Patents by Inventor Kumar Balachandran
Kumar Balachandran 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: 20200028745Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.Type: ApplicationFiled: May 16, 2019Publication date: January 23, 2020Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rui Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskär, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Johan Nilsson, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Anders Wallén, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanli Zheng
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Publication number: 20190373610Abstract: A network node, method and wireless device for channel assignment in a Citizens Broadband Radio Service, CBRS, band is provided. The network node includes processing circuitry configured to: map one of a plurality of channels in the CBRS band to a wireless device, the mapping of one of the plurality of channels in the CBRS band to the wireless device including: ranking the plurality of channels in the CBRS band based on a predefined maximum power per channel and a predefined maximum transmission power of a wireless device.Type: ApplicationFiled: January 16, 2018Publication date: December 5, 2019Inventors: Virgil CIMPU, Kumar BALACHANDRAN, Gary BOUDREAU
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Publication number: 20190373615Abstract: A method in a controlling node for controlling resources in a shared channel is provided. The method comprises: receiving from a network node, a request for resources in the shared channel; in response to the request, determining a utility function representing a performance metric for the network node based on transmissions from other network nodes using the shared channel; and in response to determining that the utility function satisfies a threshold, granting the resources in the shared channel to the network node. A controlling node is also provided for performing this method. The controlling node can be a Spectrum Access System (SAS), for example.Type: ApplicationFiled: November 7, 2017Publication date: December 5, 2019Inventors: Virgil CIMPU, BGary BOUDREAU, Kumar BALACHANDRAN
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Patent number: 10499324Abstract: A transmitter and a method therein for transmitting discovery signals to a receiver. The transmitter and the receiver are comprised in a radio communications system. The transmitter transmits two or more discovery signals over two or more directions. Each discovery signal is configured to span over a fraction of a carrier bandwidth.Type: GrantFiled: March 20, 2018Date of Patent: December 3, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Robert Baldemair, Kumar Balachandran, Dennis Hui
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Publication number: 20190349990Abstract: The disclosure relates to radio access systems, and more specifically to methods for media access in radio access systems. The disclosure relates to a method, performed in a first node 20b, 20c, 20d in a wireless communication system, of accessing a shared media for directive signal transmission from the first node, the method comprises three steps. The first step is receiving, from a second node, a pilot signal announcing a directive signal transmission to or from the second node. The second step is predicting based on information in the received pilot signal, a collision rate between an intended directive signal transmission from the first node and the announced directive signal transmission, the information defining the channel resources used by the announced directive signal transmission and the third step is accessing the shared media based on the predicted collision rate.Type: ApplicationFiled: July 26, 2019Publication date: November 14, 2019Inventors: Robert BALDEMAIR, Jonas KRONANDER, Dennis HUI, Kumar BALACHANDRAN, Nadia BRAHMI
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Publication number: 20190349989Abstract: The disclosure relates to radio access systems, and more specifically to methods for media access in radio access systems. The disclosure relates to a method, performed in a first node 20b, 20c, 20d in a wireless communication system, of accessing a shared media for directive signal transmission from the first node, the method comprises three steps. The first step is receiving, from a second node, a pilot signal announcing a directive signal transmission to or from the second node. The second step is predicting based on information in the received pilot signal, a collision rate between an intended directive signal transmission from the first node and the announced directive signal transmission, the information defining the channel resources used by the announced directive signal transmission and the third step is accessing the shared media based on the predicted collision rate.Type: ApplicationFiled: July 26, 2019Publication date: November 14, 2019Inventors: Robert BALDEMAIR, Jonas KRONANDER, Dennis HUI, Kumar BALACHANDRAN, Nadia BRAHMI
