Patents by Inventor David Navratil

David Navratil 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).

  • Publication number: 20200329347
    Abstract: Multicast and/or broadcast service may be provided to one or more radio access networks, such as using one or more multicast broadcast gateways and/or one or more nodes, such as coordination function nodes. A multicast broadcast gateway may be connected to a node via a control plane interface. The node may be associated with a base station configured to provide one or more of multicast transmissions or broadcast transmissions to user devices from a broadcast multicast core network. The multicast broadcast gateway may also be connected to the base station via a user plane interface. The multicast broadcast gateway may send, to the node and via the control plane interface, one or more control signals. The multicast broadcast gateway may send, to the base station and via the user plane interface, one or more user signals. The multicast broadcast gateway and/or node may be used to setup, update, and/or stop multicast and/or broadcast sessions.
    Type: Application
    Filed: November 16, 2018
    Publication date: October 15, 2020
    Inventors: Athul PRASAD, David NAVRATIL, Mikko SAILY
  • Publication number: 20200304958
    Abstract: Systems, methods, apparatuses, and computer program products for supporting local MBMS distribution are provided. One method includes receiving, by a broadcast multicast service center (BM-SC), an activate multimedia broadcast multicast service (MBMS) bearer request message to initiate an activate multimedia broadcast multicast service (MBMS) bearer request procedure. The activate MBMS bearer request message comprises at least one of information on local MBMS distribution received from a local MBMS entity (LME), or a destination area, or a destination area and an indication that preferred delivery is via local distribution. The method may further include determining whether local distribution path will be used based on at least one of information received in the activate MBMS bearer request message, or stored information about local MBMS entities.
    Type: Application
    Filed: March 31, 2016
    Publication date: September 24, 2020
    Inventors: Xiang XU, David NAVRATIL, Curt WONG
  • Patent number: 10757721
    Abstract: According to an aspect, there is provided an access node for a radio access network. The access node comprises means for determining, in response to receiving a plurality of data packets associated with one or more radio bearers for scheduling to terminal devices, an over-the-air transmission mode of each radio bearer. The means are further configured to, in response to determining that the one or more radio bearers comprise one or more first explicit multi-unicast, Xcast, radio bearers using multicast and one or more second radio bearers using unicast, schedule the one or more radio bearers according to a first scheduling mechanism. The first scheduling mechanism prioritizes the one or more first Xcast radio bearers to maximize a system throughput.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: August 25, 2020
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Athul Prasad, David Navratil, Andreas Maeder, Mikko Saily
  • Publication number: 20200267088
    Abstract: A method, apparatus and computer program product receive, at a network node of a communication network, information about an accumulated packet delay in the communication network. The method, apparatus and computer program product estimate next hop transport delay and estimate or measure a processing delay of the network node. The method, apparatus and computer program product update the accumulated packet delay by adding the next hop transport delay and the processing delay to the accumulated packet delay. The method, apparatus and computer program product cause transmission of information about the accumulated packet delay in a header of a packet carrying user data or a control packet in the communication network to a next hop node of the communication network.
    Type: Application
    Filed: February 17, 2020
    Publication date: August 20, 2020
    Inventors: David Navrátil, Devaki Chandramouli, Troels Kolding
  • Patent number: 10700884
    Abstract: Methods, apparatuses and computer program products are disclosed for data distribution. A method comprises: sending a message, containing an indication of a target area related to first data to be distributed, from a first distribution unit to a distribution management device; receiving first information comprising at least one target address from the distribution management device in response to sending of the message, wherein the at least one target address is related to one or more second distribution units covering the target area; and sending the first data to the at least one target address when the message does not contain the first data.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 30, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Xiang Xu, David Navratil
  • Publication number: 20200205174
    Abstract: According to an aspect, there is provided an access node for a radio access network. The access node comprises means for determining, in response to receiving a plurality of data packets associated with one or more radio bearers for scheduling to terminal devices, an over-the-air transmission mode of each radio bearer. The means are further configured to, in response to determining that the one or more radio bearers comprise one or more first explicit multi-unicast, Xcast, radio bearers using multicast and one or more second radio bearers using unicast, schedule the one or more radio bearers according to a first scheduling mechanism. The first scheduling mechanism prioritizes the one or more first Xcast radio bearers to maximize a system throughput.
