Patents by Inventor Vincent AnhDzung Nguyen

Vincent AnhDzung Nguyen 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: 8195172
    Abstract: The invention disclosed is a process to allocate channels in a sectorized and tiered cellular network. A system of allocating cellular frequencies (channels) to the sectors among the outer tier of cells within a tile is disclosed which maximizes channel set usage within the tile while minimizing co-channel interference between cells. Any unused, or remaining, frequencies for the outer tier of that cell may then be allocated to an inner tier of the cell that has not had a channel allocated thereto. No additional infrastructure or maintenance set-up is required under this technique for allocating the channel to the additional transceiver and a very high degree of channel utilization is achieved.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 5, 2012
    Assignee: Illinois Institute of Technology
    Inventors: Ophir Frieder, Vincent AnhDzung Nguyen, Peng-Jun Wan
  • Patent number: 8165591
    Abstract: The invention disclosed is a process to allocate channels in a sectorized cellular network. A system of allocating cellular frequencies (channels) to the sectors among the cells within a tile is disclosed which maximizes channel set usage within the tile while avoiding co-channel interference between cells. According to the present system, no infrastructure rebuild is required. The disclosed approach further supports all currently used cellular technology. By alternating and rotating the channel assignments across sectors, what is a seemingly locally poor algorithm utilizing additional local channels is actually a globally good algorithm which is efficient in terms of the total number of channels used owing to short reuse distance and low number of cell types.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: April 24, 2012
    Assignee: Illinois Institute of Technology
    Inventors: Vincent AnhDzung Nguyen, Peng-Jun Wan, Ophir Frieder
  • Publication number: 20040106411
    Abstract: The invention disclosed is a process to allocate channels in a sectorized cellular network. A system of allocating cellular frequencies (channels) to the sectors among the cells within a tile is disclosed which maximizes channel set usage within the tile while avoiding co-channel interference between cells. According to the present system, no infrastructure rebuild is required. The disclosed approach further supports all currently used cellular technology. By alternating and rotating the channel assignments across sectors, what is a seemingly locally poor algorithm utilizing additional local channels is actually a globally good algorithm which is efficient in terms of the total number of channels used owing to short reuse distance and low number of cell types. Frequencies are assigned in an S+X set, where S equals the number of sectors within a cell and X is the number of additional channels needed to complete an alternation scheme that provides sufficient separation between co-channels.
    Type: Application
    Filed: April 3, 2002
    Publication date: June 3, 2004
    Inventors: Vincent AnhDzung Nguyen, Peng-Jun Wan, Ophir Frieder
  • Publication number: 20030190918
    Abstract: The invention disclosed is a process to allocate channels in a sectorized and tiered cellular network. A system of allocating cellular frequencies (channels) to the sectors among the outer tier of cells within a tile is disclosed which maximizes channel set usage within the tile while minimizing co-channel interference between cells. Any unused, or remaining, frequencies for the outer tier of that cell may then be allocated to an inner tier of the cell that has not had a channel allocated thereto. No additional infrastructure or maintenance set-up is required under this technique for allocating the channel to the additional transceiver and a very high degree of channel utilization is achieved.
    Type: Application
    Filed: May 31, 2002
    Publication date: October 9, 2003
    Inventors: Ophir Frieder, Vincent AnhDzung Nguyen, Peng-Jun Wan