Patents by Inventor Ziyang Ju
Ziyang Ju 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: 20240088969Abstract: This disclosure relates to techniques for a wireless device to perform channel state information reporting. The wireless device may receive channel state information reporting configuration information. The channel state information reporting configuration information may include an indication to use a wideband precoding matrix indicator format for 3GPP release 16 type II channel state information reporting. The wireless device may perform channel state information reporting using a different reporting configuration than 3GPP release 16 type II channel state information reporting using a wideband precoding matrix indicator format based at least in part on the channel state information reporting configuration information. The wireless device may also or alternatively perform 3GPP type I channel state information reporting using a unified spatial basis selection framework for rank indicators of 3 and 4 for any number of channel state information reference signal ports.Type: ApplicationFiled: November 6, 2023Publication date: March 14, 2024Inventors: Haitong Sun, Yushu Zhang, Wei Zeng, Dawei Zhang, Ghaith N. Hattab, Ismael Gutierrez Gonzalez, Anchit Malhotra, Louay Jalloul, David Neumann, Ziyang Ju
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Patent number: 11909532Abstract: Techniques discussed herein can facilitate successful decoding of Physical Downlink Shared Channel (PDSCH) based on a reduced number of retransmissions. Based on a given PDSCH, embodiments discussed herein can communicate feedback (e.g., Hybrid Automatic Repeat reQuest (HARQ) feedback, Channel State Information (CSI) feedback) that indicates an amount of additional information that can allow a User Equipment (UE) to successfully decode the PDSCH. In some embodiments, the feedback can indicate a requested Redundancy Version (RV) sequence that can allow the UE to successfully decode the PDSCH. In other embodiments, the feedback can indicate the amount of additional information, based on which a receiving Base Station (BS) can select a RV sequence.Type: GrantFiled: April 8, 2020Date of Patent: February 20, 2024Assignee: Apple Inc.Inventors: Jie Cui, Weidong Yang, Yuchul Kim, Hong He, Chunxuan Ye, Wei Zeng, Dawei Zhang, Chunhai Yao, Oghenekome Oteri, Yushu Zhang, Yang Tang, Ismael Gutierrez Gonzalez, Haitong Sun, Ziyang Ju
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Publication number: 20230300641Abstract: Some aspects of this disclosure relate to apparatuses and methods for implementing channel state information (CSI) reporting that includes a stale CSI report. Based at least in part on a CSI reporting configuration, a user equipment (UE) performs CSI measurements during a current reference time period, and generates one or more CSI reports including at least a stale CSI report. A stale CSI report is generated based at least in part on CSI measurements performed prior to the current reference time period. The UE further generates an uplink message including the one or more CSI reports, and transmits the uplink message to the base station under a reporting setting determined by the CSI reporting configuration.Type: ApplicationFiled: August 5, 2020Publication date: September 21, 2023Applicant: Apple Inc.Inventors: David NEUMANN, Dawei ZHANG, Ghaith N. HATTAB, Haitong SUN, Ismael Gutierrez GONZALEZ, Wei ZENG, Yeong-Sun HWANG, Yushu ZHANG, Ziyang JU
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Publication number: 20230156502Abstract: An approach is described for a user equipment (UE) to receive a channel state information (CSI) reporting configuration message from a source device of a first cell and receive a channel state information reference signal (CSI-RS) from a second cell via the source device. The UE determines a first number of CSI-RS resources of a first time slot duration corresponding to the first cell, a second number of CSI-RS resources of a second time slot duration corresponding to the second cell, an overall time slot duration based on the first and the second time slot duration, an overall number of CSI-RS resources of the overall time slot duration based at least on the first and the second number of CSI-RS resource, generates a capability report at least based on the overall number of CSI-RS resource, and transmits the capability report to the source device.Type: ApplicationFiled: August 5, 2020Publication date: May 18, 2023Applicant: Apple Inc.Inventors: Haitong SUN, David NEUMANN, Dawei ZHANG, Ghaith N. HATTAB, Ismael Gutierrez GONZALEZ, Wei ZENG, Yeong-Sun HWANG, Yushu ZHANG, Ziyang JU
