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).
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Patent number: 8824657Abstract: 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: GrantFiled: September 8, 2010Date of Patent: September 2, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Xuanming Lu, Xiaodong Zhao, Yongfeng Cai
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Patent number: 8060087Abstract: 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: GrantFiled: October 1, 2008Date of Patent: November 15, 2011Assignee: Huawei Technologies Co., Ltd.Inventors: Xuanming Lu, Junrong Xu, Jianjun Ding, Yongfeng Cai, Haifeng Xu, Taiyong Dun
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Patent number: 7889856Abstract: 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: GrantFiled: November 15, 2005Date of Patent: February 15, 2011Assignee: 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
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Publication number: 20100329442Abstract: 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: ApplicationFiled: September 8, 2010Publication date: December 30, 2010Inventors: Xuanming LU, Xiaodong ZHAO, Yongfeng CAI
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Publication number: 20100020950Abstract: 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: ApplicationFiled: September 29, 2009Publication date: January 28, 2010Applicant: Huawei Technologies Co., LTD.Inventors: Yaodong Liu, Yongfeng Cai
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Publication number: 20090036122Abstract: 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: ApplicationFiled: October 1, 2008Publication date: February 5, 2009Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xuanming LU, Junrong XU, Jianjun DING, Yongfeng CAI, Haifeng XU, Taiyong DUN
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Publication number: 20070190972Abstract: 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: ApplicationFiled: January 31, 2007Publication date: August 16, 2007Inventor: Yongfeng CAI
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Publication number: 20060153355Abstract: 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: ApplicationFiled: November 15, 2005Publication date: July 13, 2006Applicant: 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