Patents by Inventor Yi-Zhi Yao

Yi-Zhi Yao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11784894
    Abstract: Systems, methods, apparatuses, and computer program products for virtualized network function (VNF) component (VNFC) level performance management are provided. One method includes collecting virtualized resources measurements, identifying virtualized network function components that the virtualized resources measurements belong to, and associating the collected virtualized resources measurements with an application function (MF).
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 10, 2023
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Anatoly Andrianov, Yi Zhi Yao
  • Publication number: 20210288889
    Abstract: Systems, methods, apparatuses, and computer program products for virtualized network function (VNF) component (VNFC) level performance management are provided. One method includes collecting virtualized resources measurements, identifying virtualized network function components that the virtualized resources measurements belong to, and associating the collected virtualized resources measurements with an application function (MF).
    Type: Application
    Filed: August 18, 2016
    Publication date: September 16, 2021
    Inventors: Anatoly ANDRIANOV, Yi Zhi YAO
  • Patent number: 11018944
    Abstract: A method and apparatus may include transmitting a scaling request. The scaling request comprises a request for virtualized network function expansion or virtualized network function contraction. The scaling request is transmitted to a second network node. A first domain is directed to application level details. A second domain is directed to virtualization level details. The scaling request comprises: (1) a relative target capacity that is generic to both the first domain and the second domain, (2) an absolute target capacity that is specific to the first domain, or (3) a relative target capacity that is specific to virtualized network function level targets. The method may also include receiving a notification that a virtualization network function has been updated based on the transmitted scaling request.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: May 25, 2021
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Anatoly Andrianov, Yi Zhi Yao, Gyula Bodog
  • Patent number: 10728953
    Abstract: There are provided measures for inactivity timer evaluation. Such measures exemplarily comprise monitoring a communication related state, determining, upon a first state change indicative of a start of a communication, a duration amount of a period between said first state change and a preceding second state change indicative of an end of a preceding communication, and adjusting a control value based on a distribution of a plurality of determined duration amounts.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: July 28, 2020
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Martin Kollar, Yi Zhi Yao
  • Patent number: 10548077
    Abstract: A method of energy saving is applied to a mobile communications network comprising at least two radio access technology systems (102; 104) having a plurality of base stations (108-118). The method comprises the steps of: assigning (136a; 136b) respective priorities to the radio access technology systems; and an energy saving server (136a; 136b) instructing, on the basis of the priorities, a selected radio access technology system to reduce the operational state cells in a group of cells. This reduction occurs if the selected radio access technology system and/or another radio access technology system is able to maintain service to served mobile terminals.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: January 28, 2020
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Clemens Suerbaum, Yi Zhi Yao
  • Patent number: 10425851
    Abstract: Various communication systems may benefit from methods, apparatuses, and systems for data collection. For example, wireless communication systems of the third generation partnership project (3GPP) may benefit from data collection in network management layer coverage and capacity optimization. For example, a method may include sending performance measurement job activation indicating that minimization of drive test data is to be collected (in an alternative, the job can be configured to indicate that non-MDT data is to be collected). The method may also include receiving performance measurements in response to the job activation.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: September 24, 2019
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Anatoly Andrianov, Yi Zhi Yao
  • Publication number: 20190268966
    Abstract: There are provided measures for inactivity timer evaluation. Such measures exemplarily comprise monitoring a communication related state, determining, upon a first state change indicative of a start of a communication, a duration amount of a period between said first state change and a preceding second state change indicative of an end of a preceding communication, and adjusting a control value based on a distribution of a plurality of determined duration amounts.
    Type: Application
    Filed: August 13, 2015
    Publication date: August 29, 2019
    Applicant: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Martin KOLLAR, Yi Zhi YAO
  • Publication number: 20190238404
    Abstract: Systems, methods, apparatuses, and computer program products for coordinated scheduling of network function virtualization infrastructure (NFVI) maintenance are provided. One method includes receiving, by a network function virtualization entity, a request for scheduled maintenance of a network function virtualization infrastructure (NFVI). The method may also include determining whether one or more resources required for the maintenance of the NFVI are reserved, and sending an approval or rejection of the request for maintenance based on the determination of whether the resources are reserved.
