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公开(公告)号：US10244426B2
公开(公告)日：2019-03-26
申请号：US14799515
申请日：2015-07-14
Applicant: QUALCOMM Incorporated
Inventor： Huilin Xu , Alexei Gorokhov , Mariam Motamed , Raghu Challa , Joshua MacDonald , Kai Xie , Vivek Padi , Alex Mateen , Juchuan Ma
Abstract: Aspects of frequency error detection with Physical Broadcast CHannel (PBCH) frequency hypothesis are described. For example, a method and apparatus are disclosed for frequency tracking in a user equipment (UE) may include detecting a change in frequency that exceeds a pull-in range of a frequency tracking loop (FTL) of the UE. The method and apparatus may also include identifying a tracking recovery frequency in response to the change in frequency being detected, wherein the tracking recover frequency is identified from a set of frequency hypotheses and based on decoding of the PBCH received by the UE. The method and apparatus may further include updating the FTL with the tracking recovery frequency.
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公开(公告)号：US12123936B2
公开(公告)日：2024-10-22
申请号：US17521804
申请日：2021-11-08
Applicant: Qualcomm Incorporated
Inventor： Mustafa Emin Sahin , Udara Fernando , Roberto Rimini , Raghu Challa , Seunghwan Kim
CPC classification number: G01S13/32 , H04B7/0617 , H04B1/38 , H04B7/0604
Abstract: An apparatus is disclosed for proximity detection using multiple power levels. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit multiple transmit signals at multiple power levels via the first antenna. The wireless transceiver is also configured to receive multiple receive signals via the second antenna. At least one receive signal of the multiple receive signals includes a portion of at least one transmit signal of the multiple transmit signals that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the at least one receive signal. The transmission parameter varies according to a range to the object.
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公开(公告)号：US11324014B2
公开(公告)日：2022-05-03
申请号：US15852743
申请日：2017-12-22
Applicant: QUALCOMM Incorporated
Inventor： Ashwin Sampath , Joseph Burke , Raghu Challa , Udara Fernando , Andrzej Partyka , Muhammad Nazmul Islam
IPC: H04W72/08 , H04B1/3827 , H04W52/24 , H04W72/04 , H04W52/36 , H04W52/14 , H04W52/22 , H04B17/318 , H04W24/10 , H04W24/02
Abstract: In order to maintain conformance with exposure limits, in band measurements may be performed. A method, a computer-readable medium, and an apparatus may be provided for wireless communication at a user equipment. The apparatus receives an indication of a cell specific resource, e.g., a cell specific resource available for MPE measurement. The apparatus then performs a measurement based on the cell specific resource and determines whether to adjust a transmission characteristic of the user equipment based on whether the measurement meets a threshold. In another aspect a base station apparatus may configure a cell specific resource in which a user equipment may perform an MPE measurement and control use of the cell specific resource for the MPE measurement.
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公开(公告)号：US20190302250A1
公开(公告)日：2019-10-03
申请号：US15939178
申请日：2018-03-28
Applicant: Qualcomm Incorporated
Inventor： Mustafa Emin Sahin , Udara Fernando , Roberto Rimini , Raghu Challa , Seunghwan Kim
IPC: G01S13/32
Abstract: An apparatus is disclosed for proximity detection using multiple power levels. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit multiple transmit signals at multiple power levels via the first antenna. The wireless transceiver is also configured to receive multiple receive signals via the second antenna. At least one receive signal of the multiple receive signals includes a portion of at least one transmit signal of the multiple transmit signals that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the at least one receive signal. The transmission parameter varies according to a range to the object.
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公开(公告)号：US20180139758A1
公开(公告)日：2018-05-17
申请号：US15808637
申请日：2017-11-09
Applicant: QUALCOMM Incorporated
Inventor： Hari Sankar , Alexei Yurievitch Gorokhov , Paolo Minero , Hobin Kim , Raghu Challa , Jing Jiang , Joseph Binamira Soriaga
CPC classification number: H04W72/0466 , H04L1/0023 , H04L1/005 , H04L1/0075 , H04W24/02 , H04W24/08 , H04W72/085
Abstract: Systems, methods and apparatus select a code book based on channel conditions and performance of a demodulator or demapper in a wireless receiver. The method may include determining that the receiver in a first wireless communication apparatus is configured for iteratively processing signals received from a channel, selecting a code book for use in communicating over the channel based on conditions affecting transmission of the signals through the channel and performance information associated with a demapper in the receiver, and identifying the selected code book in one or more control channels transmitted to a second wireless communication apparatus.
