Patents by Inventor Wanping Zhang

Wanping Zhang 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: 20150257057
    Abstract: Performing selective tune-away by a user equipment (UE). The UE may include a first radio that is configurable to operate according to a first radio access technology (RAT) and a second RAT. The UE may use the radio to communicate using the first RAT and the second RAT using the first radio. The UE may perform handover for the first RAT. During handover, the UE may perform a page decoding for the second RAT, but may not perform (e.g., may block) neighbor cell detection for the second RAT during the handover of the first RAT. After completion of the handover, the UE may perform neighbor cell detection for the second RAT.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 10, 2015
    Applicant: Apple Inc.
    Inventors: Li Su, Wanping Zhang, Yingjie Zhao
  • Publication number: 20150257042
    Abstract: Performing selective tune-away by a user equipment (UE). The UE may include a first radio that is configurable to operate according to a first radio access technology (RAT) and a second RAT. The UE may use the radio to communicate using the first RAT and the second RAT using the first radio. The UE may also perform measurement of a received signal strength for the first RAT. The UE may determine if the received signal strength is less than a threshold. Neighbor cell measurement and/or synchronization may be performed if the received signal strength is less than the threshold. However, if the received signal strength is greater than the threshold, the neighbor cell measurement and/or synchronization may not be performed. The UE may continue to perform page decoding for the first RAT using the first radio, e.g., for each discontinuous reception (DRX) cycle of the first RAT.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 10, 2015
    Applicant: APPLE INC.
    Inventors: Li Su, Wanping Zhang, Yingjie Zhao, Yu-lin Wang
  • Patent number: 8965352
    Abstract: In order to reduce the time delay when transitioning between different communication protocols used to communicate information via a cellular-telephone network, an electronic device (such as a cellular telephone) may only partially disable a software stack associated with a current communication protocol. In particular, after receiving an indicator that there is a message to be communicated using a second communication protocol while the electronic device is currently configured to communicate using a first communication protocol, the electronic device may disable a portion of a software stack associated with the first communication protocol and may enable a software stack associated with the second communication protocol. Then, the electronic device communicates the message using the second communication protocol.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: February 24, 2015
    Assignee: Apple Inc.
    Inventors: Wanping Zhang, Tahir Shamim, Swaminathan Balakrishnan
  • Patent number: 8958799
    Abstract: User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 17, 2015
    Assignee: Apple Inc.
    Inventors: Sarma V. Vangala, Samy Khay-Ibbat, Si Li, Sreevalsan Vallath, Swaminathan Balakrishnan, Tahir Shamim, Tarik Tabet, Wael S. Barakat, Wanping Zhang
  • Publication number: 20140376516
    Abstract: A method for responding to a page message is provided. The method can include a wireless communication device receiving a page message on a first channel of a first network; suspending a connection to a second network in response to receiving the page message; transitioning to a second channel of the first network prior to responding to the page message; and sending a response message responsive to the page message on the second channel.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Anish K. GOYAL, Chandra S. CHETTY, Tahir SHAMIM, Jianxiong SHI, Wanping ZHANG
  • Patent number: 8867517
    Abstract: A method for responding to a page message is provided. The method can include a wireless communication device receiving a page message on a first channel of a first network; suspending a connection to a second network in response to receiving the page message; transitioning to a second channel of the first network prior to responding to the page message; and sending a response message responsive to the page message on the second channel.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: October 21, 2014
    Inventors: Anish K. Goyal, Chandra S. Chetty, Tahir Shamim, Jianxiong Shi, Wanping Zhang
  • Publication number: 20140293960
    Abstract: In a wireless communication system, a user equipment (UE) needing to undertake a CSFB process can use one or more secondary RF receive chains to search for candidate 2G/3G cells in parallel with using a primary RF receive chain to wait for an ESR response.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicant: Apple Inc.
    Inventors: Li Su, Wanping Zhang, Qiang Miao
  • Publication number: 20140113630
    Abstract: User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell.
    Type: Application
    Filed: February 26, 2013
    Publication date: April 24, 2014
    Applicant: APPLE INC.
    Inventors: Sarma V. Vangala, Samy Khay-Ibbat, Si Li, Sreevalsan Vallath, Swaminathan Balakrishnan, Tahir Shamim, Tarik Tabet, Wael S. Barakat, Wanping Zhang
  • Publication number: 20140073307
    Abstract: In order to reduce the time delay when transitioning between different communication protocols used to communicate information via a cellular-telephone network, an electronic device (such as a cellular telephone) may only partially disable a software stack associated with a current communication protocol. In particular, after receiving an indicator that there is a message to be communicated using a second communication protocol while the electronic device is currently configured to communicate using a first communication protocol, the electronic device may disable a portion of a software stack associated with the first communication protocol and may enable a software stack associated with the second communication protocol. Then, the electronic device communicates the message using the second communication protocol.
    Type: Application
    Filed: November 21, 2012
    Publication date: March 13, 2014
    Applicant: APPLE INC.
    Inventors: Wanping Zhang, Tahir Shamim, Swaminathan Balakrishnan
  • Publication number: 20140066055
    Abstract: A network reselection procedure, of a wireless communication device, that occurs following a network detachment event, such as a device sleep event or a device power savings mode event. The wireless communication device attempts to acquire a first wireless network to which the wireless communication device was most recently attached, immediately preceding the network detachment event. Then, in response to an unsuccessful acquisition of the first wireless network, the wireless communication device attempts an alternate network acquisition utilizing a Most Recently Used List (MRUL) that is stored at the wireless communication device and includes information about one or more frequency bands allocated to a primary service provider with which the wireless communication device is affiliated. After determining whether the alternate network acquisition attempt was successful, the wireless communication device attaches to a second network and stores information associated with the second network.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: Apple Inc.
    Inventors: Swaminathan BALAKRISHNAN, Sarma V. VANGALA, Wanping ZHANG, Tahir SHAMIM, Sreevalsan VALLATH
  • Publication number: 20140003397
    Abstract: A method for responding to a page message is provided. The method can include a wireless communication device receiving a page message on a first channel of a first network; suspending a connection to a second network in response to receiving the page message; transitioning to a second channel of the first network prior to responding to the page message; and sending a response message responsive to the page message on the second channel.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 2, 2014
    Inventors: Anish K. Goyal, Chandra S. Chetty, Tahir Shamim, Jianxiong Shi, Wanping Zhang