Patents by Inventor Kaj Jansen
Kaj Jansen 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).
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Patent number: 9419836Abstract: In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.Type: GrantFiled: April 21, 2009Date of Patent: August 16, 2016Assignee: Nokia Solutions and Networks OyInventors: Mieszko Chmiel, Przemyslaw Jan Czerepinski, Kaj Jansen
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Patent number: 8908611Abstract: A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.Type: GrantFiled: February 26, 2008Date of Patent: December 9, 2014Assignee: Nokia CorporationInventors: Kaj Jansen, Markku J. Heikkilä, Ulo Parts, Juha Heiskala, Zoltan Safar
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Patent number: 8649365Abstract: A mobile node, method, apparatus and system for neighbor cell identification and measurements in a wireless network. A first synchronization signal is provided a first base station, wherein the received first synchronization signal is on a predetermined frequency of a transmission bandwidth. Initial synchronization is performed. A second synchronization signal is provided, wherein the second synchronization signal is outside of the predetermined frequency of the transmission bandwidth. Neighbor cell identification based on the received second synchronization signal.Type: GrantFiled: January 5, 2007Date of Patent: February 11, 2014Assignee: Nokia CorporationInventors: Kaj Jansen, Sari Nielsen
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Patent number: 8594151Abstract: A user equipment and corresponding method detect a frequency division permanent common pilot and include a controller configured to use a sliding correlator with a frequency division phase-shift, an averaging unit configured to average a peak magnitude output of the sliding correlator over a predetermined number of sub-frames for each of possible reference pilot sequence and each sample shift of the sliding correlator, and a maximum peak storing unit configured to store first and second maximum peaks depending on corresponding ratios and a threshold. The user equipment and method thereof also include a pilot sequence index candidate storing unit configured to store a pilot sequence index candidate for each shift of the sliding correlator. The user equipment and method thereof include a selector configured to select the pilot sequence index candidate with a lowest peak ratio to shift the sliding correlator.Type: GrantFiled: October 25, 2006Date of Patent: November 26, 2013Assignee: Nokia CorporationInventors: Gilles Charbit, Ülo Parts, Kaj Jansen
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Patent number: 8594152Abstract: A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.Type: GrantFiled: January 6, 2012Date of Patent: November 26, 2013Assignee: Amosmet Investments LLCInventors: Ulo Parts, Anders Ostergaard Nielsen, Kaj Jansen
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Patent number: 8494467Abstract: The invention teaches a solution, for example, for Long Term Evolution (LTE) networks. The solution comprises determining a measurement pattern for at least one automatic gain control tracking loop when resource restrictions have been configured for a user equipment, the resource restrictions comprising at least one measurement restriction pattern, wherein each automatic gain control tracking loop is associated with at least one measurement restriction pattern; and performing automatic gain control measurements according to the measurement patterns of the at least one automatic gain control tracking loop.Type: GrantFiled: July 12, 2011Date of Patent: July 23, 2013Assignee: Renesas Mobile CorporationInventors: Tero Henttonen, Timo Roman, Chris Callender, Anders Ostergaard Nielsen, Kaj Jansen
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Patent number: 8391862Abstract: Disclosed is a method, operation of a method, and a result of execution of computer program instructions embodied on a non-transitory computer readable memory in a user equipment which performs a first received signal strength indicator scan on a plurality of frequency bands, stores the results of the first received signal strength indicator scan in memory as a plurality of received signal strength indicator values, means for attempting synchronization with a radio access network based upon one or more received signal strength indicator values, in response to failing to obtain synchronization with a radio access network, performing a second received signal strength indicator scan on the plurality of frequency bands. The second received signal strength indicator scan can alternatively be controlled for radio frequency noise.Type: GrantFiled: July 20, 2012Date of Patent: March 5, 2013Assignee: Renesas Mobile CorporationInventors: Lauri Ilmari Harju, Richard Williams, Kaj Jansen, Lene Duus Bache
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Publication number: 20130017793Abstract: The invention teaches a solution, for example, for Long Term Evolution (LTE) networks. The solution comprises determining a measurement pattern for at least one automatic gain control tracking loop when resource restrictions have been configured for a user equipment, the resource restrictions comprising at least one measurement restriction pattern, wherein each automatic gain control tracking loop is associated with at least one measurement restriction pattern; and performing automatic gain control measurements according to the measurement patterns of the at least one automatic gain control tracking loop.Type: ApplicationFiled: July 12, 2011Publication date: January 17, 2013Applicant: RENESAS MOBILE CORPORATIONInventors: Tero Henttonen, Timo Roman, Chris Callender, Anders Ostergaard Nielsen, Kaj Jansen
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Publication number: 20120106484Abstract: A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.Type: ApplicationFiled: January 6, 2012Publication date: May 3, 2012Applicant: Amosmet Investments LLCInventors: Ülo Parts, Anders Østergaard Nielsen, Kaj Jansen
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Patent number: 8170555Abstract: A method for selecting a new cell for a station in a cellular telecommunications system, the station being associated with a current cell is provided.Type: GrantFiled: July 12, 2000Date of Patent: May 1, 2012Assignee: Nokia CorporationInventors: Oscar Salonaho, Kaisu Ilsakkila, Sari K. Korpela, Kaj Jansen
