Patents by Inventor Zuleita HO
Zuleita HO 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: 11923933Abstract: A method includes receiving (402) a plurality of reference signals (301-303) at an antenna port of a communication device (101). Each reference signal (301-303) is sent using a corresponding precoder. The precoder is selected from a first set of precoders. The method further includes determining (403) a channel estimate based on the received plurality of reference signals (301-303), and selecting (404) a precoder from a second set of precoders based on the determined channel estimate. The second set of precoders comprises at least one precoder in addition to the precoders of the first set of precoders. The method includes sending (405) an indication (304) relating to the selected precoder.Type: GrantFiled: October 13, 2022Date of Patent: March 5, 2024Assignee: Sony Group CorporationInventors: Erik Bengtsson, Thomas Bolin, Olof Zander, Fredrik Rusek, Kun Zhao, Zuleita Ho
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Patent number: 11646770Abstract: Systems and methods for selecting a communication mode in a wireless network (10) include a communication mode selection procedure that may be carried out by the respective devices in an automated manner to identify a desired mode for communication between an electronic device (14) and a network node (12). Determining the desired mode for communication is based on the electronic device's (14) capabilities and/or the channel conditions of the communication channel between the electronic device (14) and the network node (12). The procedures described herein may allow for the high data rates associated with polarization based MIMO (P-MIMO) in capably equipped electronic devices (14) while preventing communication interruptions due to unfavorable channel conditions.Type: GrantFiled: March 27, 2019Date of Patent: May 9, 2023Assignee: Sony Group CorporationInventors: Fredrik Rusek, Zuleita Ho, Olof Zander, Erik Bengtsson
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Publication number: 20230036055Abstract: A method includes receiving (402) a plurality of reference signals (301-303) at an antenna port of a communication device (101). Each reference signal (301-303) is sent using a corresponding precoder. The precoder is selected from a first set of precoders. The method further includes determining (403) a channel estimate based on the received plurality of reference signals (301-303), and selecting (404) a precoder from a second set of precoders based on the determined channel estimate. The second set of precoders comprises at least one precoder in addition to the precoders of the first set of precoders. The method includes sending (405) an indication (304) relating to the selected precoder.Type: ApplicationFiled: October 13, 2022Publication date: February 2, 2023Inventors: Erik BENGTSSON, Thomas BOLIN, Olof ZANDER, Fredrik RUSEK, Kun ZHAO, Zuleita HO
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Patent number: 11502732Abstract: A method includes receiving (402) a plurality of reference signals (301-303) at an antenna port of a communication device (101). Each reference signal (301-303) is sent using a corresponding precoder. The precoder is selected from a first set of precoders. The method further includes determining (403) a channel estimate based on the received plurality of reference signals (301-303), and selecting (404) a precoder from a second set of precoders based on the determined channel estimate. The second set of precoders comprises at least one precoder in addition to the precoders of the first set of precoders. The method includes sending (405) an indication (304) relating to the selected precoder.Type: GrantFiled: October 10, 2019Date of Patent: November 15, 2022Assignee: Sony Group CorporationInventors: Erik Bengtsson, Thomas Bolin, Olof Zander, Fredrik Rusek, Kun Zhao, Zuleita Ho
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Patent number: 11456798Abstract: Methods (10, 30) and devices (20, 40) for performing radio transmissions in a wireless communication network are provided. A method (30) associated with a wireless terminal (40, 40A) which performs radio transmissions in the wireless communication network comprises: receiving (31) a multiple input multiple output, MIMO, transmission from an access node (20) of the wireless communication network; estimating (32) a spatial orientation (?, (?)) of an antenna array (42) of the wireless terminal (40, 40A) based on measurements performed by at least one sensor (43) of the wireless terminal (40, 40A); and based on the estimated spatial orientation (?, (?)), filtering out (33) a polarization crosstalk from the received MIMO transmission, the polarization crosstalk being associated with the spatial orientation (?, (?)) of the antenna array (42) of the wireless terminal (40, 40A).Type: GrantFiled: July 11, 2019Date of Patent: September 27, 2022Assignee: Sony Group CorporationInventors: Zuleita Ho, Kun Zhao, Anders Berggren, Erik Bengtsson, Olof Zander, Thomas Bolin, Fredrik Rusek
