Patents by Inventor Zae Yong Choi
Zae Yong Choi 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: 20220408356Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may wake up from a sleep mode of a discontinuous reception (DRX) cycle based on receipt of uplink data. The UE may determine if an elapsed time between a prior receipt of one or more reference signals and an uplink transmission to the base station after waking up from the sleep mode is less than a threshold time value. If the elapsed time is less than the threshold time value, the UE may transmit an uplink transmission associated with the received uplink data prior to receiving one or more reference signals that may be used to update transmission parameters for uplink transmissions. If the elapsed time is at or above the threshold value, the UE may wait to receive the one or more reference signals and update the transmission parameters prior to the uplink transmission.Type: ApplicationFiled: June 30, 2022Publication date: December 22, 2022Inventors: Arnaud Meylan, Paolo Minero, Zae Yong Choi, Scott Hoover, Zhong Fan, Amir Aminzadeh Gohari
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Patent number: 11463216Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive a first configuration indicating for the UE to communicate with the base station using a set of receive ports. The UE may transmit, according to the first configuration in a first time interval associated with a first power state of the UE, sounding reference signals (SRSs) on a set of transmit ports corresponding to the set of receive ports. The UE may then communicate using less than all of the set of transmit ports for the SRSs based on determining to operate in a reduced power state. The UE may then receive, based on communicating using less than all of the set of transmit ports for the SRSs, a second configuration indicating for the UE to communicate with the base station using a first subset of receive ports.Type: GrantFiled: December 4, 2020Date of Patent: October 4, 2022Assignee: QUALCOMM IncorporatedInventors: James Francis Geekie, Mahbod Ghelichi, Chun-Hao Hsu, Zae Yong Choi, Yung-Yih Jian, Alexei Yurievitch Gorokhov
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Patent number: 11405864Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may wake up from a sleep mode of a discontinuous reception (DRX) cycle based on receipt of uplink data. The UE may determine if an elapsed time between a prior receipt of one or more reference signals and an uplink transmission to the base station after waking up from the sleep mode is less than a threshold time value. If the elapsed time is less than the threshold time value, the UE may transmit an uplink transmission associated with the received uplink data prior to receiving one or more reference signals that may be used to update transmission parameters for uplink transmissions. If the elapsed time is at or above the threshold value, the UE may wait to receive the one or more reference signals and update the transmission parameters prior to the uplink transmission.Type: GrantFiled: July 21, 2020Date of Patent: August 2, 2022Assignee: QUALCOMM IncorporatedInventors: Arnaud Meylan, Paolo Minero, Zae Yong Choi, Scott Hoover, Zhong Fan, Amir Aminzadeh Gohari
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Publication number: 20220182198Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive a first configuration indicating for the UE to communicate with the base station using a set of receive ports. The UE may transmit, according to the first configuration in a first time interval associated with a first power state of the UE, sounding reference signals (SRSs) on a set of transmit ports corresponding to the set of receive ports. The UE may then communicate using less than all of the set of transmit ports for the SRSs based on determining to operate in a reduced power state. The UE may then receive, based on communicating using less than all of the set of transmit ports for the SRSs, a second configuration indicating for the UE to communicate with the base station using a first subset of receive ports.Type: ApplicationFiled: December 4, 2020Publication date: June 9, 2022Inventors: James Francis Geekie, Mahbod Ghelichi, Chun-Hao Hsu, Zae Yong Choi, Yung-Yih Jian, Alexei Yurievitch Gorokhov
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Publication number: 20220053595Abstract: Apparatus, methods, and computer-readable media for facilitating multi-tasking and smart location selection during connected-mode discontinuous reception (CDRX) mode are disclosed herein. Example techniques disclosed herein enable a UE to perform multiple tasks during a same SSBS to reduce the number of wake-up SSBSs. For example, disclosed techniques enable a UE to perform RLM tasks and loop tracking tasks during a first SSBS and thereby reduce the number of wake-up SSBSs. In some examples, the UE may also perform the search task or the measurement task during the same first SSBS and, thereby, further reduce the number of wake-up SSBSs. Example techniques disclosed herein may also enable the UE to select which SSBS occurrences to wake-up for during the OFF duration of the CDRX cycle.Type: ApplicationFiled: October 28, 2021Publication date: February 17, 2022Inventors: Ting KONG, Jafar MOHSENI, Zae Yong CHOI, Yongle WU, Raghu Narayan CHALLA, Alexei Yurievitch GOROKHOV, Yong LI
