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公开(公告)号：US09665121B2
公开(公告)日：2017-05-30
申请号：US14566951
申请日：2014-12-11
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： James Aweya
Abstract: This invention relates to methods and devices for time synchronization. The invention has particular application in the alignment of slave clocks to a master clock and in dealing with packet delay variation and dynamic asymmetries in the network links between them. In embodiments of the invention, the slave clock uses the peer link delay and residence times measured by peer-to-peer transparent clocks to compensate for clock synchronization errors that arise due to variability in message transfer delays. Embodiments provide a simple linear approximation technique and a Kalman filter-based technique for estimating offset and skew of the slave clock.
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公开(公告)号：US09651271B2
公开(公告)日：2017-05-16
申请号：US14104425
申请日：2013-12-12
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： Fabrice Saffre , Mark Shackleton , Hanno Hildmann , Sébastien Matthieu René Nicolas
IPC: F24F11/00
CPC classification number: F24F11/0009 , F24F11/30 , F24F11/46
Abstract: This invention relates to methods and systems for controlling consumption, particularly power consumption, more particularly by appliances in a building, and is generally suitable for integration with building management systems. Embodiments of the invention provide methods and systems which probabilistically limit the aggregated power load of a plurality of climate control appliances in a building to a selected value, while seeking to minimize the deviation from target environmental conditions within the building. The embodiments of the invention propose distributed decision-making by individual devices based on projected deviation from the target conditions after a period of activity or inactivity.
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公开(公告)号：US20160204956A1
公开(公告)日：2016-07-14
申请号：US14916829
申请日：2014-09-04
Applicant: BRITISH TELECOMMUNICATIONS PLC
Inventor： Trevor Philip Linney , Philip Antony Everett
IPC: H04L12/28
CPC classification number: H04L12/2858 , H04L12/2869
Abstract: An access network comprises a plurality of access nodes (DSLAMs), a plurality of network access servers (CP BRASs) and an ANCP relay. The access network control relay component relays data between an access node and a plurality of network access servers and includes one or more interfaces and associated functionality in an ANCP listener component for enabling a connection between the relay component and the access node, for transmitting data and/or messages thereover, and an interface (ANCP Agents) for a connection to be made with each of the plurality of network access servers (via ANCP listeners contained within the BRASs) for transmitting ANCP messages thereover; and a mapping database for storing mapping data to determine to which network access server a message should be transmitted from the relay component, together with a CP authentication database and a workflow processing component for controlling operation of components within the ANCP relay.
Abstract translation: 接入网络包括多个接入节点（DSLAM），多个网络接入服务器（CP BRAS）和ANCP中继。 接入网络控制中继组件在接入节点和多个网络接入服务器之间中继数据，并且在ANCP监听器组件中包括一个或多个接口和相关联的功能，用于实现中继组件与接入节点之间的连接，用于发送数据和 和/或其上的消息，以及用于通过多个网络接入服务器中的每一个（经由包含在BRAS内的ANCP监听器）进行连接的接口（ANCP Agents），用于在其上发送ANCP消息; 以及映射数据库，用于存储映射数据，以及用于控制ANCP中继器内的组件的操作的CP认证数据库和工作流处理组件，确定哪个网络接入服务器应该从中继组件发送消息。
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24.发明申请公开(公告)号：US20160170440A1
公开(公告)日：2016-06-16
申请号：US14566990
申请日：2014-12-11
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： James Aweya
Abstract: This invention relates to methods and devices for time transfer. The invention has particular application in the alignment of slave clocks to a master clock and dealing with packet delay variations. In embodiments of the invention, the slave clock uses the residence times measured by end-to-end transparent clocks to compensate for clock synchronization errors that arise due to variability in message transfer delays. Embodiments provide a simple linear approximation technique and a Kalman filter-based technique for estimating offset and skew of the slave clock.
Abstract translation: 本发明涉及时间传递的方法和装置。 本发明特别适用于将从时钟对准主时钟并处理分组延迟变化。 在本发明的实施例中，从时钟使用由端对端透明时钟测量的停留时间来补偿由于消息传送延迟的变化而产生的时钟同步误差。 实施例提供了简单的线性近似技术和用于估计从时钟的偏移和偏移的基于卡尔曼滤波器的技术。
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25.发明申请公开(公告)号：US20160170439A1
公开(公告)日：2016-06-16
申请号：US14566951
申请日：2014-12-11
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： James Aweya
Abstract: This invention relates to methods and devices for time synchronization. The invention has particular application in the alignment of slave clocks to a master clock and in dealing with packet delay variation and dynamic asymmetries in the network links between them. In embodiments of the invention, the slave clock uses the peer link delay and residence times measured by peer-to-peer transparent clocks to compensate for clock synchronization errors that arise due to variability in message transfer delays. Embodiments provide a simple linear approximation technique and a Kalman filter-based technique for estimating offset and skew of the slave clock.
