Patents by Inventor Avinash Joshi
Avinash Joshi 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).
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Patent number: 11916910Abstract: The disclosure describes, in part, techniques for attempting to diagnose the cause of a wireless connection problem in a client computing device and, in response, performing one or more actions for remedying the problem. In some instances, the techniques describe the client device communicating with one or more other client devices in the environment to determine whether they are connected to the WAP using the same password or a different password as the client device. If the former, then the client device may determine that the network stack is likely the cause of the connection error and may attempt to restart the network stack to current problem. If the other devices indicate that they are using the same password, however, then the client device may prompt a user to re-enter the network password.Type: GrantFiled: June 24, 2021Date of Patent: February 27, 2024Assignee: Amazon Technologies, Inc.Inventors: Ashish Kumar Shukla, Avinash Joshi
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Patent number: 11888648Abstract: 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: GrantFiled: September 29, 2022Date of Patent: January 30, 2024Assignee: Amazon Technologies, Inc.Inventors: Jian Lu, QingYun Wei, Shao-Cheng Wang, Avinash Joshi, Zhen Xie, Ankita Rajeev Chandrachud
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Patent number: 11824961Abstract: 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: GrantFiled: January 25, 2021Date of Patent: November 21, 2023Assignee: Amazon Technologies, Inc.Inventors: QingYun Wei, Avinash Joshi
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Patent number: 11671904Abstract: 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: GrantFiled: September 14, 2020Date of Patent: June 6, 2023Assignee: Amazon Technologies, Inc.Inventors: QingYun Wei, Zhao Lou, Shao-Cheng Wang, Avinash Joshi, Xi Chen
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Patent number: 11595804Abstract: 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: GrantFiled: May 27, 2020Date of Patent: February 28, 2023Assignee: Amazon Technologies, Inc.Inventors: Zhao Lou, QingYun Wei, Shao-Cheng Wang, Avinash Joshi, Zhen Xie, Xi Chen
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Patent number: 11510028Abstract: 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: GrantFiled: June 17, 2021Date of Patent: November 22, 2022Assignee: Amazon Technologies, Inc.Inventors: Qinghai Gao, Qiang Hu, Avinash Joshi, Piyush Tayal, QingYun Wei, Xiaofu Ma
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Patent number: 11483766Abstract: Techniques for increasing the security and reliability of frame transmission are described. In an example, a network access device transmits a first frame indicating that a protected frame is to be used for a power mode change. The network access device receives a second frame that includes an identifier of a device and a change to a power mode of the device. The network access device determines whether the second frame is protected. In addition, the network access device determines whether data received for the device is to be stored prior to transmission to the device based at least in part on whether the second frame is protected.Type: GrantFiled: September 5, 2019Date of Patent: October 25, 2022Assignee: Amazon Technologies, Inc.Inventors: Ashish Kumar Shukla, Avinash Joshi
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Patent number: 11405789Abstract: 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: GrantFiled: February 12, 2019Date of Patent: August 2, 2022Assignee: Amazon Technologies, Inc.Inventors: QingYun Wei, Andrew Roths, Avinash Joshi, Zhao Lou, James Edwin Christy
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Patent number: 11284258Abstract: 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: GrantFiled: June 25, 2019Date of Patent: March 22, 2022Assignee: Amazon Technologies, Inc.Inventors: QingYun Wei, Andrew Roths, Avinash Joshi
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Patent number: 11240746Abstract: A mesh network device includes a radio and an application processor coupled to the radio. The application processor includes a network association engine, which receives, receives, from a client consumption device, a requested content identifier; receives, from a first access point, a beacon including a first throughput of the network path between the network ingress device and the first access point; receives, from a second access point, a beacon including a second throughput of the network path between the network ingress device and the second access point; determines that the first throughput exceeds the second throughput; transmits, to the first access point, an association request followed by a digital content request comprising a requested content identifier; receives, from the first access point, the first requested digital content item; and causes the requested digital content item to be rendered by the client consumption device.Type: GrantFiled: December 14, 2017Date of Patent: February 1, 2022Assignee: Amazon Technologies, Inc.Inventors: Chiu Ngok Eric Wong, Avinash Joshi
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Patent number: 11190391Abstract: Technology for network loop detection in a hybrid mesh network is described. In one embodiment, processing logic receives a network event message indicating a change in a network topology of a mesh network and, responsive to the network event message, determines that the mesh network includes at least one network loop comprising a plurality of communication links connecting two nodes of the mesh network. The processing logic further determines that the at least one network loop includes at least one wired communication link and disables at least one of the plurality of communication links to disconnect the at least one network loop.Type: GrantFiled: April 16, 2018Date of Patent: November 30, 2021Assignee: Amazon Technologies, Inc.Inventors: Avinash Joshi, Ashish Kumar Shukla, Radhakrishnan Suryanarayanan, Sarang Shrikrishna Wagholikar
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Patent number: 11082808Abstract: Techniques are described for an unbuffered multicast delivery mode representing the capability of transmitting a multicast frame within a same DTIM interval during which the multicast frame is received. In an example, a network access device determines that a first computing device is in a power saving mode. The network access device receives, during a DTIM interval while the first computing device is in the power saving mode, a multicast frame destined to a multicast MAC address. The network access device determines an association between the multicast MAC address and a device MAC address of a second computing device. The network access device sends, during the DTIM interval and based on the association, the multicast frame to the second computing device.Type: GrantFiled: August 2, 2019Date of Patent: August 3, 2021Assignee: Amazon Technologies, Inc.Inventors: Ashish Kumar Shukla, Avinash Joshi, Binh Tran
