Patents by Inventor Karl Hellwig

Karl Hellwig 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: 10148391
    Abstract: In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for removing jitter introduced by a packet switched network. Each received audio frame comprises a primary portion and a redundancy portion. The redundancy portion comprises a partial redundant copy of a previous frame that is offset by k frames. If a frame n is lost, a frame n+k that comprises the partial redundant copy of the lost frame n, is located in a jitter buffer. Based on the frame n+k, a substitute frame n? substituting the lost frame n is created and a substitution indicator of the substitute frame n? is set to indicate that the redundancy portion of the substitute fame n? should be used in decoding.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: December 4, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Bruhn, Tomas Frankkila, Karl Hellwig
  • Publication number: 20180343086
    Abstract: In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for removing jitter introduced by a packet switched network. Each received audio frame comprises a primary portion and a redundancy portion. The redundancy portion comprises a partial redundant copy of a previous frame that is offset by k frames. If a frame n is lost, a frame n+k that comprises the partial redundant copy of the lost frame n, is located in a jitter buffer. Based on the frame n+k, a substitute frame n? substituting the lost frame n is created and a substitution indicator of the substitute frame n? is set to indicate that the redundancy portion of the substitute fame n? should be used in decoding.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 29, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan BRUHN, Tomas FRANKKILA, Karl HELLWIG
  • Publication number: 20180332510
    Abstract: Systems and methods related to performing an assignment and a handover in a radio communication network are provided. In one exemplary embodiment, a method performed by a Mobile Switching Center (MSC) of a radio communication network may include seizing resources for a Time Division Multiplexed (TDM) bearer and an Internet Protocol (IP) bearer for use on a terrestrial A-interface of the radio communication network for an activity to be performed by a target Base Station Controller (BSC) of the radio communication network.
    Type: Application
    Filed: July 24, 2018
    Publication date: November 15, 2018
    Inventors: Dirk Kampmann, Karl Hellwig, Paul Schliwa-Bertling
  • Patent number: 10075884
    Abstract: Systems and methods related to performing an assignment and a handover in a radio communication network are provided. In one exemplary embodiment, a method performed by a Mobile Switching Center (MSC) of a radio communication network may include seizing resources for a Time Division Multiplexed (TDM) bearer and an Internet Protocol (IP) bearer for use on a terrestrial A-interface of the radio communication network for an activity to be performed by a target Base Station Controller (BSC) of the radio communication network.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: September 11, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Dirk Kampmann, Karl Hellwig, Paul Schliwa-Bertling
  • Patent number: 9917673
    Abstract: In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for handling codec rate adaptation in a communication network applying circuit switched communication. The method is performed by a wireless device. The method comprises receiving an indication of a codec mode and determining a codec mode subset based on the indicated codec mode. Rate adaptation is applied based on the codec modes comprised in the determined codec mode subset having a bit rate below or equal to a bit rate associated with the indicated codec mode.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: March 13, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan Bruhn, Maria Hultström, Karl Hellwig
  • Publication number: 20180026746
    Abstract: In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for removing jitter introduced by a packet switched network. Each received audio frame comprises a primary portion and a redundancy portion. The redundancy portion comprises a partial redundant copy of a previous frame that is offset by k frames. If a frame n is lost, a frame n+k that comprises the partial redundant copy of the lost frame n, is located in a jitter buffer. Based on the frame n+k, a substitute frame n? substituting the lost frame n is created and a substitution indicator of the substitute frame n? is set to indicate that the redundancy portion of the substitute fame n? should be used in decoding.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 25, 2018
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Stefan BRUHN, Tomas FRANKKILA, Karl HELLWIG
  • Patent number: 9674876
    Abstract: The invention relates to a method for setting up a connection between an originating mobile entity and a terminating mobile entity connecting to the same radio access network of a mobile communications network, the radio access network accessing a core network through a serving access gateway serving one of the two mobile entities the method performed by the serving access gateway comprising the steps of receiving a connection setup message for establishing the connection between the originating and the terminating mobile entity, wherein the connection setup message transmitted along a signalling path in the core network comprises an information element storing media plane access needs of at least one network node in the signalling path of the core network, wherein the media plane access needs indicate the needs of a network node in the signal path of the core network to access a media plane of the connection to be set up.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: June 6, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Philip Hodges, Karl Hellwig, Paul Schliwa-Bertling
  • Publication number: 20170117985
    Abstract: In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for handling codec rate adaptation in a communication network applying circuit switched communication. The method is performed by a wireless device. The method comprises receiving an indication of a codec mode and determining a codec mode subset based on the indicated codec mode. Rate adaptation is applied based on the codec modes comprised in the determined codec mode subset having a bit rate below or equal to a bit rate associated with the indicated codec mode.
