Patents by Inventor Xianqi Zhai

Xianqi Zhai 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).

  • Data transmission method, system, and apparatus
    Patent number: 9350711
    Abstract: A data transmission method is applied in a virtual private network (VPN) and includes: querying, by an initiating client, a VPN server for external network Internet Protocol (IP) addresses of the initiating client and a responding client; performing, by the initiating client, key negotiation with the responding client through the VPN server; after the key negotiation is completed, writing, by the initiating client, the external network IP address of the initiating client into a source address field of a to-be-sent User Datagram Protocol (UDP) packet, writing the external network IP address of the responding client into a destination address field of the to-be-sent UDP packet, and encrypting the to-be-sent UDP packet according to a key obtained through the negotiation; and sending, by the initiating client, an encrypted UDP packet to the responding client, and performing packet interaction with the responding client directly.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: May 24, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xianqi Zhai, Guoyao Hua, Aiping Chen, Yao Gui
  • Data Transmission Method, System, and Apparatus
    Publication number: 20140337967
    Abstract: A data transmission method is applied in a virtual private network (VPN) and includes: querying, by an initiating client, a VPN server for external network Internet Protocol (IP) addresses of the initiating client and a responding client; performing, by the initiating client, key negotiation with the responding client through the VPN server; after the key negotiation is completed, writing, by the initiating client, the external network IP address of the initiating client into a source address field of a to-be-sent User Datagram Protocol (UDP) packet, writing the external network IP address of the responding client into a destination address field of the to-be-sent UDP packet, and encrypting the to-be-sent UDP packet according to a key obtained through the negotiation; and sending, by the initiating client, an encrypted UDP packet to the responding client, and performing packet interaction with the responding client directly.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 13, 2014
    Inventors: Xianqi Zhai, Guoyao Hua, Aiping Chen, Yao Gui