Patents by Inventor Qingyun Wei

Qingyun Wei 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: 11888648
    Abstract: A softAP bridge is created to support a mesh network that also works seamlessly with any home Wi-Fi AP routers by using Layer-3 techniques to simulate a Layer-2 bridge. With this softAP bridge, Wi-Fi chipsets with integrated special Wi-Fi MAC Layer-2 mesh network support (e.g., 802.11s), or external gateway hubs, are not required. To accomplish this solution, one of the wireless devices may be designated as a relay device for communicating IPv6 data packets between a home AP router and the remaining wireless devices designated as client devices.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: January 30, 2024
    Assignee: Amazon Technologies, Inc.
    Inventors: Jian Lu, QingYun Wei, Shao-Cheng Wang, Avinash Joshi, Zhen Xie, Ankita Rajeev Chandrachud
  • Patent number: 11824961
    Abstract: Technologies directed to determining a TCP throughput of one or more communication links between two or more devices of a LAN. One method includes a first device that generates a second data packet from a first data packet by modifying a destination address field to be the same as a source address field. The first device sends the second data packet to the second device and receives a third data packet in response. The third data packet specifies the address of the first device in a destination address field and a source address field. The first device generates a fourth data packet from the third data packet by modifying data in the source address field to specify the address of the second device and determines a first value indicative of TCP throughput of a first communication link between the first device and the second device.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: November 21, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Avinash Joshi
  • Patent number: 11671904
    Abstract: Techniques for establishing connections between user devices and headless devices attempting to connect to networks. A headless device may attempt to connect to an access point that requires interaction with a captive portal webpage for access to a network. However, the headless device my lack a display to present the captive portal webpage. The headless device may establish a connection with a user device using a PAN protocol. The headless device may then receive the captive portal webpage received from the access point, and relay the webpage to the user device using the PAN protocol. A user may use the user device to interact with the captive portal webpage, and the user device may then relay interaction data back to the headless device using the PAN protocol. The headless device may then provide that interaction data to the access point to be provided access to the network.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: June 6, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Zhao Lou, Shao-Cheng Wang, Avinash Joshi, Xi Chen
  • Patent number: 11595804
    Abstract: Techniques for establishing communication channels between user devices experiencing network connectivity issues and remote communication systems are described herein. The techniques include the use of a secondary device to act as a proxy, or a “middle man,” to facilitate the communications with the user device. A user device may detect lack of network connectivity, and begin broadcasting advertisement messages that indicate the lack of connectivity. A secondary device may detect the advertisement message, and send a discovery message to a connectivity system indicating that it detected the advertisement message. The connectivity system can provide this information to a remote communication system, and the remote communication system can establish a connection with the secondary device and instruct the secondary device to establish a connection with the user device.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 28, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Zhao Lou, QingYun Wei, Shao-Cheng Wang, Avinash Joshi, Zhen Xie, Xi Chen
  • Patent number: 11574044
    Abstract: This disclosure describes, in part, techniques and systems for enabling new devices introduced into respective environments (“provisionee devices”) to be provisioned by existing devices in the respective environments (“provisioner devices”) in a manner in which the provisioning requests sent by the provisioner devices are allocated over time and, thus, do not overwhelm the provisioning system(s) at any given time.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: February 7, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Yajun Chen, Katherine Wang Kwan, Abraham Martin Passaglia, Weile Shen, QingYun Wei
  • Patent number: 11510028
    Abstract: Techniques for performing high-precision presence detection by establishing and monitoring peer-to-peer communication links between user devices residing in a same physical environment. A user device that resides in the environment may establish communication links with multiple other user devices residing in the environment. The user device may monitor the channel properties for those communication links to detect fluctuations in the channel properties caused by a user moving through a signal of the communication links. In examples where the user device detects fluctuations in channel properties for multiple communication links, the user device may determine that the user had moved though signals of the communication links. The user device may determine that, because the user moved through signals of multiple communication links, the user may be in close proximity to the user device, such as in the same room.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: November 22, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Qinghai Gao, Qiang Hu, Avinash Joshi, Piyush Tayal, QingYun Wei, Xiaofu Ma
  • Patent number: 11405789
    Abstract: Technologies for cloud-based secure WLAN group self-forming are described. One provisioner portal device receives, from a client provisionee device that desires to connect to a home WLAN, a first SSID and forwards, to a cloud service via a wireless AP device, the first SSID and a MAC address. The provisioner portal device receives, from the cloud service via the WAP device, a second SSID and a passphrase. The provisioner portal device sends, to the client provisionee device, a response that includes the second SSID. The provisioner portal device creates a one-time provisioning wireless network with the second SSID and the passphrase. Through the provisioner portal device, WAP credentials can be exchanged from the cloud server to the client provisionee device over a secure channel. The WAP credentials can be used to switch to the home WLAN without user interaction to manually enter the WAP credentials at the client provisionee device.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 2, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Andrew Roths, Avinash Joshi, Zhao Lou, James Edwin Christy
  • Patent number: 11284258
    Abstract: Techniques for connecting computing devices to a network are described. For example, a network access device (NAD) connects to a first network that includes a first access point (AP). The NAD receives, from a computing device, first data identifying a second network to be established for the computing device and sends the first data to a server. The NAD receives back a first credential associated with access to the second network and sets up a second AP to the second network. The second AP is associated with the first credential. The NAD sends, to the computing device, second data indicating that access to the second network is available, generates a second credential associated with access to the first network via the first AP, and sends the second credential to the computing device via the second AP.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 22, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Andrew Roths, Avinash Joshi
  • Patent number: 11251960
