Patents by Inventor Weihua Hu
Weihua Hu 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: 8521163Abstract: A method for user detachment when a handover or change occurs in a heterogeneous network is provided. The method includes: a user equipment (UE) is handed over or switched from a source network to a target network; a network element on a network side determines whether to detach the UE from the source network, and if yes, the network element on the network side detaches the UE from the source network. A system and a device for user detachment when a handover or change occurs in a heterogeneous network, and another method for user detachment when a handover or change occurs in a heterogeneous network are also provided.Type: GrantFiled: June 5, 2009Date of Patent: August 27, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Wenfu Wu, Weihua Hu, Shanshan Wang
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Patent number: 8488554Abstract: A method for handover between different types of access systems in some embodiments consistent with the present invention includes: when the UE hands over between different types of access systems, the UE accesses the IASA connected with the UE in the source access system through the destination access system. Furthermore, the present invention discloses a handover system, and a UE that includes an IASA address storing module and an IASA address sending module. The handover system includes: a destination access system, and a source IASA.Type: GrantFiled: April 24, 2009Date of Patent: July 16, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Wenjun Yan, Lina Liu, Weihua Hu, Shanshan Wang
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Patent number: 8457063Abstract: A data processing method when the handover or change appears between systems includes: the source data forwarding network element forwards the data to the user plane anchor network element; the user plane anchor network element forwards the data to the target side processing network element. A data processing method when the handover or change appears between systems is also provided by the present invention, which includes: the user plane anchor network element receives the message indication, transmits the data to at least one of the source data forwarding network element and the target side processing network element; the user plane anchor network element updates the route of the user plane, and transmits the data to the target side processing network element according to the updated route of the user plane.Type: GrantFiled: August 23, 2011Date of Patent: June 4, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Wenfu Wu, Weihua Hu
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Patent number: 8369851Abstract: A mobility management entity (MME) information deleting method includes: receiving a message sent by a first MME; and if needed, determining whether it is necessary to delete information about the first MME according to version information about the first MME. The method further includes: receiving a message sent by a target MME, in which the message carries version information about a source MME acquired by the target MME or an indication of deleting information about the source MME added by the target MME; and deleting the information about the source MME according to the message. A network device for deleting MME information is also provided. According to the present invention, a network device, such as a home subscriber server (HSS), is capable of acquiring version information about a source MME or receiving an indication of deleting information about the source MME, so as to determine whether it is necessary to delete the information about the MME.Type: GrantFiled: August 18, 2011Date of Patent: February 5, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Yanping Zhang, Weihua Hu, Han Zhou, Zhongping Chen
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Patent number: 8359027Abstract: A mobility management entity (MME) information deleting method includes: receiving a message sent by a first MME; and if needed, determining whether it is necessary to delete information about the first MME according to version information about the first MME. The method further includes: receiving a message sent by a target MME, in which the message carries version information about a source MME acquired by the target MME or an indication of deleting information about the source MME added by the target MME; and deleting the information about the source MME according to the message. A network device for deleting MME information is also provided. According to the present invention, a network device, such as a home subscriber server (HSS), is capable of acquiring version information about a source MME or receiving an indication of deleting information about the source MME, so as to determine whether it is necessary to delete the information about the MME.Type: GrantFiled: May 19, 2010Date of Patent: January 22, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Yanping Zhang, Weihua Hu, Han Zhou, Zhongping Chen
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Patent number: 8325675Abstract: A data processing method when the handover or change appears between systems includes the source data forwarding network element forwards the data to the user plane anchor network element; the user plane anchor network element forwards the data to the target side processing network element. A data processing method when the handover or change appears between systems is also provided by the present invention, which includes: the user plane anchor network element receives the message indication, transmits the data to at least one of the source data forwarding network element and the target side processing network element; the user plane anchor network element updates the route of the user plane, and transmits the data to the target side processing network element according to the updated route of the user plane.Type: GrantFiled: February 13, 2009Date of Patent: December 4, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Wenfu Wu, Weihua Hu
