Patents by Inventor Mehrnaz Afshang

Mehrnaz Afshang 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: 12041591
    Abstract: A wireless device (14, 400) or a radio network node (12, 700) is configured to communicate in a wireless communication network (10). The wireless device (14, 400) or radio node in this regard transmits or receives a signal on an Narrowband Internet-of-Things, NB-IoT, carrier (16). The NB-IoT carrier (16) is within a bandwidth of a New Radio, NR, carrier (22), has a frequency center (24) whose position satisfies a requirement on that position relative to a channel raster (26), and has two or more subcarriers which each align in frequency with a respective subcarrier of the NR carrier (22).
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: July 16, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mohammad Mozaffari, Mehrnaz Afshang, Yi-Pin Eric Wang
  • Patent number: 12021709
    Abstract: A method and apparatus for design and optimization of a network are described. A first deep neural network is used to obtain a function that represents a relationship between design parameters of the network and network performance metrics of the network. A second deep neural network is used to obtain a subset of one or more candidate network deployment configurations that optimize the performance metrics for the network. An optimal candidate network deployment configuration for the network is selected from the subset of candidate network deployment configurations wherein the optimal candidate network deployment configuration maximizes performance of the network as defined based on the performance metrics.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: June 25, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mohammad Mozaffari, Xingqin Lin, Talha Khan, Mehrnaz Afshang, Yun Chen
  • Publication number: 20240205057
    Abstract: According to some embodiments, a method performed by a wireless device comprises receiving a wireless signal Rk over all subcarriers allocated to the wireless device. The signal Rk comprises a phase tracking reference signal (PT-RS) on a subset of subcarriers allocated to the wireless device and the subset comprises at least one non-contiguous subcarrier. The method further comprises computing a de-inter-carrier interference (ICI) filter based on the PT-RS and a channel estimate using a convolutional matrix CR of the received signal Rk and applying the de-ICI filter to the received signal Rk to generate a de-ICI filtered signal.
    Type: Application
    Filed: December 23, 2023
    Publication date: June 20, 2024
    Inventors: Dennis Hui, Mehrnaz Afshang, Jung-Fu Cheng, Stephen Grant
  • Publication number: 20240179040
    Abstract: A method, system and apparatus for low complexity intercarrier interference (ICI) compensation algorithms and cyclic block phase tracking reference signal (PTRS) sequence design are disclosed. According to one aspect, a method in a network node includes generating a PTRS, having a PTRS sequence that is configured to lower a complexity of an ICI compensation algorithm. According to another aspect, a method in a wireless device (WD) includes determining an ICI compensation algorithm based at least in part on a PTRS having a PTRS sequence, and applying the determined ICI compensation algorithm to compensate for ICI.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 30, 2024
    Inventors: Jung-Fu CHENG, Mehrnaz AFSHANG, Stephen GRANT
  • Patent number: 11996961
    Abstract: There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving first signaling, the first signaling covering at least one allocation unit carrying Demodulation Reference Signaling, DMRS. Receiving includes performing Inter Carrier Interference, ICI, suppression for the at least one allocation unit carrying DMRS based on received DMRS. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: May 28, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Mehrnaz Afshang, Yuhang Liu, Stephen Grant
  • Patent number: 11888781
    Abstract: There is disclosed a method of operating a transmitting node in a millimeter-wave communication network. The method includes transmitting communication signaling in a transmission timing structure, the communication signaling including leading reference signaling in a leading time interval at the beginning of the transmission timing structure and including trailing reference signaling in a trailing time interval at the end of the timing structure. The leading reference signaling starts with a first reference signaling time-domain sequence, and the trailing reference signaling ending with the first reference time-domain signaling sequence. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: January 30, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Robert Baldemair, Mehrnaz Afshang, Rikke Apelfrojd, Jung-Fu Cheng, Ning He, Dennis Hui, Stefan Parkvall
  • Patent number: 11855814
    Abstract: According to some embodiments, a method performed by a wireless device comprises receiving a wireless signal Rk over all subcarriers allocated to the wireless device. The signal Rk comprises a phase tracking reference signal (PT-RS) on a subset of subcarriers allocated to the wireless device and the subset comprises at least one non-contiguous subcarrier. The method further comprises computing a de-inter-carrier interference (ICI) filter based on the PT-RS and a channel estimate using a convolutional matrix CR of the received signal Rk and applying the de-ICI filter to the received signal Rk to generate a de-ICI filtered signal.
