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).

  • Publication number: 20110199942
    Abstract: The present invention discloses a method and system for providing an emergency calling service for a high speed packet data network based on the CDMA technology. An access network transmits an emergency calling indication carried in an emergency calling message which is initiated by an access terminal to a packet data service node such that the emergency calling service can be implemented under the support of the packet data serving node.
    Type: Application
    Filed: September 24, 2009
    Publication date: August 18, 2011
    Applicant: ZTE CORPORATION
    Inventors: Xiaowu Zhao, Kexue Lu
  • Patent number: 7983224
    Abstract: The present invention discloses a method for delivering paging from 1X network in HRPD (High Rate Packet Data) network, and the Secondary Color Code scheme is applied in the present invention, which enables the AN in which a MS/AT is registered to send an A13-paging request message to other adjacent ANs which are together therewith used for paging a mobile phone. For a MS/AT at multiple AN boundary, with the present invention, it enhances the possibility of receiving the paging through HRPD air interface control channel due to the service originated from 1X network, and can ensure the double network operation ability.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: July 19, 2011
    Assignee: ZTE Corporation
    Inventor: Xiaowu Zhao
  • Publication number: 20110164619
    Abstract: A method and system for supporting emergency service over a High Rate Packet Data (HRPD) Access Network (AN) and a Packet Control Function (PCF) entity. The method comprises the following steps: an AN function entity sends information indicating whether a user is using an emergent service to a PCF entity (S302); the PCF entity forwards the information indicating whether the user is utilizing an emergency service to a PDSN(S304). By the present invention, the problem that emergency services can not recognized by the PCF and the PDSN in current HRPD AN may be solved, thus the support of emergency services by HRPD AN can be realized.
    Type: Application
    Filed: March 6, 2009
    Publication date: July 7, 2011
    Applicant: ZTE CORPORATION
    Inventors: Wei Wang, Xiaowu Zhao
  • Publication number: 20110085497
    Abstract: Techniques, devices, and systems that include mechanisms for connectionless communications in wireless communication networks or systems.
    Type: Application
    Filed: September 1, 2010
    Publication date: April 14, 2011
    Applicant: ZTE (USA) Inc.
    Inventors: Yonggang Fang, Xiaowu Zhao, Ting Lu, YuanFang Yu
  • Publication number: 20110080870
    Abstract: 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: Application
    Filed: May 11, 2010
    Publication date: April 7, 2011
    Inventors: Rajesh BHALLA, Yonggang FANG, Xiaowu ZHAO
  • Publication number: 20100317378
    Abstract: Techniques, apparatuses, and systems can include mechanisms for interworking circuit service fallback.
    Type: Application
    Filed: May 10, 2010
    Publication date: December 16, 2010
    Inventors: Yonggang Fang, Rajesh Bhalla, Xiaowu Zhao
  • Publication number: 20100309862
    Abstract: Techniques, apparatuses, and systems are described for wireless communications. In one implement, wireless communication systems can provide one or more mechanisms to reduce reverse overhead control signaling by adaptively transmitting overhead control information.
    Type: Application
    Filed: May 10, 2010
    Publication date: December 9, 2010
    Inventors: Yonggang Fang, Xiaowu Zhao, Ting Lu, Rajesh Bhalla
  • Publication number: 20100257589
    Abstract: The invention discloses a method for releasing a high rate packet data (HRPD) session, including the following steps: S302, in the case that the access network (AN) determines to reauthenticate the access terminal (AT), it authenticates the AT via the established connection with the AT; S304, in the case that the reauthentication of the AT is not passed, the AN or the AT initiates the release of the HRPD session; S306, the AN closes the HRPD session with the AT, and sends to the packet control function (PCF) entity a first releasing message indicating of releasing the resource and the connection and starts a first timer; S308, the PCF eneity sends to the packet data service node (PDSN) a second releasing message indicating of releasing the connection and starts a second timer; S310, the PDSN releases the connection and feeds back a second release response message to the PCF entity, and the PCF entity stops the second timer upon receiving the second release response message; S312, the PCF entity sends a first
    Type: Application
    Filed: December 11, 2007
    Publication date: October 7, 2010
    Inventor: Xiaowu Zhao
  • Publication number: 20100232377
    Abstract: A packet data session release method for ultra mobile broadband access network is disclosed, and which includes: S402, when releasing the packet data session, an access gateway sends a proxy mobile IP registration revocation message to the data attachment point of the ultra mobile broadband access network and the evolved base station which has one reverse proxy mobile IP tunnel to the access gateway, respectively; S404, after receiving the proxy mobile IP registration revocation message, the data attachment point and the evolved base station which has one reverse proxy mobile IP tunnel to the access gateway, delete their proxy mobile IP tunnels between them and the access gateway, respectively, and send a proxy mobile IP revocation ACK message to the access gateway, respectively, so as to confirm the reception of the registration request messages; and S406, the data attachment point notifies the session reference network controller that the packet data session has been released, via sending a IP tunnel notifi
    Type: Application
    Filed: March 26, 2008
    Publication date: September 16, 2010
    Applicant: ZTE CORPORATION
    Inventors: Xiaowu Zhao, Kexue Lu, Yuanfang Yu
  • Publication number: 20100215003
    Abstract: 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: Application
    Filed: December 25, 2007
    Publication date: August 26, 2010
    Applicant: ZTE CORPORATION
    Inventors: Xiaowu Zhao, Wei Wang
  • Publication number: 20100203906
    Abstract: 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: Application
    Filed: February 5, 2010
    Publication date: August 12, 2010
    Applicant: ZTE (USA) INC.
