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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 12. Отображено 11.
14-09-2017 дата публикации

System and Method for Dynamic Provisioning of Wi-Fi Capacity in Large Venues Using C-RAN Architecture

Номер: US20170265104A1
Автор: Mustafa Arslan, Karthikeyan Sundaresan, Ramanujan Sheshadri, ARSLAN MUSTAFA, SUNDARESAN KARTHIKEYAN, SHESHADRI RAMANUJAN, Arslan Mustafa, Sundaresan Karthikeyan, Sheshadri Ramanujan
Принадлежит:

A computer-implemented method for dynamic provisioning of Wi-Fi capacity in areas using a centralized radio access network (C-RAN) architecture is presented. The computer-implemented method includes introducing a set of access points (APs) in a network for providing capacity required to serve a plurality of users accessing heterogeneous content, introducing a set of remote radio heads (RRHs) in the network acting as transmit/receive points, tracking traffic fluctuations, and adapting front-haul configurations at a granularity of epochs, where measurements from previous epochs serve as input to drive current epochs. 1. A computer-implemented method for dynamic provisioning of Wi-Fi capacity in areas using a centralized radio access network (C-RAN) architecture , the method comprising:introducing a set of access points (APs) in a network for providing capacity required to serve a plurality of users accessing heterogeneous content;introducing a set of remote radio heads (RRHs) in the network acting as transmit/receive points;tracking traffic fluctuations; andadapting front-haul configurations at a granularity of epochs, where measurements from previous epochs serve as input to drive current epochs.2. The method of claim 1 , wherein the front-haul configurations are adapted to serve user traffic demands in terms of capacity and requests for accessing the heterogeneous content claim 1 , such as unicast and broadcast content.3. The method of claim 2 , wherein the front-haul configurations are optimized to serve users of the plurality of users requesting the unicast and broadcast content simultaneously.4. The method of claim 1 , wherein the C-RAN is a distributed antenna system (DAS).5. The method of claim 1 , wherein each RRH of the set of RRHs requires a traffic demand for a current epoch based on weighted average of demands from the previous epochs.6. The method of claim 5 , wherein the traffic demand is an estimate of aggregate throughput requirements of one or more ...

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Номер записи: 1
07-11-2017 дата публикации

System and method for dynamic provisioning of Wi-Fi capacity in large venues using C-RAN architecture

Номер: US0009813944B2
Автор: Mustafa Arslan, Karthikeyan Sundaresan, Ramanujan Sheshadri, ARSLAN MUSTAFA, SUNDARESAN KARTHIKEYAN, SHESHADRI RAMANUJAN, Arslan Mustafa, Sundaresan Karthikeyan, Sheshadri Ramanujan
Принадлежит: NEC Corporation, NEC LAB AMERICA INC, NEC CORP, NEC Laboratories America, Inc.

A computer-implemented method for dynamic provisioning of Wi-Fi capacity in areas using a centralized radio access network (C-RAN) architecture is presented. The computer-implemented method includes introducing a set of access points (APs) in a network for providing capacity required to serve a plurality of users accessing heterogeneous content, introducing a set of remote radio heads (RRHs) in the network acting as transmit/receive points, tracking traffic fluctuations, and adapting front-haul configurations at a granularity of epochs, where measurements from previous epochs serve as input to drive current epochs.

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Номер записи: 2
31-01-2019 дата публикации

System and Method for Enabling Interference-awareness for LTE Operation in Unlicensed Spectrum

Номер: US20190036629A1
Автор: Eugene Chai, Karthikeyan Sundaresan, Mohammad Khojastepour, Ramanujan Sheshadri, Sampath Rangarajan
Принадлежит: NEC Laboratories America Inc

A computer-implemented method executed on a processor for employing an epoch-based approach to estimating interference in an unlicensed spectrum is presented. The method includes enabling communication between a long-term evolution (LTE) evolved node B (eNodeB) and a plurality of clients, detecting and measuring the interference in all existing non-overlapping channels, via the LTE eNodeB, caused by one or more hidden clients of the plurality of clients, collecting interference statistics from all of the plurality of clients across all different channels, and leveraging interference-awareness resulting in channel access performance improvement at a macro-time scale and a micro-time scale.

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Номер записи: 3
31-03-2022 дата публикации

UNMANNED AERIAL VEHICLE NETWORK

Номер: US20220103246A1
Автор: Chai Eugene, Rangarajan Sampath, Sheshadri Ramanujan, Sundaresan Karthikeyan
Принадлежит:

Systems and methods implementing a multi-unmanned aerial vehicle (UAV) wireless communication network are provided. The system includes application UAVs that wirelessly provide applications. The system includes relay UAVs that connect the application UAVs to a ground station. The ground station connects to a wireless backhaul network. Processor devices determine mobility for the application UAVs based on application-specific objectives. The processor devices also determine mobility for the relay UAVs based on forming and maintaining the wireless backhaul network. 1. A system for implementing a multi-unmanned aerial vehicle (UAV) wireless communication network , comprising:a plurality of application UAVs configured to wirelessly provide at least one application;a plurality of relay UAVs configured to connect the plurality of application UAVs to a ground station;the ground station configured to connect to a wireless backhaul network; and{'claim-text': ['determine mobility for the plurality of application UAVs based on application-specific objectives, and', 'determine mobility for the plurality of relay UAVs based on forming and maintaining the wireless backhaul network.'], '#text': 'at least one processor device operatively coupled to at least one memory device, the at least one processor device being configured to:'}2. The system of claim 1 , wherein the at least one processor device is further configured to:implement a process for determining optimal position, yaw and traffic routing across the plurality of relay UAVs and the plurality of application UAVs.3. The system of claim 1 , wherein the at least one processor device is further configured to:determine mobility for the plurality of relay UAVs based on a two-step optimization across radial and angular deployment directions.4. The system of claim 1 , wherein the at least one processor device is further configured to:{'claim-text': ['contracting at least one of the plurality of relay UAVs with abundant radio ...

