公开(公告)号：US11924819B2

公开(公告)日：2024-03-05

申请号：US15930196

申请日：2020-05-12

Applicant: QUALCOMM Incorporated

Inventor： Mingming Cai ,  Junsheng Han ,  Raghu Narayan Challa ,  Tienyow Liu ,  Jing Lin ,  Jagadish Nadakuduti ,  Lin Lu ,  Farhad Meshkati

IPC: H04W72/044 ,  H04W52/36 ,  H04W72/21 ,  H04W72/56

CPC classification number: H04W72/0473 ,  H04W52/367 ,  H04W72/21 ,  H04W72/56

Abstract: Methods and systems for determining transmission power levels according to signal types and RF exposure limits. An example method generally includes determining a first transmission power for transmitting a first type of uplink (UL) signal, determining a second transmission power for transmitting a second type of UL signal based on the first transmission power, and transmitting at least one of the first UL signal according to the first transmission power or the second UL signal according to the second transmission power.

公开(公告)号：US12096376B2

公开(公告)日：2024-09-17

申请号：US17695705

申请日：2022-03-15

Applicant: QUALCOMM Incorporated

Inventor： Farhad Meshkati ,  Raghu Narayan Challa ,  Tienyow Liu

IPC: H04W52/14 ,  H04W52/30

CPC classification number: H04W52/146 ,  H04W52/30

Abstract: Methods, systems, and devices for wireless communications are described that support techniques for transmission power determination for radio frequency (RF) exposure compliance. A transmitting device, such as a user equipment (UE) may determine an uplink transmit power limit for a time window based on an RF limit and a duration of the time window. The device may use the power limit to determine an uplink transmit power based on a computed uplink transmission period for the time window that accounts for a time period during which the device is expected to actually transmit. The computed uplink transmission period may be based on one or more actual uplink transmission periods during one or more prior time windows, a predictive model, network signaling, or any combinations thereof. The device may transmit one or more uplink transmissions during the time window using the determined uplink transmit power.

公开(公告)号：US11729728B2

公开(公告)日：2023-08-15

申请号：US17455975

申请日：2021-11-22

Applicant: QUALCOMM Incorporated

Inventor： Mingming Cai ,  Tienyow Liu ,  Raghu Narayan Challa ,  Jing Lin ,  Junsheng Han

IPC: H04W52/42 ,  H04B7/06 ,  H04W52/14 ,  H04W52/22 ,  H04W52/36 ,  H04W88/02

CPC classification number: H04W52/42 ,  H04B7/0695 ,  H04W52/146 ,  H04W52/228 ,  H04W52/367 ,  H04W88/02

Abstract: Certain aspects of the present disclosure relate to beam selection. An example method generally includes selecting, from a plurality of beams, a beam for transmission during a particular time interval within a time window, the selecting being based on a transmission power and a radio frequency (RF) exposure for each of the plurality of beams and transmitting at least one signal using the selected beam during the particular time interval.

公开(公告)号：US20230016288A1

公开(公告)日：2023-01-19

申请号：US17720145

申请日：2022-04-13

Applicant: QUALCOMM Incorporated

Inventor： Michel Chauvin ,  Reza Shahidi ,  Arnaud Meylan ,  Tienyow Liu

IPC: H04W52/14 ,  H04B1/3827 ,  H04W28/02 ,  H04W52/36

Abstract: Methods, systems, and devices for wireless communications are described for radio frequency (RF) exposure limit compliance using uplink duty cycling. A user equipment (UE) may transmit a buffer status report (BSR) that indicates an amount of data that is to be transmitted by the UE, where lower priority data reported in the BSR may be throttled in order to reduce an amount of uplink resources associated with the lower priority data and thereby adjust an uplink duty cycle of the UE. The reduced uplink duty cycle may provide for additional transmit power that is available for higher priority data transmissions.

公开(公告)号：US11330534B2

公开(公告)日：2022-05-10

申请号：US16949574

申请日：2020-11-04

Applicant: QUALCOMM Incorporated

Inventor： Valentin Alexandru Gheorghiu ,  Raghu Narayan Challa ,  Timo Ville Vintola ,  Tienyow Liu ,  Farhad Meshkati

IPC: H04W52/34 ,  H04W52/36

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, and a base station may receive, a report that includes information related to a power headroom available to the UE at a current power level and information related to a duty cycle that the UE can sustain over a moving integration window based at least in part on a maximum permissible exposure limit. In some aspects, the base station may transmit, and the UE may receive, scheduling information based at least in part on the information related to the power headroom available to the UE at the current power level and the information related to the duty cycle that the UE can sustain over the moving integration window. Numerous other aspects are provided.

