Cisco Technology, Inc.

Matthew Aaron Silverman

Paul Jeffrey Stager

Jerome Henry

Brian Donald Hart

John Matthew Swartz

Ardalan Alizadeh

Pooya Monajemi

Robert E Barton

David Stuart Kloper

Gautam Dilip Bhanage

Vishal Satyendra Desai

Sivadeep Reddy Kalavakuru

Santosh Ghanshyam Pandey

Fred Jay Anderson

John Martin Blosco

Xu Zhang

Robert Edgar Barton

Khashayar Mirfakhraei

Mithat C Dogan

Arun G Khanna

Salvatore Valenza

Abhishek Mukherji

Nagendra Kumar Nainar

Hang Jin

Li Guo

Samer Salam

Malcolm Muir Smith

Akram Ismail Sheriff

Ahmadreza Hedayat

Neil Robert Diener

Chandra Vaidyanathan

Manoj Gupta

Qing Zhao

Pascal Thubert

Carlos M Pignataro

Juan Carlos Zuniga

David C White, Jr

Gary L Sugar

Jay Kemper Johnston

Santosh Ramrao Patil

Magnus Mortensen

Domenico Ficara

Santosh Babaji Kulkarni

Indermeet Singh Gandhi

Vinay Saini

Young Il Choi

Gangadharan Byju Pularikkal

Amine Choukir

Zhigang Gao

Evgeny Yankevich

Joshua David Suhr

Huaiyi Wang

Taha Hajar

Nikodin Ristanovic

Jiunming Huang

Amir Hosein Kamalizad

Samer M Salam

James Frank Florwick

Oscar Bejarano Chavez

Mukul Chandail

Raghuram Rangarajan

Daniel Joseph Lyons

Huy Phuong Tran

Mohammad Janani

Danielle N Bane

Stephen Joseph McCarthy

Mahesh Daisy

Dan Lyons

Swapnil Devendrakumar Shah

Mohsen Jamalabdollahi

Benjamin Jacob Cizdziel

Yanxin Na

Xiaoli Ma

Tak Ming Pang

Jie Cheng Jiang

Daniel Wee

Corey D Metsker

Abhishek Bhattacharyya

Narayan Vishwanathan

Guru Prasanna Gopalakrishnan

Vinay S Raghuram

Bror Peterson

Rahul Dasgupta

Xiangxiang Fang

Santosh Bahaji Kulkarni

Dantong Liu

James C Nicholson

Jonathan M Cyphert

Michael Barry DeLong

Shaunak Joshi

Min Se Kim

Audrey Yazdanparast

Michael F Marlborough

Hongyi Fu

Jeffrey R Adams

Srikant Kuppa

Xiaohua Fang

Ashish Pasha Sheikh

Robert C Badea

Ashish Sheikh

Improving backscattering and, specifically, a physical Layer transmit mode for improving the Signal-to-Interference Ratio (SIR) of backscatter signals may be provided. A transmitter may determine a Backscatter Device (BKD) to send a transmission to for backscattering. The transmitter may determine a width of a puncture in the transmission. Next, the transmitter may transmit the transmission to the BKD. The transmitter may receive feedback from a receiver about decoding a backscattered signal generated using the transmission. The transmitter may adjust the width of the puncture for a subsequent transmission based on the feedback.

Physical layer transmit mode for improving signal-to-interference on backscatter message

In some aspects, the techniques described herein relate to a method including: determining a series of predetermined phases for wireless signals to be used in location calculations for a station device accessing a wireless access point; reflecting wireless signals from the wireless access point off of an intelligent reflecting surface to the station device; and controlling the intelligent reflecting surface such that a series of the wireless signals are reflected off of the intelligent reflecting surface with the predetermined phases.

