Patents by Inventor Bjorn Johannisson
Bjorn Johannisson 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: 20210337402Abstract: A method, performed by a first network node, for handling a maintenance of one or more second network nodes is described herein. The first network node and the one or more second network nodes operate in a communications network. The first network node obtains, respectively, from each of one or more third network nodes operating in the communications network, and for a respective second network node of the one or more second network nodes, one or more predictive models for each of: a) a performance of the respective second network node, and b) a traffic load of the respective second network node. The first network node then determines one or more plans to maintain the one or more second network nodes, based on the obtained one or more predictive models.Type: ApplicationFiled: October 11, 2018Publication date: October 28, 2021Inventors: Klaus Raizer, Björn Johannisson, Alberto Hata
-
Patent number: 10446925Abstract: The present invention relates to a method for beamforming a beam using an active antenna having predetermined aperture data predetermined aperture data comprising M×N dual polarized antenna subarrays within an aperture, each dual polarized antenna subarray comprising a first antenna subarray having a first polarization and a second antenna subarray having a second polarization non-parallel with the first polarization.Type: GrantFiled: December 23, 2014Date of Patent: October 15, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Sven Petersson, Björn Johannisson, Martin Johansson
-
Patent number: 10237792Abstract: The present invention relates to a method for detecting a number of user terminals (8a, 8b), each of said user terminals (8a, 8b) comprising a receiver unit (10), a transmitter unit (11) and a control unit (12) arranged to control said receiver unit (10) and transmitter unit (11), each of said user terminals (8a, 8b) also being associated with a wireless communication network (1) comprising a plurality of network cells (2, 3), each being equipped with a node (4, 5). The method comprises detecting (16) communication between each of said user terminals (8a, 8b) and an associated node (4; 5) of said wireless communication network (1).Type: GrantFiled: August 18, 2014Date of Patent: March 19, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Henrik Sahlin, Björn Johannisson
-
Patent number: 9853357Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.Type: GrantFiled: March 12, 2015Date of Patent: December 26, 2017Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Sven Petersson, Bjorn Johannisson
-
Publication number: 20170352953Abstract: The present invention relates to a method for beamforming a beam using an active antenna having predetermined aperture data predetermined aperture data comprising M×N dual polarized antenna subarrays within an aperture, each dual polarized antenna subarray comprising a first antenna subarray having a first polarization and a second antenna subarray having a second polarization non-parallel with the first polarization.Type: ApplicationFiled: December 23, 2014Publication date: December 7, 2017Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Sven PETERSSON, Björn JOHANNISSON, Martin JOHANSSON
-
Publication number: 20170265109Abstract: The present invention relates to a method for detecting a number of user terminals (8a, 8b), each of said user terminals (8a, 8b) comprising a receiver unit (10), a transmitter unit (11) and a control unit (12) arranged to control said receiver unit (10) and transmitter unit (11), each of said user terminals (8a, 8b) also being associated with a wireless communication network (1) comprising a plurality of network cells (2, 3), each being equipped with a node (4, 5). The method comprises detecting (16) communication between each of said user terminals (8a, 8b) and an associated node (4; 5) of said wireless communication network (1).Type: ApplicationFiled: August 18, 2014Publication date: September 14, 2017Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Henrik SAHLIN, Björn JOHANNISSON
-
Patent number: 9374778Abstract: A node for use in a wireless communication system comprising at least two Tx-chains and at least two Rx-chains is provided. A first means for a switch and filter network function MSN is arranged across all Tx-chains. The first MSN is arranged to output one antenna sector signal comprising: a radio sector signal, or a split radio sector signal, the splitting of a radio sector signal allowing one radio sector signal to feed sector antennas in more than one sector, each sector having at least one sector antenna. The first or a second MSN can also be arranged across Rx-chains. Further, a method to reduce power consumption in a node and a wireless communication system comprising the node is provided.Type: GrantFiled: June 22, 2011Date of Patent: June 21, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSONInventors: Andreas Nilsson, Björn Johannisson, Sven Petersson
-
Publication number: 20150188222Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.Type: ApplicationFiled: March 12, 2015Publication date: July 2, 2015Applicant: Telefonaktiebolaget L M Ericsson (pub)Inventors: Sven PETERSSON, Bjorn JOHANNISSON