    Type: Grant
    Filed: August 7, 2021
    Date of Patent: December 26, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Dennis Hui, Mehrnaz Afshang, Jung-Fu Cheng, Stephen Grant
  • Publication number: 20230413269
    Abstract: There is disclosed a method of operating a transmitting radio node in a wireless communication network. The method includes transmitting first control signaling in a control region, the first control signaling having at least a first signaling characteristic from a set of signaling characteristics in which the signaling characteristics of the set of signaling characteristics are associated to the control region. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 21, 2023
    Inventors: Jung-Fu CHENG, Dennis HUI, Mehrnaz AFSHANG
  • Publication number: 20230396468
    Abstract: A method, system and apparatus are disclosed for enabling inter carrier interference compensation for interleaved mapping from virtual to physical resource blocks. In one embodiment, a network node is configured to determine to configure the first signal to be located at a subcarrier except at an edge sub-carrier of a resource block, RB; transmit the configuration of the first signal to the WD; and receive a physical uplink shared channel, PUSCH, signaling and the first signal from the WD based at least in part on the determined configuration. In one embodiment, a WD is configured to perform a de-inter-carrier-interference (de-ICI) filter estimation on a first received signal and a second received signal; apply a de-ICI filter to a third received signal, the de-ICI filter being based on the de-ICI filter estimation; and after the application of the de-ICI filter, de-interleaved map and demodulate the third received signal.
    Type: Application
    Filed: October 15, 2021
    Publication date: December 7, 2023
    Inventors: Jung-Fu CHENG, Mehrnaz AFSHANG, Dennis HUI, Stephen GRANT
  • Publication number: 20230388196
    Abstract: A method and apparatus for design and optimization of a network are described. A first deep neural network is used to obtain a function that represents a relationship between design parameters of the network and network performance metrics of the network. A second deep neural network is used to obtain a subset of one or more candidate network deployment configurations that optimize the performance metrics for the network. An optimal candidate network deployment configuration for the network is selected from the subset of candidate network deployment configurations wherein the optimal candidate network deployment configuration maximizes performance of the network as defined based on the performance metrics.
    Type: Application
    Filed: December 11, 2020
    Publication date: November 30, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mohammad MOZAFFARI, Xingqin LIN, Talha KHAN, Mehrnaz AFSHANG, Yun CHEN
  • Publication number: 20230379123
    Abstract: A method performed by a User Equipment (UE) for handling a Control Resource Set (CORESET) from a network node in a wireless communications network is provided. The UE operates with a reduced bandwidth. The UE detects a CORESET from the network node, and that a bandwidth of the CORESET is larger than the bandwidth of the UE. Physical Downlink Control Channel (PDCCH) candidates are transmitted in the CORESET. The UE determines which part of the CORESET to skip, to make the bandwidth of the CORESET equal or smaller than the bandwidth of the UE, such that the UE is capable of receiving the CORESET. The part of the CORESET to be skipped is determined based on a predicted decoding performance of the PDCCH candidates in the CORESET.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 23, 2023
    Inventors: Mohammad MOZAFFARI, Yi-Pin Eric WANG, Kittipong KITTICHOKECHAI, Mehrnaz AFSHANG, Yutao SUI, Zhilan XIONG, Saeedeh Moloudi
  • Publication number: 20230379757
    Abstract: A method performed by a User Equipment (UE) for handling a Synchronization Signal Block (SSB) from a network node in a wireless communications network is provided. The UE operates with a reduced bandwidth. The UE detects an SSB from the network node, and that a bandwidth of the SSB is larger than the bandwidth of the UE. The UE determines which part of the SSB to skip to make the bandwidth of the SSB equal or smaller than the bandwidth of the UE, such that the UE is capable of receiving the SSB. The part of the SSB to be skipped is determined based on a predicted decoding performance of the SSB.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 23, 2023
    Inventors: Mohammad MOZAFFARI, Yi-Pin Eric WANG, Kittipong KITTICHOKECHAI, Mehrnaz AFSHANG, Sandeep Narayanan KADAN VEEDU, Zhilan XIONG
  • Patent number: 11824691