    Type: Application
    Filed: December 20, 2019
    Publication date: June 25, 2020
    Inventors: Athul PRASAD, David NAVRATIL, Andreas MAEDER, Mikko SAILY
  • Publication number: 20200187282
    Abstract: An apparatus for use by a packet duplication control element or function, the apparatus including processing circuitry, and memory for storing instructions to be executed by the processing circuitry, wherein the memory and the instructions are configured to, with the processing circuitry, cause the apparatus at least: to receive assistance information indicating communication conditions of at least one communication link between a communication element and at least two communication network access points, to process the assistance information for preparing a packet duplication control, to generate transmission control information on the basis of the result of the processing of the assistance information, the transmission control information indicating settings for a packet duplication process in the established multi-connectivity communication, and to send the transmission control information to at least one transmission control element or function being involved in the packet duplication process in the estab
    Type: Application
    Filed: April 10, 2017
    Publication date: June 11, 2020
    Inventors: Ling YU, David NAVRATIL, Vinh VAN PHAN, Zexian LI
  • Publication number: 20200107386
    Abstract: There is provided a method, comprising: at least partially controlling, by a network node, transmissions in a plural of radio access technologies, RATs, each RAT being capable of providing at least one communication link to a same user equipment; deciding to transmit a packet to the user equipment at least via a first RAT; requesting a transmission of the packet additionally via at least one other RAT; determining capability information corresponding to the requested transmission of the packet via the at least one other RAT; determining transmission setup for the packet to be transmitted via the first RAT based on the capability information, wherein the transmission set-up defines at least the number of transmissions to be performed for the packet by the first RAT; and instructing the transmission of the packet via the first RAT according to the determined transmission level.
    Type: Application
    Filed: May 2, 2017
    Publication date: April 2, 2020
    Inventors: Vinh Van Phan, Zexian Li, Ling Yu, David Navratil
  • Publication number: 20200100213
    Abstract: Various communication systems may benefit from a dynamic streaming service. For example, certain streaming services may benefit from an improvement in the switching between broadcast delivery and unicast delivery for a streaming service in a cellular system. A method includes receiving information about a streaming service. The method also includes determining by a network entity in a radio access network whether to deliver data for the streaming service via multimedia broadcast or unicast based on the information and predetermined criteria for evaluating the information. In addition, the method includes triggering a sending of the data via the multimedia broadcast or the unicast.
    Type: Application
    Filed: January 28, 2016
    Publication date: March 26, 2020
    Inventors: Devaki CHANDRAMOULI, David NAVRATIL, Curt WONG, Rainer LIEBHART
  • Publication number: 20200092757
    Abstract: A method and apparatus may include transmitting a single-cell point-to-multipoint information request to a network node. The single-cell point-to-multipoint information request indicates a first service is provided by the network node. The method may include receiving a single-cell point-to-multipoint information response. The single-cell point-to-multipoint information response indicates whether the first service is provided by the network node. The method may also include transmitting a first message to user equipment. The first message indicates to the user equipment whether or not the first service is provided by the network node.
    Type: Application
    Filed: August 13, 2015
    Publication date: March 19, 2020
    Inventors: Xiang Xu, David Navratil, Manivannan Thyagarajan
  • Publication number: 20200077287
    Abstract: There is provided an apparatus, said apparatus including means for receiving, at a central unit of a base station, a measurement report from at least one user equipment receiving multicast traffic from a first distributed unit, wherein the measurement report includes at least one cell controlled by a second distributed unit and configuring, based on the measurement report, at least the first distributed unit and the second distributed unit with data transmission parameters for performing multi-cell point to multipoint transmission of multicast traffic.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 5, 2020
    Inventors: Athul Prasad, Mikko Saily, David Navratil, Andreas Maeder
  • Patent number: 10554331
    Abstract: Various communication systems, such as radio access networks, may benefit from various error correction techniques. For example, certain communication systems may benefit from quality of service driven receiver selective hybrid automatic repeat request for point-to-multipoint communication. A method can include identifying, at a receiver, at least one quality of service threshold. The method can also include identifying, at the receiver, at least one quality of service. The method can further include determining, at the receiver, whether or what kind of feedback is to be used for an erroneously received transport block based on the identified at least one quality of service threshold and the identified at least one quality of service. The method can additionally include communicating, by the receiver, with a transmitter of the erroneously received transport block based on the determination.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: February 4, 2020
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: David Navratil, Mikko Säily, Ahmad Awada
  • Publication number: 20190132717
    Abstract: There is provided a method for acquiring, by a first network element of a radio communication system, a radio bearer setup message from a second network element of the radio communication system, the radio bearer setup message indicating at least one radio bearer to be used by a terminal device of the radio communication system for at least one communication service; determining, based on the radio bearer setup message, whether the at least one radio bearer is for a vehicle-related communication service or for some other communication service; and as a response to determining that the at least one radio bearer is for the vehicle-related communication service, configuring the terminal device with at least one cell configured to provide radio resources for the vehicle-related communication service.
