Patents by Inventor Shao-Cheng Wang

Shao-Cheng Wang 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: 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: 11621992
    Abstract: This disclosure describes, in part, techniques for switching between communication channels in order to reduce latency of data transmissions. For instance, an electronic device may establish a first network connection with a network device and second network connection(s) with other electronic device(s). The electronic device may then send data received from the network device to the other electronic device(s). In some circumstances, the electronic device may establish a new network connection with the network device, such as on a different communication channel and/or use a different network band. In such circumstances, the electronic device may use one or more techniques to establish new network connections(s) with the other electronic device(s) in order to reduce the latency it takes to send the data received from the network device to the other electronic device(s).
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: April 4, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Ravi Ichapurapu, Sameet Ramakrishnan, Shao-Cheng Wang, Qinghai Gao
  • 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: 11184949
    Abstract: Technologies directed to Dynamic Frequency Selection (DFS) channel assessment mechanisms are described. A processing device of a first wireless device identifies a channel identifier corresponding to a first operating channel being used by a first radio of the first wireless device to communicate with a first access point (AP) enabled on a radio of a second wireless device. The processing device identifies multiple devices in proximity to the first wireless device using a second radio. The processing device determines an airtime utilization percentage value for each operating channel of the second radio and determines a number of radar events for each DFS channel. The processing device determines a second channel identifier having a fewest number of radar events and selects a second operating channel for a second AP on the second radio, the second channel corresponding to the second operating channel.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: November 23, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Yufeng Wang, Shao-Cheng Wang, Qinghai Gao
  • Patent number: 11089183
    Abstract: Systems and methods for adaptive information packet transmission are disclosed. For example, one or more backup packets may be generated for a given data packet and a packet-spacing value and/or packet-sending order may be determined based at least in part on packet-loss data and/or other factors. The data packets and backup packets may be sent according to the packet-spacing value and packet-sending order, and feedback data may be provided by the receiving device. The feedback data may be utilized by the sending device to adapt the packet transmission parameters.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 10, 2021
    Assignee: Amazon Technologies, Inc.
    Inventors: Michael Alan Pogue, Shao-Cheng Wang
  • Patent number: 10880356
    Abstract: This disclosure describes, in part, techniques for switching between communication channels in order to reduce latency of data transmissions. For instance, an electronic device may establish a first network connection with a network device and second network connection(s) with other electronic device(s). The electronic device may then send data received from the network device to the other electronic device(s). In some circumstances, the electronic device may establish a new network connection with the network device, such as on a different communication channel and/or use a different network band. In such circumstances, the electronic device may use one or more techniques to establish new network connections(s) with the other electronic device(s) in order to reduce the latency it takes to send the data received from the network device to the other electronic device(s).
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: December 29, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Ravi Ichapurapu, Sameet Ramakrishnan, Shao-Cheng Wang, Qinghai Gao
  • Patent number: 10674331
    Abstract: Technology for indoor location estimation of wireless stations is described. In one embodiment, a processing device identifies a plurality of wireless stations that support a signal round-trip-time measurement protocol. The processing device associates the plurality of wireless stations with one another to form a logical grouping of the plurality of wireless stations and provides an indication of the plurality of wireless stations in the logical grouping to each of the plurality of wireless stations. The processing device receives a first round-trip-time measurement value for a signal transmitted between a first wireless station and a second wireless station of the logical grouping and a second round-trip-time measurement value for a signal transmitted between the first wireless station and a third wireless station of the logical grouping. These round-trip-time measurement values indicate a distance between the wireless stations, respectively.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: June 2, 2020
    Assignee: Amazon Technologies, Inc.
