Amazon Technologies, Inc.

Network Performance Research Group LLC

Planetary Network Technologies, Inc.

Kun Ting Tsai

Seung Baek Yi

Erick Kurniawan

Terry F K Ngo

Omar Fawazhashim Zakaria

Cheol Su Kim

Kiran Kumar Edara

Sarang Wagholikar

Nathan Labadie

Ashish Kumar Shukla

Haritha Tamvada

Ravi Ichapurapu

Tzung-I Lee

Durga Laxmi Narayana Swamy Inti

Paul V Yee

Kwok Shing Lee

Kalyan Teja Posani

Ali Mirkamali

Chirag Saurabh Bhavsar

Terry Ngo

Yung-Jui Chen

Varadarajan Gopalakrishnan

Milos Jorgovanovic

In Chul Hyun

Morris Yuanhsiang Hsu

Chiu Ngok Eric Wong

Pratik Kalpesh Patel

Shao-Cheng Wang

Ming-Yi Lin

Huanchun Ye

Andrew David Price

QingYun Wei

Jungtao Liu

Jian Lu

King Shaw

Rongsheng Huang

Songping Wu

James Edwin Christy

Lori Yoshida

Nishant Suneel Sarmukadam

Sudheep Thota

Burak Varan

Vipul Jain

Armando J Lucrecio

Ramesh Radhakrishnan

Karim Abulmakarem Mohamed Khalil

Vinay Gotnakodlu Hegde

Xueheng Hu

Peter Hong

Manvendra Sharma

Chirag Bhavsar

Dan Richard Brukwinski

Terry FK Ngo

Systems, methods, and computer-readable media are disclosed for mitigating microwave interference in electronic devices. Example devices may include memory and at least one processor configured to access the memory and execute computer-executable instructions to determine that a microwave source is inactive, transmit a second message to the access point requesting the access point to send the data, receive, from the access point, the data buffered during the first duration, and transmit a third message to the access point, the third message cancelling the buffer request of the first message.

Mitigation of microwave interference

Techniques for presence detection are described. In an example, system receives, from a first device connected with a computer network that is associated with a location, a first value of a first parameter associated with a link between the first device and a second device. The system determines, using a first prediction model and the first value, a first likelihood of presence at the location. The first prediction model is configured based at least in part on outputs of a second prediction model that uses a second parameter associated with the computer network. The system determines whether the presence is detected at the location based at least in part on the first likelihood.

Presence detection based on link parameter data and network parameter data

Technologies directed to prioritized channel coordination in a multi-tier wireless network are described. One method includes identifying a first group of wireless devices located in a first geographical area using physical proximity information. The method includes, for a first wireless device having a highest priority among the wireless device in the first geographical area, determining a penalty value for each channel of a plurality of available channels and selecting a first channel having a lowest penalty value. The method includes, for a second wireless device having a second-highest priority, determining a penalty value for each of the remaining channels in the plurality of available channels and selecting a second channel, from the remaining channels, having a lowest penalty value. The method includes sending to the first wireless device information about the first channel and sending to the second wireless device information about the second channel.

Multi-tier coordinated channel prioritization system

Technologies directed to a wireless device with RF port impedance detection using concurrent radios are described. One wireless device includes an impedance detection circuit with a bi-directional RF coupler and switching circuitry. A processing device at least two radios, at least two RF ports, and an impedance detection circuit. The impedance detection circuit is configured to measure a first receive signal strength indicator (RSSI) value of a first reflected signal. The first reflected signal corresponding to a first signal sent by one of the at least two radios. The impedance detection circuit determines that the first RSSI value exceeds a threshold. The threshold represents an impedance mismatch condition at or beyond at least one of the two RF ports. The processing device sends a first indicative of the impedance mismatch condition to a second device.

Radio frequency port impedance detection using concurrent radios

Technologies directed to multi-tier coordinated dynamic frequency selection (DFS) service in a multi-tier wireless network are described. One method includes receiving, by a first wireless device, first data associated with a first set of DFS channels. The first wireless device performs a CAC on each DFS channel of the first set of DFS channels in a specified order. The first wireless device identifies a second set of DFS channels in which no radar event is found during the respective CAC and generates second data associated with the second set of DFS channels. The first wireless device receives a first request for the second data from a second wireless device. The first wireless device determines a receive signal strength indicator (RSSI) value associated with the first request and sends a first response, including the second data and the RSSI value, to the second wireless device

Multi-tier coordinated dynamic frequency selection (DFS) system

Techniques for transmitting channel state information (CSI) are described. In an example, a device determines a condition associated with a link parameter of a link between the device and another device. Based at least in part on the condition, the device determines a CSI packet period. The device transmits, to the other device and based at least in part on the CSI packet period, a CSI packet over the link. Accordingly, when the conditions change, the CSI packet period can be adapted to the changes, thereby improving the CSI transmissions over the link given the most current conditions.

