Patents by Inventor Xiaowu Zhao
Xiaowu Zhao 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: 9060259Abstract: Methods, apparatus and systems for group paging of wireless devices are described. A wireless device is associated with a member identifier (MID) that is a unique identifier for the wireless device. The wireless device is associated with a group identifier (GID) that is a unique identifier for a group of which the wireless device is a member. The wireless device is woken up from a sleep mode at a wake-up time based on the GID.Type: GrantFiled: July 18, 2012Date of Patent: June 16, 2015Assignees: ZTE Corporation, ZTE (USA) Inc.Inventors: Yonggang Fang, Yuanfang Yu, Ting Lu, Xiaowu Zhao
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Patent number: 9030997Abstract: The present invention discloses a method for notifying a load-adjustment factor, including: a base station setting a load-adjustment factor of a sector and notifying a user terminal. The present invention also discloses a method for selecting and determining Data Rate Control (DRC) pointing, including: when selecting a sector which a DRC points towards, a user terminal calculating a difference value by deducting the received load-adjustment factor of the sector sent by a base station, from the measured signal measurement strength of the sector; the user terminal determining whether to point the DRC towards the sector according to the signal measurement strength resulted from the deduction. The present invention also discloses a method for determining sector handover.Type: GrantFiled: September 15, 2010Date of Patent: May 12, 2015Assignee: ZTE CorporationInventors: Yonggang Fang, Ting Lu, Yuanfang Yu, Xiaowu Zhao
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Patent number: 9019875Abstract: The disclosure provides a system, end and method for transmitting 1x messages. The method comprises: when a sending terminal needs to send a plurality of 1x messages to a receiving terminal through a non-1x network, carrying the plurality of 1x messages in one message. With the technical solution of the disclosure, the problem that it is unable to ensure that a plurality of 1x Layer3 messages is transmitted synchronously under the related inter-working situation and the problem of the processing time sequence of messages are solved.Type: GrantFiled: April 22, 2011Date of Patent: April 28, 2015Assignee: ZTE CorporationInventors: Yuanfang Yu, Xiaowu Zhao, Ting Lu, Yonggang Fang
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Patent number: 9008717Abstract: The invention discloses a method for transmitting energy-saving management information. The method includes: a base station and its neighboring base station encapsulating and transmitting the energy-saving management information through an interface message. The invention further discloses a corresponding method for implementing base station energy saving, a system for transmitting the energy-saving management information, and a system for implementing base station energy saving. The invention can be used to solve transmission of the energy-saving information between base station devices of a network, and avoid the problems, for example, handoff and coverage loss caused by the base station being required to be shut off due to reasons such as energy saving, etc., thus guaranteeing network performance and user experience when the base station is performing the energy saving operation.Type: GrantFiled: February 22, 2012Date of Patent: April 14, 2015Assignee: ZTE CorporationInventors: Yuanfang Yu, Yonggang Fang, Ting Lu, Xiaowu Zhao
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Patent number: 8977303Abstract: Techniques, apparatuses, and systems include mechanisms for interworking circuit service fallback. In one implementation, a system for wireless communications can include one or more first base stations forming a first radio access network to provide wireless communications based on a first wireless technology; one or more second base stations forming a second radio access network to provide wireless communications based on a second wireless technology which is different from the first wireless technology, and an interworking service (IWS) module that is configured to provide the interworking between the first and second radio access networks for communications to a wireless device served by the system via either the first wireless technology or the second wireless technology, and uses a signal adaptation protocol to encapsulate messages in communicating with a wireless device served by the system. Other implementations are also provided in this document.Type: GrantFiled: June 16, 2011Date of Patent: March 10, 2015Assignees: ZTE Corporation, ZTE (USA) Inc.Inventors: Yonggang Fang, Rajesh Bhalla, Xiaowu Zhao, Ting Lu, Yuanfang Yu
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Publication number: 20150063297Abstract: Disclosed are an information processing method of a multimode terminal, a multimode terminal and an access network device, wherein, a multimode terminal negotiates with an HRPD access network to determine to close a session keep-alive message initiated by the HRPD access network, the HRPD access network does not transmit a session keep-alive request message to said terminal after said terminal is switched to an LTE network from an HRPD network; and/or after negotiating to determine to close a session keep-alive message initiated by said terminal, said terminal does not transmit a session keep-alive request message to the HRPD network after being switched to the LTE network from the HRPD network. Said terminal acquires a dedicated priority of the HRPD and/or the LTE network from the HRPD access network, and performs network reselection in an idle state according to the dedicated priority when meeting an enabled condition of the dedicated priority.Type: ApplicationFiled: April 1, 2013Publication date: March 5, 2015Inventors: Yuanfang Yu, Ting Lu, Xiaowu Zhao
