Patents by Inventor Igor Moáco Guerreiro
Igor Moáco Guerreiro 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: 20230354123Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.Type: ApplicationFiled: July 3, 2023Publication date: November 2, 2023Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 11736999Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.Type: GrantFiled: March 3, 2021Date of Patent: August 22, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 11671875Abstract: Methods, a data split unit (200) and a data collection unit (202), for controlling data transmission over two connections used for communication of data from the data split unit to the data collection unit operating in dual connection mode. The data split unit obtains (2:4) a receive split ratio between the two connections as perceived at the data collection unit, and adapts (2:5) a transmit split ratio for distributing data over the two connections based on the receive split ratio. The transmit split ratio may be adapted to reduce or eliminate a difference between the transmit split ratio and the receive split ratio. The transmission of data is then distributed (2:7A,B) over the two connections according to the adapted transmit split ratio.Type: GrantFiled: September 18, 2018Date of Patent: June 6, 2023Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Roberto Pinto Antonioli, Igor Moaco Guerreiro, Emanuel Bezerra Rodrigues
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Patent number: 11283501Abstract: An aspect of an embodiment provides a method for controlling channel quality monitoring in a wireless communication system that utilises beamforming, whereby a plurality of signals are transmitted from a base station to a user equipment and the quality of a received signal is measured at the user equipment for each of the plurality of signals, each of the plurality of signals being transmitted by the base station utilising a different frequency sub-band and beam pairing. The method includes: identifying plural frequency sub-band and beam pairings for which the received signal quality is correlated; and, for each frequency sub-band and beam pairing within a group of plural frequency sub-band and beam pairings for which the received signal quality is correlated, evaluating the periodicity of a received signal quality analysis process, and determining whether or not to adjust the periodicity.Type: GrantFiled: July 7, 2018Date of Patent: March 22, 2022Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Icaro Leonardo Jeronimo Da Silva, Igor Moaco Guerreiro, Victor Farias Monteiro
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Publication number: 20220046475Abstract: Methods, a data split unit (200) and a data collection unit (202), for controlling data transmission over two connections used for communication of data from the data split unit to the data collection unit operating in dual connection mode. The data split unit obtains (2:4) a receive split ratio between the two connections as perceived at the data collection unit, and adapts (2:5) a transmit split ratio for distributing data over the two connections based on the receive split ratio. The transmit split ratio may be adapted to reduce or eliminate a difference between the transmit split ratio and the receive split ratio. The transmission of data is then distributed (2:7A,B) over the two connections according to the adapted transmit split ratio.Type: ApplicationFiled: September 18, 2018Publication date: February 10, 2022Inventors: Roberto Pinto Antonioli, Igor Moaco Guerreiro, Emanuel Bezerra Rodrigues
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Publication number: 20210297129Abstract: An aspect of an embodiment provides a method for controlling channel quality monitoring in a wireless communication system that utilises beamforming, whereby a plurality of signals are transmitted from a base station to a user equipment and the quality of a received signal is measured at the user equipment for each of the plurality of signals, each of the plurality of signals being transmitted by the base station utilising a different frequency sub-band and beam pairing. The method includes: identifying plural frequency sub-band and beam pairings for which the received signal quality is correlated; and, for each frequency sub-band and beam pairing within a group of plural frequency sub-band and beam pairings for which the received signal quality is correlated, evaluating the periodicity of a received signal quality analysis process, and determining whether or not to adjust the periodicity.Type: ApplicationFiled: July 7, 2018Publication date: September 23, 2021Inventors: Icaro Leonardo Jeronimo DA SILVA, Igor Moaco GUERREIRO, Victor Farias MONTEIRO
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Publication number: 20210185579Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.Type: ApplicationFiled: March 3, 2021Publication date: June 17, 2021Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 10966134Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.Type: GrantFiled: June 7, 2019Date of Patent: March 30, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 10727926Abstract: According to certain embodiments, a method in a network node is provided for adaptive initial synchronization beam sweep transmission. The method includes transmitting a plurality of initial synchronization beams with at least two different beam sweep cycles. At least one beam sweep cycle is an exhaustive beam sweep cycle and at least one beam sweep cycle is an optimized beam sweep cycle. The exhaustive beam sweep cycle covers all of a serving area of the cell and the optimized beam sweep cycle covers a subset of the serving area.Type: GrantFiled: July 28, 2017Date of Patent: July 28, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Igor Moaco Guerreiro, Johan Axnãs, Robert Baldemair, Dennis Hui, Eleftherios Karipidis
