Patents by Inventor Christian Bergljung
Christian Bergljung 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: 9294910Abstract: A UE indicates its radio access capabilities to the base station. An element is added to the radio access capabilities reported by the UE, to indicate in a release-independent manner if a certain network signaling parameter (e.g., NS-value) has been modified or if a new parameter has been introduced for an operating band. In this manner, the base station can distinguish UE with a modified NS-value behavior from legacy UE for the purpose of admission control, imposing scheduling or handover restrictions, or the like.Type: GrantFiled: May 8, 2013Date of Patent: March 22, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Christian Bergljung, Håkan Palm, Erika Tejedor, Anders Wallén
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Publication number: 20160073277Abstract: The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits a set of contiguous resource blocks into separate contiguous portions. A first contiguous portion of the set of resource blocks is allocated to users of a first type, and a second contiguous portion of the set of resource blocks is allocated to users of a second type. A transmitter in the test apparatus transmits test signals to the users of the first type and the second type using the at least one contiguous set of resource blocks.Type: ApplicationFiled: November 5, 2012Publication date: March 10, 2016Inventors: Muhammad Ali Kazmi, Farshid Ghasemzadeh, Joakim Axmon, Walter Gerhard Alois Müller, Christian Bergljung
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Publication number: 20160073353Abstract: A method and network node (800) for controlling power of uplink transmissions from a user node (802) when switching between a first operating mode and a second operating mode. The network node (800) signals to the user node (802) a first value of a maximum allowed transmit power to be applied when operating in the first operating mode and a second value of the maximum allowed transmit power to be applied when operating in the second operating mode. The user node (802) then uses a transmit power not exceeding the first value when transmitting radio signals in the first operating mode, and uses a transmit power not exceeding the second value when transmitting radio signals in the second operating mode. Thereby, the user node (802) itself regulates the transmit power depending on operating mode without requiring further signalling from the network node (800).Type: ApplicationFiled: March 11, 2014Publication date: March 10, 2016Inventors: Anders Wallén, Christian Bergljung
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Publication number: 20160013874Abstract: Testing radio equipment is described wherein an interfering signal is swept in frequency with a step size that is chosen proportional to the bandwidth of the receive channel of the radio equipment. For example, a respective frequency bandwidth (BCh) is determined of a plurality of receive channels of the radio equipment. A proportionality constant is selected for a frequency step size. For each respective receive channel, interfering radio signals are generated and the interfering radio signals are controlled to stepwise sweep in frequency outside of each respective receive channel. The stepwise sweeping of the interfering frequency is performed with a frequency step size that is a product of the respective bandwidth and the selected proportionality constant. Any spurious response is detected in the respective receive channel.Type: ApplicationFiled: August 5, 2013Publication date: January 14, 2016Inventors: Christian Bergljung, Jan Curt Gustaf Celander, Peter Jakobsson, Henrik Jeppsson
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Patent number: 9173225Abstract: Method and arrangement in a base station for scheduling physical resources in a transmission bandwidth to a user equipment served by the base station. The physical resources may be physical channels or radio resource blocks. Some physical resources within the transmission bandwidth are subjected to a performance requirement power restriction value. The method comprises scheduling physical resources based on the performance requirement power restriction value of the physical resources to be scheduled. Also, a method and arrangement in a user equipment for assisting a base station in scheduling physical resources in a transmission bandwidth to the user equipment is described.Type: GrantFiled: December 12, 2014Date of Patent: October 27, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Yin Liu, Muhammad Kazmi, Rong Hu, Christian Bergljung
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Publication number: 20150249531Abstract: The teachings present a method performed in a network node for configuring a device for radio communication in uplink and downlink between the network node and the device. The method comprises: configuring the device with a primary cell on a first radio channel at a first carrier frequency f1 with a first frequency bandwidth B1 for time division duplexed communication in uplink and downlink; configuring the device with a secondary cell on a second radio channel at a second carrier frequency f3 with a second frequency bandwidth B3, wherein the secondary cell is adjacent to the primary cell and configured for downlink communication only; and configuring the device to support and to monitor the second radio channel, the configuration comprising a priority list according to which the device is to perform the monitoring. The teachings also disclose corresponding network node, methods in a device, and corresponding devices.Type: ApplicationFiled: June 27, 2013Publication date: September 3, 2015Inventors: Bengt Lindoff, Christian Bergljung
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Publication number: 20150139196Abstract: Method and arrangement in a base station for scheduling physical resources in a transmission bandwidth to a user equipment served by the base station. The physical resources may be physical channels or radio resource blocks. Some physical resources within the transmission bandwidth are subjected to a performance requirement power restriction value. The method comprises scheduling physical resources based on the performance requirement power restriction value of the physical resources to be scheduled. Also, a method and arrangement in a user equipment for assisting a base station in scheduling physical resources in a transmission bandwidth to the user equipment is described.Type: ApplicationFiled: December 12, 2014Publication date: May 21, 2015Inventors: Yin Liu, Muhammad Kazmi, Hu Rong, Christian Bergljung
