公开(公告)号：US11283475B1

公开(公告)日：2022-03-22

申请号：US16353938

申请日：2019-03-14

Applicant: Amazon Technologies, Inc.

Inventor： Kun Ting Tsai ,  Ashish Kumar Shukla

IPC: H04W8/00 ,  H04W84/18 ,  H04B1/10 ,  H04B17/318 ,  H04W28/20 ,  H04W84/12 ,  H04W88/08

Abstract: A wireless access point device includes a radio to establish a communication link on a first primary channel using a wireless local area network (WLAN) protocol. The communication link has an operating channel bandwidth and a communication link bandwidth that is adjustable to be identical to or lower than the operating channel bandwidth. The operating channel bandwidth includes the first primary channel and a plurality of secondary channels. The WAP device is to determine that received data, which contains in-phase and quadrature (I/Q) values, does not include a valid WLAN frame; determine that a first secondary channel of the plurality of secondary channels has an interference signal signature via application of frequency domain analysis on the I/Q sample values; and modify the communication link bandwidth from a first frequency range to a second width frequency range, which does not include the first secondary channel.

公开(公告)号：US11134510B1

公开(公告)日：2021-09-28

申请号：US16382053

申请日：2019-04-11

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla

IPC: H04W72/12 ,  H04W84/12 ,  H04W52/04

Abstract: Technologies transmit scheduling in multi-radio devices are described. One multi-radio device includes first and second radios and a scheduler circuit. The scheduler circuit outputs a first signal to the radios in a first mode in which the first radio is transmitting first data and the second WLAN radio is transmitting second data concurrently. The first signal increases a first clear channel assessment energy detect (CCA-ED) threshold to a second CCA-ED threshold. The scheduler circuit outputs a second signal to the second WLAN radio in a second mode. The second signal causes transmission of fourth data to be delayed until after the first radio completes reception of third data. In a third mode, the scheduler circuit outputs a third signal to the first WLAN radio. The third signal causes transmission of fifth data to be delayed until after the second radio completes reception of sixth data.

公开(公告)号：US11129142B1

公开(公告)日：2021-09-21

申请号：US16427067

申请日：2019-05-30

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla

IPC: H04W72/04 ,  H04W40/24 ,  H04W88/10 ,  H04W84/12

Abstract: Technologies directed to allow a wireless network device with a single wireless local area network (WLAN) radio to act as a mesh station (Mesh STA) and also an access point (AP) are described. A processor sends data in a specified mode, via a radio, to identify itself as a mesh station in the mesh network and an AP in an access network. The processor receives a first frame via the radio and determines that the first frame is directed to the mesh station and receives a second frame via the radio and determines that the second frame is directed to the AP. The processor processes the first frame as a mesh frame using first processing logic and processes the second frame as an AP frame using second processing logic.

公开(公告)号：US11706706B1

公开(公告)日：2023-07-18

申请号：US17476240

申请日：2021-09-15

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla

IPC: H04W48/20 ,  H04W48/14 ,  H04W28/08 ,  H04W84/18

CPC classification number: H04W48/20 ,  H04W28/08 ,  H04W48/14 ,  H04W84/18

Abstract: Technologies directed to access point (AP) classification and selection to minimize a number of disconnect messages and achieve better throughput and reduce latency when a device is presented with multiple basic service set identifiers (BSSIDs) for AP selection are described. One method receives disconnect metrics from wireless devices, the disconnect metrics including a reason code associated with a disconnect message and a BSSID and an Organizationally Unique Identifier (OUI) associated with an AP. The method identifies a set of APs using a reason code for a load balancing or band steering operation by clustering the disconnect metrics. The method receives a query with a first BSSID and a first OUI associated with a first AP and determines that the first AP is part of the set of APs using the reason code. The method sends a response with the reason code being used for load balancing or band steering operation.

公开(公告)号：US11483844B1

公开(公告)日：2022-10-25

申请号：US16949901

申请日：2020-11-19

Applicant: Amazon Technologies, Inc.