    Type: Application
    Filed: May 9, 2016
    Publication date: May 2, 2019
    Inventors: Xiang XU, David NAVRATIL, Hai Tao LI
  • Publication number: 20190123926
    Abstract: Methods, apparatuses and computer program products are disclosed for data distribution. A method comprises: sending a message, containing an indication of a target area related to first data to be distributed, from a first distribution unit to a distribution management device; receiving first information comprising at least one target address from the distribution management device in response to sending of the message, wherein the at least one target address is related to one or more second distribution units covering the target area; and sending the first data to the at least one target address when the message does not contain the first data.
    Type: Application
    Filed: April 1, 2016
    Publication date: April 25, 2019
    Inventors: Xiang Xu, David Navratil
  • Publication number: 20190124623
    Abstract: Embodiments of the present disclosure provide methods, apparatus and computer program products for providing broadcast/multicast services.
    Type: Application
    Filed: April 28, 2016
    Publication date: April 25, 2019
    Inventors: Xiang XU, Devaki CHANDRAMOULI, David NAVRATIL, Curt WONG
  • Patent number: 10154528
    Abstract: Handling of related identities may be valuable in communication systems. More particularly, in areas such as long term evolution advanced (LTE-A) proximity services (ProSe), it may be useful to provide for handling of ProSe device to device (D2D) related identities at the radio access network (RAN) level. A method can include deriving an initial layer one identifier corresponding to a target user equipment or group. The method can also include determining whether the initial layer one identifier collides with another layer one identifier corresponding to a different target user equipment or group. The method can further include communicating with the target user equipment or group based on the determination of whether the initial layer one identifier collides with another layer one identifier in use.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: December 11, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Vinh Van Phan, Manivannan Thyagarajan, Ling Yu, David Navratil
  • Publication number: 20180316460
    Abstract: Various communication systems, such as radio access networks, may benefit from various error correction techniques. For example, certain communication systems may benefit from quality of service driven receiver selective hybrid automatic repeat request for point-to-multipoint communication. A method can include identifying, at a receiver, at least one quality of service threshold. The method can also include identifying, at the receiver, at least one quality of service. The method can further include determining, at the receiver, whether or what kind of feedback is to be used for an erroneously received transport block based on the identified at least one quality of service threshold and the identified at least one quality of service. The method can additionally include communicating, by the receiver, with a transmitter of the erroneously received transport block based on the determination.
    Type: Application
    Filed: March 30, 2016
    Publication date: November 1, 2018
    Inventors: David Navratil, Mikko Säily, Ahmad Awada
  • Publication number: 20180242385
    Abstract: A method and apparatus may include establishing a first bearer for user equipment to transmit uplink communication to an application server. The user equipment is configured for vehicle-to-vehicle or vehicle-to-infrastructure communication. The method may also include establishing a second bearer for the application server to transmit downlink communication to the user equipment obtaining V2X services. The method may also include transmitting uplink and downlink communication between the user equipment and the application server.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 23, 2018
    Inventors: Devaki CHANDRAMOULI, Rainer LIEBHART, Juergen MERKEL, David NAVRATIL
  • Publication number: 20180109911
    Abstract: Various communication systems may benefit from network location reporting. For example, such reporting may be beneficial in the establishment of a multimedia broadcast/multicast service bearer for media traffic delivery from a group communication service application server or other similar device or system. A method can include reporting at least a first set of user equipment location information and at least a second set of user equipment location information from the user equipment to at least one network node for broadcast bearer management. The first set of user Report First Set of Report Second Set equipment location information can include a serving cell identity UE Location of UE Location of the user equipment. The second set of user equipment location information can include at least one identity of at least one network service area for media broadcasting.
    Type: Application
    Filed: April 7, 2015
    Publication date: April 19, 2018
    Inventors: Devaki CHANDRAMOULI, David NAVRATIL, Rainer LIEBHART
  • Publication number: 20180035477
    Abstract: Handling of related identities may be valuable in communication systems. More particularly, in areas such as long term evolution advanced (LTE-A) proximity services (ProSe), it may be useful to provide for handling of ProSe device to device (D2D) related identities at the radio access network (RAN) level. A method can include deriving an initial layer one identifier corresponding to a target user equipment or group. The method can also include determining whether the initial layer one identifier collides with another layer one identifier corresponding to a different target user equipment or group. The method can further include communicating with the target user equipment or group based on the determination of whether the initial layer one identifier collides with another layer one identifier in use.
    Type: Application
    Filed: January 29, 2015
    Publication date: February 1, 2018
    Inventors: Vinh Van Phan, Manivannan Thyagarajan, Ling Yu, David Navratil