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Patent number: 8102958Abstract: A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.Type: GrantFiled: June 9, 2010Date of Patent: January 24, 2012Assignee: Amosmet Investments LLCInventors: Ulo Parts, Anders Ostergaard Nielsen, Kaj Jansen
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Patent number: 8045927Abstract: A signal detection scheme is provided. According to the provided signal detection scheme, a received signal is correlated in a frequency domain with a reference signal. Additionally, the reception power of the received signal is calculated and the correlation value is normalized with the reception power. Therefore, a single threshold value may be used regardless of the reception power of the received signal when comparing the correlation between the received signal and the reference signal with the threshold value in order to determine whether the received signal is a desired signal or noise.Type: GrantFiled: April 27, 2006Date of Patent: October 25, 2011Assignee: Nokia CorporationInventor: Kaj Jansen
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Patent number: 7894417Abstract: A pilot structure, a method, and a receiver for multi-carrier cellular communications communication system include a network element and a user equipment. The network element is configured to transmit a pilot sequence. The user equipment is configured to detect a pilot sequence comprising a primary synchronization sequence at predetermined number of sub-frames at a center of a bandwidth, a primary common pilot for each sub-frame, and short system information once per frame at the center of the bandwidth, and to decode the short system information to identify system frame timing and a system bandwidth of a cell.Type: GrantFiled: October 24, 2006Date of Patent: February 22, 2011Assignee: Nokia CorporationInventors: Ülo Parts, Kaj Jansen
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Patent number: 7864884Abstract: A solution for signal detection in a radio receiver receiving multicarrier signals is disclosed. According to the provided solution, the radio receiver receives a radio signal and converts the received radio signal into digital samples. Since a desired signal being detected occupies only a portion of subcarriers of a signal the radio receiver is configured to receive, the received signal is heavily oversampled. A detection procedure may be simplified by utilizing this oversampling. A relation between the known total bandwidth of the desired signal and the total bandwidth of the received radio signal may be calculated, and utilized in the actual signal detection. The signal detection is based on sliding correlation in which the samples of the received signal are correlated with a reference signal with different phase shifts between the two signals. As the result of the correlation, the received signal is determined to be either the desired signal or noise.Type: GrantFiled: April 27, 2006Date of Patent: January 4, 2011Assignee: Nokia CorporationInventor: Kaj Jansen
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Publication number: 20100246525Abstract: A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.Type: ApplicationFiled: June 9, 2010Publication date: September 30, 2010Inventors: Ulo Parts, Anders Ostergaard Nielsen, Kaj Jansen
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Patent number: 7760793Abstract: A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.Type: GrantFiled: October 4, 2006Date of Patent: July 20, 2010Inventors: Ülo Parts, Anders Østergaard Nielsen, Kaj Jansen
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Patent number: 7724720Abstract: A method transmits a certain sequence of symbols, where a frame is constructed of a certain number of consecutive symbols. The symbols belonging to the sequence are transmitted using at least two antennas and the transmission of the sequence of symbols is with a certain transmission pattern. The transmission of the sequence of symbols is started from a predefined antenna and the transmission pattern is started from the beginning in the beginning of each frame. Also disclosed is an apparatus and a network element for controlling the transmission of a sequence of symbols.Type: GrantFiled: July 17, 2006Date of Patent: May 25, 2010Assignee: Nokia CorporationInventors: Sari Korpela, Janne Koivisto, Kaj Jansen
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Publication number: 20090270122Abstract: In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.Type: ApplicationFiled: April 21, 2009Publication date: October 29, 2009Inventors: Mieszko Chmiel, Przemyslaw Jan Czerepinski, Kaj Jansen
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Publication number: 20090219893Abstract: A method and system for soft handover area detection for uplink interference avoidance that includes a network device and mobile device in a communications network. A trigger criteria threshold is determined for the mobile device. The mobile device is using a downlink carrier. If a trigger criteria has risen above or fallen below the trigger criteria threshold, inter-frequency measurements of co-sited cells are performed and compared to determine if a soft handover area exists. Co-sited cells are searched for downlink carriers and reselection is initiated from the downlink carrier to a co-sited cell downlink carrier if the co-sited cell downlink carrier is useable by the mobile device. Reselection is initiated from the downlink carrier to a non co-sited cell downlink carrier if no co-sited cell downlink carrier useable by the mobile device is found. The system provides for reselection while uplink carrier interference is avoided.Type: ApplicationFiled: April 9, 2009Publication date: September 3, 2009Inventors: Sari Korpela, Jussi Numminen, Kjell Ostman, Kaj Jansen, Kari Rikkinen, Uwe Schwarz, Peter Muszynski
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Publication number: 20080268887Abstract: A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.Type: ApplicationFiled: February 26, 2008Publication date: October 30, 2008Inventors: Kaj Jansen, Markku J. Heikkila, Ulo Parts, Juha Heiskala, Zoltan Safar