Patents by Inventor Per Burström
Per Burström 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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Publication number: 20160164579Abstract: The present invention relates to the field of coordinated multipoint transmission and reception (CoMP) in wireless communication networks, in particular methods, an apparatus, and a network node for use in performing coordinated data transmissions in a wireless communication network. A method for use in a network node for coordinating data transmission to user equipments in a wireless communication network, wherein the wireless communication network comprising at least two access nodes each access node having one or more antennas and being arranged to perform coordinated data transmissions to user equipments is provided.Type: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Inventors: Per Burström, Peter De Bruin, Bo Hagerman, Arne Simonsson, Per Skillermark
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Patent number: 9281876Abstract: The present invention relates to the field of coordinated multipoint transmission and reception (CoMP) in wireless communication networks, in particular to methods, an apparatus, and a network node for use in performing coordinated data transmissions in a wireless communication network. A method for use in a network node for coordinating data transmission to user equipments in a wireless communication network, wherein the wireless communication network comprising at least two access nodes each access node having one or more antennas and being arranged to perform coordinated data transmissions to user equipments is provided.Type: GrantFiled: March 22, 2011Date of Patent: March 8, 2016Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Per Burström, Peter De Bruin, Bo Hagerman, Arne Simonsson, Per Skillermark
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Patent number: 9253731Abstract: A UE and a method therein for transmission power control of uplink transmissions are provided. The method comprises receiving, through signalling a configuration indicating at least one reference signal, RS, and a reference transmission power level for each indicated RS. The method further comprises measuring received power of the indicated at least one RS, and for each measured received power, determining a pathloss, PL, based on the measured received power and the reference transmission power level for each measured received power. The method further comprises determining an uplink transmission power based on at least one determined PL.Type: GrantFiled: May 3, 2012Date of Patent: February 2, 2016Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Stefan Parkvall, Per Burström, Erik Dahlman, Jonas Fröberg Olsson, George Jöngren, Arne Simonsson, Stefano Sorrentino
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Publication number: 20150358062Abstract: A transmitting node and methods therein A transmitting node and a method therein for controlling a transmission rank in a wireless communications system. The wireless communications system comprises the transmitting node and a receiving node. The transmitting node is configured to transmit on multiple antennas according to the transmission rank. The transmitting node allocates one or more first transmission resources between the transmitting node and the receiving node to operate according to a first transmission rank, and one or more second transmission resources between the transmitting node and the receiving node to operate according to a second transmission rank. When a performance of the second transmission rank outperforms a performance of the first transmission rank, the transmitting node configures at least one of the one or more first transmission resources to operate according to the second transmission rank.Type: ApplicationFiled: February 18, 2013Publication date: December 10, 2015Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Per SKILLERMARK, David ASTELY, Per BURSTRÖM, Jonas FRÖBERG OLSSON, Chrysostomos KOUTSIMANIS, Olle ROSIN, Sara SANDBERG
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Patent number: 9072055Abstract: According to some embodiments, there is provided a base station system configured to, among other things, (a) detect whether a particular UE is using too much power to transmit uplink data and (b) in response, transmit a message to the UE instructing the UE to detect a power control RS (PCRS) that is intended only for the particular UE. In some embodiments, the PCRS is transmitted such that the power (actual or nominal) of the PCRS as received by the UE is higher than the power of the previous CRS detected by the UE, thereby leading the UE to calculate a lower PL value, which can lead to the UE lowering its output power.Type: GrantFiled: June 20, 2012Date of Patent: June 30, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: George Jöngren, Per Burström, Arne Simonsson, Stefano Sorrentino
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Patent number: 8923136Abstract: The present invention provides a method and a radio base station (4) which actively monitor the error rate for messages transmitted over an uplink control channel between the radio base station (4) and one or more mobile terminals (6). The distribution of messages transmitted on the uplink control channel is then adapted in dependence on the measured error rate.Type: GrantFiled: December 15, 2008Date of Patent: December 30, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Arne Simonsson, Per Burström, Peter Moberg, Jessica Östergaard