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Patent number: 11070945Abstract: 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: GrantFiled: July 30, 2020Date of Patent: July 20, 2021Assignee: Amazon Technologies, Inc.Inventors: Qinghai Gao, Qiang Hu, Avinash Joshi, Piyush Tayal, QingYun Wei, Xiaofu Ma
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Patent number: 11037432Abstract: Systems and methods of security monitoring using a learning process are provided. Intelligent security systems may perform a learning process to observe the paths of travel by occupants, as detected by various sensors distributed throughout a monitored location over a period of time. After the security system is initially installed, the system may learn the various paths taken by occupants of the house by keeping track of the sequence in which the sensors are activated due to normal human activity. Based on this data, a fully connected graph of sensors with all valid interconnections between sensors is available to the security system.Type: GrantFiled: December 13, 2019Date of Patent: June 15, 2021Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Ashish Kumar Shukla, Sakthi Kannan Ramabadran, Xi Chen, Armando J. Lucrecio, Avinash Joshi
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Patent number: 10595185Abstract: Technology for neighbor selection with radio channel diversity awareness is described. In one embodiment, processing logic receives an RSSI value, a neighbor-sector identifier that identifies an antenna, and an unused channel list from each neighboring mesh network device. The processing logic generates a data structure with data in entries that are sorted according to an order of ascending or descending RSSI values. The processing logic performs a first search of the data structure to obtain a first set of radio channels for a first set of communication links and a second search to obtain a second set of radio channels for a second set of communication links. The processing logic determines that the second set of radio channels is higher than a second connectivity-quality metric value of the first set of radio channels and sends a neighbor pairing request to each neighboring mesh network device in the second set.Type: GrantFiled: February 1, 2018Date of Patent: March 17, 2020Assignee: Amazon Technologies, Inc.Inventors: Xi Chen, Lori Yoshida, Avinash Joshi
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Patent number: 10588069Abstract: A method of route discovery in wireless mesh networks comprises: receiving, by a first mesh network device of a wireless mesh network, from a second mesh network device of the wireless mesh network, a first route request identifying a destination mesh network device of the wireless mesh network and a first path selection metric value; determining a path selection metric increment, wherein the path selection metric increment reflects a radio channel contention by the first mesh network device and the second mesh network device; generating a second path selection metric value by adding the path selection metric increment to the first path selection metric value; and broadcasting a second route request identifying the destination mesh network device and the second path selection metric value.Type: GrantFiled: November 2, 2017Date of Patent: March 10, 2020Assignee: Amazon Technologies, Inc.Inventors: Xi Chen, Ashish Kumar Shukla, Avinash Joshi, Qiang Hu
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Patent number: 10484925Abstract: A method of route discovery in wireless mesh networks comprises: receiving, using a first radio channel, by a first mesh network device of a wireless mesh network, a first route request identifying a destination mesh network device of the wireless mesh network, a first count of interfering communication links on a network path traversed by the first route request, and a second radio channel utilized by a second mesh network device along the network path; determining that the first radio channel matches the second radio channel; incrementing the first count of interfering communication links to produce a second count of interfering communication links; and broadcasting a second route request including an identifier of the destination mesh network device, a value reflecting the second count of interfering communication links, and an identifier of the first radio channel.Type: GrantFiled: February 1, 2018Date of Patent: November 19, 2019Assignee: Amazon Technologies, Inc.Inventors: Xi Chen, Avinash Joshi
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Patent number: 10440631Abstract: A method of payload type aware routing in wireless mesh networks comprises: identifying, by a first mesh network device of a wireless mesh network, a plurality of path selection metric types supported by the wireless mesh network; identifying, by inspecting an outgoing data frame, a path selection metric type corresponding to a payload type of the outgoing data frame; determining that the path selection metric type is comprised by the plurality of path selection metric types supported by the wireless mesh network; determining, using the path selection metric type, a network path to a destination mesh network device of the outgoing data frame, wherein the network path comprises an identifier of an intermediate mesh network device between the first mesh network device and the destination mesh network device; and transmitting the outgoing data frame to the intermediate mesh network device.Type: GrantFiled: November 6, 2017Date of Patent: October 8, 2019Assignee: Amazon Technologies, Inc.Inventors: Avinash Joshi, Ashish Kumar Shukla
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Patent number: 10219142Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.Type: GrantFiled: May 15, 2017Date of Patent: February 26, 2019Assignee: Amazon Technologies, Inc.Inventors: Lori Yoshida, Varadarajan Gopalakrishnan, Sheung Mei Chan, Avinash Joshi, Andrew David Price, Jungtao Liu
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Publication number: 20180331914Abstract: Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes multiple radios. A processing device of a first network hardware device receives, via a first radio, a beacon frame from a second mesh network device, scans, via a second radio, for a second mesh frame of the second mesh network device, and receives the mesh frame. The processing device determines a first sector identifier that identifies an antenna from which the mesh frame is transmitted, a first signal strength indicator value corresponding to the mesh frame, an unused radio and an unused channel of the second mesh network device. The processing device sends a first message to the unused radio of the second mesh network device on the unused channel via the second radio, receives a second message, and configures the multiple radios to communicate with the second mesh network device.Type: ApplicationFiled: May 15, 2017Publication date: November 15, 2018Inventors: Lori Yoshida, Varadarajan Gopalakrishnan, Sheung Mei Chan, Avinash Joshi, Andrew David Price, Jungtao Liu