Patents by Inventor Duncan Ho

Duncan Ho 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: 8126469
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: February 28, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Jr., Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Patent number: 7986674
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: July 26, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Jr., Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Patent number: 7894403
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: February 22, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Jr., Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Patent number: 7688786
    Abstract: Techniques for avoiding data loss and reducing registration overhead in a wireless packet data communication system are disclosed. In one embodiment, a mobile station adds each connection to a connection list following registration with the PCF. The mobile station need not reregister a connection included in the connection list when it again enters the PCF's coverage area. In another embodiment, a PDSN maintains a connection table, with one or more connections for each mobile station. The PDSN transmits data to the mobile station along one of the connections. In yet another embodiment, a PDSN transmits on an active connection, if one exists. In yet another embodiment, connections in a connection list or connection table are removed when a corresponding inactivity timer expires. Various other embodiments are also presented.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: March 30, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Nischal Abrol, Duncan Ho
  • Patent number: 7417976
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: August 26, 2008
    Assignee: Qualcomm Incorporated
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Jr., Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20070091854
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: November 30, 2006
    Publication date: April 26, 2007
    Applicant: QUALCOMM, INC.
    Inventors: Ragulan Sinnarajah, Edward Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20070086392
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: November 30, 2006
    Publication date: April 19, 2007
    Applicant: QUALCOMM, INC.
    Inventors: Ragulan Sinnarajah, Edward Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20070086390
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: November 30, 2006
    Publication date: April 19, 2007
    Applicant: QUALCOMM, INC.
    Inventors: Ragulan Sinnarajah, Edward Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20070086393
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: November 30, 2006
    Publication date: April 19, 2007
    Applicant: QUALCOMM, INC.
    Inventors: Ragulan Sinnarajah, Edward Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20070086391
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: November 30, 2006
    Publication date: April 19, 2007
    Applicant: QUALCOMM, INC.
    Inventors: Ragulan Sinnarajah, Edward Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Patent number: 7180879
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: February 20, 2007
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Jr., Ramin Rezaiifar, Jun Wang, Duncan Ho
  • Publication number: 20040184436
    Abstract: Techniques for avoiding data loss and reducing registration overhead in a wireless packet data communication system are disclosed. In one embodiment, a mobile station adds each connection to a connection list following registration with the PCF. The mobile station need not reregister a connection included in the connection list when it again enters the PCF's coverage area. In another embodiment, a PDSN maintains a connection table, with one or more connections for each mobile station. The PDSN transmits data to the mobile station along one of the connections. In yet another embodiment, a PDSN transmits on an active connection, if one exists. In yet another embodiment, connections in a connection list or connection table are removed when a corresponding inactivity timer expires. Various other embodiments are also presented.
    Type: Application
    Filed: September 17, 2003
    Publication date: September 23, 2004
    Inventors: Nischal Abrol, Duncan Ho
  • Publication number: 20030035393
    Abstract: Techniques for minimizing call setup latency are disclosed. In one aspect, a channel assignment message is sent with a flag to direct the use of previously negotiated service parameters. This aspect eliminates the need for service negotiation messages. In another aspect, a channel assignment message is sent with an active set identifier instead of an active set and its parameters. This aspect reduces the transmission time of the channel assignment message. In yet another aspect, call setup without paging is facilitated by a mobile station (106) sending a pilot strength measurement message between active communication sessions, such that a channel assignment message can be used for mobile station terminated call setup without the need for mobile station paging and related messages.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 20, 2003
    Inventors: Ragulan Sinnarajah, Edward G. Tiedemann, Ramin Rezaiifar, Jun Wang, Duncan Ho