Patents by Inventor Ali Zaidi

Ali Zaidi 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).

  • Patent number: 11949621
    Abstract: A system and method for providing phase noise-based signal design for positioning in a communication system. In one embodiment, an apparatus is configured to receive configuration parameters for a reference signal based on a level of phase noise for the reference signal estimated by a user equipment, apply the configuration parameters to the reference signal to obtain a modified reference signal, and transmit the modified reference signal to the user equipment to enable a position of the user equipment to be determined.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 2, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Satyam Dwivedi, Ali Zaidi, Dehan Luan
  • Patent number: 11800483
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: October 24, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
  • Patent number: 11445469
    Abstract: Methods and apparatuses for determining a position of a wireless device in a wireless communication network are provided. The method includes obtaining a first sequence of Time Difference of Arrivals (TDOAs) at the wireless device of reference signals, which are transmitted by and used for synchronization of a first pair of network nodes; and determining, based on the first sequence of TDOAs, a first relative distance. The method also includes obtaining a second sequence of TDOAs at the wireless device of reference signals, which are transmitted by and used for synchronization of a second pair of network nodes; and determining, based on the first sequence of TDOAs, a second relative distance. The method further includes determining the position of the wireless device based on the first and second relative distances. Corresponding computer programs and computer program carriers are also disclosed.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: September 13, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Satyam Dwivedi, Henrik Asplund, Jonas Medbo, Fredrik Gunnarsson, Ali Zaidi, Sara Modarres Razavi
  • Publication number: 20220217673
    Abstract: Systems and methods for providing measurement reporting for mobile radio network nodes are provided. Embodiments of a method performed by a user equipment (UE) comprise obtaining, from a location server, positioning assistance information comprising information for mobile radio network nodes and their corresponding downlink signal configurations, and measuring one or more positioning parameters corresponding to each of one or more mobile radio network nodes. In another embodiment, a method performed by a location server comprises determining mobile radio network nodes in a vicinity of a UE, and sending, to the UE, positioning assistance information comprising information for mobile radio network nodes and their corresponding downlink signal configurations.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 7, 2022
    Inventors: Ali Zaidi, Ritesh Shreevastav, Fredrik Gunnarsson, Henrik Rydén, Satyam Dwivedi, Sara Modarres Razavi
  • Publication number: 20220070818
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Application
    Filed: September 10, 2021
    Publication date: March 3, 2022
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik GUNNARSSON, Sara Modarres Razavi, Henrik Ryden, Meng Wang, Ali Zaidi
  • Publication number: 20220006589
    Abstract: A system and method for providing phase noise-based signal design for positioning in a communication system. In one embodiment, an apparatus is configured to receive configuration parameters for a reference signal based on a level of phase noise for the reference signal estimated by a user equipment, apply the configuration parameters to the reference signal to obtain a modified reference signal, and transmit the modified reference signal to the user equipment to enable a position of the user equipment to be determined.
    Type: Application
    Filed: November 7, 2019
    Publication date: January 6, 2022
    Inventors: Satyam DWIVEDI, Ali ZAIDI, Dehan LUAN
  • Publication number: 20210112521
    Abstract: Methods and apparatuses for determining a position of a wireless device in a wireless communication network are provided. The method includes obtaining a first sequence of Time Difference of Arrivals (TDOAs) at the wireless device of reference signals, which are transmitted by and used for synchronization of a first pair of network nodes; and determining, based on the first sequence of TDOAs, a first relative distance. The method also includes obtaining a second sequence of TDOAs at the wireless device of reference signals, which are transmitted by and used for synchronization of a second pair of network nodes; and determining, based on the first sequence of TDOAs, a second relative distance. The method further includes determining the position of the wireless device based on the first and second relative distances. Corresponding computer programs and computer program carriers are also disclosed.
    Type: Application
    Filed: February 9, 2018
    Publication date: April 15, 2021
    Inventors: Satyam DWIVEDI, Henrik ASPLUND, Jonas MEDBO, Fredrik GUNNARSSON, Ali ZAIDI, Sara MODARRES RAZAVI
  • Patent number: 10809350
    Abstract: Methods and devices for performing hybrid fingerprinting/observed time difference of arrival (OTDOA) positioning are described. Fingerprinting information can be used to improve OTDOA results by using the fingerprinting information to generate OTDOA assistance information. The OTDOA assistance information is sent to a user equipment, which uses the OTDOA assistance information to perform reference signal time differences (RSTDs) measurements.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: October 20, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Di Shu, Sara Modarres Razavi, Kunpeng Qi, Arios Yu, Ali Zaidi
  • Publication number: 20200296681
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik GUNNARSSON, Sara MODARRES RAZAVI, Henrik RYDÉN, Meng WANG, Ali ZAIDI
  • Publication number: 20200241106
    Abstract: Methods and devices for performing hybrid fingerprinting/observed time difference of arrival (OTDOA) positioning are described. Fingerprinting information can be used to improve OTDOA results by using the fingerprinting information to generate OTDOA assistance information. The OTDOA assistance information is sent to a user equipment, which uses the OTDOA assistance information to perform reference signal time differences (RSTDs) measurements.
