Patents by Inventor Mattias Wahlqvist

Mattias Wahlqvist 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: 8165587
    Abstract: A cellular radio communications network includes a core network coupled to a radio access network (RAN) that has multiple RAN nodes for communication with mobile radio terminals. Each of the multiple RAN nodes serves one or more cells. At least one cell associated with a first RAN node is in a restricted or reserved access state in which access to the one cell is restricted for at least some mobile radio terminals. The first RAN node sends a message to a second RAN node to inform the second RAN node of that restricted access cell. The fact that the restricted status of the one cell has changed is detected. A global message tha is not related to a specific mobile terminal is generated that includes information that the restricted status of the one cell has changed. The first RAN node sends the global message to the second RAN node to inform the second RAN node of the change in the restricted status of the one cell.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: April 24, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anders Dahlen, Mats Buchmayer, Martin Israelsson, Mattias Wahlqvist
  • Patent number: 8155647
    Abstract: Methods and apparatuses for automatically determining neighbor cells are disclosed. Cell information is received. The received cell information is compared with a list of old neighbor cells. When a new cell is detected, a determination is made as to whether the detected new cell covers the same geographical area as any of the old neighbor cells. When the new cell covers the same geographical area as at least one of the cells of the list, the new cell is stored as a neighbor cell in the list. Cell information is received. The received cell information is compared with a list of old neighbor cells. New neighbors are detected based on the comparison. A determination is made as to whether there are cells in a same geographic area as the new neighbors. A determination is made as to whether there are new cells in a same geographic area as the old neighbor cells. The new neighbors, the cells in the same geographic area as the new neighbors, and the new cells are stored as neighbors in the list.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: April 10, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Martin Israelsson, Mattias Wahlqvist, Mats Buchmayer, Anders Dahlén
  • Publication number: 20120008512
    Abstract: In some embodiments herein a method in a first communication device (10) for determining a power mode for a base station to enter is disclosed. The first communication device (10) determines cell load indicating user equipment activity within a first local cell A of the base station. Furthermore, the first communication device (10) receives cell load information from a second communication device (20) comprising an indication of user equipment activity within a second cell B associated to the second communication device (20), and determines the power mode for the base station to enter based on—the received cell load information and the determined load in the first local cell (A).
    Type: Application
    Filed: December 29, 2008
    Publication date: January 12, 2012
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mattias Wahlqvist, Claes Andersson, Bo Berglund, Bo Goransson, Hakan Persson
  • Publication number: 20110158181
    Abstract: A traffic plane entity (e.g., user plane entity (UPE), serving gateway (S-GW)) and method are described herein for allocating a unique identifier (e.g., UPE/S-GW UE-Context-Id) which identifies and unifies a set of bearers within a UE context that is associated with a given UE. In operation, the traffic plane entity can then send the allocated unique identifier to another entity (e.g., mobility management entity (MME)) which at a subsequent time re-sends the unique identifier back to the traffic plane entity along with a request to have the traffic plane entity perform a specific operation or procedure on the bearers associated with the UE context of the given UE. Upon receiving the request, the traffic plane entity uses the unique identifier to perform the requested operation or procedure simultaneously on all of the bearers associated with the UE context of the given UE.
    Type: Application
    Filed: November 9, 2007
    Publication date: June 30, 2011
    Inventors: John Michael Walker, Anders Åhlén, Göran Hall, Gunnar Mildh, Mattias Wahlqvist
  • Publication number: 20100323662
    Abstract: A cellular radio communications network includes a core network coupled to a radio access network (RAN) that has multiple RAN nodes for communication with mobile radio terminals. Each of the multiple RAN nodes serves one or more cells. At least one cell associated with a first RAN node is in a restricted or reserved access state in which access to the one cell is restricted for at least some mobile radio terminals. The first RAN node sends a message to a second RAN node to inform the second RAN node of that restricted access cell. The fact that the restricted status of the one cell has changed is detected. A global message tha is not related to a specific mobile terminal is generated that includes information that the restricted status of the one cell has changed. The first RAN node sends the global message to the second RAN node to inform the second RAN node of the change in the restricted status of the one cell.
