Patents by Inventor Per Elmdahl

Per Elmdahl 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: 20200337100
    Abstract: A method of sharing an established connection between a primary device in a network and one of a plurality of secondary devices. The method comprising the steps of receiving from an unconnected secondary device said plurality of secondary devices, an advertising packet for identifying said unconnected secondary device, sending, to said unconnected secondary device, a connection request based on said received advertising packet for establishing a connection between said unconnected secondary device and said primary device, said connection being shared among said unconnected secondary device and said one of said plurality of secondary devices, and transmitting, to secondary devices sharing an established connection, connection parameters, wherein said connection parameters define a time shared multiplexing scheme thereby facilitating sharing of said established connection. A complementary method and device for performing a method according to the present disclosure are also presented herein.
    Type: Application
    Filed: January 19, 2018
    Publication date: October 22, 2020
    Inventors: Roman Chirikov, Per Elmdahl
  • Patent number: 10785700
    Abstract: A method in a node of a mesh network comprises receiving a plurality of neighbor count values, each neighbor count value relating to the number of neighbors associated with a particular neighbor of the node, and controlling the transmission of a beacon message based on the received neighbor count values. The method in a node of a mesh network may comprise determining a neighbor count value, the neighbor count value comprising the number of neighbor nodes associated with the node, and distributing the neighbor count value to the neighbor nodes of the node.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: September 22, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Per Skillermark, Per Elmdahl, Wei Shen
  • Patent number: 10779149
    Abstract: An advertising wireless device (110) broadcasts (202; 802) an advertising message over a wireless communication link (115). The advertising wireless device receives (203a; 803), from an advertisement responding device (120-1), a request message that was sent by the advertisement responding device (120-1) at a certain point in time in response to the broadcasted advertising message. Said certain point in time being randomized within a listening time period during which the advertising wireless device (110) listens for a response to the broadcasted advertising message and is able to receive the request message.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: September 15, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jingcheng Zhang, Per Elmdahl, Thomas Rimhagen, Wei Shen
  • Publication number: 20200092121
    Abstract: A gateway device (3, 4) and a configuration client (2) for supporting selective forwarding of messages published to a group address or a virtual address in a network (16, 17) of communicatively coupled communication devices (15), such as a Bluetooth Mesh system (1). The configuration client (2) maintains a mapping between unicast addresses of communication devices (15) and group and virtual addresses in the network (16, 17). At receipt of a message comprising a group or virtual address, the gateway device (3, 4) retrieves, from the configuration client (2), the unicast addresses of those communication devices (15) collectively identified by the group or virtual address in the received message. If the retrieved unicast addresses are all serviced by the gateway device (3, 4), the message is transmitted by the gateway device (3, 4) on all interfaces corresponding to the communication devices (15) addressed by the retrieved unicast addresses.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 19, 2020
    Inventors: Per Skillermark, Per Elmdahl, Thomas Rimhagen
  • Publication number: 20200059771
    Abstract: Embodiments herein relate to e.g. a method performed by a network node (10) for handling communication of data in a Bluetooth Low Energy (BLE) mesh network (1). The network node obtains a neighbor table, wherein the neighbor table is based on messages received from different network nodes; and selects an association between network nodes in the BLE mesh network (1) taking the neighbor table into account.
    Type: Application
    Filed: June 7, 2018
    Publication date: February 20, 2020
    Inventors: Jingcheng ZHANG, Piergiuseppe DI MARCO, Per ELMDAHL, Thomas RIMHAGEN, Wei SHEN, Per SKILLERMARK
  • Publication number: 20190280984
    Abstract: Method of establishing a route between a Route Originator, RO, mesh node and a Route Destination, RD, mesh node in a mesh network, said mesh network comprising a plurality of mesh nodes, said method comprising the steps of assembling a Route Request, RREQ, message, broadcasting said assembled RREQ message in said mesh network, receiving, by said RD mesh node, via any of said plurality of mesh nodes, said RREQ message, and transmitting, by said RD mesh node, a Route Reply, RREP, message towards said RO mesh node, and receiving, by said RO mesh node, via any of said plurality of mesh nodes, said RREP message thereby establishing said route between said RO mesh node and said RD mesh node, wherein an Route Sequence Number is used, which is a number specific for a pair of RO mesh node and RD mesh node.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 12, 2019
    Inventors: Per Elmdahl, Piergiuseppe di Marco, Jingcheng Zhang
  • Publication number: 20190014528
    Abstract: A method in a node of a mesh network comprises receiving a plurality of neighbor count values, each neighbor count value relating to the number of neighbors associated with a particular neighbor of the node, and controlling the transmission of a beacon message based on the received neighbor count values. The method in a node of a mesh network may comprise determining a neighbor count value, the neighbor count value comprising the number of neighbor nodes associated with the node, and distributing the neighbor count value to the neighbor nodes of the node.
