Randy Ekl
Shmuel Silverman, Randy L Ekl, Robert D LoGalbo, Ron Rotstein: Medium access control for simultaneous channel communications. Motorola, Randi L Karpinia, June 3, 2008: US07382758 (6 worldwide citation)

A method and system for wireless data transmission between at least three stations use multiple frequency bands for simultaneous channel communications. The method includes transmitting a Request To Send (RTS) packet from a first station to an intermediate second station over a first frequency band. ...

Randy Ekl
Robert D LoGalbo, Randy L Ekl, Ron Rotstein, Christopher G Ware: Methods for delivery in a wireless communications network. Motorola, Randi L Karpinia, Indira Saladi, August 5, 2008: US07408931 (5 worldwide citation)

Methods for delivery of multicast packets in a wireless communication system are disclosed. The methods comprise transmitting a contention free period initiation signal from an access point to the station, transmitting broadcast packets from the access point to the station, transmitting multicast pa ...

Randy Ekl
Randy L Ekl, George Popovich, Shmuel Silverman, Robert D LoGalbo: Method for performing a seamless handoff in a communication system. Motorola, Terri S Hughes, Indira Saladi, June 6, 2006: US07058030 (5 worldwide citation)

Disclosed is a method for performing handoff in a communication system of access points and a mobile station, where the mobile station is associated with a first access point. The first access point receives a first transmission at a first signal quality from the mobile station and receives a second ...

Bradley M Hiben, Donald G Newberg, Robert D Logalbo: Method and apparatus for automatic frequency and bandwidth control. Motorola, James A Coffing, November 7, 1995: US05465410 (136 worldwide citation)

An FM receiver (100) that includes a plurality of filtering elements (120-124) that have various center frequencies and bandwidths that adjust to maximize the signal quality of a desired signal (104) recovers the desired signal (104) by inputting the desired signal (104) to each of the plurality of ...

David P Helm, Alan L Wilson, Robert D LoGalbo: Method and apparatus for performing diversity voting in a communication system. Motorola, Daniel C Crilly, February 17, 1998: US05719871 (40 worldwide citation)

A communication system (200) employs a method and apparatus for performing diversity voting in the communication system. A comparator (206) receives a signal frame (207-209) of code words from each of multiple signal sources (202-204). A prioritized code word of each signal frame occupies a correspo ...

Bradley M Hiben, Kevin G Doberstein, Donald G Newberg, Robert D Logalbo: Time and bandwidth scalable slot for mobile data system. Motorola, Steve R Santema, Terri S Hughes, April 13, 2004: US06721267 (37 worldwide citation)

A scalable slot format defining positions of synchronization symbols, pilot symbols and data symbols for various numbers of sub-channels and various lengths of time in a multi-carrier communication system. An initial pattern (

Robert D LoGalbo, Bradley M Hiben, Mark C Cudak: Method for enhancing signal quality in a simulcast communication system. Motorola, Christopher P Moreno, Timothy W Markinson, June 6, 1995: US05423059 (34 worldwide citation)

In a simulcast communication system (100), a communication unit (110-115) may request enhanced coverage area services by transmitting a request for enhanced signal quality to a central simulcast controller (101). Upon receipt, the central simulcast controller (101) identifies, based on information p ...

Robert D LoGalbo, Alan P Conrad, Gregory A Dertz, Bradley M Hiben, Donald G Newberg: Slot format and acknowledgement method for a wireless communication system. Motorola, Indira Saladi, Steven R Santema, September 20, 2005: US06947446 (22 worldwide citation)

A slot format and acknowledgment method for use in a communication network that contains one or more wireless links. The slot format provides for the segmenting and reassembly of packets for transport over a wireless link. It also provides support for multiple types of service for the data being car ...

Robert D Logalbo, Alan P Conrad, Darrell J Stogner, Jeffrey S Anderson: Methods of addressing and signaling a plurality of subscriber units in a single slot. Motorola, Terri S Hughes, August 9, 2005: US06928065 (20 worldwide citation)

In a system having at least a first slot (104) and a first header (106), at least one field is provided in the first header (106). The first slot (104) is configured into at least a first segment and a second segment or into at least a signaling communications path comprising a plurality of messages ...

Robert D LoGalbo, Mark C Cudak, Bradley M Hiben: Synchronization method and apparatus. Motorola, Wayne J Egan, June 15, 1993: US05220676 (20 worldwide citation)

An improved synchronization method and apparatus, according to the invention, is provided. According to the invention, in a simulcast system having a remote site receiving frames from a base site, each frame containing a predetermined number (k) of transmit sample periods, and the transmit sample cl ...

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