Abstract translation: 本发明涉及时间同步的方法和装置。 本发明在从属时钟对主时钟和处理它们之间的网络链路中的分组延迟变化和动态不对称性方面具有特别的应用。 在本发明的实施例中，从时钟使用由对等透明时钟测量的对等链路延迟和驻留时间来补偿由于消息传送延迟的变化而产生的时钟同步错误。 实施例提供了简单的线性近似技术和用于估计从时钟的偏移和偏移的基于卡尔曼滤波器的技术。
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Patent Agency Ranking
公开(公告)号：US20160069676A1
公开(公告)日：2016-03-10
申请号：US14477191
申请日：2014-09-04
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： Nayef Alsindi , James Aweya , Zdenek Chaloupka
CPC classification number: G01S19/00 , G01S5/0215 , G01S19/22
Abstract: This invention relates to methods and devices for bias estimation and correction, particularly for time-of-arrival (TOA) based wireless geolocation systems. Multipath and non-line-of-sight (NLOS) biases can cause distance estimation errors in the range of tens-hundreds of meters and is particularly problematic in urban and indoor environments. The behaviour of the biases dynamically changes depending on the clutter and/or obstructions between the base station and the mobile device. Aspects of the present invention provide practical real-time bias estimation and correction techniques for TOA-based systems and are based on inferring and estimating the biases from dynamic time differential measurements. The techniques can operate in real-time and involve simple calculations.
Abstract translation: 本发明涉及用于偏差估计和校正的方法和装置，特别是用于基于到达时间（TOA）的无线地理定位系统。 多路径和非视距（NLOS）偏差可能导致距离估计误差在数百米范围内，并且在城市和室内环境中尤其成问题。 偏移的动作根据基站和移动设备之间的杂波和/或障碍物动态地变化。 本发明的各方面为基于TOA的系统提供实用的实时偏差估计和校正技术，并且基于从动态时间差分测量推断和估计偏差。 这些技术可以实时操作，并且涉及简单的计算。
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公开(公告)号：US20190207695A1
公开(公告)日：2019-07-04
申请号：US15858117
申请日：2017-12-29
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： James Aweya
IPC: H04J3/06
CPC classification number: H04J3/0667 , H04J3/0676
Abstract: This invention relates to methods and systems for estimating offset, skew and drift. Embodiments of the invention relate to methods and systems which allow these relationships between a slave clock and a master clock to be estimated based on the exchange of timestamped messages between the master and the slave. Further embodiments of the invention set out uses of these estimates to synchronize a local clock in a slave to a master and to steer the slave clock to stay aligned to the master clock when the master clock is temporarily unavailable or the communication path between slave and master is temporarily unavailable.
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公开(公告)号：US20190186770A1
公开(公告)日：2019-06-20
申请号：US15841463
申请日：2017-12-14
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： Fabrice Saffre , Kin Poon , Dymitr Ruta
Abstract: This invention relates to methods and systems for controlling appliances, particularly climate control appliances such as air conditioning units used in buildings. Embodiments of the invention provide methods and systems which provide a framework of semi-autonomous sensors and actuators which can achieve climate control without the need for centralised or explicit coordination. In certain embodiments, the climate control system is capable of identifying suitable pairings of sensors and actuators and taking into account actions of other actuators. The embodiments have particular application in buildings where large numbers of individual sensors and actuators are deployed in an ad-hoc or unplanned manner over time, to but can communicate with each other. The embodiments of the invention can provide improved efficiency, reduced infrastructure costs, improved flexibility and can be deployed across multiple sites.
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公开(公告)号：US10327165B2
公开(公告)日：2019-06-18
申请号：US15386243
申请日：2016-12-21
Applicant: Khalifa University of Science, Technology and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： Beum Seuk Lee , Dymitr Ruta , Kin Poon , Okung Ntofon , Sid Shakya , Gilbert Owusu
IPC: H04L12/24 , H04L12/26 , H04W24/08 , G06F16/904
Abstract: This invention relates to methods and systems for monitoring mobile service quality in a mobile network and also for determining parts of a mobile network which need expansion or upgrade. Embodiments of the invention monitor the market impact and/or service quality, and determine an expansion ranking. The market impact, service quality and/or expansion ranking may view the network from a plurality of perspectives, including a location perspective, an historical time perspective, a future time perspective and/or a network element type perspective. The results of the monitoring and determining can be acted on by predetermined rules and/or actions to derive a list of prioritized expansion tasks for the network.
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公开(公告)号：US10215837B1
公开(公告)日：2019-02-26
申请号：US15852086
申请日：2017-12-22
Applicant: Khalifa University of Science, Technology, and Research , British Telecommunications plc , Emirates Telecommunications Corporation
Inventor： Delfin Y. Montuno , James Aweya
Abstract: This invention relates to methods and systems for localization. It is particularly concerned with localization techniques based on time difference of arrival for wireless devices. Embodiments of the invention relate to techniques in which a transmitter transmits periodic distinguishable signals which are relayed upon receipt by the client whose location is sought in a form distinguishable from that of the transmitter. Signals from both the transmitter and the client are received by at least three signal receivers which generate a time difference of arrival based on the difference taken for a signal to reach the receiver directly and via the client. Further embodiments of the invention provide a phase detector in the receivers to determine the time difference of arrival between the signals.
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