    Type: Application
    Filed: March 14, 2017
    Publication date: January 10, 2019
    Inventors: Per SKILLERMARK, Per ELMDAHL, Wei SHEN
  • Patent number: 10051502
    Abstract: Provided are methods for handling reports on lost connections in a terminal device which is capable of being in communication connection with a plurality of network access nodes, wherein the terminal device generates, after having lost connection to a first network access node, a report on the loss of connection. The terminal device stores the report when the terminal device is reconnected to a third network access node comprising one of a different access technology, a different network, and a different network operator than the first network access node to which the terminal device was connected before the loss of connection. The terminal device also sends, upon or after reconnecting with one of the first and a second network access node, sending the report to one of the first and second network access nodes.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: August 14, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Olsson, Robert Petersen, Per Elmdahl
  • Publication number: 20180198752
    Abstract: The present disclosure relates to methods and arrangements in a private address resolving node of a personal area network deploying Bluetooth low energy, BLE and in particular to methods and arrangements for proactively resolving periodically updated private addresses. When performed in a private address resolving node of a personal area network deploying Bluetooth low energy, BLE, a method comprises resolving a periodically updated private address of a private address generating node connected to the private address resolving node. The private address is used in addressing messages from the private address resolving node to the private address generating nodes.
    Type: Application
    Filed: July 2, 2015
    Publication date: July 12, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jingcheng ZHANG, Per ELMDAHL, Thomas RIMHAGEN, Wei SHEN
  • Patent number: 9894543
    Abstract: A method and network node (400) for supporting evaluation of usage of a radio network feature in radio communication between wireless devices (402) and the network node. The network node (400) retrieves (4:1) statistical information regarding the usage of the radio network feature, and reports (4:5) the statistical information to an Operation and Maintenance, O&M, node (404). The O&M node then uses (4:6) the statistical information for evaluating how measured performance (4:3) of the radio network is related to the usage of the radio network feature.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 13, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Per Elmdahl, Samuel Axelsson, Rasmus Axén, Fredrik Gunnarsson, Ulf Hubinette, Christian Skärby
  • Publication number: 20180041861
    Abstract: An advertising wireless device (110) broadcasts (202; 802) an advertising message over a wireless communication link (115). The advertising wireless device receives (203a; 803), from an advertisement responding device (120-1), a request message that was sent by the advertisement responding device (120-1) at a certain point in time in response to the broadcasted advertising message. Said certain point in time being randomized within a listening time period during which the advertising wireless device (110) listens for a response to the broadcasted advertising message and is able to receive the request message.
    Type: Application
    Filed: March 31, 2015
    Publication date: February 8, 2018
    Inventors: Jingcheng ZHANG, Per ELMDAHL, Thomas RIMHAGEN, Wei SHEN
  • Publication number: 20160380778
    Abstract: A master device 103 and a method for transmitting a message towards a destination node. The master and the destination are operating in a network 100. The master has a Slave Neighbour Table (SNT) and a Master Neighbour Table (MNT). When the identity of the destination is comprised in the SNT, the master unicasts the message to the slave having the same identity as the destination, otherwise the master determines if the identity of the destination is in the MNT. If so, the master unicasts the message to the neighbour master having the same identity as the destination or to the neighbour master being the master of the neighbour slave having the same identity as the destination; otherwise the master multicasts the message to all neighbour masters comprised in the MNT. When the identity is neither comprised in the SNT nor in the MNT, the master broadcasts the message.
    Type: Application
    Filed: November 6, 2015
    Publication date: December 29, 2016
    Inventors: Wei Shen, Piergiuseppe di Marco, Per Elmdahl, Jingcheng Zhang
  • Patent number: 9503232
    Abstract: A cellular radio communications network includes base stations that provide radio communication service to user equipments (UEs) in respective cell service areas. A node receives or determines a usage fraction or percentage of protected subframes and converts the fraction or percentage of protected subframes into one or more protected subframe patterns for an aggressor base station to not transmit on or to transmit at reduced power, in one example, an operations and maintenance (OaM) node configures one or more interfered base stations to use the one or more protected subframe patterns, in another example, the node is a base station.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 22, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Per Elmdahl, Angelo Centonza, Fredrik Gunnarsson
  • Publication number: 20160150436
    Abstract: Provided are methods for handling reports on lost connections in a terminal device which is capable of being in communication connection with a plurality of network access nodes, wherein the terminal device generates, after having lost connection to a first network access node, a report on the loss of connection. The terminal device stores the report when the terminal device is reconnected to a third network access node comprising one of a different access technology, a different network, and a different network operator than the first network access node to which the terminal device was connected before the loss of connection. The terminal device also sends, upon or after reconnecting with one of the first and a second network access node, sending the report to one of the first and second network access nodes.