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Patent number: 8886201Abstract: Techniques, apparatuses, and systems for handling femto-cell hand-in requests can include operating a macro-cell base station to provide wireless service to wireless devices in a geographical coverage area; receiving, from a wireless device, a message indicative of the wireless device's reception of a base station radio signal, the message including a base station identifier; controlling multiple femto-cell base stations that are assigned to the base station identifier to communicate with the wireless device and to report a reception of a radio signal from the wireless device; and transferring the wireless device from the macro-cell base station to a femto-cell base station of the multiple femto-cell base stations that reports a reception of the radio signal from the wireless device. The multiple femto-cell base stations can provide wireless service in different nonadjacent portions of the geographical coverage area.Type: GrantFiled: December 29, 2009Date of Patent: November 11, 2014Assignee: ZTE (USA) Inc.Inventors: Yonggang Fang, Rajesh Bhalla, Wenfeng Zhang, Xiaowu Zhao
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Patent number: 8885533Abstract: Methods, apparatus and systems for enhanced slotted mode operation for wireless communication are disclosed. A first control message indicative of a first sleep cycle duration is received. When the first control message includes a first message field, a second control message that includes a second field indicative of a second sleep cycle duration that is greater than the first sleep cycle duration is transmitted.Type: GrantFiled: July 12, 2012Date of Patent: November 11, 2014Assignees: ZTE Corporation, ZTE (USA) Inc.Inventors: Yonggang Fang, YuanFang Yu, Ting Lu, Xiaowu Zhao
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Patent number: 8781509Abstract: Techniques, apparatuses, and systems can include mechanisms for interworking circuit service fallback.Type: GrantFiled: May 10, 2010Date of Patent: July 15, 2014Assignee: ZTE (USA) Inc.Inventors: Yonggang Fang, Rajesh Bhalla, Xiaowu Zhao
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Patent number: 8724584Abstract: The present invention provides a virtual connection releasing method in an inter-operation network. In the inter-operation network between the Enhanced Universal Terrestrial Radio Access Network (E-UTRAN) and the evolved HRPD (eHRPD) Access Network, a PMIP indication is set for indicating whether the HRPD Serving Gateway HSGW needs to initiate the Proxy Mobile IP (PMIP) binding updating operation or not. When the virtual connection releasing is initiated, the evolved Access Network (eAN) sends the A9-releasing-A8 message, which carries the PMIP indication, to the evolved Packet Control Function (ePCF). After obtaining the PMIP indication through the ePCF, the HRPD Serving Gateway determines whether to initiate the PMIP binding updating operation according to the PMIP indication.Type: GrantFiled: September 24, 2009Date of Patent: May 13, 2014Assignee: ZTE CorporationInventors: Wei Wang, Xiaowu Zhao
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Publication number: 20140092867Abstract: Disclosed are a method and a system for inter-system redirection. The method comprises: a base station sending a first message to a terminal, instructing the terminal to perform redirection; and the terminal accessing the redirected network; wherein the first message carries at least one of the following: a type of wireless access technology, an identifier of whether to redirect, threshold information of redirection, recognition information of the redirected cell, carrier frequency information, return indication of redirection failure, and grouping information of redirection. The present invention solves the problem in the related art of mobile terminal in a HRPD network performing completely autonomous reselection between different systems, thus reducing the network load, lowering network operating costs, and ensuring to the greatest extent the quality of service for users.Type: ApplicationFiled: January 18, 2012Publication date: April 3, 2014Applicant: ZTE CORPORATIONInventors: Yuanfang Yu, Ting Lu, Yonggang Fang, Xiaowu Zhao
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Patent number: 8675621Abstract: Techniques, apparatuses, and systems for using identification sequences in a wireless communication system can include receiving information indicative of a pilot code detected by a wireless device, the pilot code being shared by multiple Femto Access Points (FAPs) that each provide wireless service in at least a portion of the coverage area; receiving information indicative of an identification sequence detected by the wireless device that is associated with the pilot code, using the information indicative of the identification sequence to identify one of the FAPs that share the pilot code; and performing a hand-off of the call to the identified FAP to continue to provide wireless service for the call via the identified FAP.Type: GrantFiled: June 17, 2009Date of Patent: March 18, 2014Assignee: ZTE (USA) Inc.Inventors: Yonggang Fang, Wenfeng Zhang, Rajesh Bhalla, Xiaowu Zhao
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Publication number: 20140018057Abstract: The invention discloses a method for transmitting energy-saving management information. The method includes: a base station and its neighboring base station encapsulating and transmitting the energy-saving management information through an interface message. The invention further discloses a corresponding method for implementing base station energy saving, a system for transmitting the energy-saving management information, and a system for implementing base station energy saving. The invention can be used to solve transmission of the energy-saving information between base station devices of a network, and avoid the problems, for example, handoff and coverage loss caused by the base station being required to be shut off due to reasons such as energy saving, etc., thus guaranteeing network performance and user experience when the base station is performing the energy saving operation.Type: ApplicationFiled: February 22, 2012Publication date: January 16, 2014Applicant: ZTE CORPORATIONInventors: Yuanfang Yu, Yonggang Fang, Ting Lu, Xiaowu Zhao
