Patents by Inventor Yongyu Chang

Yongyu Chang 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: 20180020357
    Abstract: A method for acquiring a management policy of a heterogeneous network, including: acquiring a feasible frequency allocation policy of a small cell network when there is only the small cell network in a heterogeneous network (101); in each frequency allocation policy, when the heterogeneous network includes a device-to-device network, determining an optimal resource allocation policy of the device-to-device network (102); calculating a capacity of the heterogeneous network under each frequency allocation policy and the optimal resource allocation policy corresponding to the each frequency allocation policy, obtaining at least two capacities of the heterogeneous network (103); and obtaining a frequency allocation policy and a resource allocation policy of the heterogeneous network according to at least two capacities of the heterogeneous network (104).
    Type: Application
    Filed: December 23, 2015
    Publication date: January 18, 2018
    Inventors: Yu ZHANG, Xinhui WANG, Bin WANG, Yongyu CHANG, Xinmiao LIU
  • Patent number: 9491767
    Abstract: The disclosure provides a method for frequency reuse in a wireless relay scenario, wherein a center frequency spectrum, an edge frequency spectrum and a random access frequency spectrum are pre-allocated to a cell according to a scenario parameter in the cell; load conditions of all mobile stations (MSs) covered by each relay station (RS) in the cell is calculated and reported to a base station (BS); the BS allocates the random access frequency spectrum to an RS according to load conditions of all RSs and schedules MSs. The disclosure also provides a system for frequency reuse in a wireless relay scenario. With the method and system above, the frequency spectrum planning is configurable, the random access frequency spectrum is introduced, and both the load balancing and user fairness are taken into consideration, which improves the throughput at the edge of the cell, especially can increase the throughput for the users whose throughput ranks poorly.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: November 8, 2016
    Assignee: ZTE CORPORATION
    Inventors: Yanlong Wang, Yongyu Chang, Jie Gao, Yun Zhu
  • Publication number: 20140192706
    Abstract: The disclosure provides a method for frequency reuse in a wireless relay scenario, wherein a center frequency spectrum, an edge frequency spectrum and a random access frequency spectrum are pre-allocated to a cell according to a scenario parameter in the cell; load conditions of all mobile stations (MSs) covered by each relay station (RS) in the cell is calculated and reported to a base station (BS); the BS allocates the random access frequency spectrum to an RS according to load conditions of all RSs and schedules MSs. The disclosure also provides a system for frequency reuse in a wireless relay scenario. With the method and system above, the frequency spectrum planning is configurable, the random access frequency spectrum is introduced, and both the load balancing and user fairness are taken into consideration, which improves the throughput at the edge of the cell, especially can increase the throughput for the users whose throughput ranks poorly.
    Type: Application
    Filed: December 12, 2011
    Publication date: July 10, 2014
    Applicant: ZTE CORPORATION
    Inventors: Yanlong Wang, Yongyu Chang, Jie Gao, Yun Zhu
  • Publication number: 20130265994
    Abstract: The present disclosure discloses an information feedback method for uplink closed loop transmission diversity, which includes: a base station allocates each Fractional Dedicated Physical Channel (F-DPCH) to at least one user; and the base station takes at least one F-DPCH as a feedback channel and arranges information of different users in each said F-DPCH by time division multiplexing, wherein information of at least one user in the F-DPCH includes feedback information of the uplink closed loop transmission diversity and an uplink Transmission Power Control (TPC) command. The present disclosure further discloses an information feedback device for uplink closed loop transmission diversity.
    Type: Application
    Filed: June 3, 2013
    Publication date: October 10, 2013
    Applicant: ZTE CORPORATION
    Inventors: Junqiang Liu, Guang Yang, Chi Zhang, Shuhui Liu, Yongyu Chang