    Abstract: There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving first signaling and second signaling, wherein the first signaling includes first Phase Tracking Reference Signaling, PT-RS, on a first set of subcarriers, and the second signaling includes second PT-RS on a second set of subcarriers, wherein the first set of subcarriers is non-overlapping with the second set of subcarriers, wherein receiving the first signaling is based on estimating a phase noise for the first signaling based on the first PT-RS and the second PT-RS. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: November 21, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Mehrnaz Afshang, Yuhang Liu, Stephen Grant
  • Patent number: 11824803
    Abstract: There is disclosed a method of operating a receiving radio node in a wireless communication network. The method includes receiving first signaling and second signaling, the first signaling including first Phase Tracking Reference Signaling, PT-RS, on a first set of subcarriers, and the second signaling including second PT-RS on a second set of subcarriers, the first set of subcarriers being non-overlapping with the second set of subcarriers. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: November 21, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Stephen Grant, Mehrnaz Afshang, Yuhang Liu
  • Publication number: 20230344692
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network, the method including communicating based on a signaling structure, the signaling structure including a number R of long symbols and/or a number Nsym of regular symbols, wherein R and/or Nsym is based on the subcarrier spacing associated to the signaling structure and/or a cyclic prefix length of a long symbol and/or a cyclic prefix length of a regular symbol. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: June 27, 2023
    Publication date: October 26, 2023
    Inventors: Mehrnaz AFSHANG, Mohammad MOZAFFARI, Jung-Fu CHENG, Dennis HUI
  • Patent number: 11792054
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network. The method includes communicating utilising signaling, wherein communicating utilising signaling is based on performing pulse-shaping pertaining to the signaling. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 17, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Mehrnaz Afshang, Ning He, Dennis Hui
  • Patent number: 11792796
    Abstract: There is disclosed a method of operating a transmitting radio node in a wireless communication network. The method includes transmitting first control signaling in a control region, the first control signaling having at least a first signaling characteristic from a set of signaling characteristics in which the signaling characteristics of the set of signaling characteristics are associated to the control region. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: October 17, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Jung-Fu Cheng, Dennis Hui, Mehrnaz Afshang
  • Publication number: 20230327832
    Abstract: According to some embodiments, a method performed by a wireless device comprises receiving a wireless signal Rk over all subcarriers allocated to the wireless device. The signal Rk comprises a phase tracking reference signal (PT-RS) on a subset of subcarriers allocated to the wireless device. The method further comprises computing a de-inter-carrier interference (ICI) filter based on a cross correlation of the PT-RS and one or more additional subcarriers and applying the de-ICI filter to the received signal Rk to generate a de-ICI filtered signal.
    Type: Application
    Filed: August 9, 2021
    Publication date: October 12, 2023
    Inventors: Mehrnaz Afshang, Dennis Hui, Jung-Fu Cheng, Stephen Grant
  • Publication number: 20230299911
    Abstract: There is disclosed a method of operating a transmitting radio node in a wireless communication network, the method including transmitting reference signaling based on a reference pilot sequence, the reference pilot sequence being one of a set of reference pilot sequences, at least one reference pilot sequence of the set being a subsequence of another reference pilot sequence of the set. The disclosure also pertains to related devices and methods.
    Type: Application
    Filed: April 28, 2023
    Publication date: September 21, 2023
    Inventors: Dennis HUI, Jung-Fu CHENG, Mehrnaz AFSHANG
  • Patent number: 11750428
    Abstract: There is disclosed a method of operating a radio node in a wireless communication network, the method including communicating based on a signaling structure, the signaling structure including a number R of long symbols and/or a number Nsym of regular symbols, wherein R and/or Nsym is based on the subcarrier spacing associated to the signaling structure and/or a cyclic prefix length of a long symbol and/or a cyclic prefix length of a regular symbol. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: September 5, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Mehrnaz Afshang, Mohammad Mozaffari, Jung-Fu Cheng, Dennis Hui