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Patent number: 8626206Abstract: Apparatuses, techniques, and systems for operating a mobile station with multiple subscriptions includes transmitting a paging message for a subscriber identity of two or more subscriber identities that are associated with a single mobile station over a wireless communication channel based on a paging cycle structure including multiple paging slots. The two or more subscriber identities can include a first subscriber identity and a second, different subscriber identity. Transmitting the paging message can include using, during a paging cycle based on the paging cycle structure, a single paging slot to transmit the paging message, where the single paging slot is associated with the two or more subscriber identities.Type: GrantFiled: September 14, 2012Date of Patent: January 7, 2014Assignee: ZTE (USA) Inc.Inventors: Yonggang Fang, Xiaowu Zhao
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Publication number: 20130307730Abstract: A wireless device performs a transmission on a primary and auxiliary access channels to enable reception by at least three base stations. The base stations perform a measurement on the received transmission, e.g., a time of arrival of the transmission. The base stations report their measurements to a position determination entity. The position determination entity estimates geographic position of the wireless device. One method used by the position determination entity includes tri-lateralization based on the received measurement reports.Type: ApplicationFiled: May 21, 2013Publication date: November 21, 2013Inventors: Yonggang Fang, YuanFang Yu, Ting Lu, Xiaowu Zhao
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Patent number: 8570912Abstract: An accounting method for session release of an ultra mobile broadband access network is provided. In case of the existence of a preferred Proxy Mobile IP tunnel, when a serving Evolved Base Station, which serves the Access Terminal, sends a session release message to decide to release the Ultra Mobile Broadband session, or receives a session release message from a Session Reference Network Controller, the following steps are performed: S402, the serving Evolved Base Station releasing the resources allocated to the Access Terminal, and sending a corresponding accounting request message concerning the wireless resources occupied by the Access Terminal to an Access Gateway serving the Access Terminal; S404, after receiving the accounting request message, the Access Gateway sending an accounting response message to the serving Evolved Base Station to confirm its reception of the accounting request message.Type: GrantFiled: December 25, 2007Date of Patent: October 29, 2013Assignee: ZTE CorporationInventors: Xiaowu Zhao, Wei Wang
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Patent number: 8570944Abstract: Techniques, apparatuses, and systems can include mechanisms for interworking different wireless technologies. Interworking different wireless technologies can include operating a wireless communication system that includes a first wireless network based on a first wireless technology and a second wireless network based on a second wireless technology. Interworking different wireless technologies can include processing a network based change to an Aggregated Maximum Bit Rate (AMBR) parameter that corresponds to an Access Point Name (APN) and communicating the network based change to a wireless device.Type: GrantFiled: May 11, 2010Date of Patent: October 29, 2013Assignee: ZTE (USA) Inc.Inventors: Rajesh Bhalla, Yonggang Fang, Xiaowu Zhao
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Patent number: 8559394Abstract: An active handover method and terminal based on the HRPD system are disclosed by the present invention. The method comprises that: a terminal receives an active handover command, wherein if a virtual connection has existed, the virtual connection is disconnected; and if a virtual connection is being established, the establishment process of the virtual connection is terminated; and High Rate Packet Data air interface connection is established. With the method, processing of the access terminal and the access network is specified, and the problem of long-time interruption in the service of the terminal is solved, processing efficiency of the access terminal and the access network can be improved, thereby improving the processing efficiency of the whole system.Type: GrantFiled: September 15, 2009Date of Patent: October 15, 2013Assignee: ZTE CorporationInventors: Yuanfang Yu, Xiaowu Zhao, Yonggang Fang
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Publication number: 20130267269Abstract: Techniques, devices, and systems that include mechanisms for network assisted fast adjustment of open loop power control mechanism. monitoring reverse link channels include calculating, based on results of the monitoring, an initial power adjustment value for controlling power of a wireless device in communication with the network and broadcasting the initial power adjustment value over a forward link control channel at least as often as a paging channel transmission cycle over the forward link control channel.Type: ApplicationFiled: April 8, 2013Publication date: October 10, 2013Applicants: ZTE CORPORATION, ZTE (USA) INC.Inventors: Yonggang Fang, YuanFang Yu, Ting Lu, Xiaowu Zhao
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Publication number: 20130242734Abstract: Techniques, devices, and systems that include mechanisms for connectionless communications in wireless communication networks or systems include a base station controller, a plurality of base stations and a mobile station. The base station controller combines connectionless transmissions received by the base stations, including decoded and un-decoded frames, into a complete message.Type: ApplicationFiled: May 8, 2013Publication date: September 19, 2013Applicants: ZTE (USA) INC., ZTE CORPORATIONInventors: Yonggang Fang, YuanFang Yu, Ting Lu, Xiaowu Zhao