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Publication number: 20150098425Abstract: Systems and methods relating to configuring a Secondary Component Carrier (SCC) for a wireless device in a cellular communications network are disclosed. In some embodiments, the method comprises obtaining capabilities of the wireless device, where the capabilities indicate a frequency band combination supported by the wireless device. The frequency band combination supported by the wireless device includes a first frequency band supported by a base station and the wireless device used for a Primary Cell (PCell) of the wireless device and a second frequency band supported by the wireless device but not supported by the base station. The method further comprises identifying an overlap between the second frequency band supported by the wireless device but not supported by the base station and a third frequency band supported by the base station but not supported by the wireless device and configuring the SCC for the wireless device in the overlap.Type: ApplicationFiled: October 9, 2014Publication date: April 9, 2015Inventors: Christian Bergljung, Tao Cui, Yoshio Honda, Klas Sjerling, Erika Tejedor, Toshihito Kanai
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Patent number: 8942195Abstract: Method and arrangement in a base station for scheduling physical resources in a transmission bandwidth to a user equipment served by the base station. The physical resources may be physical channels or radio resource blocks. Some physical resources within the transmission bandwidth are subjected to a performance requirement power restriction value. The method comprises scheduling physical resources based on the performance requirement power restriction value of the physical resources to be scheduled. Also, a method and arrangement in a user equipment for assisting a base station in scheduling physical resources in a transmission bandwidth to the user equipment is described.Type: GrantFiled: November 23, 2009Date of Patent: January 27, 2015Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Yin Liu, Muhammad Kazmi, Rong Hu, Christian Bergljung
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Patent number: 8935403Abstract: A method for allocating orthogonal sequences to user equipment devices, UEs, of a group sharing a channel of a telecommunication system is disclosed. The method comprises determining which UE of the group having largest transmission resource assigned for a physical uplink shared channel, PUSCH; determining a first orthogonal sequence of the UE of the group having largest transmission resource assigned; determining a second sequence that equals a quadrature phase offset of the first orthogonal sequence; reserving said second sequence when allocating sequences to remaining UEs of the group by avoiding the second sequence as long as there are other orthogonal sequences available. A control circuitry for a network node is also disclosed.Type: GrantFiled: May 6, 2010Date of Patent: January 13, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Matthias Kamuf, Christian Bergljung
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Patent number: 8804581Abstract: The present invention relates to scheduling of uplink and downlink resources between mobile terminals (110, 120) and a base station (130). To reduce the power leakage between the transmitter and the receiver of the mobile terminal (110), the scheduler allocates uplink frequency carriers and downlink frequency carriers with a large duplex distance to those mobile terminals (110, 120) that have to transmit with high power. This means that the requirements on the external SAW filter could be reduced.Type: GrantFiled: April 8, 2010Date of Patent: August 12, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Fredrik Tillman, Christian Bergljung, Bengt Lindoff
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Patent number: 8761770Abstract: The present invention relates to exchanging a cell-specific parameter such as the A-MPR, comprising information related to a required additional maximum power reduction of a UE transmitter between networks nodes. The networks nodes may be radio base stations or other network nodes such as radio network controllers or core network nodes exemplified by access gateways (aGWs). By exchanging this cell-specific parameter with information of the required additional maximum power reduction between the network nodes, the cell-specific parameter is provided to the radio base station of the serving cell which implies that the serving cell can send the cell-specific parameter of the target cell to the UE prior to the handover from the serving cell to the target cell. This result in that the UE can start transmission to the target cell with the correct cell-specific parameter and the out-of-band emission requirements can be fulfilled in the target cell.Type: GrantFiled: April 29, 2008Date of Patent: June 24, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Muhammad Kazmi, Christian Bergljung
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Publication number: 20140140290Abstract: A UE (10) indicates its radio access capabilities (20) to the base station (30). An element is added to the radio access capabilities (20) reported by the UE (10), to indicate in a release-independent manner if a certain network signaling parameter (e.g., NS-value) has been modified or if a new parameter has been introduced for an operating band. In this manner, the base station (30) can distinguish UE (10) with a modified NS-value behavior from legacy UE (10) for the purpose of admission control, imposing scheduling or handover restrictions, or the like.Type: ApplicationFiled: May 8, 2013Publication date: May 22, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Christian Bergljung, Håkan Palm, Erika Tejedor, Anders Wallén
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Publication number: 20140126498Abstract: Systems and methods for flexible spectrum, or bandwidth, support in a cellular communications network are disclosed. In one embodiment, a base station for a cellular communications network is configured to transmit a non-standardized bandwidth carrier and information that identifies a standardized bandwidth and additional information that, together with the information that identifies the standardized bandwidth, defines a non-standardized bandwidth of the non-standardized bandwidth carrier. In one embodiment, the additional information defines a bandwidth adjustment for the standardized bandwidth that defines the non-standardized bandwidth. In one embodiment, the bandwidth adjustment is a symmetric bandwidth restriction. In another embodiment, the bandwidth adjustment is an asymmetric bandwidth restriction. In yet another embodiment, the bandwidth adjustment is a symmetric bandwidth expansion. In yet another embodiment, the bandwidth adjustment is an asymmetric bandwidth expansion.Type: ApplicationFiled: November 1, 2013Publication date: May 8, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Havish Koorapaty, Christian Bergljung, Jung-Fu Cheng, Daniel Larsson
