Patents by Inventor Junfeng JIE

Junfeng JIE 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).

  • Device and method for downlink gain compensation as well as radio unit comprising the device
    Patent number: 12301173
    Abstract: Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-distortion circuit is configured to generate and apply a pre-distortion to an input signal. The digital gain adjuster is configured to apply an adjustable gain to an output signal from the pre-distortion circuit. The gain determiner is configured to determine a gain difference between a target downlink gain and current downlink gain. The first gain controller is configured to control the digital gain adjuster based on the gain difference. A radio unit comprising the device is also disclosed.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: May 13, 2025
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Peng Liu, Yahui Liu, Junfeng Jie, Gan Wen, Guangfeng Liu
  • Device and Method for Downlink Gain Compensation As Well As Radio Unit Comprising the Device
    Publication number: 20220224291
    Abstract: Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-distortion circuit is configured to generate and apply a pre-distortion to an input signal. The digital gain adjuster is configured to apply an adjustable gain to an output signal from the pre-distortion circuit. The gain determiner is configured to determine a gain difference between a target downlink gain and current downlink gain. The first gain controller is configured to control the digital gain adjuster based on the gain difference. A radio unit comprising the device is also disclosed.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 14, 2022
    Inventors: Peng Liu, Yahui LIU, Junfeng JIE, Gan WEN, Guangfeng LIU
  • Device and method for downlink gain compensation as well as radio unit comprising the device
    Patent number: 11296658
    Abstract: Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-distortion circuit is configured to generate and apply a pre-distortion to an input signal. The digital gain adjuster is configured to apply an adjustable gain to an output signal from the pre-distortion circuit. The gain determiner is configured to determine a gain difference between a target downlink gain and current downlink gain. The first gain controller is configured to control the digital gain adjuster based on the gain difference. A radio unit comprising the device is also disclosed.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: April 5, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Peng Liu, Yahui Liu, Junfeng Jie, Gan Wen, Guangfeng Liu
  • Method and device for timing alignment
    Patent number: 11057257
    Abstract: A method and device for timing alignment are disclosed. The method includes widening spectra of two signals for timing misalignment estimation; performing cross-correlation between the two spectrum-widened signals; and estimating the timing misalignment between the two signals according to a result of the cross-correlation. Therefore, an accurate time alignment result will be obtained with low complexity. Furthermore, it will be appropriate for all types of signals including separated multi-carrier signals.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: July 6, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Peng Liu, Junfeng Jie
  • METHOD AND DEVICE FOR TIMING ALIGNMENT
    Publication number: 20200244506
    Abstract: A method and device for timing alignment are disclosed. The method includes widening spectra of two signals for timing misalignment estimation; performing cross-correlation between the two spectrum-widened signals; and estimating the timing misalignment between the two signals according to a result of the cross-correlation. Therefore, an accurate time alignment result will be obtained with low complexity. Furthermore, it will be appropriate for all types of signals including separated multi-carrier signals.
    Type: Application
    Filed: September 18, 2017
    Publication date: July 30, 2020
    Inventors: Peng LIU, Junfeng JIE
  • Device and Method for Downlink Gain Compensation as well as Radio Unit Comprising the Device
    Publication number: 20200177139
    Abstract: Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-distortion circuit is configured to generate and apply a pre-distortion to an input signal. The digital gain adjuster is configured to apply an adjustable gain to an output signal from the pre-distortion circuit. The gain determiner is configured to determine a gain difference between a target downlink gain and current downlink gain. The first gain controller is configured to control the digital gain adjuster based on the gain difference. A radio unit comprising the device is also disclosed.
    Type: Application
    Filed: August 13, 2018
    Publication date: June 4, 2020
    Inventors: Peng LIU, Yahui LIU, Junfeng JIE, Gan WEN, Guangfeng LIU