Patents by Inventor Huanchun Ye

Huanchun Ye 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: 10477585
    Abstract: Microwave interference mitigation techniques and systems are disclosed herein. In some embodiments, microwave interference mitigation involves coordinating wireless traffic in accordance with a magnetron's on-and-off cycle so that data is not sent during the magnetron's on period, and is exclusively sent during the magnetron's off period. Wireless traffic can be coordinated using a voltage monitoring and zero-crossing point detection technique coupled with a Clear To Send (CTS) packet. For non-microwave devices, wireless traffic coordination can be achieved using a pattern matching algorithm coupled with a Clear Channel Assessment (CCA) threshold adjustment during the magnetron's on-and-off cycles. Additional, or alternative, microwave interference mitigation techniques involve decreasing a maximum packet size for data packets that are to be transmitted wirelessly in the environment, which guarantees successful transmission of data packets during the magnetron's off periods.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: November 12, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Kun Ting Tsai, Chirag Bhavsar, Huanchun Ye, Varadarajan Gopalakrishnan, QingYun Wei, Morris Hsu, James Edwin Christy
  • Patent number: 10117096
    Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 30, 2018
    Assignee: Athentek Innovations, Inc.
    Inventors: David S. De Lorenzo, Huanchun Ye, Yi-Hsiu Wang, Ivy H. Tseng
  • Patent number: 10117064
    Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined during offline calibration. Automated creation, maintenance, and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for generating spatially-dependent path-loss models are disclosed.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: October 30, 2018
    Assignee: Athentek Innovations, Inc.
    Inventors: David S. De Lorenzo, Huanchun Ye, Ivy H. Tseng, Yi-Hsiu Wang
  • Patent number: 10117065
    Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined via offline calibration. Automated maintenance and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for generating spatially-dependent path-loss models are disclosed.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: October 30, 2018
    Assignee: Athentek Innovations, Inc.
    Inventors: David S. De Lorenzo, Huanchun Ye, Ivy H. Tseng, Yi-Hsiu Wang
  • Patent number: 10114104
    Abstract: An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined via offline calibration. Automated maintenance and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for updating a signal strength database are disclosed. In one variation, a computer-implemented method of discovering a new or moved wireless access point (AP) within an indoor environment involves flagging one of the wireless APs as the new or moved AP; determining a location of the new or moved AP using information from at least one of an installation log and an AP location solver; determining transmit strengths and estimated received signal strengths of signals transmitted from calibration reference points (RPs) to the AP using a spatially-dependent path-loss model; and adding the transmit strengths and estimated received signal strengths to the signal strength database.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: October 30, 2018
    Assignee: Athentek Innovations, Inc.
    Inventors: David S. De Lorenzo, Huanchun Ye, Ivy H. Tseng, Yi-Hsiu Wang
  • Publication number: 20180302130
    Abstract: A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
    Type: Application
    Filed: June 20, 2018
    Publication date: October 18, 2018
    Inventors: James June-Ming WANG, Jianhan LIU, Vishakan PONNAMPALAM, Chao-Chun WANG, Huanchun YE
  • Publication number: 20180180429
    Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 28, 2018
    Applicant: Athentek Innovations, Inc.
    Inventors: David S. DE LORENZO, Huanchun YE, Yi-Hsiu WANG, Ivy H. TSENG
  • Publication number: 20180184288
    Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 28, 2018
    Applicant: Athentek Innovations, Inc.
    Inventors: David S. DE LORENZO, Huanchun YE, Yi-Hsiu WANG, Ivy H. TSENG
  • Publication number: 20180184253
    Abstract: Systems and methods to generate safe zones and safe routes associated with a device are disclosed. These safe zones and safe routes can be used to map complicated location behavior into location behavior scores that can be applied systematically to tracking and authentication applications.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 28, 2018
    Applicant: Athentek Innovations, Inc.
    Inventors: David S. DE LORENZO, Huanchun YE, Yi-Hsiu WANG, Ivy H. TSENG
  • Patent number: 9967897
    Abstract: The invention provides a mobile communication device having a first wireless communication module with a strong driving circuit, and a second wireless communication module with a weak driving circuit. The first wireless communication module is coupled to the second wireless communication module via only one wire. The first wireless communication module sends a first traffic pattern of a first wireless transceiving to the second wireless communication module via the wire, and receives a second traffic of a second wireless transceiving from the second wireless communication module via the wire. The second traffic pattern indicates whether the second wireless communication module decides to use a remaining period of time, in which the first wireless communication module is not required to perform wireless transceiving, for the second wireless transceiving.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 8, 2018
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Hong-Kai Hsu, I-Lin Hsieh, Jwo-An Lin, I-Kang Fu, Huanchun Ye
  • Patent number: 9936462
    Abstract: In a semi-open loop rate adaptation scheme for a multiple-input multiple-output (MIMO) system, a transmitter can advantageously use one or more quality metrics of an uplink as well as knowledge of device characteristics of both ends to perform fast and accurate rate adaptation.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: April 3, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Won-Joon Choi, Ning Zhang, Huanchun Ye, Jeffrey M. Gilbert
  • Patent number: 9883547
    Abstract: A communication method that operates by determining a first set of physical parameters of a first channel by a coordinator in a wireless communication system; establishing communication with a first set of devices over the first channel; determining a protection period in accordance with a pre-determined rule; broadcasting a channel-adjustment message, wherein the channel-adjustment message comprises a set of instructions for indicating how to adjust from the first channel to a second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel; and communicating with a second set of devices over the second channel during the protection period.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: January 30, 2018