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Номер записи: 4
01-12-2022 дата публикации

Visual and rf sensor fusion for multi-agent tracking

Номер: WO2022251605A1
Автор: Karthikeyan Sundaresan, Mallesham Dasari, Ramanujan Sheshadri
Принадлежит: NEC Laboratories America, Inc.

Methods and systems for determining a device position include determining (704) a first position estimate using radio-based range information. A second position estimate is determined (708) using visual odometry information. The first position estimate and the second position estimate are fused (710) based on radio environmental conditions and visual environmental conditions to determine a final position estimate. Resources are deployed (606) based on the final position estimate.

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Номер записи: 5
28-09-2023 дата публикации

Realizing enterprise-grade localization using wifi 802.11mc fine tune measurement

Номер: WO2023183746A1
Автор: Karthikeyan Sundaresan, Ramanujan Sheshadri, Shivang AGGARWAL
Принадлежит: NEC Laboratories America, Inc.

A method for assessing viability of a WiFi fine tune measurement (FTM) based ranging protocol for enterprise-grade localization with heterogeneity across operational parameters is presented. The method includes enabling a plurality of access points to range with a plurality mobile devices handled by a plurality of users within an enterprise environment, tracking a mobile device of the plurality of mobile devices using onboard sensors as the mobile device travels within the enterprise environment, measuring a plurality of ranges with at least three access points of the plurality of access points at various points along a trajectory, and combining information related to the plurality of ranges and the trajectory to predict a range offset of the mobile device such that the mobile device itself self-calibrates all its range offsets on-demand.

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Номер записи: 6
26-10-2023 дата публикации

REALIZING ENTERPRISE-GRADE LOCALIZATION USING WIFI 802.11mc FINE TUNE MEASUREMENT

Номер: US20230345207A1
Автор: Karthikeyan Sundaresan, Ramanujan Sheshadri, Shivang AGGARWAL
Принадлежит: NEC Laboratories America Inc

A method for assessing viability of a WiFi fine tune measurement (FTM) based ranging protocol for enterprise-grade localization with heterogeneity across operational parameters is presented. The method includes enabling a plurality of access points to range with a plurality mobile devices handled by a plurality of users within an enterprise environment, tracking a mobile device of the plurality of mobile devices using onboard sensors as the mobile device travels within the enterprise environment, measuring a plurality of ranges with at least three access points of the plurality of access points at various points along a trajectory, and combining information related to the plurality of ranges and the trajectory to predict a range offset of the mobile device such that the mobile device itself self-calibrates all its range offsets on-demand.

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Номер записи: 7
27-10-2022 дата публикации

Device tracking with radio ranging and sensor functions

Номер: WO2022225891A1
Автор: Karthikeyan Sundaresan, Md. Shaifur Rahman, Ramanujan Sheshadri
Принадлежит: NEC Laboratories America, Inc.

Methods and systems for identifying device positions include measuring (206) radio signal strength information between devices. Inertial information is measured (208) for the devices. The radio signal strength information and the inertial information are fused (306) to determine relative locations between the devices. The relative locations are oriented (308) to a fixed anchor node. Elevation is estimated (310) for the plurality of devices using pressure sensor information.

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Номер записи: 8
04-06-2024 дата публикации

Visual and RF sensor fusion for multi-agent tracking

Номер: US12000945B2
Автор: Karthikeyan Sundaresan, Mallesham Dasari, Ramanujan Sheshadri
Принадлежит: NEC Corp

Methods and systems for determining a device position include determining a first position estimate using radio-based range information. A second position estimate is determined using visual odometry information. The first position estimate and the second position estimate are fused based on radio environmental conditions and visual environmental conditions to determine a final position estimate. Resources are deployed based on the final position estimate.

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Номер записи: 9
26-01-2023 дата публикации

Simultaneous localization and synchronization across multiple antennas

Номер: US20230026160A1
Автор: Md. Shaifur Rahman, Mohammad Khojastepour, Ramanujan Sheshadri
Принадлежит: NEC Laboratories America Inc

A computer-implemented method for identifying a device position is provided. The method includes synchronizing a clock between a first device and a second device to obtain a synchronized clock. The method further includes measuring a round-trip time of flight between an antenna from the first device and an antenna from the second device based on the synchronized clock. The method also includes estimating a relative angular position of the second device with respect to the first device based on the round-trip time of flight. The method additionally includes estimating a distance between the first device and the second device based on estimated round-trip time of flight. The method further includes estimating, by the first device, a position of the second device with respect to a known coordinate based on the relative angular position and the distance.

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Номер записи: 10
21-09-2017 дата публикации

System and method for dynamic provisioning of wi-fi capacity in large venues using c-ran architecture

Номер: WO2017160365A1
Автор: Karthikeyan Sundaresan, Mustafa Arslan, Ramanujan Sheshadri
Принадлежит: NEC Laboratories America, Inc.

A computer-implemented method for dynamic provisioning of Wi-Fi capacity in areas using a centralized radio access network (C-RAN) architecture is presented. The computer-implemented method includes introducing a set of access points (APs) in a network for providing capacity required to serve a plurality of users accessing heterogeneous content, introducing a set of remote radio heads (RRHs) in the network acting as transmit/receive points, tracking traffic fluctuations, and adapting front-haul configurations at a granularity of epochs, where measurements from previous epochs serve as input to drive current epochs.

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Номер записи: 11