Method and system for realizing a geofence scenario with an NGSI-system

    公开(公告)号:US10433104B2

    公开(公告)日:2019-10-01

    申请号:US15509869

    申请日:2014-09-11

    Abstract: A method for realizing a geofence scenario with a system according to at least the OMA NGSI 9/10 standard, includes providing, by the NGSI-system, an NGSI subscription operation for subscribing NGSI-entities for notifications, Geofence scenario are defined by at least a geofence object set including mobile objects, a geofencing set including one or more geofences, and one or more geofence predicates for mathematically combining a geofence object set and a geofencing set, so as to provide a result including at least the values true and false. For subscribing to geofence event notification according to the NGSI subscription protocol, the geofence scenario is specified as NGSI operational scope for the NGSI subscription, and/or the geofence scenario is included as one or more attributes of a NGSI entity for the NGSI subscription.

    Dynamic TCP proxy selection for acceleration of short network flows

    公开(公告)号:US10320642B2

    公开(公告)日:2019-06-11

    申请号:US15468416

    申请日:2017-03-24

    Abstract: A method for transmitting, over a transport network, data belonging to a data flow includes creating a proxy network including a plurality of transport network proxies; defining a plurality of proxy pairs; defining a plurality of proxy pair links; determining, for each proxy pair link, a round trip time (RTT) of the respective proxy pair link; determining, using the determined RTTs of the plurality of proxy pair links, a list of one or more preferred paths for each proxy pair, each preferred path connecting, via one or more of the plurality of proxy pair links, one proxy of the respective proxy pair to the other proxy of the respective proxy pair; and transmitting, from an ingress proxy to an egress proxy, the data belonging to the data flow over a proxy pair path selected from the list of preferred proxy pair paths.

    METHOD FOR PROVIDING M2M DATA
    4.
    发明申请

    公开(公告)号:US20180124810A1

    公开(公告)日:2018-05-03

    申请号:US15854845

    申请日:2017-12-27

    Abstract: A method for providing M2M data items according to M2M data subscriptions retrieved from an M2M frontend (FE) by an M2M backend (BE) to one or more M2M applications includes representing the data items by a set of parameters including a required update frequency and a weight representing an importance of the data item; determining a schedule for retrieving data items from the FE by the BE based on the weights of the data items; determining that an actual period required to update each of one or more respective data items is larger than a required period corresponding to the required update frequency and adding a penalty value to the weight of each of the respective one or more data items to provide updated weights; and modifying the schedule based on the updated weights.

    METHOD FOR PROVIDING M2M DATA
    5.
    发明申请

    公开(公告)号:US20170359832A1

    公开(公告)日:2017-12-14

    申请号:US15526343

    申请日:2014-11-12

    Abstract: A method for providing M2M data includes parameterizing M2M data subscriptions by parameters representing a data item to be subscribed, a required period, and a weight; determining, for all of the M2M data subscriptions, a schedule for retrieving data from a front end based on the importance of the data items such that when the actual period with which data updates for a data item can be provided is larger than the required period for the data item a penalty value is added to the weight; modifying the schedule based on the updated weights for retrieving data for the data items such that an overall penalty is minimized and/or an overall actuality of the cached data is maximized; and retrieving data items from the front end and caching the retrieved data from the front end by a back end.

    Method for performing distributed geographic event processing and geographic event processing system

    公开(公告)号:US09794743B2

    公开(公告)日:2017-10-17

    申请号:US14913693

    申请日:2013-10-24

    Inventor: Tobias Jacobs

    Abstract: A method for performing distributed geographic event processing includes: defining a geographical state system for a universe of locations that includes a model specifying a state transition function and a global aggregation function; providing a local state system for a subset of the universe of locations being defined as a single-machine implementation of the geographical state system; providing a local aggregation function being defined as an implementation of the global aggregation function of the geographical state system; and creating, via a processor, distributed scalable deployments that implement the geographical state system by dividing the universe of locations geographically among different computational nodes and by instantiating on each of the computational nodes an instance of the local state system and the local aggregation function conforming to the subset of the universe of locations assigned to the respective computational node.