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Patent number: 11172533Abstract: Apparatus, methods, and computer-readable media for facilitating multi-tasking and smart location selection during connected-mode discontinuous reception (CDRX) mode are disclosed herein. Example techniques disclosed herein enable a UE to perform multiple tasks during a same SSBS to reduce the number of wake-up SSBSs. For example, disclosed techniques enable a UE to perform RLM tasks and loop tracking tasks during a first SSBS and thereby reduce the number of wake-up SSBSs. In some examples, the UE may also perform the search task or the measurement task during the same first SSBS and, thereby, further reduce the number of wake-up SSBSs. Example techniques disclosed herein may also enable the UE to select which SSBS occurrences to wake-up for during the OFF duration of the CDRX cycle.Type: GrantFiled: August 29, 2019Date of Patent: November 9, 2021Assignee: QUALCOMM IncorporatedInventors: Ting Kong, Jafar Mohseni, Zae Yong Choi, Yongle Wu, Raghu Narayan Challa, Alexei Yurievitch Gorokhov, Yong Li
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Publication number: 20210068193Abstract: Apparatus, methods, and computer-readable media for facilitating multi-tasking and smart location selection during connected-mode discontinuous reception (CDRX) mode are disclosed herein. Example techniques disclosed herein enable a UE to perform multiple tasks during a same SSBS to reduce the number of wake-up SSBSs. For example, disclosed techniques enable a UE to perform RLM tasks and loop tracking tasks during a first SSBS and thereby reduce the number of wake-up SSBSs. In some examples, the UE may also perform the search task or the measurement task during the same first SSBS and, thereby, further reduce the number of wake-up SSBSs. Example techniques disclosed herein may also enable the UE to select which SSBS occurrences to wake-up for during the OFF duration of the CDRX cycle.Type: ApplicationFiled: August 29, 2019Publication date: March 4, 2021Inventors: Ting KONG, Jafar MOHSENI, Zae Yong CHOI, Yongle WU, Raghu Narayan CHALLA, Alexei Yurievitch GOROKHOV, Yong LI
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Publication number: 20200367171Abstract: Methods, systems, and devices for wireless communications are described to enable a user equipment (UE) to employ a discretionary on mode (e.g., powering receiver circuitry) in order to conserve power during discontinuous reception. The UE may discretionarily cut down an on time duration by delaying wake-up (e.g., powering on receiver circuitry) or by sleeping (e.g., powering down receiver circuitry) during portions of an on duration. The UE may also discretionarily skip one or more on durations. The UE may use hybrid automatic repeat request retransmissions to receive information that may be missed when sleeping during a configured on duration. The UE may evaluate one or more conditions in order to determine whether to employ a discretionary on mode. For example, the UE may determine to conserve power based on one or more of a data traffic type, a battery level, a channel condition, a retransmission policy, or physical layer activities.Type: ApplicationFiled: April 24, 2020Publication date: November 19, 2020Inventors: Shiau-He Tsai, Zae Yong Choi, Raghu Narayan Challa, Alexei Yurievitch Gorokhov, Jafar Mohseni
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Patent number: 9843424Abstract: Aspects of mitigating throughput degradation during wireless communication include determining that a first transmission signal fails decoding at a network entity due to transmit (TX) blanking when a user equipment (UE) supports dual subscriber identity module dual active (DSDA) and is operating in hybrid automatic repeat request (HARQ) with incremental redundancy; determining whether a first retransmission signal for the first transmission signal fails decoding at the network entity; and retransmitting the first transmission signal as a new transmission signal when a determination is made that the first retransmission signal for the first transmission signal fails decoding at the network entity.Type: GrantFiled: January 19, 2016Date of Patent: December 12, 2017Assignee: QUALCOMM IncorporatedInventors: Zae Yong Choi, Omesh Kumar Handa, Yuan Wang, Rami Alnatsheh, Syam Pavan Vadapalli, Murali Paravath Menon
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Patent number: 9608764Abstract: In an aspect, this disclosure provides for determining a power imbalance between a first radio frequency (RF) carrier and a second RF carrier of a dedicated physical control channel for uplink transmission, determining whether the power imbalance is greater than a power imbalance threshold, and blocking data transmission on one of the first RF carrier or the second RF carrier when the power imbalance is greater than the power imbalance threshold.Type: GrantFiled: July 9, 2015Date of Patent: March 28, 2017Assignee: QUALCOMM IncorporatedInventors: Zae Yong Choi, Omesh Kumar Handa, Rami Hmeidan Alnatsheh, Chaitanya Shah, Yuan Wang, Luna Sapna D'Souza