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Patent number: 8838118Abstract: Method and arrangement (600) in a first network node (120-1), serving a first cell (130-1), for forming a coordination group for coordinating multipoint wireless communication. The method comprising determining (502) interference within the first cell (130-1). Also, the method comprises identifying (503) a second network node (120-2), which is either transmitting radio signals causing the interference, serving a user equipment (110-1), which transmits radio signals causing the interference, or being the intended recipient of radio signals causing the interference. Additionally, the method comprises transmitting (504) a token to the identified second network node (120-2), inviting it to coordinate the wireless communication. Furthermore, in addition, if acceptance is received, the method comprises forming (505) a coordination group together with the second network node (120-2), and coordinate the wireless communication. Further, a method and arrangement (800) in a second network node (120-2) is presented.Type: GrantFiled: May 3, 2011Date of Patent: September 16, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Arne Simonsson, Per Burström, Peter De Bruin, Bo Hagerman, Per Skillermark
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Patent number: 8737255Abstract: A method and an arrangement (500) in a radio network node (130) for redistributing resources between at least a first and second communication device (110, 120) are provided. The radio network node (130) obtains a first estimate of a first signal quality for the first communication device (110) and a second estimate of a second signal quality for the second communication device (120). The radio network node (130) determines a first required signal quality for the first communication device (110) and a second required signal quality for the second communication device (120). When the first required signal quality is less than the first estimate and the second required signal quality is greater than the second estimate, the radio network node (130) allocates resources to the first and second communication devices (110, 120) such that the first signal quality decreases and such that the second signal quality increases.Type: GrantFiled: October 28, 2010Date of Patent: May 27, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Sara Landström, Per Burström, Stefan Wänstedt
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Publication number: 20140113677Abstract: A UE and a method therein for transmission power control of uplink transmissions are provided. The method comprises receiving, through signalling a configuration indicating at least one reference signal, RS, and a reference transmission power level for each indicated RS. The method further comprises measuring received power of the indicated at least one RS, and for each measured received power, determining a pathloss, PL, based on the measured received power and the reference transmission power level for each measured received power. The method further comprises determining an uplink transmission power based on at least one determined PL.Type: ApplicationFiled: May 3, 2012Publication date: April 24, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Stefan Parkvall, Per Burström, Erik Dahlman, Jonas Fröberg Olsson, George Jöngren, Arne Simonsson, Stefano Sorrentino
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Publication number: 20140011531Abstract: The present invention relates to the field of coordinated multipoint transmission and reception (CoMP) in wireless communication networks, in particular to methods, an apparatus, and a network node for use in performing coordinated data transmissions in a wireless communication network. A method for use in a network node for coordinating data transmission to user equipments in a wireless communication network, wherein the wireless communication network comprising at least two access nodes each access node having one or more antennas and being arranged to perform coordinated data transmissions to user equipments is provided.Type: ApplicationFiled: March 22, 2011Publication date: January 9, 2014Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Per Burström, Peter De Bruin, Bo Hagerman, Arne Simonsson, Per Skillermark
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Patent number: 8457062Abstract: A method performed in a wireless network includes receiving signals within a downlink frequency domain to enable channel estimation and measuring two or more signals only for two or more frequency bands of the downlink frequency domain that correspond to two or more uplink frequency bands associated with a scheduling grant or channel allocation that correspond to physical uplink channel frequency bands. The method also includes calculating path loss values for each of the frequency bands and calculating a total power based on the path loss values corresponding to the frequency bands. The method further includes determining a power allocation per frequency band based on the calculated total power to be applied to an uplink transmission and allocating the total power.Type: GrantFiled: September 15, 2008Date of Patent: June 4, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Per Burström, Anders Furuskär, David Astely, Arne Simonsson
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Publication number: 20130051352Abstract: A method for uplink power control at a mobile station which is served by a base station of a communications network comprising a plurality of base stations is provided where the power spectrum density of the mobile station is adaptable based on the bandwidth scheduled to the mobile station. The suggested power spectrum adaptation is obtained by providing for a switch to an alternative power control mode which enables for transmit power boosting at the mobile station. The decision whether to apply the suggested power spectrum adaptation can be made at the base station which is serving the mobile station, or at a selected mobile station.Type: ApplicationFiled: April 30, 2010Publication date: February 28, 2013Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ)Inventors: Per Burström, Anders Furuskär, Arne Simonsson
