Patents by Inventor Farid T. Khafizov

Farid T. Khafizov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7299064
    Abstract: A method for operating a base station to service data communications in a cell/sector of a digital cellular wireless system. Data user forward link transmit power within the cell/sector is allocated. A data user Fundamental Channel (FCH) forward link transmit power reserve level upper limit (fd,max) and a data user FCH forward link transmit power reserve lower limit (fd,min) are set. A data user FCH forward link transmit power reserve level (fd) is initialized. The base station is operated to allocate FCHs to data users within the cell/sector, deallocate FCHs to data users within the cell/sector, allocate SCHs to data users within the cell/sector, and to deallocate SCHs to data users within the cell/sector. The SCHs are allocated so that the data user FCH forward link transmit power reserve level is maintained. Based upon at least one current data user operating condition in the cell/sector fd is adjusted. Operation prevents fd from violating fd,max or fd,min.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: November 20, 2007
    Assignee: Nortel Networks Limited
    Inventors: David Paranchych, Farid T. Khafizov
  • Patent number: 6862268
    Abstract: A method and apparatus for implementing a supplemental channel in an IS-2000 CDMA network includes a system that determines when to initiate a supplemental channel transmission, when to terminate a supplemental channel transmission, the period or duration of a supplemental channel, and, finally, the data rate of the supplemental channel. In short, an implementation for a supplemental channel is provided that considers the power capacity of the BTS, the desire to minimize interference, the desire to maximize revenue and the number of users, and the desire to minimize the probability of blocking (a user being denied access).
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: March 1, 2005
    Assignee: Nortel Networks, LTD
    Inventors: Nishith D. Tripathi, Farid T. Khafizov, Venkata S. Alapati
  • Publication number: 20030125035
    Abstract: A method for servicing data communications in a cellular wireless communication system supports data communications on fundamental channels (FCHs) and supplemental channels (SCHs). The method includes first determining an operational relationship between a burst duration and a burst delay of the SCHs and Transmission Control Protocol (TCP) layer throughput provided by the cellular wireless communication system. The operational relationship relates TCP layer throughput as a function of the burst duration and burst delay of the SCHs. Then, the method includes servicing, by a base station of the cellular wireless communication system, data communications for a plurality of wireless terminals using a plurality of FCHs and at least one SCH. In servicing the data communications, the burst duration and the burst delay of the at least one SCH are managed in an attempt to provide a minimal TCP layer throughput degradation for at least some of the plurality of wireless terminals.
    Type: Application
    Filed: September 27, 2002
    Publication date: July 3, 2003
    Inventors: Farid T. Khafizov, Mehmet Yavuz
  • Publication number: 20020085521
    Abstract: A method and apparatus for implementing a supplemental channel in an IS-2000 CDMA network includes a system that determines when to initiate a supplemental channel transmission, when to terminate a supplemental channel transmission, the period or duration of a supplemental channel, and, finally, the data rate of the supplemental channel. In short, an implementation for a supplemental channel is provided that considers the power capacity of the BTS, the desire to minimize interference, the desire to maximize revenue and the number of users, and the desire to minimize the probability of blocking (a user being denied access).
    Type: Application
    Filed: April 16, 2001
    Publication date: July 4, 2002
    Inventors: Nishith D. Tripathi, Farid T. Khafizov, Venkata S. Alapati