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Patent number: 9491709Abstract: Aspects of the present disclosure provide an apparatus and method of utilizing a filtered transmit power margin calculation, rather than an instantaneous Tx power, to determine whether or not to trigger an Event 6D report. The filtered transmit power margin may take into account not only the user equipment's transmit power and the maximum transmit power level, but in addition, a received maximum power reduction value.Type: GrantFiled: June 20, 2014Date of Patent: November 8, 2016Assignee: QUALCOMM IncorporatedInventors: Zae Yong Choi, Yi Zhang
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Publication number: 20160315744Abstract: Aspects of mitigating throughput degradation during wireless communication include determining that a first transmission signal fails decoding at a network entity due to transmit (TX) blanking when a user equipment (UE) supports dual subscriber identity module dual active (DSDA) and is operating in hybrid automatic repeat request (HARQ) with incremental redundancy; determining whether a first retransmission signal for the first transmission signal fails decoding at the network entity; and retransmitting the first transmission signal as a new transmission signal when a determination is made that the first retransmission signal for the first transmission signal fails decoding at the network entity.Type: ApplicationFiled: January 19, 2016Publication date: October 27, 2016Inventors: Zae Yong Choi, Omesh Kumar Handa, Yuan Wang, Rami Alnatsheh, Syam Pavan Vadapalli, Murali Menon
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Patent number: 9456426Abstract: A gain factor is used for calculating one transmit power relative to another transmit power. For example, in UMTS high speed uplink packet access, a gain factor called ?ed is employed for transmission associated a given enhanced transport format combination indicator (E-TFCI). Conventionally, a gain factor to be used for a given E-TFCI can be determined via interpolation between two of the reference E-TFCIs to reduce signaling overhead. However, certain network configurations may result in one or more of the reference E-TFCIs that could be otherwise be used according to conventional techniques being outside of a valid range. In the event such a sub-optimal configuration occurs, interpolation and/or extrapolation schemes based on at least one reference E-TFCIs that is within and/or or is not within the valid range are used to calculate a gain factor for a given E-TFCI.Type: GrantFiled: May 23, 2014Date of Patent: September 27, 2016Assignee: QUALCOMM IncorporatedInventors: Ambarish Tripathi, Vaishakh Rao, Yi Zhang, Liangchi Hsu, Zae Yong Choi
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Publication number: 20160173226Abstract: In an aspect, this disclosure provides for determining a power imbalance between a first radio frequency (RF) carrier and a second RF carrier of a dedicated physical control channel for uplink transmission, determining whether the power imbalance is greater than a power imbalance threshold, and blocking data transmission on one of the first RF carrier or the second RF carrier when the power imbalance is greater than the power imbalance threshold.Type: ApplicationFiled: July 9, 2015Publication date: June 16, 2016Inventors: Zae Yong CHOI, Omesh Kumar HANDA, Rami Hmeidan ALNATSHEH, Chaitanya SHAH, Yuan WANG, Luna Sapna D'SOUZA
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Publication number: 20150189600Abstract: Aspects of the present disclosure provide an apparatus and method of utilizing a filtered transmit power margin calculation, rather than an instantaneous Tx power, to determine whether or not to trigger an Event 6D report. The filtered transmit power margin may take into account not only the user equipment's transmit power and the maximum transmit power level, but in addition, a received maximum power reduction value.Type: ApplicationFiled: June 20, 2014Publication date: July 2, 2015Inventors: Zae Yong Choi, Yi Zhang
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Publication number: 20150163755Abstract: A gain factor is used for calculating one transmit power relative to another transmit power. For example, in UMTS high speed uplink packet access, a gain factor called ?ed is employed for transmission associated a given enhanced transport format combination indicator (E-TFCI). Conventionally, a gain factor to be used for a given E-TFCI can be determined via interpolation between two of the reference E-TFCIs to reduce signaling overhead. However, certain network configurations may result in one or more of the reference E-TFCIs that could be otherwise be used according to conventional techniques being outside of a valid range. In the event such a sub-optimal configuration occurs, interpolation and/or extrapolation schemes based on at least one reference E-TFCIs that is within and/or or is not within the valid range are used to calculate a gain factor for a given E-TFCI.Type: ApplicationFiled: May 23, 2014Publication date: June 11, 2015Applicant: QUALCOMM IncorporatedInventors: Ambarish Tripathi, Vaishakh Rao, Yi Zhang, Liangchi Hsu, Zae Yong Choi