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Publication number: 20190335336Abstract: A method and network node for classification of interference connections between Citizens Broadband Radio Service Devices, CBSDs, in a wireless communication network are provided. According to one aspect, a method includes calculating an interference level, the calculation being based on whether two interfering CBSDs are operating in one of the alternate channels, adjacent channels and the same channel. The method also includes comparing the calculated interference level to a threshold to determine a classification of an interference connection.Type: ApplicationFiled: September 21, 2018Publication date: October 31, 2019Inventors: Virgil CIMPU, Kumar BALACHANDRAN, Gary BOUDREAU
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Publication number: 20190327765Abstract: An Authorized Shared Access (ASA) controller to provide parameter coordination for base stations and wireless devices operating on shared or adjacent channels and method of operation of same are provided. A method of operation of an ASA controller comprises configuring one or more parameters used by at least one base station and/or wireless device operating on shared or adjacent channels. The one or more parameters comprise: a parameter related to timing of Downlink (DL) or Uplink (UL) transmissions by base stations and/or wireless devices; a parameter related to carrier aggregation; a parameter related to DL and/or UL transmissions within base stations sharing the same or adjacent frequency channels; a parameter related to different DL and/or UL reference signal parameters for different base stations; a random access channel parameter; and/or a parameter related to configuring System Information Block (SIB) and Master Information Block (MIB) parameters for adjacent base stations.Type: ApplicationFiled: May 31, 2017Publication date: October 24, 2019Inventors: Amitav Mukherjee, Kumar Balachandran
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Patent number: 10447439Abstract: In a mobile network, the transmission of downlink data blocks (303, 307) to one or more terminal devices (200, 210) is accomplished on the basis of a retransmission protocol with a first feedback time (F1) defining a time interval between transmission of a first data block (303) and transmission of a first feedback message (308) being different from a second feedback time (F2) defining a time interval between transmission of a second data block (307) and transmission of a second feedback message (309). The first feedback message (308) indicates whether the first data block (303) was successfully received, and the second feedback message (309) indicates whether the second data block (307) was successfully received. A base station (100) of the mobile network controls the terminal device (200, 210) to send the second feedback message (309) on other resources than used for transmission of the first feedback message (308).Type: GrantFiled: February 21, 2012Date of Patent: October 15, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Michael Meyer, Kumar Balachandran, Erik Eriksson, Johan Rune, Joachim Sachs
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Patent number: 10447515Abstract: There is disclosed a method for operating a wireless device in a wireless communication network, the method comprising modulating a plurality of input bits (N), wherein modulating comprises choosing a first number (k) of frequencies from a predetermined set of a total number (NF) of frequencies, the first number (k) being larger than 1, and performing quadrature amplitude modulation to a second number (NQ) on each of the first number (k) of frequencies. There are further disclosed related methods and devices.Type: GrantFiled: May 21, 2015Date of Patent: October 15, 2019Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Robert Baldemair, Kumar Balachandran, Erik Dahlman
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Patent number: 10419944Abstract: A spectrum management device (110) determines spectrum assignments (205, 215) for a radio access node (120). The spectrum assignments (205, 215) comprise an access spectrum assignment (205) and a failover spectrum assignment (215) for replacing at least part of the access spectrum assignment (205) responsive to a conflict between the radio access node (120) and an incumbent user (130) with respect to the access spectrum assignment (205). The radio access node (120) is notified of the spectrum assignments (205, 215), and in response, the radio access node (120) commences radio communications according to the access spectrum assignment (205). In response to receiving notification to discontinue use of the at least part of the access spectrum assignment (205), the radio access node (120) replaces the at least part of the access spectrum assignment (205) with at least part of the failover spectrum assignment (215).Type: GrantFiled: March 29, 2016Date of Patent: September 17, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Mats Buchmayer, Kumar Balachandran
