Patents Assigned to mDiversity Inc.
  • Publication number: 20020085622
    Abstract: A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.
    Type: Application
    Filed: July 5, 2001
    Publication date: July 4, 2002
    Applicant: mDiversity Inc. a Delaware Corporation
    Inventors: Naveen Dhar, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore, Gerhard Albert Koepf, Jingqing Xiao
  • Patent number: 6349094
    Abstract: A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of broadcaster transmitters are distributed at macro-diverse locations for transmitting forward channel signals to the users under control of a broadcaster control unit. A plurality of collectors are distributed at macro-diverse locations for receiving reverse channel signals from the users which are processed to yield one or more sequences of data bits as a burst and corresponding initial confidence metrics for each bit. The collectors forward these reverse channel signals including the data bits and corresponding processed confidence metrics to aggregators. The system includes bandwidth control for minimizing backhaul bandwidth from collector to aggregator while maximizing signal quality.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: February 19, 2002
    Assignee: mDiversity Inc.
    Inventors: John Andrew Vastano, Lance Kazumi Uyehara, Ujjal Kumar Ghoshtagore
  • Patent number: 6192038
    Abstract: A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of collectors are distributed at macro-diverse locations for receiving reverse channel signals from the users. Each of the collectors includes micro-diversity receivers for receiving the reverse channel signals from users. The collectors process and forward the reverse channel signals to aggregators. The aggregators combine the reverse channel signals to yield a combined signal with fewer bit errors than occur in the absence of combining.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: February 20, 2001
    Assignee: mDiversity Inc.
    Inventors: John Walker Wallerius, Andrew John Walters, John Andrew Vastano