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Publication number: 20140362779Abstract: Apparatuses and methods include determining a first initial random access channel (RACH) preamble power based on one or more of a history of RACH preamble powers, a history of common pilot channel (CPICH) chip energy to total power density ratio (EcIo) measurements, and a history of CPICH received signal code power (RSCP) measurements, wherein each of the history of RACH preamble powers, the history of CPICH EcIo measurements, and the history of CPICH RSCP measurements corresponds to previous RACH procedures when the RACH procedure succeeded, and initiating subsequent RACH procedures with preambles that are based on the first initial RACH preamble power. Some present aspects may reduce the push to talk (PTT) call setup latency.Type: ApplicationFiled: November 21, 2013Publication date: December 11, 2014Applicant: QUALCOMM IncorporatedInventors: Harish VENKATACHARI, Nate CHIZGI, Zae Yong CHOI
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Patent number: 8644183Abstract: Systems and methods for memory-efficient storage and extraction of maximum power reduction (MPR) values in two-carrier wireless data systems are presented. A wireless broadband device can operate under the HSUPA Category 9 standard, in which two carriers can be employed for data uplinks. Due to power saturation, interference, and other factors, transmission output power is limited to various levels depending on channel configuration. Under previous standards using one carrier, the maximum power reduction (MPR) needed to address those issues could be stored on the device, since the total number of MPR values was limited. With the introduction of dual carriers in HSUPA-9, storing all possible MPR values is no longer feasible. Platforms and techniques are disclosed which allow accurate generation of MPR values in a two-carrier system, utilizing the 2nd, 4th, and 6th moments of the complex signals to derive MPR values without attempting to store all possible carrier combinations.Type: GrantFiled: June 26, 2012Date of Patent: February 4, 2014Assignee: QUALCOMM IncorporatedInventors: Jinhua Jiang, Zae Yong Choi, Mei Chen
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Publication number: 20130343249Abstract: Systems and methods for memory-efficient storage and extraction of maximum power reduction (MPR) values in two-carrier wireless data systems are presented. A wireless broadband device can operate under the HSUPA Category 9 standard, in which two carriers can be employed for data uplinks. Due to power saturation, interference, and other factors, transmission output power is limited to various levels depending on channel configuration. Under previous standards using one carrier, the maximum power reduction (MPR) needed to address those issues could be stored on the device, since the total number of MPR values was limited. With the introduction of dual carriers in HSUPA-9, storing all possible MPR values is no longer feasible. Platforms and techniques are disclosed which allow accurate generation of MPR values in a two-carrier system, utilizing the 2nd, 4th, and 6th moments of the complex signals to derive MPR values without attempting to store all possible carrier combinations.Type: ApplicationFiled: June 26, 2012Publication date: December 26, 2013Applicant: QUALCOMM IncorporatedInventors: Jinhua Jiang, Zae Yong Choi, Mei Chen
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Patent number: 8594155Abstract: Systems and methodologies are described that facilitate synthesizing a single baseband waveform from digital signals related to multiple carriers. Digital signals can be received relating to a plurality of carriers. The digital signals can result from spreading data symbols from transport blocks to create chip sequences, which can additionally be pulse shaped. The digital signals can be rotated in a positive or negative direction, such as according to a complex sinusoid or a negative representation thereof. The rotated signals can be combined or added to generate a single baseband waveform. The single baseband waveform can be converted to an analog signal, which can be up-converted and centered at a plurality of frequency carriers, which can be adjacent, assigned for transmitting the signal. In addition, optimizations can be provided to ensure threshold power ratio over the plurality of carriers for effectively transmitting jointly encoded signals.Type: GrantFiled: January 4, 2010Date of Patent: November 26, 2013Assignee: QUALCOMM IncorporatedInventors: Sharad D. Sambhwani, Zae Yong Choi, Heechoon Lee, Arjun Bharadwaj