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Publication number: 20190289519Abstract: A method of selecting a set of beams to be monitored by a User Equipment (UE) in a telecommunication network comprises the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, where said beams originate from at least one access node (AN) to the UE and from at least one other AN to the UE; retrieving at least one measurement data from a particular UE that matches the received measurement data, where the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time; selecting a set of beams to be monitored by said UE based on the retrieved measurement data and based on subsequent measurement data of the particular UE over time in the historical database; and transmitting said selected set of beams to be monitored to said UE.Type: ApplicationFiled: June 7, 2019Publication date: September 19, 2019Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Publication number: 20190215049Abstract: According to certain embodiments, a method in a network node is provided for adaptive initial synchronization beam sweep transmission. The method includes transmitting a plurality of initial synchronization beams with at least two different beam sweep cycles. At least one beam sweep cycle is an exhaustive beam sweep cycle and at least one beam sweep cycle is an optimized beam sweep cycle. The exhaustive beam sweep cycle covers all of a serving area of the cell and the optimized beam sweep cycle covers a subset of the serving area.Type: ApplicationFiled: July 28, 2017Publication date: July 11, 2019Inventors: Igor Moaco GUERREIRO, Johan AXNÃS, Robert BALDEMAIR, Dennis HUI, Eleftherios KARIPIDIS
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Patent number: 10349330Abstract: A method of selecting a set of beams to be monitored by a User Equipment, UE, in a telecommunication network, said telecommunication network comprising a Base Station, BS, function coupled to at least one Access Node, AN, serving said UE, said method comprising the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, wherein said beams originate from said at least one AN to said UE, and originate from at least another AN in said telecommunication network to said UE, retrieving at least one measurement data from a particular UE that matches the received measurement data, wherein the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time, selecting a set of beams to be monitored by said UE based on said retrieved at least one measurement data from said particular UE and based on subsequent measurement data of said particular UE over time in said historicType: GrantFiled: August 1, 2017Date of Patent: July 9, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 10251140Abstract: In one aspect of the teachings herein, a radio network node advantageously adapts the transmission duration of a synchronization signal with respect to transmission of the synchronization signal in different directions. For example, the radio network node uses a shorter transmission duration in beam directions that are associated with better reception conditions and a longer transmission duration in beam directions that are associated with poorer reception conditions. As a consequence of varying the transmission duration according to received-signal qualities known or expected for the different directions, the radio network node can shorten the overall time needed to complete one synchronization-signal transmission cycle and use less energy, as compared to using a more conservative, longer transmission time in all beam directions.Type: GrantFiled: February 26, 2016Date of Patent: April 2, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Johan Axnäs, Robert Baldemair, Igor Moaco Guerreiro, Dennis Hui, Eleftherios Karipidis
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Publication number: 20190045414Abstract: A method of selecting a set of beams to be monitored by a User Equipment, UE, in a telecommunication network, said telecommunication network comprising a Base Station, BS, function coupled to at least one Access Node, AN, serving said UE, said method comprising the steps of receiving measurement data comprising measurements of qualities of beams observed by said UE, wherein said beams originate from said at least one AN to said UE, and originate from at least another AN in said telecommunication network to said UE, retrieving at least one measurement data from a particular UE that matches the received measurement data, wherein the historical database comprises historical measurement data comprising measurements of qualities of beams observed by UE's in said telecommunication network over time, selecting a set of beams to be monitored by said UE based on said retrieved at least one measurement data from said particular UE and based on subsequent measurement data of said particular UE over time in said historicType: ApplicationFiled: August 1, 2017Publication date: February 7, 2019Inventors: Igor Moaco Guerreiro, Maria Fresia, Victor Farias Monteiro
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Patent number: 10135500Abstract: Techniques for determining beam-sweeping patterns for synchronization signals transmitted in a region by several access nodes in a network, where each access node is connected to a corresponding array of antenna elements. An example method includes modeling a total power function for the power transmitted in the synchronization signals, as a factor graph having a plurality of check nodes and variable nodes, each check node corresponding to a virtual wireless device in the region and each variable node corresponding to an available beam for an access node. The virtual wireless devices are emulated so as to implement quality-of-service constraints on synchronization signals received by the virtual wireless devices. An iterative message-passing algorithm, such as a min-sum algorithm, is applied to the modeled total power function, to determine a sequence of power levels, for each access node, for sweeping synchronization signal beams, so as to minimize the total power function.Type: GrantFiled: February 26, 2016Date of Patent: November 20, 2018Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Igor Moaco Guerreiro, Johan Axnäs, Robert Baldemair, Dennis Hui, Eleftherios Karipidis