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Patent number: 11405089Abstract: Systems and methods for managing interference in a communication network include transmitting a first downlink signal from a first transmit/receive point (TRP) to an electronic device using a beam. The electronic device can also receive a second downlink signal from a second TRP, where a portion of the first downlink signal from the first TRP interferes with the second downlink signal. The first TRP then receives a series of uplink pilot signals from the electronic device. Using the received uplink pilot signals, the first TRP can then estimate the angle of departure (AoD) for the intended signal (first downlink signal), and the AoD for the interference signal. The first TRP can then reconfigure the beam used to transmit the first downlink signal based on the estimated AoDs for the intended signal and interference signal to manage the interference effect that the first leakage signal has on the second downlink signal.Type: GrantFiled: September 27, 2019Date of Patent: August 2, 2022Assignee: Sony Group CorporationInventors: Fredrik Rusek, Olof Zander, Zuleita Ho, Erik Bengtsson, Kun Zhao, Torgny Palenius
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Patent number: 11290157Abstract: A method of operating a terminal having multiple antenna arrays includes, using the multiple antenna arrays: respectively monitoring and reporting on at least one downlink beam-sweeped transmission of pilot signals. The method also includes, based on a comparison of values indicative of a path loss of the pilot signals monitored using the multiple antenna arrays: selectively triggering adjustment of one or more values of at least one control parameter of said monitoring and reporting.Type: GrantFiled: November 5, 2020Date of Patent: March 29, 2022Assignee: Sony Group CorporationInventors: Zuleita Ho, Fredrik Rusek, Olof Zander
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Publication number: 20210409090Abstract: Systems and methods for managing interference in a communication network include transmitting a first downlink signal (50) from a first transmit/receive point (TRP) (46) to an electronic device (14) using a beam (62). The electronic device (14) can also receive a second downlink signal (52) from a second TRP (48), where a portion (54) of the first downlink signal (50) from the first TRP (46) interferes with the second downlink signal (52). The first TRP (46) then receives a series of uplink pilot signals (66, 68) from the electronic device (14). Using the received uplink pilot signals (66, 68), the first TRP (46) can then estimate the angle of departure (AoD) for the intended signal (first downlink signal (50)), and the AoD for the interference signal (54).Type: ApplicationFiled: September 27, 2019Publication date: December 30, 2021Inventors: Fredrik RUSEK, Olof ZANDER, Zuleita HO, Erik BENGTSSON, Kun ZHAO, Torgny PALENIUS
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Publication number: 20210336667Abstract: A method includes receiving (402) a plurality of reference signals (301-303) at an antenna port of a communication device (101). Each reference signal (301-303) is sent using a corresponding precoder. The precoder is selected from a first set of precoders. The method further includes determining (403) a channel estimate based on the received plurality of reference signals (301-303), and selecting (404) a precoder from a second set of precoders based on the determined channel estimate. The second set of precoders comprises at least one precoder in addition to the precoders of the first set of precoders. The method includes sending (405) an indication (304) relating to the selected precoder.Type: ApplicationFiled: October 10, 2019Publication date: October 28, 2021Inventors: Erik BENGTSSON, Thomas BOLIN, Olof ZANDER, Fredrik RUSEK, Kun ZHAO, Zuleita HO
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Patent number: 11129167Abstract: The present application relates to methods for calibrating an array antenna (301) of a terminal (300) in a MIMO communication system (100). The method comprises: communicating, to a base station (200) of the MIMO communication system (100), a calibration capability indication from the terminal (300) indicative of a capability of the terminal (300) of calibrating receivers and transmitters for beam correspondence; communicating, from the base station (200) of the MIMO communication system (100) to the terminal (300), a control message indicative of radio resources; using the radio resources: calibrating receivers and transmitters of the terminal (300) for beam correspondence by performing over-the-air measurements of mutual coupling between antennas (310-312) of the array antenna (301).Type: GrantFiled: April 29, 2019Date of Patent: September 21, 2021Assignee: Sony Group CorporationInventors: Erik Bengtsson, Fredrik Rusek, Zuleita Ho
