Patents by Inventor Hoi-Sheung Wilson So

Hoi-Sheung Wilson So 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: 8218600
    Abstract: A system and method for operating a communications system network, the method including operating an access point (AP) acting as a network controller in a frequency hopping network, the AP communicating with other communication devices of the network over m number of frequencies using a hopping sequence of at least some of the m number of frequencies and a dwell time d for the plurality of frequencies; and operating a communication device seeking to establish synchronized communication with other communication devices of the frequency hopping network without any cross-AP coordination, the communication device scanning all of the m number of frequencies using a scanning time s for each of the m number of frequencies; and, wherein the scanning time s is no greater than 1/m of the AP dwell time d.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: July 10, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hoi-Sheung Wilson So, Raghuveer Chereddy, Raymond Rui-Feng Liao
  • Patent number: 8149893
    Abstract: A method and system, the method including determining a frequency quality measurement value for each of a plurality of frequencies a network coordinator can use in a frequency hopping sequence for communicating with a client, classifying each of the plurality of communication frequencies into one of a plurality of different categories based on a relative ranking of the determined frequency quality measurement value of each of the plurality of frequencies, generating, by the network coordinator, a frequency hopping sequence to be used for communication between the network coordinator and the client, the generated hopping sequence including only select frequencies from the plurality of frequencies in a predetermined number of future time slots that minimize a probability of a predetermined number of consecutive frequency hop failures in the predetermined number of future time slots, and notifying the client of the generated frequency hopping sequence to be used for communication.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: April 3, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hoi-Sheung Wilson So, Raghuveer Chereddy, Raymond Rui-Feng Liao
  • Publication number: 20100046583
    Abstract: A method and system, the method including determining a frequency quality measurement value for each of a plurality of frequencies a network coordinator can use in a frequency hopping sequence for communicating with a client, classifying each of the plurality of communication frequencies into one of a plurality of different categories based on a relative ranking of the determined frequency quality measurement value of each of the plurality of frequencies, generating, by the network coordinator, a frequency hopping sequence to be used for communication between the network coordinator and the client, the generated hopping sequence including only select frequencies from the plurality of frequencies in a predetermined number of future time slots that minimize a probability of a predetermined number of consecutive frequency hop failures in the predetermined number of future time slots, and notifying the client of the generated frequency hopping sequence to be used for communication.
    Type: Application
    Filed: December 18, 2008
    Publication date: February 25, 2010
    Inventors: Hoi-Sheung Wilson So, Raghuveer Chereddy, Raymond Rui-Feng Liao
  • Publication number: 20100046585
    Abstract: A system and method for operating a communications system network, the method including operating an access point (AP) acting as a network controller in a frequency hopping network, the AP communicating with other communication devices of the network over m number of frequencies using a hopping sequence of at least some of the m number of frequencies and a dwell time d for the plurality of frequencies; and operating a communication device seeking to establish synchronized communication with other communication devices of the frequency hopping network without any cross-AP coordination, the communication device scanning all of the m number of frequencies using a scanning time s for each of the m number of frequencies; and, wherein the scanning time s is no greater than 1/m of the AP dwell time d.
    Type: Application
    Filed: December 18, 2008
    Publication date: February 25, 2010
    Inventors: Hoi-Sheung Wilson So, Raghuveer Chereddy, Raymond Rui-Feng Liao