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Publication number: 20170250739Abstract: Techniques for determining beam-sweeping patterns for synchronization signals transmitted in a region by several access nodes in a network, where each access node is connected to a corresponding array of antenna elements. An example method includes modeling a total power function for the power transmitted in the synchronization signals, as a factor graph having a plurality of check nodes and variable nodes, each check node corresponding to a virtual wireless device in the region and each variable node corresponding to an available beam for an access node. The virtual wireless devices are emulated so as to implement quality-of-service constraints on synchronization signals received by the virtual wireless devices. An iterative message-passing algorithm, such as a min-sum algorithm, is applied to the modeled total power function, to determine a sequence of power levels, for each access node, for sweeping synchronization signal beams, so as to minimize the total power function.Type: ApplicationFiled: February 26, 2016Publication date: August 31, 2017Inventors: Igor Moaco Guerreiro, Johan Axnäs, Robert Baldemair, Dennis Hui, Eleftherios Karipidis
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Publication number: 20170251441Abstract: In one aspect of the teachings herein, a radio network node advantageously adapts the transmission duration of a synchronization signal with respect to transmission of the synchronization signal in different directions. For example, the radio network node uses a shorter transmission duration in beam directions that are associated with better reception conditions and a longer transmission duration in beam directions that are associated with poorer reception conditions. As a consequence of varying the transmission duration according to received-signal qualities known or expected for the different directions, the radio network node can shorten the overall time needed to complete one synchronization-signal transmission cycle and use less energy, as compared to using a more conservative, longer transmission time in all beam directions.Type: ApplicationFiled: February 26, 2016Publication date: August 31, 2017Inventors: Johan Axnäs, Robert Baldemair, Igor Moaco Guerreiro, Dennis Hui, Eleftherios Karipidis
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Patent number: 9743397Abstract: Systems and methods are disclosed for graph-based distributed parameter coordination in a communications network. In general, discrete local parameters to be coordinated among communication nodes in the communications network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of a sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing of reduced size messages with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communications network. In one embodiment, the communications network is a wireless communications network. In one specific embodiment, the wireless communications network is a cellular communications network.Type: GrantFiled: November 14, 2013Date of Patent: August 22, 2017Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Charles Casimiro Cavalcante, Igor Moáco Guerreiro, Dennis Hui
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Publication number: 20150131524Abstract: Systems and methods are disclosed for graph-based distributed parameter coordination in a communications network. In general, discrete local parameters to be coordinated among communication nodes in the communications network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of a sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing of reduced size messages with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communications network. In one embodiment, the communications network is a wireless communications network. In one specific embodiment, the wireless communications network is a cellular communications network.Type: ApplicationFiled: November 14, 2013Publication date: May 14, 2015Applicant: Telefonaktiebolaget L M Ericsson (publ)Inventors: Charles Casimiro Cavalcante, Igor Moáco Guerreiro, Dennis Hui
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Patent number: 8989050Abstract: Systems and methods are disclosed for graph-based distributed parameter coordination in a communication network. In general, discrete local parameters to be coordinated among communication nodes in the communication network and their respective performance metrics, or costs, are modeled using a factor graph. Based on the factor graph, a variant of the sum-product algorithm, namely the min-sum algorithm, is applied in order for the communication nodes, through iterative message passing with their neighboring communication nodes, to decide upon optimal values for the local parameters for the communication nodes that collectively optimize a global performance metric across the communication network. In one embodiment, the communication network is a wireless communication network. In one specific embodiment, the wireless communication network is a cellular communication network.Type: GrantFiled: November 29, 2012Date of Patent: March 24, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Charles Casimiro Cavalcante, Dennis Hui, Igor Moáco Guerreiro