-
Patent number: 8981993Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.Type: GrantFiled: April 27, 2011Date of Patent: March 17, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Sven Petersson, Björn Johannisson
-
Patent number: 8934942Abstract: Base station arrangement (100) adapted to receive signals from a user station; adapted to be connected to or comprises a plurality of antenna elements (1, 1, 2, 2, . . . 4,) with antenna ports (11, . . . 11) and a signal processing unit (20). The base station (21) also comprises a signal pre-processing functional unit (30) to collect channel correlation information. It is adapted to establish if there is one or more distinguishing characteristics comprising different correlation properties of different configuration properties associated with the antenna elements. Antenna elements are then assigned to different groups based on said configuration properties, and the channel correlation information is used to generate weighting information which is applied to antenna ports connected to antenna elements to control the antenna ports connected to antenna elements to control the antenna element transmit power individually or groupwise.Type: GrantFiled: June 8, 2009Date of Patent: January 13, 2015Assignee: Telefonaktiebolaget L.M. Ericsson (publ)Inventors: Sven Petersson, Bjorn Johannisson
-
Patent number: 8725204Abstract: The present invention relates to a communication unit, network and method for communication within a communication network, the unit comprising a transceiver portion, a processing unit and at least one interface arrangement for communication with at least one peripheral device. The unit further comprises an arrangement for transceiving at least parts of a signal to the communication network using at least one of said interface arrangements for communication with said at least one peripheral device.Type: GrantFiled: December 22, 2005Date of Patent: May 13, 2014Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Lars Manholm, Anders Derneryd, Sven Petersson, Oscar Petersson, Jonas Fridén, Björn Johannisson, Fredrik Harrysson
-
Publication number: 20140119259Abstract: The invention provides a node for use in a wireless communication system comprising at least two Tx-chains and at least two Rx-chains. A first means for a switch and filter network function MSN is arranged across all Tx-chains. The first MSN is arranged to output one antenna sector signal comprising: a radio sector signal, or a split radio sector signal, the splitting of a radio sector signal allowing one radio sector signal to feed sector antennas in more than one sector, each sector having at least one sector antenna. The first or a second MSN can also be arranged across Rx-chains. The invention also provides a method to reduce power consumption in a node and a wireless communication system comprising the node.Type: ApplicationFiled: June 22, 2011Publication date: May 1, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Andreas Nilsson, Björn Johannisson, Sven Petersson
-
Publication number: 20130038506Abstract: The present invention relates to a node (1) in a wireless communication system comprising at least one antenna arrangement (2). The antenna arrangement (2) comprises at least a first antenna part (3) and a second antenna part (4), each antenna part (3, 4, 5) having a longitudinal extension along which extension a corresponding column axis (6, 7, 8) runs. The column axis divides each antenna part in two longitudinal sub-parts. Each antenna part (3, 4, 5) further comprises at least three antenna elements (9, 10, 11, 12, 13, 14) distributed along said column axis (6, 7, 8) and being connected to a corresponding antenna port arrangement (15, 16, 17). For each antenna part (3, 4, 5), at least one (10, 12, 14) of said antenna elements is positioned on said column axis (6, 7, 8), and at least one (9, 11, 13) of said antenna elements is positioned separate from said column axis (6, 7, 8).Type: ApplicationFiled: April 29, 2010Publication date: February 14, 2013Applicant: Telefonaktiebolaget L M Ericsson(publ)Inventors: Martin Johansson, Bjorn Johannisson, Stefan Johansson, Sven Petersson
-
Publication number: 20120274514Abstract: A method is provided for using an antenna array to create two beams (a first beam and a second beam). In one aspect, the method uses dual polarization beam forming, which allows for many degrees of freedom in designing a desired power pattern. The method is well suited for systems with multiple radio chains (e.g., systems with active antennas). The method is also well suited for multi-port systems such as TD-SCDMA. In some embodiments, the method produces two beams where (a) the shape of the power beam pattern for the first beam and the shape of the power beam pattern for the second beam are the same (or substantially the same) in a plurality of directions of interest and (b) the beams have orthogonal (or substantially orthogonal) polarizations in the coverage area.Type: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Sven PETERSSON, Björn JOHANNISSON
-