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Patent number: 10397951Abstract: The disclosure relates to radio access systems, and more specifically to methods for media access in radio access systems. The disclosure relates to a method, performed in a first node in a wireless communication system, of accessing a shared media for directive signal transmission from the first node, the method comprises three steps. The first step is receiving, from a second node, a pilot signal announcing a directive signal transmission to or from the second node. The second step is predicting based on information in the received pilot signal, a collision rate between an intended directive signal transmission from the first node and the announced directive signal transmission, the information defining the channel resources used by the announced directive signal transmission and the third step is accessing the shared media based on the predicted collision rate.Type: GrantFiled: October 25, 2013Date of Patent: August 27, 2019Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.Inventors: Robert Baldemair, Jonas Kronander, Dennis Hui, Kumar Balachandran, Nadia Brahmi
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Patent number: 10367677Abstract: Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.Type: GrantFiled: May 13, 2016Date of Patent: July 30, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Parkvall, Janne Peisa, Gunnar Mildh, Robert Baldemair, Stefan Wager, Jonas Kronander, Karl Werner, Richard Abrahamsson, Ismet Aktas, Peter Alriksson, Junaid Ansari, Shehzad Ali Ashraf, Henrik Asplund, Fredrik Athley, Håkan Axelsson, Joakim Axmon, Johan Axnäs, Kumar Balachandran, Gunnar Bark, Jan-Erik Berg, Andreas Bergström, Håkan Björkegren, Nadia Brahmi, Cagatay Capar, Anders Carlsson, Andreas Cedergren, Mikael Coldrey, Icaro L. J. da Silva, Erik Dahlman, Ali El Essaili, Ulrika Engström, Mårten Ericson, Erik Eriksson, Mikael Fallgren, Rul Fan, Gabor Fodor, Pål Frenger, Jonas Fridén, Jonas Fröberg Olsson, Anders Furuskár, Johan Furuskog, Virgile Garcia, Ather Gattami, Fredrik Gunnarsson, Ulf Gustavsson, Bo Hagerman, Fredrik Harrysson, Ning He, Martin Hessler, Kimmo Hiltunen, Songnam Hong, Dennis Hui, Jörg Huschke, Tim Irnich, Sven Jacobsson, Niklas Jaldén, Simon Järmyr, Zhiyuan Jiang, Martin Johansson, Niklas Johansson, Du Ho Kang, Eleftherios Karipidis, Patrik Karlsson, Ali S. Khayrallah, Caner Kilinc, Göran N. Klang, Sara Landström, Christina Larsson, Gen Li, Bo Lincoln, Lars Lindbom, Robert Lindgren, Bengt Lindoff, Fredrik Lindqvist, Jinhua Liu, Thorsten Lohmar, Qianxi Lu, Lars Manholm, Ivana Maric, Jonas Medbo, Qingyu Miao, Reza Moosavi, Walter Müller, Elena Myhre, Johan Nilsson, Karl Norrman, Bengt-Erik Olsson, Torgny Palenius, Sven Petersson, Jose Luis Pradas, Mikael Prytz, Olav Queseth, Pradeepa Ramachandra, Edgar Ramos, Andres Reial, Thomas Rimhagen, Emil Ringh, Patrik Rugeland, Johan Rune, Joachim Sachs, Henrik Sahlin, Vidit Saxena, Nima Seifi, Yngve Selén, Eliane Semaan, Sachin Sharma, Cong Shi, Johan Sköld, Magnus Stattin, Anders Stjernman, Dennis Sundman, Lars Sundström, Miurel Isabel Tercero Vargas, Claes Tidestav, Sibel Tombaz, Johan Torsner, Hugo Tullberg, Jari Vikberg, Peter Von Wrycza, Thomas Walldeen, Anders Wallén, Pontus Wallentin, Hai Wang, Ke Wang Helmersson, Jianfeng Wang, Yi-Pin Eric Wang, Niclas Wiberg, Emma Wittenmark, Osman Nuri Can Yilmaz, Ali Zaidi, Zhan Zhang, Zhang Zhang, Yanil Zheng
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Patent number: 10361747Abstract: A method of synchronizing transmission of signals from a network node to a receiver includes generating a synchronization signal transmission pattern in which transmission resources used for transmission of the synchronization signals in regularly spaced time intervals are changed in successive ones of the time intervals, and transmitting synchronization signals from the network node in accordance with the synchronization signal transmission pattern. Related network nodes and user equipment nodes are disclosed.Type: GrantFiled: October 24, 2014Date of Patent: July 23, 2019Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Johan Axnäs, Kumar Balachandran, Dennis Hui
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Publication number: 20190215698Abstract: According to some embodiments, a method for use in a first spectrum access system (SAS) server of authorizing spectrum access comprises: receiving, from a second SAS, information about one or more priority access license (PAL) protection areas (PPAs) served by the second SAS; receiving a spectrum grant request on behalf of one of a first PPA or a first general authorized access (GAA) user; determining whether granting the spectrum grant request may interfere with a second PPA geographically proximate the one of the first PPA or the first GAA user, wherein the second PPA is served by the second SAS; and granting or denying the spectrum grant request based at least in part on the interference determination. The interference determination may comprise modeling the radio environment within the second PPA and surrounding areas based on the spectrum grant request to determine whether an aggregate interference level exceeds a threshold.Type: ApplicationFiled: May 11, 2017Publication date: July 11, 2019Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kumar BALACHANDRAN, Virgil CIMPU, Tomas HEDBERG, Mats BUCHMAYER
