Patents by Inventor Yongfeng Cai

Yongfeng 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).

  • Patent number: 8824657
    Abstract: Disclosed are systems and methods for providing ring back tones in a communication network. At first, a ring back tone device for storing and playing the ring back tone customized by a subscriber is established in the communication network. Whether a subscriber is a ring back tone service register subscriber is judged with a certain triggering mode, such as intelligent network triggering, signaling interception triggering, call forwarding triggering or switching device triggering. If it is judged the subscriber is a ring back tone service registered subscriber, a connection between the originating switching device and the terminating switching device and a connection between a switching device and the ring back tone device are established. When the called terminal is idle, the ring back tone device provides a piece of customized ring back tone to the calling subscriber for replacing traditional ring back tone.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: September 2, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuanming Lu, Xiaodong Zhao, Yongfeng Cai
  • Patent number: 8060087
    Abstract: The present invention discloses a CDMA intelligent network system and a method for implementing an international roaming service. The CDMA intelligent network system includes: a Home SCP, a Home Gateway Mobile Switching Center (GMSC) or Home International Switching Center (ISC), and a visited GMSC or visited ISC; further, the CDMA intelligent network system includes a roaming SSP. The SCP is in communication with the roaming SSP, and voice channels are established among the roaming SSP, the Home GMSC or ISC, and the visited GMSC or ISC. The present invention further discloses a roaming Service Switching Point, which is adapted for signaling exchanging with the Home SCP of subscriber in international roaming, so as to establish a service route for the subscriber in international roaming in the CDMA intelligent network.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: November 15, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuanming Lu, Junrong Xu, Jianjun Ding, Yongfeng Cai, Haifeng Xu, Taiyong Dun
  • Patent number: 7889856
    Abstract: Disclosed are systems and methods for providing ring back tones in a communication network. At first, a ring back tone device for storing and playing the ring back tone customized by a subscriber is established in the communication network. Whether a subscriber is a ring back tone service register subscriber is judged with a certain triggering mode, such as intelligent network triggering, signaling interception triggering, call forwarding triggering or switching device triggering. If it is judged the subscriber is a ring back tone service registered subscriber, a connection between the originating switching device and the terminating switching device and a connection between a switching device and the ring back tone device are established. When the called terminal is idle, the ring back tone device provides a piece of customized ring back tone to the calling subscriber for replacing traditional ring back tone.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: February 15, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bin Wang, Yihua Cheng, Xiaoqing Hu, Xiaojun Mo, Jihong Dong, Qian Yu, Xuanming Lu, Xiaodong Zhao, Yongfeng Cai, Junrong Xu, Guodao Yang, Youjun Chen, Zujian Li, Guofan Tong, Shichang Xiao, Yi Zhang, Jiaqing Liu, Yonghong Wu, Shiqian Li
  • Publication number: 20100329442
    Abstract: Disclosed are systems and methods for providing ring back tones in a communication network. At first, a ring back tone device for storing and playing the ring back tone customized by a subscriber is established in the communication network. Whether a subscriber is a ring back tone service register subscriber is judged with a certain triggering mode, such as intelligent network triggering, signaling interception triggering, call forwarding triggering or switching device triggering. If it is judged the subscriber is a ring back tone service registered subscriber, a connection between the originating switching device and the terminating switching device and a connection between a switching device and the ring back tone device are established. When the called terminal is idle, the ring back tone device provides a piece of customized ring back tone to the calling subscriber for replacing traditional ring back tone.
    Type: Application
    Filed: September 8, 2010
    Publication date: December 30, 2010
    Inventors: Xuanming LU, Xiaodong ZHAO, Yongfeng CAI
  • Publication number: 20100020950
    Abstract: A method, a system and a device for realizing hangup notification service are provided. The method includes the following steps: during a conversation between a calling party and a called party, obtaining, by a switch device, hangup notification service information subscribed by a non-hangup user and/or a hangup user after one user party hangs up; connecting to a notification service platform according to the hangup notification service information; and playing, by the notification service platform, user-subscribed notification information for the non-hangup user. A system and a device for realizing notification service are provided in the present invention accordingly. Through the present invention, a user may establish individual profile by subscribing individualized notification information, and it is convenient for the user to set dynamic information for notifying the opposite user party.
    Type: Application
    Filed: September 29, 2009
    Publication date: January 28, 2010
    Applicant: Huawei Technologies Co., LTD.
    Inventors: Yaodong Liu, Yongfeng Cai
  • Publication number: 20090036122
    Abstract: The present invention discloses a CDMA intelligent network system and a method for implementing an international roaming service. The CDMA intelligent network system includes: a Home SCP, a Home Gateway Mobile Switching Center (GMSC) or Home International Switching Center (ISC), and a visited GMSC or visited ISC; further, the CDMA intelligent network system includes a roaming SSP. The SCP is in communication with the roaming SSP, and voice channels are established among the roaming SSP, the Home GMSC or ISC, and the visited GMSC or ISC. The present invention further discloses a roaming Service Switching Point, which is adapted for signaling exchanging with the Home SCP of subscriber in international roaming, so as to establish a service route for the subscriber in international roaming in the CDMA intelligent network.
    Type: Application
    Filed: October 1, 2008
    Publication date: February 5, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xuanming LU, Junrong XU, Jianjun DING, Yongfeng CAI, Haifeng XU, Taiyong DUN
  • Publication number: 20070190972
    Abstract: A method for implementing wireless intelligent services includes: receiving a call and triggering an intelligent service corresponding to the call at a Service Control Point (SCP); receiving a processing result of the intelligent service from the SCP; routing the call to a called party according to the processing result; receiving a call control directive message carrying charging information sent from the SCP; and sending the charging information in the call control directive message to a wireless communication terminal. The present invention makes it possible to implement a centralized management of wireless intelligent services and a centralized charging control by using the intelligent network.
    Type: Application
    Filed: January 31, 2007
    Publication date: August 16, 2007
    Inventor: Yongfeng CAI
  • Publication number: 20060153355
    Abstract: Disclosed are systems and methods for providing ring back tones in a communication network. At first, a ring back tone device for storing and playing the ring back tone customized by a subscriber is established in the communication network. Whether a subscriber is a ring back tone service register subscriber is judged with a certain triggering mode, such as intelligent network triggering, signaling interception triggering, call forwarding triggering or switching device triggering. If it is judged the subscriber is a ring back tone service registered subscriber, a connection between the originating switching device and the terminating switching device and a connection between a switching device and the ring back tone device are established. When the called terminal is idle, the ring back tone device provides a piece of customized ring back tone to the calling subscriber for replacing traditional ring back tone.
    Type: Application
    Filed: November 15, 2005
    Publication date: July 13, 2006
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Bin Wang, Yihua Cheng, Xiaoqing Hu, Xiaojun Mo, Jihong Dong, Qian Yu, Xuanming Lu, Xiaodong Zhao, Yongfeng Cai, Junrong Xu, Guodao Yang, Youjun Chen, Zujian Li, Guofan Tong, Shichang Xiao, Yi Zhang, Jiaqing Liu, Yonghong Wu, Shiqian Li