    Inventors: Rongsheng Huang, Shao-Cheng Wang, Jungtao Liu, Koohyun Um
  • Patent number: 10574316
    Abstract: A device includes a first radio controller, a second radio controller, and a processor. The processor is configured to execute instructions for determining that a first signal strength of a signal received from a remote device by a first antenna electrically connected to the first radio controller is less than a minimum signal strength threshold for communications using the first antenna, identifying a network process configured to communicate with a remote device using the first radio controller or the second radio controller, and determining that the processor is not executing the network process. The processor is further configured to execute instructions for, determining a second signal strength of a second signal received from the remote device by a second antenna, determining the second signal strength is greater than the first signal strength, and causing the first radio controller to communicate using the second antenna.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: February 25, 2020
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Ravi Ichapurapu, Shao-Cheng Wang, Vipul Jain, Kun Ting Tsai, Milos Jorgovanovic, Chirag Saurabh Bhavsar, Vinay Gotnakodlu Hegde
  • Patent number: 10135639
    Abstract: This invention discloses a multicarrier communication system that includes a transmitter equipment and a receiver equipment. According to a timing scheme, the transmitter equipment processes multiple original symbols for transmission on multiple subcarrier channels, and the receiver equipment processes and detects multiple received symbols from the multiple subcarrier channels. During a time frame of data transmission, the initial three of the original symbols for each of the subcarrier channels are three pilot symbols, forming a preamble. The three preambles of every consecutive three of the subcarrier channels form a preamble unit. All the pilot symbols of the preamble unit are expressed as a 3×3 matrix. When the center pilot symbol of the preamble unit is normalized to 1 or j (i.e., the imaginary unit), the matrix is [ - j - j - j j 1 - j - j j - j ] ? ? or ? [ 1 1 1 - 1 j 1 1 - 1 1 ] .
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 20, 2018
    Assignee: National Tsing Hua University
    Inventors: Chin-Liang Wang, Shao-Cheng Wang
  • Publication number: 20180212799
    Abstract: This invention discloses a multicarrier communication system that includes a transmitter equipment and a receiver equipment. According to a timing scheme, the transmitter equipment processes multiple original symbols for transmission on multiple subcarrier channels, and the receiver equipment processes and detects multiple received symbols from the multiple subcarrier channels. During a time frame of data transmission, the initial three of the original symbols for each of the subcarrier channels are three pilot symbols, forming a preamble. The three preambles of every consecutive three of the subcarrier channels form a preamble unit. All the pilot symbols of the preamble unit are expressed as a 3×3 matrix. When the center pilot symbol of the preamble unit is normalized to 1 or j (i.e., the imaginary unit), the matrix is [ - j - j - j j 1 - j - j j - j ] ? ? or ? [ 1 1 1 - 1 j 1 1 - 1 1 ] .
    Type: Application
    Filed: August 17, 2017
    Publication date: July 26, 2018
    Applicant: National Tsing Hua University
    Inventors: Chin-Liang Wang, Shao-Cheng Wang
  • Patent number: 9967775
    Abstract: Systems and methods are provided for determining precedence between Radio Access Network (RAN) rules and Access Network Discovery and Selection Function (ANDSF) rules when a mobile communication device has access to more than one set of rules for offloading data. Systems and methods for transmitting an offloadable Access Point Name (APN) to a mobile communication device when RAN rules are used. Embodiments of the present disclosure combine the advantages of signaling methods when offloading information to a mobile communication device after a RAN rule has been satisfied such that a base station is able to broadcast a signal that enables all devices camped on an serving cell to offload to the APN.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: May 8, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Florin Baboescu, Dutt Kalapatapu, Shao-Cheng Wang
  • Patent number: 9907006
    Abstract: Systems and methods for adaptive access and handover configuration based on historical data are provided. Access and handover decisions are optimized in a multiple radio access technology environment using historical data associated with network performance. Future needs for access and handovers are predicted using historical data associated with the user and historical data associated with network performance. Performance metrics are received periodically or continuously from nodes in one or more networks at a centralized controller. The centralized multi RAT controller correlates these performance metrics and determines predicted handovers for a user device. Preparations for the predicted handovers can then be made prior to the handover event.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 27, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: John Walley, Wael Diab, Rafael Carmon, Raymond Hayes, Kamlesh Rath, Sindhu Verma, Soumen Chakraborty, Pavan Nuggehalli, Shao-Cheng Wang, Nicholas Ilyadis, Murat Mese
  • Patent number: 9894604
    Abstract: Approaches enable a device capable of wireless communication, such as a device having a wireless adapter, to automatically select and connect to an available wireless access point (AP) having favorable performance, security, and/or other attributes that may be ascertained through various parameters, despite the wireless AP not being the last-known and/or last-connected-to wireless AP. The wireless-enabled device may determine the wireless AP to connect to in a number of ways, such as by determining all available wireless APs in the vicinity of the device and identifying, ranking and/or scoring the parameters for some or all of the available wireless APs to determine a ranking of the wireless APs. Once a favorable wireless AP is identified, the device may automatically attempt to connect to the wireless AP. If the wireless AP is not available, the device may automatically attempt to connect to the next wireless AP in the ranked list, etc.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: February 13, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Binh Quoc Tran, Jin Guo, Shengwei Zhang, Shao-Cheng Wang
