Patents by Inventor Derek Hongwei Bao

Derek Hongwei Bao 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: 8219100
    Abstract: A femto cell at a customer premises, such as an IP-based femto Base Transceiver System (IP-BTS), can be configured as a “private access” node intended to service a limited set of mobile stations. However, mobile stations not associated with the private femto cell may acquire and lock onto the femto BTS. To avoid service blockages in such cases, the private femto BTS will allow call access attempts by, and call deliveries to, a non-associated mobile station, despite the “private access” configuration. However, upon completion of call set-up, the non-associated mobile station is directed to initiate handoff, from the private femto cell coverage provided by the femto BTS into a cell coverage of a base station of the macro network, to conserve femto cell resources for use in servicing calls of the associated mobile station(s).
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: July 10, 2012
    Assignee: Cellco Partnership
    Inventors: Derek Hongwei Bao, David Chiang
  • Publication number: 20120108234
    Abstract: Femto cells that extend mobile network coverage into customer premises operate in a frequency band typically assigned to a macro network. To facilitate system discovery and registrations of mobile stations with femto cells, a carrier designates one the channels within the band as a primary channel for its femto cells. For example, neighbor list messages transmitted by macro network base stations can provide frequency and PN code information directing mobile stations to search the primary channel for a PN code of the femto cells. The mobile station preferred roaming list (PRL) may identify femto cells by SID/NID. The SID is that of the carrier's macro network, whereas the NID may be a NID of the macro network or one specifically assigned to femto cell operations. The PRL uses frequency acquisition information for the femto cells that is the same as or similar to that for one of the macro networks.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Applicant: Cellco Partnership d/b/a Verizon Wireless
    Inventors: Derek Hongwei Bao, David Chiang
  • Patent number: 8121089
    Abstract: Femto cells that extend mobile network coverage into customer premises operate in a frequency band typically assigned to a macro network. As disclosed, to facilitate system discovery and registrations of mobile stations with femto cells, a carrier designates one the channels within the band as a primary channel for its femto cells. For example, neighbor list messages transmitted by macro network base stations can provide frequency and PN code information directing mobile stations to search the primary channel for a PN code of the femto cells. Also, a mobile station PRL may identify femto cells by SID/NID. The SID is that of the carrier's macro network, whereas the NID may be a NID of the macro network or one specifically assigned to femto cell operations. The PRL uses frequency acquisition information for the femto cells that is the same as or similar to that for one of the macro networks.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: February 21, 2012
    Assignee: Cellco Partnership
    Inventors: Derek Hongwei Bao, David Chiang
  • Publication number: 20110188456
    Abstract: A system provides push-to-talk (PTT) or similar communication service via a radio access network providing wireless mobile packet data communications for mobile stations. A server distributes packets of digitized audio received from a broadcasting mobile station to one or more client devices of other parties. The called client device(s), however, may not all have the same communications capabilities as the broadcasting mobile station. Signaling procedures are adapted to inform the broadcasting station of the capabilities of the other client device(s). This enables the broadcasting mobile station to configure its transmissions of digitized audio through the network for compatibility with the capabilities of the other client device(s). Proper configuration avoids loss of data at the destination, particularly at the start of a PTT transmission, due to transmission in a form or configuration that may be incompatible with one or more of the receiving stations.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Applicant: Cellco Partnership d/b/a Verizon Wireless
    Inventors: Vikram Kumar RAWAT, Derek Hongwei Bao
  • Publication number: 20110149782
    Abstract: Infrastructure network service measurements of time needed to complete data transfers are used to determine the capacity of a technology sector of a wireless packet data communication base station, such as a 1xEV-DO sector, using infrastructure network service measurements. The process, for example, may predict when the radio-frequency link between wireless data subscribers and a wireless base station becomes sufficiently congested that each user experiences reduced data speeds. The determination of capacity can be made down to the sector-carrier (a single carrier within a base station sector) level. The prediction can be cast in terms of time, which allows network service providers to plan the growth of their base stations to meet subscriber needs.
    Type: Application
    Filed: February 25, 2011
    Publication date: June 23, 2011
    Applicant: Cellco Partnership d/b/a Verizon Wireless
    Inventors: Scott Anthony TOWNLEY, Derek Hongwei Bao
  • Patent number: 7944896
    Abstract: A system provides push-to-talk (PTT) or similar communication service via a radio access network providing wireless mobile packet data communications for mobile stations. A server distributes packets of digitized audio received from a broadcasting mobile station to one or more client devices of other parties. The called client device(s), however, may not all have the same communications capabilities as the broadcasting mobile station. Signaling procedures are adapted to inform the broadcasting station of the capabilities of the other client device(s). This enables the broadcasting mobile station to configure its transmissions of digitized audio through the network for compatibility with the capabilities of the other client device(s). Proper configuration avoids loss of data at the destination, particularly at the start of a PTT transmission, due to transmission in a form or configuration that may be incompatible with one or more of the receiving stations.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: May 17, 2011
    Assignee: Cellco Partnership
    Inventors: Vikram Kumar Rawat, Derek Hongwei Bao
  • Patent number: 7933557
    Abstract: Infrastructure network service measurements of time needed to complete data transfers are used to determine the capacity of a technology sector of a wireless packet data communication base station, such as a 1xEV-DO sector, using infrastructure network service measurements. The process, for example, may predict when the radio-frequency link between wireless data subscribers and a wireless base station becomes sufficiently congested that each user experiences reduced data speeds. The determination of capacity can be made down to the sector-carrier (a single carrier within a base station sector) level. The prediction can be cast in terms of time, which allows network service providers to plan the growth of their base stations to meet subscriber needs.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: April 26, 2011
    Assignee: Cellco Partnership
    Inventors: Scott Anthony Townley, Derek Hongwei Bao
  • Publication number: 20100297995
    Abstract: A device searches for a primary access network, and acquires the primary access network. The device also requests a service provided by a network connected to the primary access network, and attaches to the primary access network only when the service is requested by the device.