    Type: Application
    Filed: March 10, 2016
    Publication date: April 27, 2017
    Inventors: Stefan BRUHN, Maria HULTSTRÖM, Karl HELLWIG
  • Publication number: 20160337913
    Abstract: Systems and methods related to performing an assignment and a handover in a radio communication network are provided. In one exemplary embodiment, a method performed by a Mobile Switching Center (MSC) of a radio communication network may include seizing resources for a Time Division Multiplexed (TDM) bearer and an Internet Protocol (IP) bearer for use on a terrestrial A-interface of the radio communication network for an activity to be performed by a target Base Station Controller (BSC) of the radio communication network.
    Type: Application
    Filed: July 29, 2016
    Publication date: November 17, 2016
    Inventors: Dirk Kampmann, Karl Hellwig, Paul Schliwa-Bertling
  • Patent number: 9497758
    Abstract: The Invention proposes a method for a Control Node (MSC) of a Core Network (CN) for late activation of a User Plane between a Radio Station (eNodeB, NodeB, BTS) and a control node (RNC, BSC) of a Radio Access Network (eUTRAN, UTRAN, URAN, GERAN, GRAN, RAN) of a call to be set-up. Furthermore, a method for a control node of a Radio Access Network for late activation of a User Plane between a Radio Station and a control node of a Radio Access of a call to be set-up is proposed MSC receives an indication that a call involving said MSC and a BSC of a RAN shall be set-up. MSC gains knowledge that said BSC is adapted for a late User Plane Activation. MSC instructs said BSC that the User Plane between the Radio Station and the BSC/RNC shall be reserved. Upon detecting that the User Plane of said call shall be through connected, MSC instructs the BSC to activate the reserved User Plane between Radio Station and BSC. In addition corresponding nodes are proposed.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: November 15, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON
    Inventors: Karl Hellwig, Dirk Kampmann, Majid Manosouri
  • Patent number: 9439109
    Abstract: A network entity for a radio communication network includes a processing unit which causes a first resource and a second resource for a terrestrial interface of the radio network to be seized, where the first resource is distinct and different from the second resource. The entity includes a network interface through which a handover request or an assignment request message identifying the first and the second resource is sent. A network entity for a radio communication network includes a network interface which receives a handover request message or an assignment request message identifying a first resource and a second resource. The first resource is distinct and different from the second resource. The entity includes a processing unit that selects one of the first and second resources, allocates a radio channel associated with the handover or assignment, selects a bearer for a terrestrial interface and seizes resources for the interface.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 6, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dirk Kampmann, Karl Hellwig, Paul Schliwa-Bertling
  • Patent number: 9204276
    Abstract: The invention relates to a method for relaying, by an in-vehicle emergency system, a private emergency point of the vehicle to a public emergency point that is handling an emergency of the vehicle in which the in-vehicle emergency system is incorporated, the public emergency point depending on the location of the emergency. The method comprises the steps of receiving a message from a call control node of a mobile communications network in response to an emergency call initiated by the in-vehicle emergency system, the message containing contact information of the public emergency point, and transmitting the received contact information of the public emergency point to the private emergency point.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: December 1, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICCSON (PUBL)
    Inventors: Karl Hellwig, Carl Anders Fagerholt, Timo Helin, Matthias Nolle
  • Patent number: 9167409
    Abstract: The invention relates to a method for controlling the activation of a voice activity detector for a call in which music control information inserted into the control signalling plane is used to disable and enable the voice activity detector.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: October 20, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Karl Hellwig, Henning Buhr, Dirk Kampmann
  • Patent number: 9060350
    Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 16, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Karl Hellwig, Philip Hodges, Dirk Kampmann
  • Patent number: 8913979