    DYNAMIC TCP PROXY SELECTION FOR ACCELERATION OF SHORT NETWORK FLOWS

    公开(公告)号:US20180278506A1

    公开(公告)日:2018-09-27

    申请号:US15468416

    申请日:2017-03-24

    CPC classification number: H04L43/0864 H04L45/122 H04L45/24 H04L47/00 H04L69/14

    Abstract: A method for transmitting, over a transport network, data belonging to a data flow includes creating a proxy network including a plurality of transport network proxies; defining a plurality of proxy pairs; defining a plurality of proxy pair links; determining, for each proxy pair link, a round trip time (RTT) of the respective proxy pair link; determining, using the determined RTTs of the plurality of proxy pair links, a list of one or more preferred paths for each proxy pair, each preferred path connecting, via one or more of the plurality of proxy pair links, one proxy of the respective proxy pair to the other proxy of the respective proxy pair; and transmitting, from an ingress proxy to an egress proxy, the data belonging to the data flow over a proxy pair path selected from the list of preferred proxy pair paths.

    Method for providing M2M data
    8.
    发明授权

    公开(公告)号:US09907087B2

    公开(公告)日:2018-02-27

    申请号:US15526343

    申请日:2014-11-12

    Abstract: A method for providing M2M data includes parameterizing M2M data subscriptions by parameters representing a data item to be subscribed, a required period, and a weight; determining, for all of the M2M data subscriptions, a schedule for retrieving data from a front end based on the importance of the data items such that when the actual period with which data updates for a data item can be provided is larger than the required period for the data item a penalty value is added to the weight; modifying the schedule based on the updated weights for retrieving data for the data items such that an overall penalty is minimized and/or an overall actuality of the cached data is maximized; and retrieving data items from the front end and caching the retrieved data from the front end by a back end.

    METHOD AND SYSTEM FOR REALIZING A GEOFENCE SCENARIO WITH AN NGSI-SYSTEM

    公开(公告)号:US20190090084A1

    公开(公告)日:2019-03-21

    申请号:US15509869

    申请日:2014-09-11

    CPC classification number: H04W4/021 G01S1/00 G01S5/02 H04L69/08 H04W4/12 H04W68/12

    Abstract: A method for realizing a geofence scenario with a system according to at least the OMA NGSI 9/10 standard, includes providing, by the NGSI-system, an NGSI subscription operation for subscribing NGSI-entities for notifications. Geofence scenario are defined by at least a geofence object set including mobile objects, a geofencing set including one or more geofences, and one or more geofence predicates for mathematically combining a geofence object set and a geofencing set, so as to provide a result including at least the values true and false. For subscribing to geofence event notification according to the NGSI subscription protocol, the geofence scenario is specified as NGSI operational scope for the NGSI subscription, and/or the geofence scenario is included as one or more attributes of a NGSI entity for the NGSI subscription.

    Method and computer system for detecting crowds in a location tracking system
    10.
    发明授权
    Method and computer system for detecting crowds in a location tracking system 有权
    用于在位置跟踪系统中检测人群的方法和计算机系统

    公开(公告)号:US09210542B2

    公开(公告)日:2015-12-08

    申请号:US14100098

    申请日:2013-12-09

    CPC classification number: H04W4/02 G01S5/02

    Abstract: A method and computer system for detecting crowds in a location tracking system utilizes a grid and the pigeonhole principle to minimize an amount of hardware, memory and/or processing capability required in the location tracking system. In particular, an amount of storage required to determine whether a location update has resulted in a crowd grows only linearly, rather than quadratically, with the number of objects being tracked because a number of active grid points will be, at most, four times the number of objects being tracked. By determining whether an individual active grid point is within a crowd area, the computational time required for detecting a crowd within this crowd area is independent from the total number of objects being tracked.

    Abstract translation: 用于在位置跟踪系统中检测人群的方法和计算机系统利用网格和鸽子原理来最小化在位置跟踪系统中所需的硬件,存储器和/或处理能力的量。 特别地,确定位置更新是否已经导致人群仅仅是线性地增长而不是以二次方式增长的存储量,其中跟踪对象的数量是因为多个活动网格点将是至多四倍的 正在跟踪的对象数量。 通过确定单个活动网格点是否在人群区域内,在该人群区域内检测人群所需的计算时间与被追踪对象的总数无关。

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