Patents by Inventor Kamyar Moinzadeh

Kamyar Moinzadeh 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: 6629261
    Abstract: A method of recovering lost frames transmitted between a packet data sending unit and a packet data receiving unit in a data communications system is disclosed. When a frame is successfully received by the packet data receiving unit, it identifies a failure to successfully receive prior frames, i.e., at least one frame prior to the frame successfully received at the packet data receiving unit. The packet data receiving unit starts a selective reject wait timer and determines whether the number of frames missed so far is greater than or equal to a predetermined threshold. If the number of missed frames is greater than or equal to the preset limit, the packet data receiving unit generates a selective reject message that includes a payload indicating a first missed frame and subsequent missed frames.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: September 30, 2003
    Assignee: AT&T Wireless Services, Inc.
    Inventors: Lakshmana Rao Chintada, Liang A. Hong, Kamyar Moinzadeh, Donald P. Wahlstrom
  • Publication number: 20030115345
    Abstract: One method described includes the steps of monitoring, at a wireless transceiver unit, communications involving address assignment between a dynamic host configuration protocol (DHCP) server and one or more computer devices; storing, at the wireless transceiver unit, at least one computer device identifier corresponding to at least one computer device that was assigned an address by the DHCP server; receiving, at the wireless transceiver unit, traffic from a first computer device of the one or more computer devices; identifying, at the wireless transceiver using the at least one computer device identifier, that the first computer device is one that was assigned an address by the DHCP server; transmitting, from the wireless transceiver unit over a wireless communication link, traffic from the first computer device based on identifying that it was assigned an address by the DHCP server; receiving, at the wireless transceiver unit, traffic from a second computer device of the one or more computer devices; failin
    Type: Application
    Filed: April 11, 2002
    Publication date: June 19, 2003
    Inventors: Herman Chien, Kevin Fung, Liang A. Hong, Ileana A. Leuca, Kamyar Moinzadeh, Keith C. Nichols, Wen-Ping Ying
  • Publication number: 20020165972
    Abstract: One method described includes the steps of monitoring, at a wireless transceiver unit, communications involving address assignment between a dynamic host configuration protocol (DHCP) server and one or more computer devices; storing, at the wireless transceiver unit, at least one computer device identifier corresponding to at least one computer device that was assigned an address by the DHCP server; receiving, at the wireless transceiver unit, traffic from a first computer device of the one or more computer devices; identifying, at the wireless transceiver using the at least one computer device identifier, that the first computer device is one that was assigned an address by the DHCP server; transmitting, from the wireless transceiver unit over a wireless communication link, traffic from the first computer device based on identifying that it was assigned an address by the DHCP server; receiving, at the wireless transceiver unit, traffic from a second computer device of the one or more computer devices; failin
    Type: Application
    Filed: April 11, 2002
    Publication date: November 7, 2002
    Inventors: Herman Chien, Kevin Fung, Liang A. Hong, Ileana A. Leuca, Kamyar Moinzadeh, Keith C. Nichols, Wen-Ping Ying
  • Publication number: 20020118667
    Abstract: In a wireless communications system, a data link layer and a medium access control layer are connected to each other by data and control paths, where the data path is operable to exchange frames between the data link layer and the medium access control layer and the control path is operable to exchange control messages between the data link layer and the medium access control layer. The data link layer includes a queue for storing frames received from the medium access control layer and the medium access control layer includes a queue for storing frames received from the data link layer. The data link layer is adapted to pass new data frames from a higher layer relative to the data link layer into the data link layer queue and to suspend a retransmission timer upon a congestion message received from the medium access control layer, the congestion message being responsive to a level of stored frames in the medium access control queue.
    Type: Application
    Filed: December 21, 2000
    Publication date: August 29, 2002
    Inventors: Lakshmana Rao Chintada, Liang A. Hong, Kamyar Moinzadeh, Donald P. Wahlstrom
  • Publication number: 20020118639
    Abstract: A method of dynamically controlling congestion in a wireless communication system. The method generally comprises the steps of: (a) the medium access control layer detecting congestion; (b) the medium access control layer communicating a control message with the data link control layer indicating a congested state; (c) in the congested state, the data link layer placing frames received from a higher layer into a data link layer queue and suspending frame transmission to the medium access control layer; and (d) upon receipt of a control message indicating an uncongested state, the data link control layer sending frames to the medium access control layer.
    Type: Application
    Filed: December 21, 2000
    Publication date: August 29, 2002
    Inventors: Lakshmana Rao Chintada, Liang A. Hong, Kamyar Moinzadeh, Donald P. Wahlstrom