Location accuracy via intelligent reflecting surfaces

A system and methods by which a reconfigurable intelligent surface device is dynamically configured to control the reflection of transmissions made between an access point and one or more client devices so as to protect the transmissions from being properly received by an unauthorized device. These methods may be used to maintain data confidentiality, particularly for remote workers. The positions of the access point and client devices are used to configure the reconfigurable intelligent surface device to reflect the transmissions inward and avoid/minimize leakage outside a physical space.

Traffic and user aware physical layer shielding for secure teleworker using reconfigurable intelligent surface device

Techniques herein facilitate dynamic configuration of a wireless local area network (WLAN) for large public venue (LPV) environments. In one example, a method may include providing an initial configuration for access points APs of a WLAN for an event at an LPV based on a profile for the event, a location of each AP for the venue, and anticipated demand at the APs; determining, for a particular time for the event, a distribution of wireless devices and channel support capabilities of the wireless devices different locations for the LPV; and providing an updated configuration for one or more APs at the one or more locations for the venue based on the distribution of the wireless devices and the channel support capabilities of the wireless devices determined for the particular time for the event at the LPV.

Dynamic wireless local area network configuration in large public venue environments

A method, computer system, and computer program product are provided for prioritizing network traffic. An indication is received at a network controller that an alarm is activated at a physical site. A request is received from a user device to join a network at the physical site that is under control of the network controller, wherein the request includes a flag indicating an identity of a user of the user device and a priority status of the user. In response to authenticating the identity of the user via an identity provider server, the user device is authorized to join the network. Based on verifying the priority status of the user using the flag and authentication via the identity provider server, network traffic for the user device is prioritized.

Prioritizing network traffic for emergency services

Methods and systems for distinguishing between radar signals and Wi-Fi signals are provided. When a set of electromagnetic signals are received, various tests are performed on the signals to determine if the signals are associated with radar pulses or if the signals are more likely to be associated with stray Wi-Fi signals or other non-radar interference. One such test relies on the relatively small variance of frequencies used by radar pulses when compared to the high variation of Wi-Fi signals. Another test relies on the relatively low peak to average power ratio of signals associated with radar pulses when compared to Wi-Fi signals. The tests described herein are an improvement on existing methods for distinguishing radar signals from Wi-Fi signals and result in less switching of Wi-Fi channels due to erroneously detected radar signals.

Systems and methods for reducing false radar detection

Legacy preamble puncturing for fine timing and frequency offset estimation may be provided. Within a user information field of a trigger frame, a legacy preamble puncturing pattern may be allocated to each of a plurality of client devices wherein each of the plurality of client devices is allocated with at least one respective corresponding non-overlapping sub-channel. Next, from each of the plurality of client devices on their respective corresponding non-overlapping sub-channel, a respective corresponding preamble may be received. Time and frequency synchronization may then be performed for each of the plurality of client devices based on their respective corresponding preamble.

Extremely high throughput trigger based (EHTTB) legacy preamble puncturing for fine timing and frequency offset estimation

A method to operate a multi-link wireless device. The method includes establishing at least a first multi-link device interface and a second multi-link device interface, exposing, via a virtual data port, the first multi-link device interface and the second multi-link device interface at a data processing layer of the wireless device, selecting one of the first multi-link device interface and the second multi-link device interface, as a selected multi-link device interface, based on performance information associated with a first radio and a second radio associated, respectively, with the first multi-link device interface and the second multi-link device interface, and wirelessly transmitting a packet from the wireless device by routing the packet through the selected multi-link device interface.

Multi-link operation for wireless local area network multi-link device

Staggered Multi-User (MU) uplink in an Ambient Power (AMP) Backscatter Device (BKD) group may be provided. A transmitter AP may determine to receive uplink data from an AMP BKD group and then transmit a session initialization message to a receiver AP instructing the receiver AP to receive the uplink data from the AMP BKD group. The transmitter AP may receive an initialization response from the receiver AP indicating the receiver AP will receive the uplink data. The transmitter may transmit an AMP BKD initialization signal to the AMP BKD group indicating to the AMP BKD group to perform scattering without collisions. The transmitter AP may then transmit an excitation transmission for the AMP BKD group to perform scattering.