Inventor： Kun Ting Tsai ,  Kiran Kumar Edara ,  Sarang Wagholikar ,  Omar Fawazhashim Zakaria ,  Ashish Kumar Shukla ,  Cheol Su Kim

IPC: H04W88/08 ,  H04B7/0404 ,  H04W84/18 ,  H04W72/08 ,  H04L67/10 ,  H04L41/12 ,  H04L5/00

Abstract: A wireless mesh network includes a first wireless access point (WAP) device designated as a primary device, where the first WAP device provides network connectivity to a plurality of client devices over a first dynamic frequency selection (DFS) channel. A second WAP device is designated as a secondary device to the first WAP device on the first DFS channel. In response to detection of a radar event by the first WAP device: the first WAP device transitions to being the secondary device on the first DFS channel; the second WAP device transitions to being the primary device on the first DFS channel; and the second WAP device performs a channel availability check (CAC) on a second DFS channel and communicates availability of the second DFS channel to the first WAP device.

公开(公告)号：US11330519B1

公开(公告)日：2022-05-10

申请号：US16790569

申请日：2020-02-13

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla

IPC: H04W52/02 ,  H04W12/06 ,  H04W12/03 ,  H04W80/02 ,  H04W84/12 ,  H04W88/02

Abstract: Techniques for improving the power management of devices are described. In an example, a device transitions into a power save mode. While in the power save mode, the device performs a number of operations. The operations include transitioning into an awake state and determining that the device has no data to transmit to a network access device. The operations also include determining a sequence number associated with data transmission to the network access device. The operations further include generating a frame that includes a header field and a payload field. The header field includes the sequence number and power management data. The power management data indicates a transition of the device to the awake state. Additionally, the operations include transmitting the frame to the network access device.

公开(公告)号：US11082808B1

公开(公告)日：2021-08-03

申请号：US16530289

申请日：2019-08-02

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla ,  Avinash Joshi ,  Binh Tran

IPC: H04L12/66 ,  H04W4/06 ,  H04W72/04 ,  H04L12/18

Abstract: 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.

公开(公告)号：US10750433B1

公开(公告)日：2020-08-18

申请号：US16132002

申请日：2018-09-14

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla

IPC: H04W48/10 ,  H04W24/04 ,  H04W48/00 ,  H04W84/18 ,  H04W88/16

Abstract: Technology for gateway selection in a mesh network is described. In one embodiment, upon restart of a root node in the mesh network, the root node generates first Root Node Announcement (RANN) information and sends one or more announcement messages comprising the first RANN information to other mesh nodes in the mesh network. The RANN information comprises information about a type of backhaul connection between the root node and one or more network resources external to the mesh network and information about a cost metric defining a cost associated with utilizing the root node computing device to access the one or more network resources for each of one or more mesh nodes in the mesh network since those one or more mesh nodes do not have direct access to the one or more network resources. When the root node has sent a number of announcement messages that meets or exceeds a threshold amount determined in view of a total number of mesh nodes in the mesh network, the root node starts sending announcement messages with a second frequency that is lower than the first frequency.

公开(公告)号：US10440631B1

公开(公告)日：2019-10-08

申请号：US15804362

申请日：2017-11-06

Applicant: Amazon Technologies, Inc.

Inventor： Avinash Joshi ,  Ashish Kumar Shukla

IPC: H04W40/00 ,  H04W40/28 ,  H04L12/46 ,  H04L12/725 ,  H04L12/935 ,  H04W84/18

Abstract: 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.

公开(公告)号：US12035234B1

公开(公告)日：2024-07-09

申请号：US17892547

申请日：2022-08-22

Applicant: Amazon Technologies, Inc.

Inventor： Ashish Kumar Shukla ,  Avinash Joshi

IPC: H04W52/02 ,  G06F1/3206 ,  H04L61/103 ,  H04W12/06 ,  H04W48/10 ,  H04W48/20 ,  H04L101/622 ,  H04W84/12

CPC classification number: H04W52/0209 ,  G06F1/3206 ,  H04L61/103 ,  H04W12/06 ,  H04W48/10 ,  H04W48/20 ,  H04L2101/622 ,  H04W84/12

Abstract: 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.