    Type: Application
    Filed: February 7, 2008
    Publication date: December 23, 2010
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Anders Dahlen, Mats Buchmayer, Martin Israelsson, Mattias Wahlqvist
  • Publication number: 20100165836
    Abstract: A technique for handling radio link failure in a communication network (10) is provided. A method implementation of this technique comprises the steps of maintaining radio link failure information including the identifier of a user equipment (UE) effected by the radio link failure together with at least one of a time stamp of when the radio link failure was detected and a reference to a cell (C1) which was serving the user equipment (UE) before the radio link failure was detected, receiving reconnection information including an identifier of a reconnected user equipment (UE) effected by a radio link failure after the user equipment (UE) is reconnected to the communication network and correlating the radio link failure information with the reconnection information to obtain a correlation result.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 1, 2010
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mattias Wahlqvist, Per Beming, Magnus Lindstrom
  • Publication number: 20090117897
    Abstract: Methods and apparatuses for automatically determining neighbor cells are disclosed. Cell information is received. The received cell information is compared with a list of old neighbor cells. When a new cell is detected, a determination is made as to whether the detected new cell covers the same geographical area as any of the old neighbor cells. When the new cell covers the same geographical area as at least one of the cells of the list, the new cell is stored as a neighbor cell in the list. Cell information is received. The received cell information is compared with a list of old neighbor cells. New neighbors are detected based on the comparison. A determination is made as to whether there are cells in a same geographic area as the new neighbors. A determination is made as to whether there are new cells in a same geographic area as the old neighbor cells. The new neighbors, the cells in the same geographic area as the new neighbors, and the new cells are stored as neighbors in the list.
    Type: Application
    Filed: October 30, 2008
    Publication date: May 7, 2009
    Inventors: Martin Israelsson, Mattias Wahlqvist, Mats Buchmayer, Anders Dahlen
  • Publication number: 20090036092
    Abstract: The present invention relates to a subscription-based measurement concept where the detailed parameters for a certain measurement report are set by a measurement provider, i.e. a radio base station, instead of the measurement requester. For this purpose the measurement provider “publishes” a certain set of measurements that controller units for radio resource management (RRM) can subscribe to. According to the present invention parameters of measurements are defined in detail in the measuring entity, i.e. the target radio base station, as opposed to being defined by the requesting entity, i. e. the RRM controller.
    Type: Application
    Filed: February 12, 2007
    Publication date: February 5, 2009
    Inventors: Johan Johansson, Mattias Wahlqvist, Martin Israelsson
  • Patent number: 6871075
    Abstract: An additional parameter is added to be used in parallel or together with a generic “load” value currently proposed for communication between a first radio network controller (controller which performs the measurement) and a second radio network controller suggesting a proposed action. Because the second controller receives the proposed action, it can take the proposed or other appropriate action in order to solve the congestion situation in the first controller more effectively in a multi-vendor environment.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: March 22, 2005
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Woonhee Hwang, Mattias Wahlqvist
  • Publication number: 20050021601
    Abstract: The present invention relates to a method, system and network element for addressing a server related to a cell in a radio access network. A server identification identifying said server is added to a setup response message transmitted from a drift controller functionality to serving controller functionality. The server identification is then used at the serving controller functionality to derive the address of the server. Thus, the correct server can be addressed and dynamic network configurations can be allowed at reduced delay and processing requirements.
    Type: Application
    Filed: August 21, 2001
    Publication date: January 27, 2005
    Inventors: Fabio Longoni, Mattias Wahlqvist
  • Publication number: 20020173314
    Abstract: An additional parameter is added to be used in parallel or together with a generic “load” value currently proposed for communication between a first radio network controller (controller which performs the measurement) and a second radio network controller suggesting a proposed action. Because the second controller receives the proposed action, it can take the proposed or other appropriate action in order to solve the congestion situation in the first controller more effectively in a multi-vendor environment.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 21, 2002
    Inventors: Woonhee Hwang, Mattias Wahlqvist
  • Patent number: 6088398
    Abstract: A method and apparatus increase a maximum available bit rate on a single data link, in order to gain capacity within single cells. An orthogonal frequency division multiplex signal is filtered by a pulse shaping operation so as to suppress side lobes of the signal. This pulse shaping introduces known inter symbol interference (ISI) and loses orthogonality between subcarriers. However, a receiver utilizes the idea of overcoming ISI by applying equalization to the signal such that the loss of orthogonality is overcome.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: July 11, 2000
    Assignee: Telia Research AB
    Inventors: Mattias Wahlqvist, Roger Larsson, Christer Ostberg
  • Patent number: 5909436
    Abstract: A random access protocol system and method for communicating between a mobile station and a base station in a multi-access digital radio communication system, including the steps of cyclically repeating a random access sequence and transmitting each cyclically repeated random access sequence in an orthogonal frequency division multiplex format from the mobile station as an uplink transmission.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: June 1, 1999
    Assignee: Telia AB
    Inventors: Bo Engstrom, Roger Larsson, Mattias Wahlqvist, Christer Ostberg