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Patent number: 8325682Abstract: A resource release control method, a communication system, and a device are configured to delete a bearer context on an original-side heterogeneous-system management network element (NE) even if a target-side management NE does not support interaction with a serving gateway (S-GW) and does not support an idle mode signaling reduction (ISR) mechanism. The resource release control method includes: acquiring version information of a target-side management NE, when a user equipment (UE) activating an ISR mechanism is handed over from an original-side network to a target-side network; and deleting a bearer of an original-side heterogeneous-system management NE, if the version information indicates that the target-side management NE does not interact with an S-GW and does not support the ISR mechanism. Meanwhile, a communication system and a relevant device are also provided.Type: GrantFiled: May 13, 2010Date of Patent: December 4, 2012Assignee: Huaweie Technologies Co., Ltd.Inventors: Weihua Hu, Yanping Zhang
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Patent number: 8301165Abstract: The invention provides a method, device, and system for obtaining user equipment (UE) location information. The method includes: an interworking entity (IWF) receives UE location information reported by a mobility management entity (MME); the IWF determines trusted UE location information according to the UE location information reported by the MME; and the IWF interacts with a UE or a mobile switching center (MSC) according to the trusted UE location information. With the method, device, and system, it is ensured that the MSC can obtain trusted and accurate UE location information in a circuit switched over packet switched (CSoPS) architecture.Type: GrantFiled: August 1, 2011Date of Patent: October 30, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Weihua Hu, Zhongping Chen, Wenfu Wu
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Patent number: 8271001Abstract: A method for allocating paging areas includes: determining a basic paging area currently visited by a User Equipment (UE); and allocating a paging area to this UE according to a history record of motion trace of UEs located in the basic paging area currently visited by this UE. An apparatus for allocating paging areas is disclosed.Type: GrantFiled: March 28, 2011Date of Patent: September 18, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Yu Yin, Weihua Hu, Qing Zhou
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Publication number: 20120120788Abstract: Described herein is a method for processing an invalidation of a downlink data tunnel between networks. The method includes the following steps: (1) a core network user plane anchor receives an error indication of data tunnel sent from an access network device, (2) after deciding that the user plane corresponding to the error indication uses a One Tunnel technology, the core network user plane anchor notifies a relevant core network control plane to request recovering the downlink data tunnel, (3) the core network control plane recovers the downlink data tunnel and notifies the core network user plane anchor to update information of the user plane. In addition, a communication system and a communication device are also provided. The method, system, and device can improve the speed of recovering data transmission after the downlink data tunnel becomes invalid.Type: ApplicationFiled: January 24, 2012Publication date: May 17, 2012Applicant: Huawei Technologies Co., Ltd.Inventor: Weihua HU
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Publication number: 20120093086Abstract: Receiving a connection establishment request message sent by a user equipment; establishing a signaling connection with the user equipment according to the connection establishment request message; and transmitting a user plane IP data packet through the signaling connection. After a signaling connection is established between a UE in an idle state and a mobility management device, an uplink user plane IP data packet or a downlink user plane IP data packet, is directly transmitted between the UE and the network side through the signaling connection, with no need to specifically establish (recover) an RAB between the UE and an S-GW, which can save the signaling overhead, thus reducing the network load and lowering the operating cost of an operator.Type: ApplicationFiled: December 23, 2011Publication date: April 19, 2012Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yu Yin, Weihua Hu
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Publication number: 20120087345Abstract: A method for handover between different types of access systems in an embodiment of the present invention includes: sending, by a User Equipment (UE), a Mobile Internet Protocol (MIP) registration request to an Inter Access Systems Anchor(IASA) used in a 3rd Generation Partnership Project (3GPP) access system, when the UE hands over from the 3GPP access system to a non-3GPP access system; receiving, by the UE, a MIP registration response from the IASA used in the 3GPP access system; establishing, by the UE, a service data route with the IASA used in the 3GPP access system through the non-3GPP access system The present invention does not require searching for the IASA, HA or VPN GW through a DNS resolution process in the destination access system, and reduces the UE handover time.Type: ApplicationFiled: December 20, 2011Publication date: April 12, 2012Inventors: Wenjun Yan, Lina Liu, Weihua Hu, Shanshan Wang
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Patent number: 8144665Abstract: A resource release control method, a communication system, and a device are configured to delete a bearer context on an original-side heterogeneous-system management network element (NE) even if a target-side management NE does not support interaction with a serving gateway (S-GW) and does not support an idle mode signaling reduction (ISR) mechanism. The resource release control method includes: acquiring version information of a target-side management NE, when a user equipment (UE) activating an ISR mechanism is handed over from an original-side network to a target-side network; and deleting a bearer of an original-side heterogeneous-system management NE, if the version information indicates that the target-side management NE does not interact with an S-GW and does not support the ISR mechanism. Meanwhile, a communication system and a relevant device are also provided.Type: GrantFiled: July 13, 2011Date of Patent: March 27, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Weihua Hu, Yanping Zhang
