Patents by Inventor Qingchao Liu

Qingchao Liu 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: 20200329401
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 15, 2020
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 10748989
    Abstract: An insulating layer structure for a semiconductor product. The insulating layer structure includes a device substrate, a supporting substrate and a thin film layer. The device substrate and the supporting substrate are silicon wafers. The thin film layer(s) is/are arranged on the device substrate or/and the supporting substrate. The device substrate and the supporting substrate are bonded together through the thin film layer arranged on at least one of the device substrate and the supporting substrate to form an integral multilayer SOI structure. The insulating layer structure formed by the present invention solves problems of serious spontaneous heating of an existing SOI device, severe warpage of an existing SOI structure caused by high-temperature annealing, a poor radio frequency characteristic and the like, and has a predictable relatively higher economic and social value.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 18, 2020
    Assignee: Shenyang Silicon Technology Co., Ltd.
    Inventors: Wenlin Gao, Xiang Li, Qingchao Liu
  • Patent number: 10687251
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 16, 2020
    Assignee: Apple Inc.
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 10492192
    Abstract: Systems and methods for improved Physical Downlink Control Channel (PDCCH) Link Adaptation (LA) in carrier aggregation are disclosed. A method of operation of a radio access node includes transmitting multiple control messages to the wireless device via PDCCHs associated with corresponding serving cells of the wireless device, informing the wireless device of data transmissions to be transmitted to the wireless device via Physical Downlink Shared Channels of the corresponding serving cells and concurrently operating multiple Physical Uplink Control Channel (PUCCH) receivers on one serving cell during a Transmit Time Interval during which feedback from the wireless device indicative of reception of the data transmissions is expected, where each PUCCH receiver is capable of receiving a different format PUCCH message if necessary. The method also includes updating an outer loop LA parameter for each of the PDCCHs based on the determined PDCCH transmission status.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: November 26, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Qingchao Liu, Guoqiang Lu, Edward Mah
  • Publication number: 20190246317
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Publication number: 20190237540
    Abstract: An insulating layer structure for a semiconductor product. The insulating layer structure includes a device substrate, a supporting substrate and a thin film layer. The device substrate and the supporting substrate are silicon wafers. The thin film layer(s) is/are arranged on the device substrate or/and the supporting substrate. The device substrate and the supporting substrate are bonded together through the thin film layer arranged on at least one of the device substrate and the supporting substrate to form an integral multilayer SOI structure. The insulating layer structure formed by the present invention solves problems of serious spontaneous heating of an existing SOI device, severe warpage of an existing SOI structure caused by high-temperature annealing, a poor radio frequency characteristic and the like, and has a predictable relatively higher economic and social value.
    Type: Application
    Filed: December 7, 2018
    Publication date: August 1, 2019
    Applicant: Shenyang Silicon Technology Co., Ltd.
    Inventors: Wenlin GAO, Xiang LI, Qingchao LIU
  • Patent number: 10264490
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 16, 2019
    Assignee: Apple Inc.
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 10149214
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node in the cellular communications network obtains geographic signatures for a number of candidate sCells. The geographic signatures include a geographic signature for each candidate sCell that approximates a coverage area of the candidate sCell. The network node obtains position information for a wireless device and then selects one or more sCells for the wireless device from the candidate sCells based on the geographic signatures for the candidate sCells and the position information for the wireless device. The network node then configures the selected sCell(s) for use by the wireless device according to a carrier aggregation scheme. Using this process, sCell selection is performed, in some examples, without measurement gaps and without disabling an s-Measure parameter.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: December 4, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Guoqiang Lu, Karl D. Mann, Lisa Boström, Eric W. Parsons, Richard Liu, Iris Bujold, Jamie Beuerman, Qingchao Liu, Damitha Ranaweera, Edward Mah
  • Publication number: 20180160400
    Abstract: Systems and methods for improved Physical Downlink Control Channel (PDCCH) Link Adaptation (LA) in carrier aggregation are disclosed. A method of operation of a radio access node includes transmitting multiple control messages to the wireless device via PDCCHs associated with corresponding serving cells of the wireless device, informing the wireless device of data transmissions to be transmitted to the wireless device via Physical Downlink Shared Channels of the corresponding serving cells and concurrently operating multiple Physical Uplink Control Channel (PUCCH) receivers on one serving cell during a Transmit Time Interval during which feedback from the wireless device indicative of reception of the data transmissions is expected, where each PUCCH receiver is capable of receiving a different format PUCCH message if necessary. The method also includes updating an outer loop LA parameter for each of the PDCCHs based on the determined PDCCH transmission status.
    Type: Application
    Filed: April 21, 2015
    Publication date: June 7, 2018
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Qingchao Liu, Guoqiang Lu, Edward Mah
  • Patent number: 9949178
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 17, 2018
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Lisa Boström, Richard Liu, Jamie Beuerman, Damitha Ranaweera, Edward Mah, Karl D. Mann, Eric W. Parsons, Iris Bujold, Qingchao Liu
  • Publication number: 20180063750
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 1, 2018
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Publication number: 20170339607
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Application
    Filed: August 4, 2017
    Publication date: November 23, 2017
    Inventors: Guoqiang Lu, Lisa Boström, Richard Liu, Jamie Beuerman, Damitha Ranaweera, Edward Mah, Karl D. Mann, Eric W. Parsons, Iris Bujold, Qingchao Liu
  • Patent number: 9763139
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 12, 2017
    Assignee: Apple Inc.
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 9756532
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: September 5, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Karl D. Mann, Lisa Boström, Eric W. Parsons, Richard Liu, Iris Bujold, Jamie Beuerman, Qingchao Liu, Damitha Ranaweera, Edward Mah
  • Publication number: 20150382243
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Application
    Filed: June 30, 2015
    Publication date: December 31, 2015
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 9078286
    Abstract: A mesh base transceiver station capable of being configured to provide an optimized backhaul network for a mesh data network deployment. For each mesh base transceiver station in the network, a primary backhaul data path is configured with a wired base transceiver station associated with the network, wherein the primary backhaul data path is a single-hop data path. Upon configuration, the mesh base transceiver station is communicatively coupled with the wired base transceiver station via the primary backhaul data path.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: July 7, 2015
    Assignee: Apple Inc.
    Inventors: Wenhui Yuan, Randy Kuang, Qingchao Liu
  • Patent number: 9072007
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: June 30, 2015
    Assignee: Apple Inc.
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Patent number: 8406212
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: March 26, 2013
    Assignee: Apple Inc.
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang
  • Publication number: 20070195764
    Abstract: A robust header compression (ROHC) controller provides for service flow processing of a ROHC channel in a WiMAX wireless communication system. The ROHC controller controls the negotiations of the MS ROHC capabilities during its registration and the negotiations of the ROHC channel parameters during ROHC enabled service flow setup; the MS ROHC capabilities including ROHC compression and decompression capabilities and ROHC channel and feedback strategies; the channel parameter negotiation covers the ROHC profile set and feedback channel information in addition to the 16e/12D standard. The ROHC controller receives a service flow request for a ROHC enabled service flow, wherein the request includes a QoS profile.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 23, 2007
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: Qingchao Liu, Wenhui Yuan, Randy Kuang