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公开(公告)号：US11457416B2
公开(公告)日：2022-09-27
申请号：US17141150
申请日：2021-01-04
Applicant: QUALCOMM Incorporated
Inventor： Jagadish Nadakuduti , Lin Lu , Paul Guckian , Mingming Cai , Junsheng Han , Udara Fernando , Raghu Challa
IPC: H04B7/00 , H04W52/22 , H04B1/3827 , 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：US11368926B2
公开(公告)日：2022-06-21
申请号：US15837607
申请日：2017-12-11
Applicant: QUALCOMM Incorporated
Inventor： Ashwin Sampath , Andrzej Partyka , Joseph Burke , Ozge Koymen , Raghu Challa
Abstract: Various aspects of the disclosure relate to reporting a power limit along with an indication of at least one constraint upon which the power limit is based. In some aspects, the constraint is a radio frequency (RF) exposure constraint. For example, a power headroom limit calculated by a first apparatus may be constrained by a specific absorption rate (SAR) limit or a maximum permissible exposure (MPE) limit. The first apparatus may thus report to a second apparatus the current power headroom limit of the first apparatus along with an indication of whether the power headroom limit is constrained by an SAR limit or an MPE limit (e.g., as opposed to being constrained by a maximum transmit power limit). The second apparatus may then schedule the first apparatus taking into account the power headroom limit and the corresponding constraint (e.g., maximum power or SAR/MPE).
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3.发明授权公开(公告)号：US10863484B2
公开(公告)日：2020-12-08
申请号：US15722261
申请日：2017-10-02
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Junyi Li , Raghu Challa
IPC: H04W4/00 , H04W72/04 , H04W74/08 , H04W74/00 , H04L5/00 , H04W48/10 , H04W52/14 , H04W52/32 , H04W52/50
Abstract: In one aspect, a method, a computer-readable medium, and an apparatus for wireless communication are provided. The apparatus may be a base station. The apparatus may determine a duration of an uplink message that is to be sent from a UE. The apparatus may inform the UE regarding the duration of the uplink message through a random-access response message.
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公开(公告)号：US10432378B2
公开(公告)日：2019-10-01
申请号：US15717713
申请日：2017-09-27
Applicant: QUALCOMM Incorporated
Inventor： Peter Pui Lok Ang , Krishna Kiran Mukkavilli , Raghu Challa , Yang Yang , Alexei Yurievitch Gorokhov , Tingfang Ji , Joseph Binamira Soriaga , Heechoon Lee
Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes identifying a transmission timing of a control reference signal transmitted over a radio frequency spectrum band during an OFF duration of the UE with respect to the radio frequency spectrum band, in which the identified transmission timing is relative to a transition from the OFF duration to an ON duration of the UE with respect to the radio frequency spectrum band; receiving the control reference signal at the identified transmission timing; and performing a warm-up procedure, before the ON duration, based at least in part on the identified transmission timing of the control reference signal. A method for wireless communication at a wireless network includes indicating, to the UE, the transmission timing of the control reference signal; and transmitting the control reference signal at the indicated transmission timing. The OFF duration and the ON duration are coordinated with a wireless network.
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公开(公告)号：US10268256B2
公开(公告)日：2019-04-23
申请号：US15683553
申请日：2017-08-22
Applicant: QUALCOMM Incorporated
Inventor： Prashant Udupa Sripathi , Chinmay Vaze , Hongbo Yan , Raghu Challa
IPC: G06F1/3225 , H04B7/26 , G06F1/3234 , H04L12/18 , H04W52/02 , H04L1/00 , H04L1/06
Abstract: A method, a user equipment, an apparatus, and a computer program product for wireless communication are provided. The user equipment may identify a power consumption condition that relates to a downlink channel associated with the user equipment. The power consumption condition may correspond to a time period that is shorter than or equal to a transmission time interval of the user equipment. The user equipment may configure one or more modems of the user equipment to reduce power consumption during the time period.
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Patent Agency Ranking
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：US20220066011A1
公开(公告)日：2022-03-03
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
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：US11129103B2
公开(公告)日：2021-09-21
申请号：US16354087
申请日：2019-03-14
Applicant: QUALCOMM Incorporated
Inventor： Chhavi Jain , Baris Efe , Yong Li , Raghu Challa , Chun-Hao Hsu
Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes: identifying at least one indicator to conserve power; and in response to the identification, determining to skip one or more periodic or semi-persistent measurements of a signal from a cell based on at least one criteria.
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公开(公告)号：US10959233B2
公开(公告)日：2021-03-23
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
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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公开(公告)号：US20190124586A1
公开(公告)日：2019-04-25
申请号：US15792361
申请日：2017-10-24
Applicant: Qualcomm Incorporated
Inventor： Mustafa Emin Sahin , Raghu Challa , Pengkai Zhao , Parisa Cheraghi , Supratik Bhattacharjee , Yongle Wu
IPC: H04W48/16 , H04B17/382
Abstract: Methods, systems, and devices for wireless communications are described. An exemplary method includes receiving a signal corresponding to a frequency band, scanning for communications activity within the frequency band, wherein scanning for communications activity within the frequency band comprises performing a correlation calculation on samples of the signal, and determining whether to attempt a connection establishment within the frequency band based at least in part on the correlation calculation on samples of the signal. When the scanning identifies an indication of activity, a scanning device may attempt to establish a connection with a base station within the frequency band. When the scanning identifies an indication of no activity, a scanning device may refrain from attempting to establish a connection with a base station within the frequency band, and may perform the correlation-enhanced frequency scanning on a different frequency band.
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