    Type: Application
    Filed: May 10, 2016
    Publication date: August 1, 2019
    Inventors: Yi Zhi YAO, Anatoly ANDRIANOV, Gyula BODOG
  • Patent number: 10305767
    Abstract: Systems, methods, apparatuses, and computer program products for packet delay measurement are provided. One method may include sending, by a network node, a grant in uplink to a user equipment that previously indicated a need for data transmission for quality of service (QoS) class identifier (QCI) services. The method may then include storing a time of the uplink grant to the user equipment, and measuring a time point when a last part of a packet data convergence protocol (PDCP) serving data unit (SDU) related to QCI services has been confirmed by sending an acknowledgement to the user equipment.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 28, 2019
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Martin Kollar, Yi Zhi Yao, Malgorzata Tomala
  • Patent number: 10070350
    Abstract: A method including receiving a message at a first cell including at least one of: state information for the first cell; and state information for any neighbouring cells of the first cell; and determining a neighbouring relationship between the first cell and any neighbouring cells.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: September 4, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Yi Zhi Yao, Bernhard Wegmann
  • Publication number: 20180241630
    Abstract: A method and apparatus may include transmitting a scaling request. The scaling request comprises a request for virtualized network function expansion or virtualized network function contraction. The scaling request is transmitted to a second network node. A first domain is directed to application level details. A second domain is directed to virtualization level details. The scaling request comprises: (1) a relative target capacity that is generic to both the first domain and the second domain, (2) an absolute target capacity that is specific to the first domain, or (3) a relative target capacity that is specific to virtualized network function level targets. The method may also include receiving a notification that a virtualization network function has been updated based on the transmitted scaling request.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 23, 2018
    Inventors: Anatoly ANDRIANOV, Yi Zhi YAO, Gyula BODOG
  • Publication number: 20180139636
    Abstract: Methods, apparatuses, and computer program products for measuring throughput as a measure of performance and/or quality of service are provided. One method comprises, over an observation period for at least one of an uplink direction and a downlink direction, measuring an amount of padding bits in each protocol data unit (PDU) that is successfully transmitted in the said direction and that carries data relevant to a given throughput measure. The method may also comprise transforming the measured amounts of padding bits to the time domain and summing the transformed amounts of padding in the time domain. The method may also comprise utilizing the summed amount of padding in the time domain to account for small data transmissions in a calculation for the given throughput measure.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 17, 2018
    Inventors: Martin Kollar, Yi Zhi Yao, Malgorzata Tomala
  • Patent number: 9967763
    Abstract: There are provided measures for evaluation of throughput of carrier aggregated user equipments. Such measures exemplarily include determining, per communication endpoint implementing carrier aggregation aggregating one primary connection and at least one secondary connection, a transmission volume with at least one activated secondary connection, determining, per communication endpoint implementing carrier aggregation aggregating one primary connection and at least one secondary connection, a time with transmission data in a transmission buffer and at least one activated secondary connection, and obtaining, per communication endpoint, a transmission throughput with at least one activated secondary connection, based on said transmission volume and said time.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 8, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Martin Kollar, Yi Zhi Yao, Malgorzata Tomala
  • Patent number: 9894571
    Abstract: Methods, apparatus and computer program products are disclosed for enhancing mobility robustness optimization in self optimizing networks. Neighbor relation information indicating relations between a handover source cell and candidate handover target cell(s), each including a first counter indicating events of an unsuccessful handover of a user equipment from the handover source cell to one candidate handover target cell, and a second counter indicating events of connection re-establishment attempt of the user equipment to the candidate handover target cell after an unsuccessful handover to another cell. A first candidate handover target cell to which handover of the user equipment was unsuccessful and a second candidate handover target cell to which the user equipment has re-established a connection, out of the candidate handover target cells, are determined.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: February 13, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Bernhard Wegmann, Ingo Viering, Richard Waldhauser, Krzysztof Kordybach, Yi Zhi Yao
  • Patent number: 9844024
    Abstract: When the operator of a mobile communication system applies one of: “dynamic Tracking Area List” or “smart paging” for more efficient paging, the “real” size of the Tracking Area, i. e., the number of cells over which a S1AP-paging is broadcasted on average, becomes difficult to calculate in real time; A method of determining tracking area size information is therefore proposed comprising: obtaining the average number of paging records per cell, and dividing it by average number of RRC-Connection-Setup, for terminated calls, per cell; the result is proportional to the real TA size; the obtained value is proposed as a new KPI, Key Performance Indicator.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: December 12, 2017
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Martin Kollar, Fan Teng, Yi Zhi Yao
  • Publication number: 20170346676
    Abstract: Correlation of information related to network operations may be useful in many communication systems. For example, certain wireless communication networks may benefit from alarm correlation in network function virtualization environments. A method can include correlating alarms within a lower layer of a network function virtualization environment. The method can also include forwarding at least one of the correlated alarms to an entity managing an upper layer of the network function virtualization environment for further correlation with upper layer alarms.
    Type: Application
    Filed: December 12, 2014
    Publication date: November 30, 2017
    Inventors: Anatoly ANDRIANOV, Yi Zhi YAO
  • Publication number: 20170181121
    Abstract: When the operator of a mobile communication system applies one of: “dynamic Tracking Area List” or “smart paging” for more efficient paging, the “real” size of the Tracking Area, i. e., the number of cells over which a S1AP-paging is broadcasted on average, becomes difficult to calculate in real time; A method of determining tracking area size information is therefore proposed comprising: obtaining the average number of paging records per cell, and dividing it by average number of RRC-Connection-Setup, for terminated calls, per cell; the result is proportional to the real TA size; the obtained value is proposed as a new KPI, Key Performance Indicator.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 22, 2017
    Inventors: Martin KOLLAR, Fan TENG, Yi Zhi YAO
  • Publication number: 20170034025
    Abstract: Systems, methods, apparatuses, and computer program products for packet delay measurement are provided. One method may include sending, by a network node, a grant in uplink to a user equipment that previously indicated a need for data transmission for quality of service (QoS) class identifier (QCI) services. The method may then include storing a time of the uplink grant to the user equipment, and measuring a time point when a last part of a packet data convergence protocol (PDCP) serving data unit (SDU) related to QCI services has been confirmed by sending an acknowledgement to the user equipment.
    Type: Application
    Filed: July 20, 2016
    Publication date: February 2, 2017
    Inventors: Martin KOLLAR, Yi Zhi YAO, Malgorzata GIBALA
  • Publication number: 20160205596
    Abstract: A method including receiving a message at a first cell including at least one of: state information for the first cell; and state information for any neighbouring cells of the first cell; and determining a neighbouring relationship between the first cell and any neighbouring cells.
    Type: Application
    Filed: August 26, 2013
    Publication date: July 14, 2016
    Inventors: Yi Zhi YAO, Bernhard WEGMANN
  • Publication number: 20160165478
    Abstract: A method including obtaining information including at least one indicator at a first cell; and using said information to determine the available capability of said first cell for load balancing between said first cell and at least one second cell in a self-organising network.
    Type: Application
    Filed: August 2, 2013
    Publication date: June 9, 2016
    Inventors: Yi Zhi YAO, Ingo VIERING, Krzysztof KORDYBACH, Paolo ZANIER