  • Patent number: 9723536
    Abstract: In an Long Term Evolution (LTE) environment, LTE base stations may collect relevant data from subscribing wireless devices, as well as from nearby LTE base stations and WLAN access points. Based on the collected data, as well as data of the base station itself, the base station may make a determination as to whether to institute offloading of some or all of the subscribing UEs. Rather than independently communicating the offload command to each of the UEs, the base station may issue a broadcast notification that may be decoded by all of the UEs for performing offloading. In order to mitigate a surge of offloading, the base station can include surge prevention parameters in the broadcast message to distribute or reduce offloading.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: August 1, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Shao-Cheng Wang, Pavan Nuggehalli
  • Patent number: 9558841
    Abstract: A circuit includes a fuse cell, a sense circuit and an output control circuit. The fuse cell includes an electrical fuse. The sense circuit is electrically coupled to the fuse cell and configured for generating a sense signal indicative of a programmed condition of the electrical fuse, at an output of the sense circuit. The output control circuit is electrically coupled to the output of the sense circuit, and the output control circuit is configured for latching the sense signal indicative of the electrical fuse having been programmed, during a read operation of the fuse cell.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: January 31, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Sung-Chieh Lin, Kuo-Yuan Hsu, Wei-Li Liao, Chen-Ming Hung, Yun-Han Chen, Shao-Cheng Wang
  • Patent number: 9521268
    Abstract: A wireless communication device communicating with a serving base station in a wireless communication environment may have one or more applications running. When seeking to handover from the serving base station to a target base station, the wireless communication device adjusts the configurations of the applications based on the new communication link properties. Likewise, when an application is loaded that prefers communication link properties that exceeds a current communication link's capabilities, the wireless communication device may seek out and hand over to other communication links. By cooperatively coordinating the functionality of installed applications with communication link properties, the wireless communication device can maintain high levels of device and application functionality.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: December 13, 2016
    Assignee: Broadcom Corporation
    Inventors: John Walley, Raymond Hayes, Wael Diab, Murat Mese, Kamlesh Rath, Shao-Cheng Wang
  • Patent number: 9462515
    Abstract: In a Long Term Evolution (LTE) environment, the LTE network can coordinate with a subscribing user equipment to manage offloading to a wireless local area network (WLAN) access point or other base station. In doing so, the serving base station on the LTE network can acquire device capabilities of the user equipment and provide configuration details to the user equipment based on those capabilities. These configuration details may cause the user equipment to monitor one or more triggers, and may configure a scan to be later performed by the user equipment. Based on the monitored trigger, the user equipment can then scan the environment according to the scan configuration defined by the base station, and relay scan results to the base station to make a handover determination.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: October 4, 2016
    Assignee: Broadcom Corporation
    Inventors: Shao-Cheng Wang, Pavan Nuggehalli
  • Patent number: 9374768
    Abstract: Methodologies and apparatus to support interworking operations between a cellular radio area network (RAN) and a wireless local area network (WLAN) utilizing broadcast RAN assistance information. In various embodiments, a RAN (such as a LTE/LTE-advanced RAN) transmits RAN assistance information to a multimode user equipment (UE) for use in network selection and traffic steering operations. Certain parameters, such as RAN load assistance information, may be transmitted in a first format or a second, less granular format that changes relatively infrequently over time as compared to the first format. A system information broadcast procedure utilizing a paging message is employed to transmit information in the second format. The paging message may include a change notification flag that triggers a UE to initiate a system information acquisition procedure to a retrieve system information message(s) including the relevant interworking parameters.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: June 21, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Shao-Cheng Wang, Pavan Santhana Krishna Nuggehalli
  • Patent number: 9237490
    Abstract: Carrier aggregation and dual connectivity allow a user device to communicate with one or more base stations on multiple component carrier frequencies. When it is determined that the user device should handover to a new base station, the user device performs a substantial portion of the needed handover operations with the new base station using only one of the component carrier frequencies. Meanwhile, the user device maintains data communications with the original base station on the remaining component carrier frequencies.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: January 12, 2016
    Assignee: Broadcom Corporation
    Inventors: Stephanie Pereira, Leena Zacharias, Pavan Nuggehalli, Shao-Cheng Wang, Soumen Chakraborty, Sindhu Verma