Patents by Inventor Kim Phuong Vo

Kim Phuong Vo 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: 6044274
    Abstract: In a cellular mobile telecommunication system, an intelligent network service subscriber can place an originating intelligent network (IN) service call from an area that is not supported by an IN capable mobile switching center. After determining that the call is an IN service call, the non-IN capable mobile switching center will forward the call to a specially configured IN gateway which is programmed to notify the IN subscriber's home location register and service control point. The home location register and service control point then return the appropriate routing instructions to the IN gateway, which in turn forwards the originating IN service call to the intended party.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: March 28, 2000
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Kim Phuong Vo, Vu Nguyen
  • Patent number: 5873042
    Abstract: A system and method of simultaneously paging a mobile station from a plurality of mobile switching centers (MSCs) in a radio telecommunications network without utilizing a home location register is disclosed. The system and method may be utilized to more rapidly locate a mobile station operating in a roamer port region covered by a plurality of MSCs. When a roamer port call is received in a first MSC in which the roamer port is defined, the first MSC begins paging for the mobile station while simultaneously sending a plurality of paging request messages to each of the other MSCs in the roamer port region. The paging request messages include an indication that the call is a roamer port call, and an indication of the Local Access and Transport Area (LATA) in which paging is requested. Each MSC receiving one of the paging request messages immediately begins paging the mobile station in parallel with other receiving MSCs.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: February 16, 1999
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Kim Phuong Vo
  • Patent number: 5724656
    Abstract: In a fixed cellular telephone system, an improved caller interface is provided wherein the taking of a standard wireline telephone set off-hook triggers the establishment of a voice path between the telephone set and the cellular system switch. A dial tone is then applied by the cellular system to the voice path and a caller enters the digits of the telephone number of the party to which the call is directed. The caller dialed digits are transmitted over the voice path to the cellular system switch where they are processed to complete the call connection to the called party. The dialed digits are further analyzed on a one-by-one basis to determine whether improper or unauthorized digits or combinations of digits have been entered by the caller.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: March 3, 1998
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Kim Phuong Vo, Daniel Dufour, H.ang.kan Olsson