Patents by Inventor Chenggui Cai

Chenggui Cai 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).

  • Method and apparatus for sending a key on a wireless local area network
    Patent number: 8842830
    Abstract: A method and an apparatus for sending a key on a Wireless Local Area Network (WLAN) is provided. In a scenario where an Access Server is separate from an Access Controller, the Access Controller may send a master key of a specified WLAN station to the AC and trigger the AC to agree with the station on a transient key. The method includes: when receiving the master key of the WLAN station sent from an AAA server, searching a station information table for an IP address of an AC associated with the station; sending a message to the AC to instruct the AC to perform a 4-way handshake with the station to agree on a transient key, where the third message carries the master key of the station, a 4-way handshake triggering bit, and a MAC address of the WLAN station.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: September 23, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Libo Geng, Junli Hu, Peng Zhang, Chenggui Cai
  • METHOD AND APPARATUS FOR SENDING A KEY ON A WIRELESS LOCAL AREA NETWORK
    Publication number: 20120110324
    Abstract: A method and an apparatus for sending a key on a Wireless Local Area Network (WLAN) is provided. In a scenario where an Access Server is separate from an Access Controller, the Access Controller may send a master key of a specified WLAN station to the AC and trigger the AC to agree with the station on a transient key. The method includes: when receiving the master key of the WLAN station sent from an AAA server, searching a station information table for an IP address of an AC associated with the station; sending a message to the AC to instruct the AC to perform a 4-way handshake with the station to agree on a transient key, where the third message carries the master key of the station, a 4-way handshake triggering bit, and a MAC address of the WLAN station.
    Type: Application
    Filed: September 19, 2011
    Publication date: May 3, 2012
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Libo Geng, Junli Hu, Peng Zhang, Chenggui Cai