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Chao-Chun Wang, Jianhan Liu, Chih-Shi Yee, Huanchun Ye, James June-Ming Wang
  • Publication number: 20170135148
    Abstract: A communication method that operates by determining a first set of physical parameters of a first channel by a coordinator in a wireless communication system; establishing communication with a first set of devices over the first channel; determining a protection period in accordance with a pre-determined rule; broadcasting a channel-adjustment message, wherein the channel-adjustment message comprises a set of instructions for indicating how to adjust from the first channel to a second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel; and communicating with a second set of devices over the second channel during the protection period.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Chao-Chun WANG, Jianhan LIU, Chih-Shi YEE, Huanchun YE, James June-Ming WANG
  • Patent number: 9572192
    Abstract: A method of supporting incompatible channelization in a wireless communications system is provided. A coordinating device determines a first set of physical parameters of a first wireless channel. The first set of physical parameters includes a channel bandwidth, a central frequency, a transmit power limit, and a modulation and coding scheme. The coordinating device establishes communication with a first set of communications devices over the first wireless channel. The coordinating device then broadcasts a channel-adjustment message and determines a protection period. The channel-adjustment message comprises a set of instructions on how to adjust to a second set of physical parameters of a second wireless channel. A second set of communications devices adjust physical parameters based on the channel-adjustment message. Finally, the coordinating device communicates with the second set of communications devices over the second wireless channel during the protection period.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: February 14, 2017
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Chao-Chun Wang, Jianhan Liu, Chih-Shi Yee, Huanchun Ye, James June-Ming Wang
  • Publication number: 20160329940
    Abstract: A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
    Type: Application
    Filed: July 15, 2016
    Publication date: November 10, 2016
    Inventors: James June-Ming WANG, Jianhan LIU, Vishakan PONNAMPALAM, Chao-Chun WANG, Huanchun YE
  • Patent number: 9380596
    Abstract: A wireless communication device has a first wireless communication module coupled to a second wireless communication module via only one wire. The first wireless communication module is configured to performing a first wireless transceiving and to send a first request to the second wireless communication module indicating a remaining period of time to perform a second wireless transceiving, during which the first wireless communication module is not required to perform wireless transceiving. The second wireless communication module is configured to perform a second wireless transceiving, the second wireless communication module further configured to send a first response to the first request by indicating acceptance of the request if a status of the second wireless communication module is in an active mode, else by indicating that the first request is not accepted if the status of the second wireless communication module is in a sleep mode.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: June 28, 2016
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Hong-Kai Hsu, I-Lin Hsieh, Jwo-An Lin, I-Kang Fu, Huanchun Ye
  • Patent number: 9277565
    Abstract: Methods for preventing coexistence interference between a Bluetooth Low Energy (BLE) radio and a collocated LTE radio are provided. In a first solution, the BLE radio adds padding bytes to BLE packets such that the total packet length falls in a specific range to prevent coexistence interference. In a second solution, the BLE radio limits the total BLE packet length to a predefined length to prevent coexistence interference. In a third solution, the data rate for transmitting the BLE packets is higher than a predefined rate to prevent coexistence interference. In a fourth solution, the BLE radio dynamically adjusts the time inter-frame-spacing (T_IFS) value to prevent coexistence interference with the collocated LTE radio.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 1, 2016
    Assignee: MEDIATEK INC.
    Inventors: Li-Chun Ko, Huanchun Ye, Shuo-Jen Hsu, I-Kang Fu
  • Patent number: 9258070
    Abstract: A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: February 9, 2016
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: James June-Ming Wang, Vishakan Ponnampalam, Jianhan Liu, Chao-Chun Wang, Huanchun Ye
  • Patent number: 9253767
    Abstract: A scheduling-based downlink MU-MIMO mechanism is proposed in a wireless communication system. An access point transmits a first scheduling message to a plurality of stations. The first scheduling message reserves a first transmission burst for channel sounding. The AP then transmits a sounding signal and in response receives channel state information (CSI) from the plurality of stations. Based on the CSI, the AP performs MU-MIMO encoding and applies transmit beamforming (precoding). The AP transmits a second scheduling message that reserves a second transmission burst for MU-MIMO transmission. The AP then transmits downlink data streams to multiple stations simultaneously. Finally, the AP receives uplink acknowledgements from the stations. In one embodiment, the scheduling-based MU-MIMO is implemented using PSMP scheduling technique. PSMP-based downlink MU-MIMO allows both 802.11n and 802.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: February 2, 2016
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: James June-Ming Wang, Huanchun Ye
  • Patent number: 9232443
    Abstract: A wireless device having a central control entity that coordinates multiple radio transceivers co-located within the same device platform to mitigate coexistence interference. The wireless device comprises an LTE transceiver, a WiFi transceiver, a BT transceiver, or a GNSS receiver. In one embodiment, the central control entity receives radio signal information from the transceivers and determines control information. The control information is used to trigger FDM solution such that the transceivers operate in designated frequency channels to mitigate co-existence interference. In another embodiment, the central control entity receives traffic and scheduling information from the transceivers and determines control information. The control information is used to trigger TDM solution such that the transceivers are scheduled for transmitting or receiving radio signals over specific time duration to mitigate co-existence interference.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 5, 2016
    Assignee: MEDIATEK INC.
    Inventors: I-Kang Fu, Li-Chun Ko, Chi-Chen Lee, Huanchun Ye, Hong-Kai Hsu, William Plumb