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Publication number: 20120051291Abstract: A method for information transfer includes: determining, by a source Mobility Management Network Element (MMNE) of a source Access Network (AN), version number of GPRS Tunneling Protocol (GTP) used between the source MMNE and a destination MMNE of a destination AN; and transmitting, by the source MMNE, user information corresponding to the version number of the GTP used between the source MMNE and the destination MMNE to the destination MMNE. The embodiment of the invention also provides a device for information transfer. With the embodiment of present invention, corresponding user information transfer may be realized.Type: ApplicationFiled: November 4, 2011Publication date: March 1, 2012Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Weihua HU, Wenfu WU
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Patent number: 8125889Abstract: Described herein is a method for processing an invalidation of a downlink data tunnel between networks. The method includes the following steps: (1) a core network user plane anchor receives an error indication of data tunnel sent from an access network device, (2) after deciding that the user plane corresponding to the error indication uses a One Tunnel technology, the core network user plane anchor notifies a relevant core network control plane to request recovering the downlink data tunnel, (3) the core network control plane recovers the downlink data tunnel and notifies the core network user plane anchor to update information of the user plane. In addition, a communication system and a communication device are also provided. The method, system, and device can improve the speed of recovering data transmission after the downlink data tunnel becomes invalid.Type: GrantFiled: February 11, 2009Date of Patent: February 28, 2012Assignee: Huawei Technologies Co., Ltd.Inventor: Weihua Hu
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Patent number: 8111666Abstract: A method and a system for idle mode signaling reduction (ISR) are provided. The method includes: obtaining ISR activation information of a source network, and setting an ISR status of an user equipment (UE) in a target network according to the obtained ISR activation information of the source network. Thus, the ISR status of the UE can be processed when the UE is handed over between networks.Type: GrantFiled: November 13, 2009Date of Patent: February 7, 2012Assignee: Huawei Technologies Co., Ltd.Inventor: Weihua Hu
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Publication number: 20110306348Abstract: A data processing method when the handover or change appears between systems includes: the source data forwarding network element forwards the data to the user plane anchor network element; the user plane anchor network element forwards the data to the target side processing network element. A data processing method when the handover or change appears between systems is also provided by the present invention, which includes: the user plane anchor network element receives the message indication, transmits the data to at least one of the source data forwarding network element and the target side processing network element; the user plane anchor network element updates the route of the user plane, and transmits the data to the target side processing network element according to the updated route of the user plane.Type: ApplicationFiled: August 23, 2011Publication date: December 15, 2011Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Wenfu WU, Weihua HU
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Publication number: 20110300861Abstract: A mobility management entity (MME) information deleting method includes: receiving a message sent by a first MME; and if needed, determining whether it is necessary to delete information about the first MME according to version information about the first MME. The method further includes: receiving a message sent by a target MME, in which the message carries version information about a source MME acquired by the target MME or an indication of deleting information about the source MME added by the target MME; and deleting the information about the source MME according to the message. A network device for deleting MME information is also provided. According to the present invention, a network device, such as a home subscriber server (HSS), is capable of acquiring version information about a source MME or receiving an indication of deleting information about the source MME, so as to determine whether it is necessary to delete the information about the MME.Type: ApplicationFiled: August 18, 2011Publication date: December 8, 2011Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yanping ZHANG, Weihua HU, Han ZHOU, Zhongping CHEN
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Publication number: 20110287785Abstract: The invention provides a method, device, and system for obtaining user equipment (UE) location information. The method includes: an interworking entity (IWF) receives UE location information reported by a mobility management entity (MME); the IWF determines trusted UE location information according to the UE location information reported by the MME; and the IWF interacts with a UE or a mobile switching center (MSC) according to the trusted UE location information. With the method, device, and system, it is ensured that the MSC can obtain trusted and accurate UE location information in a circuit switched over packet switched (CSoPS) architecture.Type: ApplicationFiled: August 1, 2011Publication date: November 24, 2011Inventors: Weihua HU, Zhongping Chen, Wenfu Wu
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Patent number: 8059679Abstract: A method for information transfer includes: determining, by a source Mobility Management Network Element (MMNE) of a source Access Network (AN), version number of GPRS Tunneling Protocol (GTP) used between the source MMNE and a destination MMNE of a destination AN; and transmitting, by the source MMNE, user information corresponding to the version number of the GTP used between the source MMNE and the destination MMNE to the destination MMNE. The embodiment of the invention also provides a device for information transfer. With the embodiment of present invention, corresponding user information transfer may be realized.Type: GrantFiled: February 12, 2010Date of Patent: November 15, 2011Assignee: Huawei Technologies Co., Ltd.Inventors: Weihua Hu, Wenfu Wu