Publication number: 20120088537Abstract: Base station arrangement (100) adapted to receive signals from a user station; adapted to be connected to or comprises a plurality of antenna elements (1, 1, 2, 2, . . . 4,) with antenna ports (11, . . . 11) and a signal processing unit (20). The base station (21) also comprises a signal pre-processing functional unit (30) to collect channel correlation information. It is adapted to establish if there is one or more distinguishing characteristics comprising different correlation properties of different configuration properties associated with the antenna elements. Antenna elements are then assigned to different groups based on said configuration properties, and the channel correlation information is used to generate weighting information which is applied to antenna ports connected to antenna elements to control the antenna ports connected to antenna elements to control the antenna element transmit power individually or groupwise.Type: ApplicationFiled: June 8, 2009Publication date: April 12, 2012Applicant: Telefonaktiebolaget LM EricssonInventors: Sven Petersson, Bjorn Johannisson
-
Publication number: 20080318584Abstract: The present invention relates to a communication unit, network and method for communication within a communication network, the unit comprising a transceiver portion, a processing unit and at least one interface arrangement for communication with at least one peripheral device. The unit further comprises an arrangement for transceiving at least parts of a signal to the communication network using at least one of said interface arrangements for communication with said at least one peripheral device.Type: ApplicationFiled: December 22, 2005Publication date: December 25, 2008Inventors: Lars Manholm, Anders Derneryd, Sven Petersson, Oscar Petersson, Jonas Friden, Bjorn Johannisson, Frederik Harrysson
-
Patent number: 7069053Abstract: The present invention relates to an omnidirectional base station antenna arrangement with a number of antenna elements and a number of transceiver means for transmitting and receiving signals to/from a number of user stations. A feeding network is provided which comprises a number of phase ports, a number of which form first phase ports connected to a number of transceiver means for downlink communication and a number of which form second phase ports connected to a number of transceiver means for uplink communication. The feeding network comprises a number of antenna ports connected to antenna elements and the feeding network generates substantially independent, orthogonal signals to provide for phase diversity and the antenna elements are arranged to form at least one cylindrical array antenna.Type: GrantFiled: December 26, 2002Date of Patent: June 27, 2006Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Björn Johannisson, Anders Derneryd, Lars Josefsson
-
Publication number: 20050063342Abstract: A solution is disclosed for minimizing the amount of hardware and hardware accuracy requirements to simultaneously give the feature of both cell and narrow beams transmission, while enabling methods for capacity/coverage increase. The main property utilized by the present invention for maintaining cell-coverage pattern control, when radiating information in two simultaneous beams, is to use orthogonal polarization states for the two beams. The two orthogonal polarization states may for instance constitute linear polarization slanted at +45° and ?45°, respectively. The dedicated broadcast transmission needs to be conveyed defining the total cell coverage area. The total cell coverage area is matched by the coverage of the two fixed narrow-beams. The broadcast signal transmission is divided into two signal streams/paths, one for each of the two fixed narrow-beams (no coherency requirements existing between the two parallel signal streams/paths).Type: ApplicationFiled: November 1, 2002Publication date: March 24, 2005Inventors: Bo Hagerman, Bjorn Johannisson
-
Patent number: 6792251Abstract: A multi-carrier power amplifying arrangement has a number of amplifying devices, each of which includes a main amplifier and a linearizing device. Furthermore it includes a device signal for adding the adding output signals from the amplifying devices in phase, a device for detecting the average phase error of the amplified signals and for providing a compensating control signal. The compensating control signal is provided to each amplifying device at least to compensate for the average phase error.Type: GrantFiled: July 9, 1999Date of Patent: September 14, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Björn Johannisson, Jarek Luberek
-
Patent number: 6791507Abstract: An N-element rotational-symmetric array antenna can generate N fixed pencil-beams simultaneously with an omnidirectional beam. An N×N Butler matrix can be used to feed the array antenna, using fewer than N input ports of the Butler matrix to produce the pencil-beams. One or more of the modes generated by the Butler matrix can be individually accessed to produce one or more corresponding omnidirectional beams. The N×N Butler matrix can be driven by a feed network that provides both power dividing and beam-steering, which permits simultaneous generation of the N pencil-beams.Type: GrantFiled: February 13, 2003Date of Patent: September 14, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Martin Johansson, Bjorn Johannisson, Bo Hagerman