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Publication number: 20230028029Abstract: Techniques discussed herein can facilitate successful decoding of Physical Downlink Shared Channel (PDSCH) based on a reduced number of retransmissions. Based on a given PDSCH, embodiments discussed herein can communicate feedback (e.g., Hybrid Automatic Repeat reQuest (HARQ) feedback, Channel State Information (CSI) feedback) that indicates an amount of additional information that can allow a User Equipment (UE) to successfully decode the PDSCH. In some embodiments, the feedback can indicate a requested Redundancy Version (RV) sequence that can allow the UE to successfully decode the PDSCH. In other embodiments, the feedback can indicate the amount of additional information, based on which a receiving Base Station (BS) can select a RV sequence.Type: ApplicationFiled: April 8, 2020Publication date: January 26, 2023Inventors: Jie Cui, Weidong Yang, Yuchul Kim, Hong He, Chunxuan Ye, Wei Zeng, Dawei Zhang, Chunhai Yao, Oghenekome Oteri, Yushu Zhang, Yang Tang, Ismael Gutierrez Gonzalez, Haitong Sun, Ziyang Ju
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Publication number: 20230016376Abstract: This disclosure relates to techniques for performing wireless communications including exchanging information related to capability of processing reference signals. A user equipment device may provide capability information to a network. The capability information may indicate a number of reference signal resources that the user equipment device can process in a slot or other defined period of time. The user equipment device and the network may share a common set of definitions, counting rules, and approaches for interpreting the capability information. The network may configure reference signals for the user equipment device.Type: ApplicationFiled: March 31, 2021Publication date: January 19, 2023Inventors: Haitong Sun, Gokhan Ozer, Yeong-Sun Hwang, Yushu Zhang, Wei Zeng, Dawei Zhang, Manasa Raghavan, Jie Cui, Weidong Yang, Amir Aminzadeh Gohari, Ghaith N. Hattab, Yang Tang, Ismael Gutierrez Gonzalez, Ziyang Ju
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Publication number: 20220302977Abstract: A user equipment (UE) is configured to report capabilities to as network. The UE transmits UE capabilities for channel state information (CSI) reporting to a base station, wherein the UE capabilities include a CSI-RS-resource-indicator(CRI)-rank indicator(RI)-channel quality indicator (CQI) reporting capability and a further CRI-RI-CQI reporting capability and receives a CSI report configuration from the base station, wherein the CSI report configuration is based on the UE capabilities.Type: ApplicationFiled: October 14, 2020Publication date: September 22, 2022Inventors: Haitong SUN, Chunhai YAO, Chunxuan YE, Dawei ZHANG, Dietmar GRADL, Hong HE, Hongbo YAN, Ismael Gutierrez GONZALEZ, Sigen YE, Wei ZENG, Yushu ZHANG, Ziyang JU
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Patent number: 11438774Abstract: The disclosure relates to a mobile communication device circuitry, comprising: a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement; and a processor configured to process the plurality of CSI measurement triggers within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement trigger.Type: GrantFiled: May 11, 2017Date of Patent: September 6, 2022Assignee: Intel CorporationInventors: Yeong-Sun Hwang, Ziyang Ju, Anchit Malhotra
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Patent number: 11405079Abstract: This disclosure relates to a channel state information, CSI, acquisition circuitry, configured to: determine at least one channel covariance matrix estimate and interference-and-noise covariance matrix estimate based on at least one channel state information reference signal, CSI-RS, resource; select a restricted number of rank indicator, RI, hypotheses from a set of RI hypotheses for running a joint rank indicator-precoding matrix indicator, RI-PMI, search on the CSI-RS based channel covariance matrix estimate and interference-and-noise covariance matrix estimate to select an optimal RI value and associated PMI value, wherein the restricted number of RI hypotheses is in accordance with a run-time estimated CSI acquisition capability of the CSI acquisition circuitry; and execute the joint RI-PMI search based on the selected RI hypotheses.Type: GrantFiled: August 8, 2019Date of Patent: August 2, 2022Assignee: Intel CorporationInventors: Zhibin Yu, Ziyang Ju, Michael Ruder
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Publication number: 20220052732Abstract: This disclosure relates to techniques for a wireless device to perform channel state information reporting. The wireless device may receive channel state information reporting configuration information. The channel state information reporting configuration information may include an indication to use a wideband precoding matrix indicator format for 3GPP release 16 type II channel state information reporting. The wireless device may perform channel state information reporting using a different reporting configuration than 3GPP release 16 type II channel state information reporting using a wideband precoding matrix indicator format based at least in part on the channel state information reporting configuration information. The wireless device may also or alternatively perform 3GPP type I channel state information reporting using a unified spatial basis selection framework for rank indicators of 3 and 4 for any number of channel state information reference signal ports.Type: ApplicationFiled: February 12, 2020Publication date: February 17, 2022Inventors: Haitong Sun, Yushu Zhang, Wei Zeng, Dawei Zhang, Ghaith N. Hattab, Ismael Gutierrez Gonzalez, Anchit Malhotra, Louay Jalloul, David Neumann, Ziyang Ju
