Patents by Inventor Xiangzhong Zeng

Xiangzhong Zeng 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: 7554913
    Abstract: Allocating resources in a circuit switched data network, comprising receiving a request for a resource from a device coupled to the circuit switched data network and granting the resource to the requesting device if the resource is available. If the resource is not available, then examining the instantaneous quantity of data to be transmitted by the requesting device; the rate of change in the instantaneous quantity of data to be transmitted by the requesting device; and the time of utilization of the resource by the requesting device, and granting the resource to the requesting device based on the examination of the three factors.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: June 30, 2009
    Inventors: Vivek Gupta, Sumit Sanyal, Xiangzhong Zeng, Stephen J. Sifferman, Leah J. Fera, Christopher R. Uhlik
  • Publication number: 20050169178
    Abstract: Allocating resources in a circuit switched data network, comprising receiving a request for a resource from a device coupled to the circuit switched data network and granting the resource to the requesting device if the resource is available. If the resource is not available, then examining the instantaneous quantity of data to be transmitted by the requesting device; the rate of change in the instantaneous quantity of data to be transmitted by the requesting device; and the time of utilization of the resource by the requesting device, and granting the resource to the requesting device based on the examination of the three factors.
    Type: Application
    Filed: March 25, 2005
    Publication date: August 4, 2005
    Inventors: Vivek Gupta, Sumit Sanyal, Xiangzhong Zeng, Stephen Sifferman, Leah Fera, Christopher Uhlik
  • Patent number: 6894993
    Abstract: Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: May 17, 2005
    Assignee: ArrayComm, Inc.
    Inventors: Xiaoming Yu, Athanasios A. Kasapi, Lars Johan Persson, Xiangzhong Zeng
  • Patent number: 6888795
    Abstract: Allocating resources in a circuit switched data network, comprising receiving a request for a resource from a device coupled to the circuit switched data network and granting the resource to the requesting device if the resource is available. If the resource is not available, then examining the instantaneous quantity of data to be transmitted by the requesting device; the rate of change in the instantaneous quantity of data to be transmitted by the requesting device; and the time of utilization of the resource by the requesting device, and granting the resource to the requesting device based on the examination of the three factors.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: May 3, 2005
    Assignee: Durham Logistics LLC
    Inventors: Vivek Gupta, Sumit Sanyal, Xiangzhong Zeng, Stephen J. Sifferman, Leah J. Fera, Christopher R. Uhlik
  • Publication number: 20040125767
    Abstract: Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Inventors: Xiaoming Yu, Athanasios A. Kasapi, Lars Johan Persson, Xiangzhong Zeng
  • Publication number: 20020114287
    Abstract: Allocating resources in a circuit switched data network, comprising receiving a request for a resource from a device coupled to the circuit switched data network and granting the resource to the requesting device if the resource is available. If the resource is not available, then examining the instantaneous quantity of data to be transmitted by the requesting device; the rate of change in the instantaneous quantity of data to be transmitted by the requesting device; and the time of utilization of the resource by the requesting device, and granting the resource to the requesting device based on the examination of the three factors.
    Type: Application
    Filed: April 25, 2002
    Publication date: August 22, 2002
    Inventors: Vivek Gupta, Sumit Sanyal, Xiangzhong Zeng, Stephen J. Sifferman, Leah J. Fera, Christopher R. Uhlik