公开(公告)号：US10116485B1

公开(公告)日：2018-10-30

申请号：US15799360

申请日：2017-10-31

Applicant: QUALCOMM Incorporated

Inventor： Tienyow Liu ,  James Gardner ,  Jayanand Asok Kumar

IPC: H04L27/36 ,  H04B1/40 ,  H04L27/38 ,  H04L27/00

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for contemporaneously estimating transmitter in-phase and quadrature (I/Q) imbalances, receiver I/Q imbalances, and transmit carrier leakage in a wireless transceiver. In some implementations, first, second, and third frequency-domain multi-tone (FDMT) signals transmitted through a calibration path of the wireless transceiver are captured to generate frequency domain representations of the first, second, and third FDMT signals. The frequency domain representations of the first, second, and third FDMT signals may be used to contemporaneously estimate the transmitter I/Q imbalances, receiver I/Q imbalances, and the transmit carrier leakage, which in turn may be used to determine transmitter and receiver I/Q imbalance correction filter coefficients and a transmit carrier leakage correction factor.

公开(公告)号：US12302258B2

公开(公告)日：2025-05-13

申请号：US17652027

申请日：2022-02-22

Applicant: QUALCOMM Incorporated

Inventor： Shanshan Wang ,  Reza Shahidi ,  Francis Ming-Meng Ngai ,  Akhil Deodhar ,  Troy Curtiss ,  Bhupesh Manoharlal Umatt ,  Lan Lan ,  Qingxin Chen ,  Leena Zacharias ,  Cheol Hee Park ,  Farhad Meshkati ,  Dinesh Kumar Devineni ,  Tienyow Liu ,  Tianpei Chen ,  Jagadish Nadakuduti ,  Lin Lu

IPC: H04W52/28 ,  H04W52/14 ,  H04W52/36

Abstract: Various aspects of the present disclosure generally relate to wireless communication. A user equipment (UE) may configure a first initial set of maximum transmit powers for a first subscriber module. The UE may configure a second initial set of maximum transmit powers for a second subscriber module. The UE may configure a first maximum transmit power associated with a first connection for the first subscriber module. The UE may configure, independently of the configuration of the first maximum transmit power, a second maximum transmit power associated with the second connection. The UE may transmit based at least in part on at least one of the first maximum transmit power or the second maximum transmit power. Numerous other aspects are described.

公开(公告)号：US20240056978A1

公开(公告)日：2024-02-15

申请号：US17887033

申请日：2022-08-12

Applicant: QUALCOMM Incorporated

Inventor： Gokul Sridharan ,  Kazuki Takeda ,  Tienyow Liu ,  Peter Gaal

IPC: H04W52/02

CPC classification number: H04W52/0274

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit uplink transmission using antenna elements mapped to one or more antenna ports. The UE may transmit a first message to a network entity to indicate antenna ports that are available for wireless communications at the UE. The UE may transmit a second message to the network entity to indicate antenna groups associated with the antenna ports. Each antenna group may include a respective set of one or more antenna elements and may be associated with a respective transmit power threshold. The network entity may select a first antenna group of the one or more antenna groups for the UE to use for uplink transmissions. The UE may transmit, after transmitting the first and second messages, one or more uplink transmissions to the network entity using the first antenna group.

公开(公告)号：US20220303912A1

公开(公告)日：2022-09-22

申请号：US17695705

申请日：2022-03-15

Applicant: QUALCOMM Incorporated

Inventor： Farhad Meshkati ,  Raghu Narayan Challa ,  Tienyow Liu

IPC: H04W52/14 ,  H04W52/30

Abstract: Methods, systems, and devices for wireless communications are described that support techniques for transmission power determination for radio frequency (RF) exposure compliance. A transmitting device, such as a user equipment (UE) may determine an uplink transmit power limit for a time window based on an RF limit and a duration of the time window. The device may use the power limit to determine an uplink transmit power based on a computed uplink transmission period for the time window that accounts for a time period during which the device is expected to actually transmit. The computed uplink transmission period may be based on one or more actual uplink transmission periods during one or more prior time windows, a predictive model, network signaling, or any combinations thereof. The device may transmit one or more uplink transmissions during the time window using the determined uplink transmit power.

公开(公告)号：US11310751B2

公开(公告)日：2022-04-19

申请号：US16883950

申请日：2020-05-26

Applicant: QUALCOMM Incorporated

Inventor： Tienyow Liu ,  Mingming Cai ,  Raghu Narayan Challa ,  Junsheng Han ,  Farhad Meshkati

IPC: H04W52/36 ,  H04B17/336 ,  H04L1/00 ,  H04W52/24 ,  H04W72/04

Abstract: Wireless communication devices are adapted to utilize maximum permissible exposure requirements in determining uplink traffic grant allocations within wireless communication systems. According to one example, a wireless communication device can determine one or more candidate uplink duty cycles for a subsequent uplink transmission interval based at least in part on an MPE requirement, determine a maximum number of resource blocks per symbol and a maximum MSC index associated with each of the one or more candidate uplink duty cycles from a predefined MCS index table, and select a duty cycle, number of resource blocks per symbol, and MCS that facilitates a largest number of un-coded bits for the subsequent uplink transmission interval. Other aspects, embodiments, and features are also included.