    Type: Application
    Filed: May 22, 2009
    Publication date: November 25, 2010
    Applicant: VERIZON PATENT AND LICENSING INC.
    Inventors: John F. MACIAS, Patricia CHANG, Maria G. LAM, Scott Anthony TOWNLEY, Derek Hongwei BAO, Phillip Andrew RITTER
  • Publication number: 20090061873
    Abstract: A femto cell at a customer premises, such as an IP-based femto Base Transceiver System (IP-BTS), can be configured as a “private access” node intended to service a limited set of mobile stations. However, mobile stations not associated with the private femto cell may acquire and lock onto the femto BTS. To avoid service blockages in such cases, the private femto BTS will allow call access attempts by, and call deliveries to, a non-associated mobile station, despite the “private access” configuration. However, upon completion of call set-up, the non-associated mobile station is directed to initiate handoff, from the private femto cell coverage provided by the femto BTS into a cell coverage of a base station of the macro network, to conserve femto cell resources for use in servicing calls of the associated mobile station(s).
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: Derek Hongwei Bao, David Chiang
  • Publication number: 20090052395
    Abstract: Femto cells that extend mobile network coverage into customer premises operate in a frequency band typically assigned to a macro network. As disclosed, to facilitate system discovery and registrations of mobile stations with femto cells, a carrier designates one the channels within the band as a primary channel for its femto cells. For example, neighbor list messages transmitted by macro network base stations can provide frequency and PN code information directing mobile stations to search the primary channel for a PN code of the femto cells. Also, a mobile station PRL may identify femto cells by SID/NID. The SID is that of the carrier's macro network, whereas the NID may be a NID of the macro network or one specifically assigned to femto cell operations. The PRL uses frequency acquisition information for the femto cells that is the same as or similar to that for one of the macro networks.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventors: Derek Hongwei Bao, David Chiang
  • Patent number: 7260087
    Abstract: Voice over data-packet protocol, for example voice over Internet Protocol (VoIP), type communications in a network providing wireless packet data service are optimized by implementation of a mobile station initiated negotiation of radio protocol parameters adapted specifically to support the voice over data-packet application. Call set-up signaling for such a call utilizes a set of parameters for radio communication defined for a normal packet data service, for example, with packet retransmission between the base station and the mobile station. The mobile station recognizes the VoIP communication. When VoIP call set-up signaling over the robust link is complete, the mobile station sends a request to the radio network to modify one or more of the radio parameters, for example, to turn-OFF the packet retransmission; to facilitate the actual communication of VoIP packets.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: August 21, 2007
    Assignee: Cellco Partnership
    Inventors: Derek Hongwei Bao, Vikram Rawat
  • Patent number: 6996374
    Abstract: Infrastructure network service measurements are used to determine sector capacity, or the like, in a wireless network. The embodiments use a linear regression to predict current usage and/or capacity of the radio-frequency link resources between wireless subscribers and wireless base stations, for example, as an indication of when the link is incapable of supporting additional subscribers. The determination of resource capacity can be refined down to the sector-carrier level (a single carrier within a base station sector). The prediction can be cast in terms of time, which allows network service providers to plan the growth of their base stations to meet subscriber needs. Metrics derived from the regression, such as line slope, also provide useful information about usage and performance.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: February 7, 2006
    Assignee: Cellco Partnership
    Inventors: Derek Hongwei Bao, Scott Anthony Townley
  • Publication number: 20040196826
    Abstract: Voice over data-packet protocol, for example voice over Internet Protocol (VoIP), type communications in a network providing wireless packet data service are optimized by implementation of a mobile station initiated negotiation of radio protocol parameters adapted specifically to support the voice over data-packet application. Call set-up signaling for such a call utilizes a set of parameters for radio communication defined for a normal packet data service, for example, with packet retransmission between the base station and the mobile station. The mobile station recognizes the VoIP communication. When VoIP call set-up signaling over the robust link is complete, the mobile station sends a request to the radio network to modify one or more of the radio parameters, for example, to turn-OFF the packet retransmission; to facilitate the actual communication of VoIP packets.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 7, 2004
    Applicant: CELLCO PARTNERSHIP as VERIZON WIRELESS
    Inventors: Derek Hongwei Bao, Vikram Rawat