Patents by Inventor Zhaojun Cheng

Zhaojun Cheng 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).

  • Patent number: 10334654
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: June 25, 2019
    Assignee: Apple Inc.
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Publication number: 20180279398
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Application
    Filed: March 26, 2018
    Publication date: September 27, 2018
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Patent number: 9930714
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: March 27, 2018
    Assignee: Apple Inc.
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Publication number: 20170118788
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Application
    Filed: January 6, 2017
    Publication date: April 27, 2017
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Patent number: 9572175
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 14, 2017
    Assignee: Apple Inc.
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Publication number: 20140269562
    Abstract: A wireless communication system is presented for multiple wireless technology coexistence in a mobile device. A method according to this application might include obtaining one or more transmit allocation parameters for a wireless transmission via a first radio technology at a first wireless processor and the preparing to receive wireless data via a second radio technology at a second wireless processor. Next, the exemplary method might request that the wireless transmission be deferred, followed by deciding whether to grant the deferral request based at least on the one or more transmit allocation parameters.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Apple Inc.
    Inventors: William S. Burchill, Wen Zhao, Huanyu Chen, Zhaojun Cheng, Weiping Dou
  • Publication number: 20130303089
    Abstract: A system and method for wireless device testing. The system includes a reverberation chamber (RC) and a downlink channel emulator. A wireless device is placed within the RC. Probe antennas are positioned within the RC. The downlink (DL) channel emulator couples to the probe antennas. The DL channel emulator is configured to: (a) receive downlink stimulus signals; and (b) generate downlink intermediate signals based on the downlink stimulus signals in order to emulate desired downlink channel characteristics. The probe antennas are configured to respectively transmit the downlink intermediate signals into the RC for reception by the wireless device. The system may also include an uplink channel emulator, which receives uplink transmit signals from the RC, and generates uplink terminal signals based on the uplink transmit signals in order to emulate desired uplink channel characteristics. The uplink transmit signals may be used to evaluated the performance of the wireless device.
    Type: Application
    Filed: October 15, 2012
    Publication date: November 14, 2013
    Applicant: APPLE INC.
    Inventors: Xiaowen Wang, Weiping Dou, Warren Lee, Zhaojun Cheng, Syed Aon Mujtaba
  • Patent number: 8515496
    Abstract: Methods and systems for selecting one of a plurality of antennas to be used as a transmit antenna based on an orientation of a user device are described. A user device determines an orientation of the user device, and selects one of multiple antennas to use as a first transmit antenna based on the orientation of the user device. The user device transmits information using the first transmit antenna.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: August 20, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Zhaojun Cheng, Khaled A. Obeldat, Mark Corbridge, Cheng-Jung Lee
  • Publication number: 20130156080
    Abstract: Methods and systems for selecting one of a plurality of antennas to be used as a transmit antenna based on an orientation of a user device are described. A user device determines an orientation of the user device, and selects one of multiple antennas to use as a first transmit antenna based on the orientation of the user device. The user device transmits information using the first transmit antenna.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Inventors: Zhaojun Cheng, Khaled A. Obeldat, Mark Corbridge, Cheng-Jung Lee