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Publication number: 20130003583Abstract: A method and an arrangement (500) in a radio network node (130) for redistributing resources between at least a first and second communication device (110, 120) are provided. The radio network node (130) obtains a first estimate of a first signal quality for the first communication device (110) and a second estimate of a second signal quality for the second communication device (120). The radio network node (130) determines a first required signal quality for the first communication device (110) and a second required signal quality for the second communication device (120). When the first required signal quality is less than the first estimate and the second required signal quality is greater than the second estimate, the radio network node (130) allocates resources to the first and second communication devices (110, 120) such that the first signal quality decreases and such that the second signal quality increases.Type: ApplicationFiled: October 28, 2010Publication date: January 3, 2013Inventors: Sara Landström, Per Burström, Stefan Wänstedt
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Publication number: 20120329503Abstract: According to some embodiments, there is provided a base station system configured to, among other things, (a) detect whether a particular UE is using too much power to transmit uplink data and (b) in response, transmit a message to the UE instructing the UE to detect a power control RS (PCRS) that is intended only for the particular UE. In some embodiments, the PCRS is transmitted such that the power (actual or nominal) of the PCRS as received by the UE is higher than the power of the previous CRS detected by the UE, thereby leading the UE to calculate a lower PL value, which can lead to the UE lowering its output power.Type: ApplicationFiled: June 20, 2012Publication date: December 27, 2012Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: George Jöngren, Per Burström, Arne Simonsson, Stefano Sorrentino
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Publication number: 20120282934Abstract: Method and arrangement (600) in a first network node (120-1), serving a first cell (130-1), for forming a coordination group for coordinating multipoint wireless communication. The method comprising determining (502) interference within the first cell (130-1). Also, the method comprises identifying (503) a second network node (120-2), which is either transmitting radio signals causing the interference, serving a user equipment (110-1), which transmits radio signals causing the interference, or being the intended recipient of radio signals causing the interference. Additionally, the method comprises transmitting (504) a token to the identified second network node (120-2), inviting it to coordinate the wireless communication. Furthermore, in addition, if acceptance is received, the method comprises forming (505) a coordination group together with the second network node (120-2), and coordinate the wireless communication. Further, a method and arrangement (800) in a second network node (120-2) is presented.Type: ApplicationFiled: May 3, 2011Publication date: November 8, 2012Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)Inventors: Arne Simonsson, Per Burström, Peter De Bruin, Bo Hagerman, Per Skillermark
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Publication number: 20110242990Abstract: The present invention provides a method and a radio base station (4) which actively monitor the error rate for messages transmitted over an uplink control channel between the radio base station (4) and one or more mobile terminals (6). The distribution of messages transmitted on the uplink control channel is then adapted in dependence on the measured error rate.Type: ApplicationFiled: December 15, 2008Publication date: October 6, 2011Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Arne Simonsson, Per Burström, Peter Moberg, Jessica Östergaard
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Publication number: 20110244905Abstract: According to embodiment of the present invention, there is provided a radio base station (20) and a corresponding method for estimating the quality of the uplink control channel. The method comprises measuring (32, 42) a quality parameter of the uplink data channel, and using (38, 50) this to estimate the quality of the uplink control channel. In one embodiment, measurements of the uplink control channel are taken and their reliability determined. If the reliability is low (i.e. below a threshold, or below the respective measurements taken on the uplink data channel), then measurements on the data channel are used instead of those made on the control channel to estimate the control channel quality.Type: ApplicationFiled: December 9, 2008Publication date: October 6, 2011Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Per Burström, Aare Mällo, Henrik Sahlin, Arne Simonsson
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Publication number: 20110075594Abstract: A method performed in a wireless network includes receiving signals within a downlink frequency domain to enable channel estimation and measuring two or more signals only for two or more frequency bands of the downlink frequency domain that correspond to two or more uplink frequency bands associated with a scheduling grant or channel allocation that correspond to physical uplink channel frequency bands. The method also includes calculating path loss values for each of the frequency bands and calculating a total power based on the path loss values corresponding to the frequency bands. The method further includes determining a power allocation per frequency band based on the calculated total power to be applied to an uplink transmission and allocating the total power.Type: ApplicationFiled: September 15, 2008Publication date: March 31, 2011Inventors: Per Burström, Anders Furuskär, David Astely, Arne Simonsson