公开(公告)号：US11140641B2

公开(公告)日：2021-10-05

申请号：US16596619

申请日：2019-10-08

Applicant: QUALCOMM Incorporated

Inventor： Cheol Hee Park ,  Feng Lu ,  Arvind Vardarajan Santhanam ,  Subramanya Rao ,  Sivaramakrishna Veerepalli ,  Cheng Tan ,  Sean Vincent Maschue ,  Ashish Shankar Iyer ,  Giridhar Ramakrishnan ,  Yax Patel ,  Srinivasan Rajagopalan

IPC: H04W56/00 ,  H04W4/40 ,  H04W84/00 ,  H04W80/02

Abstract: Aspects directed towards synchronizing out of coverage (OOC) vehicle-to-everything (V2X) communications are disclosed. In one example, a scheduled entity detects a loss of a synchronization signal associated with a V2X communication by detecting when a timing uncertainty value or error value is greater than a threshold value. Packet timing information is then received in response to the loss of the synchronization signal from at least one user equipment (UE) synchronized with the synchronization signal. The scheduled entity then maintains the V2X communication by performing a timing adjustment based on the packet timing information.

公开(公告)号：US11838072B2

公开(公告)日：2023-12-05

申请号：US17486745

申请日：2021-09-27

Applicant: QUALCOMM Incorporated

Inventor： Cheng Tan ,  Lei Sun ,  Sean Vincent Maschue ,  Bruce Charles Fischer, Jr. ,  Brian French

IPC: H04B3/48 ,  H03F3/24

CPC classification number: H04B3/48 ,  H03F3/245 ,  H03F2200/451

Abstract: Certain aspects of the present disclosure provide techniques for determining a cable loss associated with a transmission cable of an apparatus. An example method includes sending, to a radio modem of the apparatus, a request for the radio modem to use a target power when sending one or more signals to the signal compensator device for determining a cable loss associated with a transmission cable communicatively coupling the radio modem with the signal compensator device, receiving, at a signal compensator device of the apparatus, the one or more signals from the radio modem sent using the target power, and determining the cable loss associated with the transmission cable based on the one or more signals.

公开(公告)号：US11901931B2

公开(公告)日：2024-02-13

申请号：US17471095

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Lei Sun ,  Sean Vincent Maschue ,  Cheng Tan ,  Bruce Charles Fischer, Jr. ,  Brian French

IPC: H04B1/525 ,  H04B17/10 ,  H04B1/12

CPC classification number: H04B1/525 ,  H04B1/12 ,  H04B17/102

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.

公开(公告)号：US20230076071A1

公开(公告)日：2023-03-09

申请号：US17471095

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Lei Sun ,  Sean Vincent Maschue ,  Cheng Tan ,  Bruce Charles Fischer, JR. ,  Brian French

IPC: H04B1/525 ,  H04B1/12 ,  H04B17/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.

公开(公告)号：US11374633B2

公开(公告)日：2022-06-28

申请号：US16953173

申请日：2020-11-19

Applicant: QUALCOMM Incorporated

Inventor： Haim Weissman ,  Cheng Tan ,  In Hyuck Yeo ,  Cheol Hee Park ,  Jungsik Park

IPC: H04L27/00 ,  H04B7/02 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to operate in an antenna switch diversity mode to transmit an uplink signal according to an antenna switching pattern, the antenna switching pattern comprising switching between a first transmit chain coupled to a first antenna and a second transmit chain coupled to a second antenna. The UE may transmit at least a first portion of the uplink signal using the first transmit chain coupled to the first antenna, the first transmit chain coupled to the first antenna. The UE may transmit at least a second portion of the uplink signal using the second transmit chain coupled to the second antenna, the second transmit chain coupled to the second antenna.

公开(公告)号：US20210159956A1

公开(公告)日：2021-05-27

申请号：US16953173

申请日：2020-11-19

Applicant: QUALCOMM Incorporated

Inventor： Haim Weissman ,  Cheng Tan ,  In Hyuck Yeo ,  Cheol Hee Park ,  Jungsik Park

IPC: H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to operate in an antenna switch diversity mode to transmit an uplink signal according to an antenna switching pattern, the antenna switching pattern comprising switching between a first transmit chain coupled to a first antenna and a second transmit chain coupled to a second antenna. The UE may transmit at least a first portion of the uplink signal using the first transmit chain coupled to the first antenna, the first transmit chain coupled to the first antenna. The UE may transmit at least a second portion of the uplink signal using the second transmit chain coupled to the second antenna, the second transmit chain coupled to the second antenna.