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Publication number: 20210282034Abstract: The disclosure relates to a mobile communication device circuitry, comprising: a radio receiver configured to receive a plurality of channel state information (CSI) measurement requests, each CSI measurement request triggering a CSI measurement; and a processor configured to process the plurality of CSI measurement triggers within a CSI reporting period according to a CSI computation scheduling which is based on a multi-service priority queue of multi-size jobs, each job corresponding to a respective CSI measurement trigger.Type: ApplicationFiled: May 11, 2017Publication date: September 9, 2021Inventors: Yeong-Sun Hwang, Ziyang Ju, Anchit Malhotra
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Patent number: 11099890Abstract: A device and a method for job scheduling at a signal processing component with limited queue availability, in response to a request for one or more new jobs, the method comprising: calculating a metric for each job in the queue and a request metric for the one or more new jobs, wherein each job's metric is based on a difference between an estimate output of executing the job in current conditions and a previous output of the job; determining a minimum metric from the metrics calculated for the jobs in the queue; and comparing the minimum metric to the request metrics to determine whether to schedule to new job for execution.Type: GrantFiled: December 13, 2016Date of Patent: August 24, 2021Assignee: Intel CorporationInventors: Ismael Gutierrez, Stefan Franz, Ziyang Ju, Rohit Bahl
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Publication number: 20210250069Abstract: This disclosure relates to a channel state information, CSI, acquisition circuitry, configured to: determine at least one channel covariance matrix estimate and interference-and-noise covariance matrix estimate based on at least one channel state information reference signal, CSI-RS, resource; select a restricted number of rank indicator, RI, hypotheses from a set of RI hypotheses for running a joint rank indicator-precoding matrix indicator, RI-PMI, search on the CSI-RS based channel covariance matrix estimate and interference-and-noise covariance matrix estimate to select an optimal RI value and associated PMI value, wherein the restricted number of RI hypotheses is in accordance with a run-time estimated CSI acquisition capability of the CSI acquisition circuitry; and execute the joint RI-PMI search based on the selected RI hypotheses.Type: ApplicationFiled: August 8, 2019Publication date: August 12, 2021Inventors: Zhibin Yu, Ziyang Ju, Michael Ruder
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Patent number: 11025367Abstract: A signal processing device includes a determiner configured to determine if a codeword included in a data signal corresponds to a reference codeword included in a first set of reference codewords or a second set of reference codewords; a first estimator configured to estimate a first channel quality metric value for the data signal based on a first channel quality metric, if the codeword corresponds to a reference codeword included in the first set of reference codewords, wherein the first channel quality value is smaller than a reference channel quality metric value for the data signal, wherein the reference channel quality metric value for the data signal results from a channel quality estimation based on a predetermined channel quality metric; and a second estimator configured to estimate a second channel quality metric value for the data signal based on a second channel quality metric, if the codeword corresponds to a reference codeword included in the second set of reference codewords, wherein the secondType: GrantFiled: December 7, 2017Date of Patent: June 1, 2021Assignee: Intel IP CorporationInventors: Yeong-Sun Hwang, Franz Eder, Matthias Muennich, Ziyang Ju, Carlo Tosetti, Anchit Malhotra
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Patent number: 11012132Abstract: A method and apparatus for three-dimensional beamforming, which include an estimation of a channel spatial coherence for a beam space of a device based on a plurality of non-precoded reference signals such that the beam space includes a plurality of beam subspaces based on the estimated channel spatial coherence and each of the plurality of beam subspaces include a beam direction representative of a respective beam subspace of the plurality of beam subspaces. Furthermore, a selection a beam subspace of the plurality of beam subspaces based on a channel quality metric of the beam direction that is representative of the beam subspace is included.Type: GrantFiled: March 12, 2018Date of Patent: May 18, 2021Assignee: Apple Inc.Inventors: Yeong-Sun Hwang, Franz Eder, Ziyang Ju