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Patent Agency Ranking
公开(公告)号：US12213080B2
公开(公告)日：2025-01-28
申请号：US18487557
申请日：2023-10-16
Applicant: QUALCOMM Incorporated
Inventor： Jagadish Nadakuduti , Lin Lu , Paul Guckian , Mingming Cai , Junsheng Han , Udara Fernando , Raghu Challa
IPC: H04W52/12 , H04B1/3827 , H04W52/22
Abstract: In certain aspects, a method implemented in a wireless device includes determining a specific absorption rate (SAR) distribution for a first wireless communication technology, determining a power density (PD) distribution for a second wireless communication technology, and combining the SAR distribution and the PD distribution to generate a combined RF exposure distribution. The method also includes determining at least one first maximum allowable power level and at least one second maximum allowable power level for a future time slot based on the combined RF exposure distribution, setting at least one transmission power limit for a first transmitter in the future time slot based on the at least one first maximum allowable power level, and setting at least one transmission power limit for a second transmitter in the future time slot based on the at least one second maximum allowable power level.
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公开(公告)号：US11792740B2
公开(公告)日：2023-10-17
申请号：US17949976
申请日：2022-09-21
Applicant: QUALCOMM Incorporated
Inventor： Jagadish Nadakuduti , Lin Lu , Paul Guckian , Mingming Cai , Junsheng Han , Udara Fernando , Raghu Challa
IPC: H04M1/00 , H04W52/22 , H04B1/3827 , H04W52/12
CPC classification number: H04W52/225 , H04B1/3838 , H04W52/12
Abstract: In certain aspects, a method implemented in a wireless device includes determining a specific absorption rate (SAR) distribution for a first wireless communication technology, determining a power density (PD) distribution for a second wireless communication technology, and combining the SAR distribution and the PD distribution to generate a combined RF exposure distribution. The method also includes determining at least one first maximum allowable power level and at least one second maximum allowable power level for a future time slot based on the combined RF exposure distribution, setting at least one transmission power limit for a first transmitter in the future time slot based on the at least one first maximum allowable power level, and setting at least one transmission power limit for a second transmitter in the future time slot based on the at least one second maximum allowable power level.
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公开(公告)号：US11169251B2
公开(公告)日：2021-11-09
申请号：US15939178
申请日：2018-03-28
Applicant: Qualcomm Incorporated
Inventor： Mustafa Emin Sahin , Udara Fernando , Roberto Rimini , Raghu Challa , Seunghwan Kim
Abstract: An apparatus is disclosed for proximity detection using multiple power levels. In an example aspect, the apparatus includes a first antenna, a second antenna, and a wireless transceiver coupled to the first antenna and the second antenna. The wireless transceiver is configured to transmit multiple transmit signals at multiple power levels via the first antenna. The wireless transceiver is also configured to receive multiple receive signals via the second antenna. At least one receive signal of the multiple receive signals includes a portion of at least one transmit signal of the multiple transmit signals that is reflected by an object. The wireless transceiver is additionally configured to adjust a transmission parameter based on the at least one receive signal. The transmission parameter varies according to a range to the object.
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公开(公告)号：US11088750B2
公开(公告)日：2021-08-10
申请号：US16274359
申请日：2019-02-13
Applicant: QUALCOMM Incorporated
Inventor： Yan Zhou , Tao Luo , Valentin Alexandru Gheorghiu , Raghu Challa , Ruhua He , Yong Li , Timo Ville Vintola
Abstract: Certain aspects of the present disclosure relate to methods and apparatus for providing beam switch latency using communications systems operating according to new radio (NR) technologies. For example, the method generally includes determining a latency associated with a beam switch from a source antenna array module to a target antenna array module when the target module is in a low power mode; and signaling a base station to use the determined latency after sending a command for the beam switch.
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公开(公告)号：US10652833B2
公开(公告)日：2020-05-12
申请号：US16460894
申请日：2019-07-02
Applicant: QUALCOMM Incorporated
Inventor： Jagadish Nadakuduti , Lin Lu , Paul Guckian , Mingming Cai , Junsheng Han , Udara Fernando , Raghu Challa
IPC: H04B7/00 , H04W52/22 , H04W52/12 , H04B1/3827
Abstract: In certain aspects, a method implemented in a wireless device includes determining a specific absorption rate (SAR) distribution for a first wireless communication technology, determining a power density (PD) distribution for a second wireless communication technology, and combining the SAR distribution and the PD distribution to generate a combined RF exposure distribution. The method also includes determining at least one first maximum allowable power level and at least one second maximum allowable power level for a future time slot based on the combined RF exposure distribution, setting at least one transmission power limit for a first transmitter in the future time slot based on the at least one first maximum allowable power level, and setting at least one transmission power limit for a second transmitter in the future time slot based on the at least one second maximum allowable power level.
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