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公开(公告)号：US11202297B2
公开(公告)日：2021-12-14
申请号：US16146723
申请日：2018-09-28
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Christina Vlachou , Ioannis Pefkianakis , Kyu-Han Kim
Abstract: Systems and methods described herein provide a centralized solution for interference mitigation that focuses on efficient spectrum management. Wireless Access Points (APs) collect interference measurements for wireless channels and generate corresponding interferer airtime estimates. The APs also determine Packet Error Rates (PERs) for wireless client devices currently being served via the channels by the APs. The APs send the interferer airtime measurements and the PERs to a centralized controller. If an interferer airtime estimate and a PER for a particular channel satisfy predefined threshold conditions, the controller modifies an allocation of wireless bandwidth for an AP that is currently using the channel and sends a message to the AP indicating how the allocation has been modified.
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公开(公告)号：US10998988B2
公开(公告)日：2021-05-04
申请号：US16591341
申请日：2019-10-02
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Christina Vlachou , Kyu-Han Kim
Abstract: Examples include classifying high frequency radio signals. Some examples include receiving a fast Fourier transform (FFT) of a high frequency radio signal, determining a first signal strength at a first guard frequency bin, determining a second signal strength at a second guard frequency bin, and determining a third signal strength at a direct current carrier frequency bin. Examples also include classifying the high frequency radio signal based on the first signal strength, the second signal strength, and the third signal strength.
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公开(公告)号：US10608757B2
公开(公告)日：2020-03-31
申请号：US15718491
申请日：2017-09-28
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Christina Vlachou , Kyu-Han Kim
Abstract: Examples include classifying high frequency radio signals. Some examples include receiving a fast Fourier transform (FFT) of a high frequency radio signal, determining a first signal strength at a first guard frequency bin, determining a second signal strength at a second guard frequency bin, and determining a third signal strength at a direct current carrier frequency bin. Examples also include classifying the high frequency radio signal based on the first signal strength, the second signal strength, and the third signal strength.
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公开(公告)号：US20190097741A1
公开(公告)日：2019-03-28
申请号：US15718491
申请日：2017-09-28
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Christina Vlachou , Kyu-Han Kim
IPC: H04B17/318 , H04W24/08 , H04L12/26 , H04L27/26
Abstract: Examples include classifying high frequency radio signals. Some examples include receiving a fast Fourier transform (FFT) of a high frequency radio signal, determining a first signal strength at a first guard frequency bin, determining a second signal strength at a second guard frequency bin, and determining a third signal strength at a direct current carrier frequency bin. Examples also include classifying the high frequency radio signal based on the first signal strength, the second signal strength, and the third signal strength.
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公开(公告)号：US11181628B2
公开(公告)日：2021-11-23
申请号：US16176326
申请日：2018-10-31
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Sangki Yun , Kyu-Han Kim , Raghav Hampapur Venkatnarayan , Christina Vlachou
Abstract: Examples provide accurate localization of an object by using a network device. Examples include determining distances between transmitter and receiver antennas of a network device, transmitting, by the transmitter antenna, a wireless signal having a transmit power, receiving, by the receiver antennas, a reflected signal that reflects off of an object, receiving, by the receiver antennas, a static signal that does not reflect off of the object, and processing the static and reflected signals and determining the location of the object, based on the distances between the transmitter and the receiver antennas and the transmit power.
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Patent Agency Ranking
公开(公告)号：US20210099334A1
公开(公告)日：2021-04-01
申请号：US16589670
申请日：2019-10-01
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Christina Vlachou , Kyu-Han Kim
IPC: H04L29/06 , A63F13/211 , G02B27/01 , H04B7/0413 , G06T19/00 , H04L5/00
Abstract: Embodiments are directed to multi-user virtual reality over wireless networks. An embodiment of a storage medium includes instructions for receiving a request at a network device for a virtual reality (VR) operation, the VR operation to serve VR client devices utilizing a wireless communication network; obtaining statistics regarding the wireless communication network and the VR client devices, the statistics including data transmission rates and data transmission quality; exposing the statistics to a server to assist with optimization of the wireless communication network; and facilitating optimization of the wireless communication network for multi-user VR operation based at least in part on the statistics.
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公开(公告)号：US20190238856A1
公开(公告)日：2019-08-01
申请号：US15884857
申请日：2018-01-31
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Mallesham Dasari , Shruti Sanadhya , Christina Vlachou , Kyu-Han Kim
IPC: H04N19/154 , H04N19/91 , H04N19/61 , H04N19/184
CPC classification number: H04N19/154 , G06T7/00 , H04N17/004 , H04N19/146 , H04N19/159 , H04N19/184 , H04N19/61 , H04N19/91 , H04N21/41407 , H04N21/44008 , H04N21/44209 , H04N21/64723
Abstract: In some examples, a non-transitory machine-readable storage medium having stored thereon machine-readable instructions to cause a processing resource to determine a intra coded bitrate of a captured video, determine a stutter ratio of the captured video, and estimate a video quality of experience based on the intra coded bitrate and the stutter ratio of the captured video.
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公开(公告)号：US11076307B2
公开(公告)日：2021-07-27
申请号：US15962722
申请日：2018-04-25
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Christina Vlachou , Swetank Kumar Saha , Kyu-Han Kim
Abstract: A method of adjusting a communication link of a client device of a wireless local area network is described. The method includes monitoring two or more communication links between two or more client devices and a network device in a wireless local area network. The two or more client devices including a first client device and a second client device. The method also includes detecting a degradation in a first communication link between the first client device and the network device. The communication link degradation is not detected in a second communication link between the second client device and the network device. The method further includes determining the degradation in the first communication link is caused at least in part by interference from cellular network communications. The method includes adjusting one or more parameters of the first communication link without affecting the second communication link in response to determining the degradation is cause at least in part by the interference from the cellular network communications.
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公开(公告)号：US20210181332A1
公开(公告)日：2021-06-17
申请号：US16717952
申请日：2019-12-17
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Sangki Yun , Kyu-Han Kim , Christina Vlachou
Abstract: Embodiments are directed to passive multi-person location tracking utilizing signal polarization. An embodiment of a system includes multiple receivers, including a first receiver at a first location and a second receiver at a second location, each receiver including one or more receiver antennas to receive polarized radio signals; a transmitter located at a third location to transmit polarized radio signals, the transmitter including antennas for a first signal at a first polarization direction and a second signal at a second, different polarization direction; and a processing system to receive channel state information from each receiver, and to track a plurality of individuals utilizing the received channel state information, wherein the tracking of the plurality of individuals is based at least in part on analysis of a polarization parameter and a set of location parameters generated for each of multiple reflection paths based on the channel state information.
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公开(公告)号：US20210006348A1
公开(公告)日：2021-01-07
申请号：US16502936
申请日：2019-07-03
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Christina Vlachou , Kyu-Han Kim
Abstract: Embodiments are directed to interference-aware link-rate adaptation for wireless communication. An embodiment of a storage medium includes instructions to operations including receiving data regarding wireless signals received by an access point, the access point to provide Wi-Fi communication, the wireless signals being communicated in an unlicensed radio spectrum; performing spectral analysis of the received wireless signals to identify a channel of an LTE (Long-Term Evolution) signal; and upon determining that energy level of the LTE signal is below an energy detection (ED) level and that the channel is a primary Wi-Fi channel for the access point, adapting a link rate for the access point based on channel state information for the channel.
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