    Inventors: Yonggang Fang, Xiaowu Zhao
  • Publication number: 20100197309
    Abstract: 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: Application
    Filed: December 29, 2009
    Publication date: August 5, 2010
    Inventors: Yonggang Fang, Rajesh Bhalla, Wenfeng Zhang, Xiaowu Zhao
  • Publication number: 20100150069
    Abstract: Techniques, apparatuses, and systems can include mechanisms for transmitting and receiving data on one or more reverse link acknowledgement channels.
    Type: Application
    Filed: October 22, 2009
    Publication date: June 17, 2010
    Applicant: ZTE (USA) INC.
    Inventors: Yonggang Fang, Yu Xin, Xiaowu Zhao
  • Publication number: 20100128674
    Abstract: A method of responding a Delete Personality Request message in Ultra Mobile Broadband is disclosed. The Delete Personality Request message is sent to the access terminal by the access network through an air interface in Ultra Mobile Broadband. When the access network requests to delete one or more personalities, the access terminal sends a Delete Personality Accept message to the access network with the following information: Message ID, Transaction ID, Personality Count and Personality Index, wherein, Personality Count is determined by the access terminal according to the number of the personalities which the access terminal agrees to delete, and the information of Personality Index is one or more personalities that the access terminal agrees to delete. Compared with the prior art, the present invention enhances the personality management mechanism in the UMB system and saves the signaling interaction overhead of the air interface and the air interface resource.
    Type: Application
    Filed: April 14, 2008
    Publication date: May 27, 2010
    Applicant: ZTE CORPORATION
    Inventor: Xiaowu Zhao
  • Publication number: 20100049789
    Abstract: A method for rejecting the 1× paging transferred in the High Rate Packet Data network is provided, in which the Secondary Color Code mechanism is applied so that the AN which a MS/AT registers transmits A13-paging request messages to the other neighboring ANs, these ANs page a cell phone together and some new messages are added to improve the rejection flow. When the SC/MM is in the AN of HRPD system, for the MS/AT on the multiple edges of AN, the invention can be ensured that the MS/AT in the idle or dormant state can effectively receive the service paging from 1× network in the multiple edge regions of AN in HRPD and can reject the 1× service according to selection of users, which ensures the ability of dual network operation.
    Type: Application
    Filed: December 21, 2007
    Publication date: February 25, 2010
    Applicant: ZTE CORPORATION
    Inventor: Xiaowu Zhao
  • Publication number: 20100029278
    Abstract: 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: Application
    Filed: June 17, 2009
    Publication date: February 4, 2010
    Applicant: ZTE (USA) INC.
    Inventors: Yonggang Fang, Wenfeng Zhang, Rajesh Bhalla, Xiaowu Zhao
  • Publication number: 20090316696
    Abstract: The present invention discloses a method for delivering paging from 1X network in HRPD (High Rate Packet Data) network, and the Secondary Color Code scheme is applied in the present invention, which enables the AN in which a MS/AT is registered to send an A13-paging request message to other adjacent ANs which are together therewith used for paging a mobile phone. For a MS/AT at multiple AN boundary, with the present invention, it enhances the possibility of receiving the paging through HRPD air interface control channel due to the service originated from 1X network, and can ensure the double network operation ability.
    Type: Application
    Filed: July 3, 2009
    Publication date: December 24, 2009
    Inventor: Xiaowu Zhao
  • Publication number: 20080280608
    Abstract: Techniques and systems that provide enhanced timer based registration for efficiently registering access terminals with a wireless network.
    Type: Application
    Filed: May 9, 2008
    Publication date: November 13, 2008
    Applicant: ZTE (USA) Inc.
    Inventors: YuanFang Yu, Xiaowu Zhao, Rajesh Bhalla, Yonggang Fang