Channel state information (CSI) packet transmission based on a dynamic transmission period

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.

Multi-mode dynamic frequency selection system

Technologies directed to sectorized analog beam searching are described. One method includes a first wireless device receiving a first destination address of a second wireless device, a first angle value corresponding to a first direction, and a second angle value corresponding to a second direction. The first wireless device generates a first signal beam transmitted in the first direction and spanning a first geographic region and receives an RSSI value corresponding to the first signal beam. The first wireless generates a second signal beam transmitted in the second direction and spanning a second geographic region and receives a second RSSI value corresponding to the second signal beam. The first wireless device determines that the first RSSI value is greater than the second RSSI value. The first wireless device determines, using a third signal beam a third angle value corresponding to a third direction located within the first geographic region.

Sectorized analog beam search system

Technologies directed to a secured peer-to-peer cloud-assisted authentication exchange protocol are described. A first wireless device receives a first request including information identifying a second wireless device. The first wireless device determines that the information matches second information. The first wireless device activates a virtual access point (VAP) with a modified service set identifier (SSID) having a group identifier appended to a first SSID. The first wireless device authenticates the second wireless device to the VAP. The first wireless device sends credentials and a second SSID to the second wireless device. The second SSID corresponds to a second access point (AP). The first wireless device receives a second request from the second wireless device to connect to the second AP. The first wireless device authenticates the second wireless device with the second AP. The first wireless device deactivates the VAP after expiration of an amount of time.

Cloud-assisted peer-to-peer virtual access endpoint

Network hardware devices organized in a wireless network. A controller device receives device information about each of a multiple network devices, network congestion at each device, scan data, and a station list from each of the devices. The controller device assigns a channel to each radio of the multiple network devices using the device information, the network congestion data, the scan data, and the station list and outputs a first subset of channel assignments to a first group of the network devices, a second subset of channel assignments to a second group of the network devices, and a third subset of channel assignments to a third group of the network devices.

Centralized radio resource management (RRM) of a wireless mesh network

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.

Radio interference detection and dynamic channel bandwidth management

Technologies directed to coordinated dynamic analog beamforming are described. One method includes receiving, by a digital controller of a first wireless device, a data packet, the data packet comprising a destination address of a second wireless device. The method further includes retrieving, from memory, beamformer configuration data associated with the destination address, the beamformer configuration data comprising a phase shifter angle value for a radiation pattern. The method sends, to a beamformer circuit, the phase shifter angle value, the beamformer circuit comprises a power splitter and a set of phase shifters (e.g., at least four). The method causes the set of phase shifters to steer the radiation pattern of electromagnetic energy, radiated by an antenna array of elements, at the phase shifter angle value and sends the data packet to the second wireless device via the antenna array.

Coordinated dynamic analog beamformer

Network hardware devices organized in a wireless mesh network (WMN). The mesh network device receives, from a first device that is not part of the WMN, a first request to receive information about radar events in an area. The first request includes an identifier of a Dynamic Frequency (DFS) channel and first proximity data for at least one mesh network device in the vicinity of the first device. The mesh network device determines that i) the first device is located within the area; and ii) the first device is communicatively coupled with the at least one mesh network device and sends authorization to receive information about the radar events and coverage map data that identifies the area. The mesh network device sends, to the first device, first data about a first radar event in response to the radar event.

Decentralized dynamic frequency selection (DFS) master service

Technologies directed to determining a role of a network device, configuring the network device according to the role, and provisioning the network device to a network are described. In one method, the hardware configuration information and external connection information are stored by the network device. The network device determines a role using the hardware configuration information and the external connection information without any manual intervention or manual configuration. The role can be any one of a Router Node, a Storage Node, a Base Station Node, a Relay Node, a Gateway Node, or a Customer Premises Equipment (CPE) Node. After recognizing the role, the network device can be configured and provisioned to the network without any manual intervention or manual configuration.

Dynamic node reconfiguration and provisioning of network devices

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Fremont, CA, United States of America

Kun Ting Tsai