    Type: Application
    Filed: February 19, 2016
    Publication date: July 30, 2020
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Di SHU, Sara MODARRES RAZAVI, Kunpeng QI, Arios YU, Ali ZAIDI
  • Patent number: 10721015
    Abstract: A Radio Network Node (RNN) and a method for enabling an improved reception of Positioning Reference Signals (PRSs) at a communications device. The RNN and the communications device are operable in a wireless communications network. The RNN selects a first precoder and a second precoder for forming a first beam and a second beam, respectively, and obtains a precoding switching pattern relating to when the first precoder is to be applied to one or more first PRS symbols and when the second precoder is to be applied to one or more second PRS symbols. Further, the RNN transmits, to the communications device, the one or more first PRS symbols to which the first precoder is applied; and in accordance with the obtained precoding switching pattern, the RNN transmits, to the communications device, the one or more second PRS symbols to which the second precoder is applied.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: July 21, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi, Meng Wang
  • Patent number: 10708881
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: July 7, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
  • Patent number: 10673485
    Abstract: A method and a receiving node for determining Time Of Arrival (TOA) for a radio signal received from a transmitting node in a wireless network. The receiving node detects the received radio signal by cross-correlating the received radio signal with a predefined reference signal transmitted by the transmitting node, to obtain a Cross-Correlated Function (CCF). The receiving node then estimates a set of candidate TOAs for respective signal components of the cross-correlated signal, and determines a final TOA for the received radio signal based on the set of candidate TOAs.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: June 2, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi
  • Patent number: 10588078
    Abstract: Systems and methods relating to a remote wireless device for a cellular communications network are disclosed. In some embodiments, the remote wireless device is a wireless device that desires to establish a relay connection with a relay wireless device that has relay functionality. The remote wireless device includes a transceiver, a processor, and memory storing instructions executable by the processor whereby the relay wireless device is operable to rank a plurality of candidate relay wireless devices and to report a subset of the plurality of candidate relay wireless devices based on the ranking of the plurality of candidate relay wireless devices to a network node of the cellular communications network via the transceiver.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: March 10, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mats Folke, Johnny Karout, Xinghua Song, Stefano Sorrentino, Pontus Wallentin, Stefan Wänstedt, Ali Zaidi
  • Publication number: 20200015188
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 9, 2020
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik GUNNARSSON, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
  • Patent number: 10433276
    Abstract: A method, apparatus, and system are provided for facilitating positioning based on signal correlation function characteristic feedback. In an embodiment, the method may involve steps performed by a network node in communication with a 5 wireless communication device (WCD) and a plurality of base stations. The network node receives, from the WCD, location information including position reference signal (PRS) correlation function characteristics of a cross-correlation between a received downlink signal and a transmitted PRS for each base station from the plurality of base stations. The network node determines a position of the WCD using 0 the PRS correlation function characteristics. The WCD may initiate the transmission of the PRS correlation function characteristics on its own, or in response to a request to do so from the network node.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: October 1, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Gunnarsson, Sara Modarres Razavi, Henrik Rydén, Meng Wang, Ali Zaidi
  • Publication number: 20190200288
    Abstract: Systems and methods relating to a remote wireless device for a cellular communications network are disclosed. In some embodiments, the remote wireless device is a wireless device that desires to establish a relay connection with a relay wireless device that has relay functionality. The remote wireless device includes a transceiver, a processor, and memory storing instructions executable by the processor whereby the relay wireless device is operable to rank a plurality of candidate relay wireless devices and to report a subset of the plurality of candidate relay wireless devices based on the ranking of the plurality of candidate relay wireless devices to a network node of the cellular communications network via the transceiver.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 27, 2019
    Inventors: Mats Folke, Johnny Karout, Xinghua Song, Stefano Sorrentino, Pontus Wallentin, Stefan Wänstedt, Ali Zaidi
  • Patent number: 10270544
    Abstract: The disclosed embodiments relates to a method performed by an D2D capable UE (800) and also relates to the D2D capable UE (800) for determining link quality of a D2D signal or D2D channel. The method includes receiving (710) a D2D signal or channel transmitted from another D2D capable UE; if detection (720) of the D2D signal or channel is determined to be successful; identifying (730) the identity of the other D2D capable UE; measuring (740) received signal power on resources of the D2D signal or channel; measuring (750) signal strength indicator on resources of the D2D signal or channel or on other resources different from the resources of the D2D signal or channel; and determining (760) link quality based on the measured received signal power and based on the measured signal strength indicator.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: April 23, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ali Zaidi, Stefano Sorrentino
  • Publication number: 20190104431
    Abstract: A method performed by a wireless device for adapting measurement report resolution is disclosed. The method comprises performing a measurement, determining a measurement report resolution to be used, and sending a measurement report to the network node encoded based on the determined measurement report resolution. According to additional embodiments, prior to determining the measurement report resolution to be used, the wireless device informs the network node of the wireless device's capabilities of sending measurement reports encoded based on a plurality of different measurement report resolutions. According to additional embodiments, subsequent to informing the network node of the wireless device's capabilities, and prior to determining the measurement report resolution to be used, the wireless device receives a desired measurement report resolution from the network node.
    Type: Application
    Filed: September 23, 2016
    Publication date: April 4, 2019
    Inventors: Fredrik Gunnarsson, Yufei Blankenship, Sara Modarres Razavi, Henrik Rydén, Iana Siomina, Kai-Erik Sunell, Riikka Susitaival, Meng Wang, Ali Zaidi
  • Publication number: 20190089405
    Abstract: A method and a receiving node for determining Time Of Arrival (TOA) for a radio signal received from a transmitting node in a wireless network. The receiving node detects the received radio signal by cross-correlating the received radio signal with a predefined reference signal transmitted by the transmitting node, to obtain a Cross-Correlated Function (CCF). The receiving node then estimates a set of candidate TOAs for respective signal components of the cross-correlated signal, and determines a final TOA for the received radio signal based on the set of candidate TOAs.
    Type: Application
    Filed: March 30, 2016
    Publication date: March 21, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Rydén, Fredrik Gunnarsson, Sara Modarres Razavi, Ali Zaidi