Triggering staggered multi-user uplink in ambient power device group

Techniques for improved peer-to-peer communication are provided. A roaming peer-to-peer device may identify a new access point (AP) and initiate a transition to the new AP. Initiating transition can involve sending, to the new AP, the current peer-to-peer communication schedule for approval and/or negotiating a modified peer-to-peer communication schedule with the new AP. When the roaming peer-to-peer device and the new AP agree on the peer-to-peer communication schedule, the peer-to-peer device may notify its counterpart that it has roamed to the new AP and also notify the counterpart of any updates to the peer-to-peer communication schedule.

P2P continuity during a client roam

Techniques for beamforming from wireless stations (STAs) are disclosed. These techniques include identifying a plurality of STAs for a beamforming group, for transmission to a wireless access point (AP). The techniques further include receiving, at the AP, first data transmitted from each of the plurality of STAs in the beamforming group to the AP at least partially at the same time, wherein the transmitting the first data from each of the plurality of STAs results in constructive interference between the transmissions from the plurality of STAs to the AP, and wherein the same first data is received from each of the plurality of STAs in the beamforming group.

Coordinated beamforming from client devices

Granular guard interval tuning may be provided. A delay profile for a plurality of sub-bands in a serving channel may be created. Then delay spread information from at least one calibration helper device for the plurality of sub-bands in the serving channel may be received. Next, a delay spread matrix based on the delay profile, the delay spread information, and a location of the calibration helper devices may be created. The delay spread matrix may then be used to determine optimal Guard Intervals (GIs).

Granular guard interval tuning

The present disclosure is directed to simultaneous channel sounding on multiple MLO channels followed by determining phase and amplitude corrections based on channel impulse responses obtained on each MLO channel. The corrections are then used in subsequent extrapolation of channel sounding on one channel to another. In one aspect, a method includes transmitting, on each radio interface of a first multi-link device, a corresponding sounding probe to a second multi-link device; determining, by each radio interface of the first multi-link device, a corresponding channel impulse response based on the corresponding sound probe to yield a plurality of channel impulse responses; determining an offset between the plurality of channel impulse responses; and using the offset during a subsequent extrapolation of a sounding probe on one radio interface to a second radio interface of the first multi-link device.

Phase lock loop phase ambiguity mitigation for multi-link operation extrapolated sounding

Presented herein are infrastructure triggering techniques for secure Ultra-Wideband (UWB) ranging. In one example, a method may include providing UWB ranging parameters to a mobile device via a first radio communication, wherein the first radio communication is a non-UWB radio communication; and triggering the mobile device to perform UWB ranging with a UWB anchor, wherein the triggering is performed using a second radio communication. In another example, a method may include, obtaining, by a mobile device, UWB ranging parameters for a geographic area; obtaining a UWB ranging instruction for the geographic area; and performing UWB ranging with a target UWB anchor based on the UWB ranging parameters and the UWB ranging instruction.

Infrastructure triggering techniques to facilitate secure ultra-wideband (UWB) ranging

Presented herein are techniques for scheduling Ultra-Wideband (UWB) anchors and mobile devices for client ranging. A control device can determine respective ranging priorities for a plurality of mobile devices, which are each assigned to at least one UWB anchor. The control device can obtain at least one collision mapping identifying, for a respective pair of the mobile devices, a collision probability that a UWB signal associated with a ranging procedure involving a first mobile device of the respective pair will collide with a UWB signal associated with a ranging procedure involving a second mobile device of the respective pair. The control device can establish a ranging schedule for the mobile devices and UWB anchors based on the respective UWB ranging priorities and the collision mapping(s). The control device can send at least one command to cause UWB ranging procedures to be performed according to the ranging schedule.

Prioritized scheduling for UWB ranging

Growing community of inventors

Shaker Heights, OH, United States of America

Matthew Aaron Silverman