Patents by Inventor Xuecang Zhang

Xuecang 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).

  • Patent number: 11042477
    Abstract: The present disclosure is directed to a memory management method and to a memory management device arranged to execute memory allocation and/or memory deallocation by use of segregated free lists, which provide information on memory chunks, wherein the memory allocation and/or the memory deallocation are executed according to states of the memory chunks, and wherein the states of the memory chunks comprise: an used state indicating that a memory chunk, which is in used state, is in use, and is not available for allocation; a linked state indicating that a memory chunk, which is in linked state, is not used, is linked within a free list of the segregated free lists, and is available for allocation; a free state indicating that a memory chunk, which is in free state, is not used, is not linked within any of the segregated free lists, and is not available for allocation.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: June 22, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Aleksandr Aleksandrovich Simak, Peter Sergeevich Krinov, Xuecang Zhang
  • Patent number: 10551717
    Abstract: A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring and a second microring that are connected in series, where the first microring and the second microring respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module, where a first electric port of the electric tuning module is connected to a P zone of the first microring and an N zone of the second microring, a second electric port of the electric tuning module is connected to an N zone of the first microring and a P zone of the second microring; and a thermal tuning module, configured to adjust an operating temperature of the dual-microring resonator.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: February 4, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiao Ma, Xuecang Zhang, Jianyi Yang
  • Publication number: 20190220391
    Abstract: The present disclosure is directed to a memory management method and to a memory management device arranged to execute memory allocation and/or memory deallocation by use of segregated free lists, which provide information on memory chunks, wherein the memory allocation and/or the memory deallocation are executed according to states of the memory chunks, and wherein the states of the memory chunks comprise: an used state indicating that a memory chunk, which is in used state, is in use, and is not available for allocation; a linked state indicating that a memory chunk, which is in linked state, is not used, is linked within a free list of the segregated free lists, and is available for allocation; a free state indicating that a memory chunk, which is in free state, is not used, is not linked within any of the segregated free lists, and is not available for allocation.
    Type: Application
    Filed: March 27, 2019
    Publication date: July 18, 2019
    Inventors: Aleksandr Aleksandrovich Simak, Peter Sergeevich Krinov, Xuecang Zhang
  • Publication number: 20180081254
    Abstract: A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring and a second microring that are connected in series, where the first microring and the second microring respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module, where a first electric port of the electric tuning module is connected to a P zone of the first microring and an N zone of the second microring, a second electric port of the electric tuning module is connected to an N zone of the first microring and a P zone of the second microring; and a thermal tuning module, configured to adjust an operating temperature of the dual-microring resonator.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 22, 2018
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Xiao Ma, Xuecang Zhang, Jianyi Yang
  • Patent number: 9829767
    Abstract: A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring and a second microring that are connected in series, where the first microring and the second microring respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module, where a first electric port of the electric tuning module is connected to a P zone of the first microring and an N zone of the second microring, a second electric port of the electric tuning module is connected to an N zone of the first microring and a P zone of the second microring; and a thermal tuning module, configured to adjust an operating temperature of the dual-microring resonator.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 28, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiao Ma, Xuecang Zhang, Jianyi Yang
  • Patent number: 9712901
    Abstract: An interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 18, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuecang Zhang, Qinfen Hao, Yaoda Liu
  • Publication number: 20170123289
    Abstract: A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring and a second microring that are connected in series, where the first microring and the second microring respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module, where a first electric port of the electric tuning module is connected to a P zone of the first microring and an N zone of the second microring, a second electric port of the electric tuning module is connected to an N zone of the first microring and a P zone of the second microring; and a thermal tuning module, configured to adjust an operating temperature of the dual-microring resonator.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 4, 2017
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Xiao Ma, Xuecang Zhang, Jianyi Yang
  • Publication number: 20160112780
    Abstract: An interconnection system, an apparatus, and a data transmission method. In the interconnection system, to-be-transmitted data is converted into a data packet in an optical signal form for transmission, and a control packet corresponding to the data packet is transmitted in an electrical signal form and includes routing information of the data packet. When the control packet passes through a switching node, the switching node directly determines, according to the routing information in the control packet, a neighboring node that serves as a next hop, and opens, in the switching node, an optical path used to transmit the data packet. Because no optical-to-electrical or electrical-to-optical conversion needs to be performed on the control packet and the data packet during an entire transmission procedure, problems of an extra delay and power consumption caused by electrical-optical-electrical conversion can be reduced, thereby improving data transmission efficiency.
    Type: Application
    Filed: October 30, 2015
    Publication date: April 21, 2016
    Inventors: Xuecang Zhang, Qinfen Hao, Yaoda Liu