Patents by Inventor Kristina Zetterberg

Kristina Zetterberg 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: 20110165874
    Abstract: A method and a communication network node for satisfying detection miss probability and false detection probability requirements in a random access channel used by mobile stations (MS) for accessing a communication network system comprising radio base stations (BS) each serving at least one cell (19). The method includes optimizing a random access channel, wherein the method performs estimating detection miss probability (P m) in said cell, tuning random access parameters such that said estimated detection miss probability satisfies predetermined requirements, estimating a false detection probability (P f) in said communication cell (19), tuning said random access parameters such that said estimated false detection probability satisfies predetermined requirements, and tuning said random access parameters such that an extensive interference caused by mobile stations attempting random access in said communication cell is avoided.
    Type: Application
    Filed: September 11, 2008
    Publication date: July 7, 2011
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mehdi Amirijoo, Pål Frenger, Fredrik Gunnarsson, Johan Moe, Kristina Zetterberg
  • Publication number: 20110098035
    Abstract: The present invention relates to a method and a communication network node for automatically tuning a PRACH configuration parameter in a communication network system comprising radio base stations each serving at least one cell and with which user equipments are communicating on uplink and downlink channels. The PRACH configuration parameter is used for defining the division of uplink resource blocks between PRACH and PUSCH. Load statistics on RACH and PUSCH are collected used for determining a number of RACH opportunities required per time unit. Then a new PRACH configuration parameter having said required number of RACH opportunities per time unit is selected which is replacing the old PRACH configuration parameter.
    Type: Application
    Filed: July 2, 2008
    Publication date: April 28, 2011
    Inventors: Pål Frenger, Mehdi Amirijoo, Fredrik Gunnarsson, Kristina Zetterberg, Johan Moe
  • Publication number: 20100210255
    Abstract: A device obtains a service change associated with a cell in a radio network, and identifies helper cells in the radio network that need new random access channel (RACH) parameters due to the service change. The device also determines a RACH parameters configuration for the helper cells, and configures the helper cells with the determined RACH parameters configuration.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 19, 2010
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON
    Inventors: Mehdi Amirijoo, Pal Frenger, Fredrik Gunnarsson, Johan Moe, Kristina Zetterberg
  • Publication number: 20090191862
    Abstract: In one of its aspects the technology concerns a method of operating a telecommunications system comprising a serving radio base station and a candidate radio base station. The serving radio base station comprises a radio base station to which a wireless mobile station provides measurement reports. The serving radio base station and the candidate radio base station are different with respect to at least one of frequency and radio access technology. The method comprises the serving radio base station allowing the mobile station to obtain information broadcasted by the candidate radio base station. The information is either information for locating Cell Global Identity (CGI) of the candidate radio base station or the Cell Global Identity (CGI) itself of the radio base station. The mobile station obtains the information from the candidate radio base station during at least one reading gap.
    Type: Application
    Filed: December 10, 2008
    Publication date: July 30, 2009
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mehdi AMIRIJOO, PAL FRENGER, Fredrik GUNNARSSON, Harald KALLIN, Johan MOE, Kristina ZETTERBERG