    Type: Application
    Filed: February 1, 2016
    Publication date: May 26, 2016
    Inventors: Andreas Olsson, Robert Petersen, Per Elmdahl
  • Patent number: 9288702
    Abstract: Provided are methods for handling reports on lost connections in a terminal device which is capable of being in communication connection with a plurality of network access nodes, wherein the terminal device generates, after having lost connection to a (first) network access node, a report on the loss of connection and, upon or after reconnecting of the terminal device with the same or a different network access node, sends the report on the loss of connection to the network access node. The network access node receiving a report on loss of connection from a terminal device, forwards said report to a central server and/or to a network access node to which the terminal device was connected before. Further provided are a terminal device comprising a receiver and a transmitter and being adapted to connect to an access node of a network, particularly of a wireless, e.g.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 15, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andreas Olsson, Per Elmdahl, Robert Petersen
  • Patent number: 9277047
    Abstract: A method includes: a) assigning, at a MME, after initiation of a user session of an UE, a correlation ID to the user session; b) defining, at the MME, in response to an initiation of a first trace session of the UE during the user session, a first mapping correlation which maps a first trace ID reflecting the first trace session, to the correlation ID, and sending the first mapping correlation to a TCE; and c) defining, at the MME, in response to an initiation of a second trace session of the UE during the user session, a second mapping correlation which maps a second trace ID reflecting the second trace session, to the correlation ID, and sending the second mapping correlation to the TCE. The first and second mapping correlation enable the TCE to assign trace session information to the user session.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: March 1, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: András Rácz, Per Elmdahl, Karl Norrman, Robert Petersen
  • Publication number: 20150207700
    Abstract: A method and network node (400) for supporting evaluation of performance of a radio network. The network node employs carrier aggregation with multiple carriers used in corresponding multiple cells (Cell 1, Cell2, Cell 3). The network node retrieves (4:1) statistical information regarding utilization of radio resources, wherein the statistical information indicates secondary cell use of radio resources in a particular cell. The network node reports (4:5) the statistical information to an Operation and Maintenance, O&M, node (404), thereby enabling the O&M node to use the statistical information for evaluating (4:6) how a measured performance of the radio network is related to secondary cell usage.
    Type: Application
    Filed: September 27, 2013
    Publication date: July 23, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Per Elmdahl, Samuel Axelsson, Rasmus Axén, Fredrik Gunnarsson
  • Publication number: 20150156649
    Abstract: A method and network node (400) for supporting evaluation of usage of a radio network feature in radio communication between wireless devices (402) and the network node. The network node (400) retrieves (4:1) statistical information regarding the usage of the radio network feature, and reports (4:5) the statistical information to an Operation and Maintenance, O&M, node (404). The O&M node then uses (4:6) the statistical information for evaluating how measured performance (4:3) of the radio network is related to the usage of the radio network feature.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 4, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Per Elmdahl, Samuel Axelsson, Rasmus Axén, Fredrik Gunnarsson, Ulf Hubinette, Christian Skärby
  • Publication number: 20150065083
    Abstract: A method includes: a) assigning, at a MME, after initiation of a user session of an UE, a correlation ID to the user session; b) defining, at the MME, in response to an initiation of a first trace session of the UE during the user session, a first mapping correlation which maps a first trace ID reflecting the first trace session, to the correlation ID, and sending the first mapping correlation to a TCE; and c) defining, at the MME, in response to an initiation of a second trace session of the UE during the user session, a second mapping correlation which maps a second trace ID reflecting the second trace session, to the correlation ID, and sending the second mapping correlation to the TCE. The first and second mapping correlation enable the TCE to assign trace session information to the user session.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 5, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: András Rácz, Per Elmdahl, Karl Norrman, Robert Petersen
  • Publication number: 20150016387
    Abstract: A cellular radio communications network includes base stations that provide radio communication service to user equipments (UEs) in respective cell service areas. A node receives or determines a usage fraction or percentage of protected subframes and converts the fraction or percentage of protected subframes into one or more protected subframe patterns for an aggressor base station to not transmit on or to transmit at reduced power, in one example, an operations and maintenance (OaM) node configures one or more interfered base stations to use the one or more protected subframe patterns, in another example, the node is a base station.
    Type: Application
    Filed: December 4, 2012
    Publication date: January 15, 2015
    Inventors: Per Elmdahl, Angelo Centonza, Fredrik Gunnarsson