Motorola A Corporation Of The State Of Delaware, Kuffner Stephen, Collins Timothy, Gurney David P, Rachwalski Richard S, MILLER Thomas V, September 23, 2004: WO/2004/082304 (1 worldwide citation)

A communications method including the steps of: activating a plurality of signal sources, and transmitting a synchronization event to the plurality of signal sources to cause the plurality of signal sources to simultaneously transmit data in response to the synchronization event.


6
Kuffner Stephen, Gurney David P: Method and apparatus for adaptive processing gain for multiple source devices in a communications system. Motorola A Corporation Of The State Of Delaware, Kuffner Stephen, Gurney David P, MILLER Thomas V, September 23, 2004: WO/2004/082305

A method of dynamically adapting the number of available channels in a first set of available channels for use by at least one signal source in a communications system. The method includes the steps of computing at least one received signal statistic (2516, 2520, 2524, 2528, 2532); determining an ad ...


7
Gurney David P, Ayoub Ramy S, Belcea John M, Bonta Jeffrey D, Braun Mark R, Corke Robert J, Hansen Mark D, Silk S David, Ware Christopher G: Method and apparatus for operating a node within a mobile ad hoc cognitive radio network. Motorola, Gurney David P, Ayoub Ramy S, Belcea John M, Bonta Jeffrey D, Braun Mark R, Corke Robert J, Hansen Mark D, Silk S David, Ware Christopher G, KARPINIA Randi L, June 11, 2009: WO/2009/073333

A method and apparatus for operation of a node (102, 104, 106) within a mobile ad hoc cognitive radio network (100) is provided. The method includes sensing at least one assigned communications channel. Sensing at least one assigned communications channel includes measuring a value of at least one p ...


8
Kuffner Stephen L, Ecklund Lawerence M, Gurney David P: Method and apparatus for controlling transmit power and incumbent protection in a cognitive radio system. Motorola, Kuffner Stephen L, Ecklund Lawerence M, Gurney David P, DOUTRE Barbara Ret al, August 13, 2009: WO/2009/099792

A cognitive radio (CR) device (208 and/or 218) avoids interference with an incumbent (207) receiver by determining maximum allowed transmit power levels of the CR device based on estimates of the incumbent signal level and transmit splatter levels of the CR device. The CR device (208 and/or 218) avo ...