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Publication number: 20210184751Abstract: A communication device (30) and a method for a communication device (30), for providing a beam report (401) to an access node (20) of a wireless network, wherein the communication device is capable of communicating via at least two different device beams (34, 36). The method comprises receiving (912), from the access node (20), at least a first access node beam (50) having a first access node identity, and a second access node beam (51) having a second access node beam identity; determining (914) link quality metrics for each received access node beam; transmitting (916) the beam report (401), comprising said access node beam identities and said link quality metrics, to the access node; wherein the beam report includes information indicating whether said link quality metrics for the first access node beam (50) and a second access node beam (51) are associated with different device beams.Type: ApplicationFiled: July 31, 2019Publication date: June 17, 2021Inventors: Kun ZHAO, Olof ZANDER, Fredrik RUSEK, Erik BENGTSSON, Zuleita HO
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Publication number: 20210152219Abstract: Systems and methods for selecting a communication mode in a wireless network (10) include a communication mode selection procedure that may be carried out by the respective devices in an automated manner to identify a desired mode for communication between an electronic device (14) and a network node (12). Determining the desired mode for communication is based on the electronic device's (14) capabilities and/or the channel conditions of the communication channel between the electronic device (14) and the network node (12). The procedures described herein may allow for the high data rates associated with polarization based MIMO (P-MIMO) in capably equipped electronic devices (14) while preventing communication interruptions due to unfavorable channel conditions.Type: ApplicationFiled: March 27, 2019Publication date: May 20, 2021Inventors: Fredrik RUSEK, Zuleita HO, Olof ZANDER, Erik BENGTSSON
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Publication number: 20210143892Abstract: Methods (10, 30) and devices (20, 40) for performing radio transmissions in a wireless communication network are provided. A method (30) associated with a wireless terminal (40, 40A) which performs radio transmissions in the wireless communication network comprises: receiving (31) a multiple input multiple output, MIMO, transmission from an access node (20) of the wireless communication network; estimating (32) a spatial orientation (?, (?)) of an antenna array (42) of the wireless terminal (40, 40A) based on measurements performed by at least one sensor (43) of the wireless terminal (40, 40A); and based on the estimated spatial orientation (?, (?)), filtering out (33) a polarization crosstalk from the received MIMO transmission, the polarization crosstalk being associated with the spatial orientation (?, (?)) of the antenna array (42) of the wireless terminal (40, 40A).Type: ApplicationFiled: July 11, 2019Publication date: May 13, 2021Inventors: Zuleita HO, Kun ZHAO, Anders BERGGREN, Erik BENGTSSON, Olof ZANDER, Thomas BOLIN, Fredrik RUSEK
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Publication number: 20210143871Abstract: Methods (10; 30) and devices (20; 40) for controlling polarization division multiplex in a wireless communication network are provided.Type: ApplicationFiled: July 8, 2019Publication date: May 13, 2021Inventors: Zuleita HO, Erik BENGTSSON, Kun ZHAO, Fredrik RUSEK
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Publication number: 20210076370Abstract: The present application relates to methods for calibrating an array antenna (301) of a terminal (300) in a MIMO communication system (100). The method comprises: communicating, to a base station (200) of the MIMO communication system (100), a calibration capability indication from the terminal (300) indicative of a capability of the terminal (300) of calibrating receivers and transmitters for beam correspondence; communicating, from the base station (200) of the MIMO communication system (100) to the terminal (300), a control message indicative of radio resources; using the radio resources: calibrating receivers and transmitters of the terminal (300) for beam correspondence by performing over-the-air measurements of mutual coupling between antennas (310-312) of the array antenna (301).Type: ApplicationFiled: April 29, 2019Publication date: March 11, 2021Inventors: Erik BENGTSSON, Fredrik RUSEK, Zuleita HO
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Publication number: 20210058117Abstract: A method of operating a terminal having multiple antenna arrays includes, using the multiple antenna arrays: respectively monitoring and reporting on at least one downlink beam-sweeped transmission of pilot signals. The method also includes, based on a comparison of values indicative of a path loss of the pilot signals monitored using the multiple antenna arrays: selectively triggering adjustment of one or more values of at least one control parameter of said monitoring and reporting.Type: ApplicationFiled: November 5, 2020Publication date: February 25, 2021Inventors: Zuleita HO, Fredrik RUSEK, Olof ZANDER