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Patent number: 10574368Abstract: Devices and methods for determining a wideband Channel Quality Indicator (wbCQI) and a plurality of sub-band Channel Quality Indicators (CQIs) for reporting to a network, including deriving a first metric for a wideband and each of a plurality of sub-bands from a received signal; converting the wideband first metric and the plurality of sub-band first metrics to a wideband CQI and a plurality of sub-band CQIs; determining a skewness of the plurality of sub-band CQIs to the wideband CQI by comparing each of the plurality of sub-band CQIs to the wideband CQI; modifying the wideband CQI when a negative skewness is determined and recomputing the plurality of sub-band CQIs based on the modified wideband CQI; and providing the modified wideband CQI and the plurality of recomputed sub-band CQIs to the network.Type: GrantFiled: June 29, 2018Date of Patent: February 25, 2020Assignee: Intel CorporationInventors: Gary Chang, Ismael Gutierrez, Sriram Sridharan, Ziyang Ju
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Publication number: 20200052755Abstract: A method and apparatus for three-dimensional beamforming, which include an estimation of a channel spatial coherence for a beam space of a device based on a plurality of non-precoded reference signals such that the beam space includes a plurality of beam subspaces based on the estimated channel spatial coherence and each of the plurality of beam subspaces include a beam direction representative of a respective beam subspace of the plurality of beam subspaces. Furthermore, a selection a beam subspace of the plurality of beam subspaces based on a channel quality metric of the beam direction that is representative of the beam subspace is included.Type: ApplicationFiled: March 12, 2018Publication date: February 13, 2020Inventors: Yeong-Sun HWANG, Franz EDER, Ziyang JU
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Publication number: 20200022086Abstract: This disclosure relates to a User Equipment (UE), comprising: a transceiver, configured to receive a Downlink (DL) transmission from a base station (BS) and to transmit an Uplink (UL) transmission to the BS; and a controller, configured to determine a decoding confidence of the BS based on a decoding confidence metric with respect to the received DL transmission and to generate a power scaling for the UL transmission based on the determined decoding confidence, wherein the transceiver is configured to transmit the UL transmission based on the power scaling generated by the controller.Type: ApplicationFiled: January 15, 2018Publication date: January 16, 2020Inventors: Zhibin Yu, Narayan Vishwanathan, Wei Jiang, Thomas Fliess, Ziyang Ju
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Publication number: 20200007246Abstract: Devices and methods for determining a wideband Channel Quality Indicator (wbCQI) and a plurality of sub-band Channel Quality Indicators (CQIs) for reporting to a network, including deriving a first metric for a wideband and each of a plurality of sub-bands from a received signal; converting the wideband first metric and the plurality of sub-band first metrics to a wideband CQI and a plurality of sub-band CQIs; determining a skewness of the plurality of sub-band CQIs to the wideband CQI by comparing each of the plurality of sub-band CQIs to the wideband CQI; modifying the wideband CQI when a negative skewness is determined and recomputing the plurality of sub-band CQIs based on the modified wideband CQI; and providing the modified wideband CQI and the plurality of recomputed sub-band CQIs to the network.Type: ApplicationFiled: June 29, 2018Publication date: January 2, 2020Inventors: Gary Chang, Ismael Gutierrez, Sriram Sridharan, Ziyang Ju
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Publication number: 20190181981Abstract: A signal processing device includes a determiner configured to determine if a codeword included in a data signal corresponds to a reference codeword included in a first set of reference codewords or a second set of reference codewords; a first estimator configured to estimate a first channel quality metric value for the data signal based on a first channel quality metric, if the codeword corresponds to a reference codeword included in the first set of reference codewords, wherein the first channel quality value is smaller than a reference channel quality metric value for the data signal, wherein the reference channel quality metric value for the data signal results from a channel quality estimation based on a predetermined channel quality metric; and a second estimator configured to estimate a second channel quality metric value for the data signal based on a second channel quality metric, if the codeword corresponds to a reference codeword included in the second set of reference codewords, wherein the secondType: ApplicationFiled: December 7, 2017Publication date: June 13, 2019Inventors: Yeong-Sun Hwang, Franz Eder, Matthias Muennich, Ziyang Ju, Carlo Tosetti, Anchit Malhotra