    Abstract: Techniques for providing a server-based Wi-Fi Protected Setup (WPS) PIN procedure are described. In an example, a computing device generates a PIN associated with a WPS-PIN procedure. The computing device encrypts the PIN to generate an encrypted PIN based on a public key associated with a server. Further, the computing device sends, to another computing device that is communicatively coupled with the server via an access point, a WPS probe request that includes the encrypted PIN. Based on the WPS probe request, the computing device receives, from at least one of the other computing devices or the server, a credential associated with the access point. The computing devices connects to the access point based on the credential.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: February 15, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Andrew Roths, James Edwin Christy
  • Patent number: 11140457
    Abstract: Devices and methods are provided for determining and establishing network path for a streaming video device. The device may receive video from a remote digital video recorder (DVR) through a first access point (AP) wirelessly connected to second AP of the remote DVR, wherein the streaming video device, the first AP, and the remote DVR share a network, wherein the remote DVR includes a third AP. The device may determine a first connection quality associated with a first frequency band between the streaming video device and the first AP. The device may determine a second connection quality associated with a second frequency band between the streaming video device and the second AP. The device may determine that the second connection quality exceeds the first connection quality. The device may establish a direct connection between the streaming video device and the second AP using second frequency band. The device may receive DVR video over the second frequency band.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 5, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Barry Dean Jordan, QingYun Wei, Timothy Thompson, Graham LeBlanc, David James Roberts
  • Patent number: 11089635
    Abstract: A first device transmits network-login information corresponding to a network to a first device, thereby permitting the first device to join the network. A discovery request from a second device is received; the discovery request includes identification information corresponding to the second device. The first device outputs output audio corresponding to the identification information and optionally receives a confirmation from the user.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: August 10, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Graham LeBlanc, Jin Wang
  • Patent number: 11070945
    Abstract: Techniques for performing high-precision presence detection by establishing and monitoring peer-to-peer communication links between user devices residing in a same physical environment. A user device that resides in the environment may establish communication links with multiple other user devices residing in the environment. The user device may monitor the channel properties for those communication links to detect fluctuations in the channel properties caused by a user moving through a signal of the communication links. In examples where the user device detects fluctuations in channel properties for multiple communication links, the user device may determine that the user had moved though signals of the communication links. The user device may determine that, because the user moved through signals of multiple communication links, the user may be in close proximity to the user device, such as in the same room.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: July 20, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Qinghai Gao, Qiang Hu, Avinash Joshi, Piyush Tayal, QingYun Wei, Xiaofu Ma
  • Patent number: 10779162
    Abstract: A system and method establishes a communication connection between a first, potentially input-limited device and a network-access device through an intermediate second device that is connected to the network-access device. The first device broadcasts a discovery request and receives a response from the second device. A first communication connection is established between the first device and the second device. The first device transmits a digital certificate to be sent to a remote device, which may authenticate the first device therewith. Network-login information, such as a network name and network password, are received from the second device, with which the first device establishes the communication connection. The second device may be capable of processing spoken commands (for example, in connection with the remote device), thus allowing the first device to be connected to the network-access device using spoken commands.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: September 15, 2020
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventor: QingYun Wei
  • Patent number: 10630543
    Abstract: A softAP bridge is created to support a mesh network that also works seamlessly with any home Wi-Fi AP routers by using Layer-3 techniques to simulate a Layer-2 bridge. With this softAP bridge, Wi-Fi chipsets with integrated special Wi-Fi MAC Layer-2 mesh network support (e.g., 802.11s), or external gateway hubs, are not required. To accomplish this solution, one of the wireless capable devices may be designated as a relay device for communicating data packets between a home AP router and the remaining wireless capable devices that are designated as client devices.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 21, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: QingYun Wei, Jin Guo
  • 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: 10027592
    Abstract: A group of computing devices use a wireless channel for communication, resulting in congestion. Within that group, some devices may need to exchange time sensitive application data, such as data indicative of control inputs received from a user. A destination device may transmit a clear to send (CTS) frame over the channel that indicates a CTS interval indicative of a time to suspend transmission. Other computing devices respond to the CTS frame by suspending transmission for the specified CTS interval. However, a source device in the group of many computing devices receives the CTS frame and initiates transmission of application data instead of suspending transmission. As a result, the source device transmits while other computing devices are not transmitting. In some implementations a beacon frame may be transmitted before a CTS frame. The destination device may confirm receipt of the application data by transmitting an acknowledgement to the source device.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 17, 2018
    Assignee: AMAZON TECHNOLOGIES, INC
    Inventors: Jin Guo, Shengwei Zhang, Qingyun Wei, King Shaw
  • Publication number: 20040091722
    Abstract: A decorative composite metal panel being of a laminate structure, comprising a baseplate made of thin metal sheet; a faceplate made of thin metal sheet and provided with a decorative film on a surface thereof; an intermediate plate disposed between the baseplate and the faceplate and being of one or a plurality of layers; and adhesive layers provided between the baseplate and the intermediate plate and between the faceplate and the intermediate plate, respectively. The advantageous technical effects thereof are that: the design is novel and has a decorative surface of resin varnish type applied by rolling coating process; the structure is reasonable; the coat is smooth, having no chromatic aberration, and having better decorativeness, the panel has improved specific strength, specific rigidity, and sound and heat insulation performance, so that it can be used widely in construction industry, decoration, machinery, furniture and municipal engineering, etc.
    Type: Application
    Filed: September 29, 2003
    Publication date: May 13, 2004
    Inventors: Meng Chen, Qingyun Wei