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Patent number: 10313994Abstract: An access node, AN, may be configured to communicate wirelessly with a wireless device (WD). The AN can transmit a first synchronization signal block having a first format. The AN can also transmit a second synchronization signal block of a second format, the first synchronization signal block including a first format different from the format of the second synchronization signal block. The first synchronization signal block can include an extended primary synchronization signal block that can be used to synchronize disadvantaged user equipment (e.g., user equipment experiencing low signal-to-noise ratio).Type: GrantFiled: June 3, 2016Date of Patent: June 4, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Kumar Balachandran, Johan Axnäs, Dennis Hui
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Patent number: 10313161Abstract: The present disclosure presents a method performed in a first node in a wireless communication system, of accessing a shared channel for transmission from the first node to at least one second node. The method comprises the step of receiving, from a third node a pilot signal announcing reception in the third node, wherein the pilot signal comprises information enabling estimation of a channel response from the first node to the third node; estimating, using the pilot signal, a channel response from the first node to the third node and predicting, based on the estimated channel response, an interference level at the receiver of the third node of a directive transmission from the first node to the second node; and accessing the shared channel based on the predicted interference level.Type: GrantFiled: October 25, 2013Date of Patent: June 4, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Dennis Hui, Robert Baldemair, Jonas Kronander, Kumar Balachandran
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Patent number: 10314103Abstract: Techniques are disclosed for creating and using a pattern of radio resources to be shared in a cell between devices using an enhanced-coverage mode and at least one other category of devices. An example method includes forming (810) a resource pattern, the resource pattern indicating an allocation of first radio resources in a first cell to a first type of wireless device and indicating an allocation of second radio resources in the first cell to a second type of wireless device. The resource pattern is sent (820) to a second network node of the wireless communication system, e.g., a network node serving a neighboring cell, or to at least one wireless device, or to both. The resource pattern may be used in scheduling by the first network node or the second network node, or both.Type: GrantFiled: October 3, 2014Date of Patent: June 4, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kumar Balachandran, Konstantinos Dimou, Muhammad Kazmi, Anders Wallén
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Publication number: 20190159151Abstract: The present disclosure relates to transmitting synchronization signals and in particular to so called beam sweep. In particular the disclosure relates to methods for providing synchronization using synchronization sequences that are transmitted at different points in time. The disclosure also relates to corresponding devices and computer programs. A method in a network node, for transmitting synchronization sequences of a synchronization signal to one or more receiving wireless devices, comprises determining multiple synchronization sequences, such that each synchronization sequence comprises a respective timing indication, whereby each synchronization sequence enables determination of a time of an event in a receiving wireless device and transmitting the synchronization sequences to the one or more wireless devices, at different points in time.Type: ApplicationFiled: January 23, 2019Publication date: May 23, 2019Inventors: Johan Axnäs, Kumar Balachandran, Icaro L. J. da Silva, Dennis Hui, Andres Reial, Johan Rune, Henrik Sahlin
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Patent number: 10284403Abstract: A method performed by a communication node for transmission of a signal according to a single- or multiple carrier modulation scheme in a wireless communications network. The communication node modulates at least a first part of the signal into at least a first symbol with a shorter duration than a complete symbol according to the modulation scheme. The communication node modulates at least a second part of the signal into at least a second symbol with a shorter duration than a complete symbol according to the modulation scheme. The duration of the at least first and second symbols are equal to the duration of a complete symbol according to the carrier modulation scheme. Then, the communication node transmits the at least first and second symbol as a complete symbol according to the modulation scheme without time domain separation.Type: GrantFiled: October 30, 2015Date of Patent: May 7, 2019Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Johan Axnäs, Kumar Balachandran, Dennis Hui