    Abstract: A network node (4), referred to as answering point (4), performs a method including a triggering procedure (s22) for triggering the transmission, towards a mobile station (2), of an instruction message (12a) including an instruction to start a new emergency communication towards the answering point (4). The triggering procedure (s22) includes sending (s226), towards the mobile station (2), a trigger message (12b). The mobile station (2) performs a method including a receiving procedure (s28) and a starting procedure (s30). The receiving procedure (s28) includes receiving the instruction message (12a) including the instruction to start a new emergency communication towards the answering point (4), and the starting procedure (s30) includes starting a new emergency communication towards the answering point (4). This enables to re-establish an emergency communication between the answering point (4) and the mobile station (2). The invention also relates to network nodes, mobile stations and computer programs.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: December 16, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Karl Hellwig, Timo Helin, Christian Van de Pol
  • Patent number: 8817617
    Abstract: A system and method control a setup of a connection in a communication network including a set of nodes, such as Mobile Switching Centers (MSCs) and Media Gateways (MGWs). In one example, a speech connection is established between MGWs subject to the control of the MSCs, which can selectively activate or deactivate codecs along the connection. The codecs potentially affect connection quality by differing amounts. A Total Accumulated Impairment (TAI) element is forwarded between the MSCs and updated by the MSCs that include individual partially accumulated impairment values corresponding to the supported codec candidates. Each individual indicator value provides information representative of the expected accumulated impairment along a candidate connection path leading up to, and including, the corresponding codec.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: August 26, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Karl Hellwig, Dirk Kampmann, Alexandru Hlibiciuc
  • Publication number: 20140169294
    Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 19, 2014
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Hellwig, Philip Hodges, Dirk Kampmann
  • Patent number: 8634326
    Abstract: A Method for controlling an establishment or a modification of a connection according to a packet based transmission scheme in a communication network (100) comprising a plurality of nodes (102-112) is proposed. The connection (113) to be established or modified comprises or utilizes one or more entities potentially causing a transmission delay for a transmission over the connection. An indicator indicating an expected accumulated delay for the connection (124) is sent between nodes controlling the connection and one of the nodes controlling the connection checks the indicator when it performs a decision on the packetisation time to be applied for the connection.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: January 21, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andreas Witzel, Karl Hellwig, Dirk Kampmann
  • Patent number: 8634838
    Abstract: The invention relates to the setting up of a connection between an originating terminal and a terminating terminal. Both terminals may connect via the same access network. The access network accesses a core network through an access gateway. The access gateway transmits and/or receives connection set-up signalling transmitted along a signalling path through at least the core network. Using an information element in the connection set-up signalling, information on media plane access needs of nodes in the signalling path is collected and provided for determining whether a local shortcut of a media path can be established in the access network.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: January 21, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Karl Hellwig, Philip Hodges, Dirk Kampmann
  • Publication number: 20140010167
    Abstract: The invention relates to a method for setting up a connection between an originating mobile entity and a terminating mobile entity connecting to the same radio access network of a mobile communications network, the radio access network accessing a core network through a serving access gateway serving one of the two mobile entities the method performed by the serving access gateway comprising the steps of receiving a connection setup message for establishing the connection between the originating and the terminating mobile entity, wherein the connection setup message transmitted along a signalling path in the core network comprises an information element storing media plane access needs of at least one network node in the signalling path of the core network, wherein the media plane access needs indicate the needs of a network node in the signal path of the core network to access a media plane of the connection to be set up.
    Type: Application
    Filed: January 19, 2011
    Publication date: January 9, 2014
    Inventors: Philip Hodges, Karl Hellwig, Paul Schliwa-Bertling