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Publication number: 20140126380Abstract: The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits a set of contiguous resource blocks into separate contiguous portions. A first contiguous portion of the set of resource blocks is allocated to users of a first type, and a second contiguous portion of the set of resource blocks is allocated to users of a second type. A transmitter in the test apparatus transmits test signals to the users of the first type and the second type using the at least one contiguous set of resource blocks.Type: ApplicationFiled: November 5, 2012Publication date: May 8, 2014Inventors: Muhammad Ali Kazmi, Farshid Ghasemzadeh, Joakim Axmon, Walter Gerhard Alois Müller, Christian Bergljung
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Publication number: 20140105149Abstract: A method in a first radio communication node (110, 310, 710, 1010) and a first radio communication node (110, 310, 710, 1010) for scheduling a data transmission in a first time frame using one of a plurality of modulation and coding schemes are provided. The data transmission is to be transmitted between the first radio communication node (110, 310, 710, 1010) and a second radio communication node (120, 320, 720, 1020). The first radio communication node (110, 310, 710, 1010) obtains (301, 701, 1001, 1401) a first indication about channel quality for the first time frame. The first radio communication node (110, 310, 710, 1010) obtains (302, 702, 1002, 1402) second indication about a possible upcoming transmission failure. The possible upcoming transmission failure relates to a feedback information to be transmitted in a second time frame. The feedback information is associated with the data transmission in the first time frame.Type: ApplicationFiled: May 14, 2012Publication date: April 17, 2014Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Bengt Lindoff, Christian Bergljung, Leif Wilhelmsson
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Patent number: 8688165Abstract: A mobile terminal transmits one or more first communication channels in a first frequency region and one or more second communication channels in a second frequency region. With the channels experiencing different fading conditions, the terminal receives separate transmit power control (TPC) commands. Instead of simply adjusting the transmit power of the channels as commanded, the terminal computes a power offset indicative of the difference between the commanded power of one or more of the first channels and the commanded power of one or more of the second channels. The terminal then selectively performs transmit power control of the first and second channels on either an independent basis, according to the respective TPC commands, or a joint basis, depending on whether the computed power offset falls outside of a pre-determined range of values. In doing so, the terminal allows independent control of channels, while also mitigating self-interference and/or spectral emissions.Type: GrantFiled: June 10, 2010Date of Patent: April 1, 2014Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Anders Wallén, Bengt Lindoff, Christian Bergljung
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Publication number: 20140010125Abstract: The teachings herein provide a number of advantages, including but not limited to improving soft-cell operation in service scenarios involving legacy devices that do not directly support carrier aggregation—i.e., devices that can transmit or receive in only one frequency band at a time. By imposing a Time Division Duplex (TDD) arrangement across two carriers operating in different frequency bands, scheduled transmissions involving the legacy device are mutually exclusive as between the two carriers. Advantageously, the TDD arrangement is imposed across first and second carriers used in the macro- and low-power layers of a soft-cell, thus imposing TDD-based coordination of scheduled transmissions between those carriers irrespective of whether the individual carriers are configured as Frequency Division Duplex (FDD) or TDD carriers, or a mix thereof.Type: ApplicationFiled: July 5, 2012Publication date: January 9, 2014Inventors: Fredrik Tillman, Christian Bergljung, Bengt Lindoff, Stefan Parkvall
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Patent number: 8447237Abstract: Mobile communication system equipment avoids interfering with another transmitter's operation. Sensing information indicating whether the other transmitter's signal has been detected is received from remote sensors, wherein each of the remote sensors is situated at a respective one of two or more sensor locations. The sensing information and information about the sensor locations is used to ascertain one or more exclusion boundaries needed to avoid interfering with the other transmitter's use of the spectral resource. Beamforming parameters are ascertained that will enable the main node to transmit within one or more predefined geographical areas except for any portion of a predefined area located on a far side of the one or more exclusion boundaries. Two or more adjusted signals are produced as a function of the beamforming parameters and one or more signals to be transmitted. The adjusted signals are transmitted from respective ones of two or more antennas.Type: GrantFiled: April 12, 2010Date of Patent: May 21, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Andres Reial, Christian Bergljung, Anders Rosenqvist
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Patent number: 8411553Abstract: The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits the resources used for transmission into contiguous unities in the frequency domain such that one or more of said unities comprise resources allocated to one or more mobile terminals under test, and at least one of said unities comprise resources allocated to virtual users.Type: GrantFiled: May 27, 2009Date of Patent: April 2, 2013Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Muhammad Ali Kazmi, Joakim Axmon, Christian Bergljung, Farshid Ghasemzadeh, Walter Muller