公开(公告)号：US11635505B2

公开(公告)日：2023-04-25

申请号：US17171557

申请日：2021-02-09

Applicant: QUALCOMM Incorporated

Inventor： Weimin Duan ,  Alexandros Manolakos ,  Seyong Park ,  Tingfang Ji

IPC: G01S13/00 ,  G01S13/20 ,  G01S13/44 ,  G01S13/50

Abstract: Techniques are disclosed for determining the location of an object using RF sensing. More specifically, an object may be detected in a wireless data communication network using radar techniques in which one or more base stations act as a transmitter and a mobile device (e.g., a user equipment (UE)) acts as a receiver in a bistatic or multi-static radar configuration. By comparing the time a line-of-sight (LOS) signal is received by the mobile device with that of an echo signal from a reflection of an RF signal from the object, a position of the object can be determined. Depending on desired functionality, this position can be determined by the UE, or by a network entity.

公开(公告)号：US20220353913A1

公开(公告)日：2022-11-03

申请号：US17868588

申请日：2022-07-19

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Linhai He ,  Hung Dinh Ly ,  Seyong Park ,  Naga Bhushan ,  Ying Wang ,  Wanshi Chen ,  Joseph Binamira Soriaga

IPC: H04W74/08 ,  H04W76/27 ,  H04L1/18 ,  H04L5/00 ,  H04L5/10 ,  H04W24/08 ,  H04W72/14 ,  H04W80/02

Abstract: Fallback procedures for user equipments (UEs) are described that provide efficient fallback to a four-step random access procedure from a two-step random access procedure. For example, after transmitting a first message of a two-step random access procedure, a UE may start a fallback timer or counter and monitor for a second message of the two-step random access procedure for the duration of the fallback timer or counter. At the expiration of the fallback timer or counter, the UE may fall back to a four-step random access procedure. In some cases, the UE may transmit multiple repetitions of the first message and monitor for responses after transmitting the repetitions or after each repetition. Additionally, or alternatively, the base station may transmit an explicit signal to the UE that may signal to the UE to perform a fallback procedure at a beginning or middle of a random access procedure.

公开(公告)号：US11470649B2

公开(公告)日：2022-10-11

申请号：US16742597

申请日：2020-01-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Joseph Binamira Soriaga ,  Wanshi Chen ,  Seyong Park

IPC: H04W74/08 ,  H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described in which a UE may determine a time duration of a transmission gap between a random access preamble and random access payload. The time duration of the transmission gap may be based on a configuration of the random access channel resources, a timing adjustment (e.g., an estimated propagation delay) for uplink transmissions from the UE, a beam management procedure at the UE and/or the base station, or combinations thereof. The UE may select an initial transmission gap duration based on the configuration of the random access channel resources, and may adjust the initial transmission gap duration based on the timing adjustment. Multiple UEs may be configured such that random access channel transmissions align with a random access occasion (RO) window. A base station may decode messages from multiple UEs using joint or successive decoding to recover the corresponding random access messages.

公开(公告)号：US11284434B2

公开(公告)日：2022-03-22

申请号：US16852222

申请日：2020-04-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Seyong Park

IPC: H04W74/08 ,  H04W74/00 ,  H04W74/02

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, inter-cell interference may occur for one or more random access channel (RACH) transmissions. To mitigate the inter-cell interference, one or more based stations may use inter-cell coordination to exchange configuration information associated with RACH procedures. Accordingly, each base station may select cell-specific RACH configurations to mitigate the inter-cell interference based on the exchanged configuration information and transmit the cell-specific RACH configurations to user equipments (UEs) served by each base station. In some cases, each base station and the corresponding UEs may use the cell-specific RACH configurations for a two-step RACH procedure that includes a first RACH message transmitted from a UE to the base station and a second RACH message transmitted from the base station to the UE. As described herein, the cell-specific RACH configurations may differ by at least one parameter to avoid the inter-cell interference.

公开(公告)号：US11259252B2

公开(公告)日：2022-02-22

申请号：US16515941

申请日：2019-07-18

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Tingfang Ji ,  Peter Gaal ,  Xiao Feng Wang ,  Joseph Binamira Soriaga ,  Seyong Park ,  Gabi Sarkis ,  Wanshi Chen ,  Naga Bhushan ,  Ying Wang ,  Jay Kumar Sundararajan

IPC: H04W52/24 ,  H04W52/36 ,  H04W52/10 ,  H04W72/04 ,  H04W74/08 ,  H04W72/14 ,  H04W24/08 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine at least one of a downlink path loss value or an uplink path loss value associated with a base station; receive system information, a semi-persistently configured grant via RRC or a dynamic uplink grant via DCI from the base station, wherein the RRC signaling or the dynamic uplink grant identifies a power control value associated with one user or a plurality of users associated with the base station; and determine a transmit power for a data or control transmission based at least in part on at least one of the downlink path loss value or the uplink path loss value and the power control value. Numerous other aspects are provided.

公开(公告)号：US11251923B2

公开(公告)日：2022-02-15

申请号：US16022431

申请日：2018-06-28

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang ,  Seyong Park ,  Peter Gaal ,  Wanshi Chen

IPC: H04L5/00 ,  H04L1/16 ,  H04W72/04 ,  H04L1/18 ,  H04W72/12

Abstract: Systems, methods, computer-readable medium, and apparatus are disclosed that allow for control information to be provided in an efficient manner during short burst transmission. For example, an apparatus may be configured to receive downlink control information (DCI) that indicates an allocated resource from a base station. The apparatus may also receive data from the base station. The apparatus may generate a cyclically shifted sequence that corresponds to a sequence that is cyclically shifted based on at least one of an ACK or NACK for the received data and a SR. The apparatus may then transmit the cyclically shifted sequence in the allocated resource within one symbol period of a slot of a subframe to the base station. Thus, by transmitting the SR and the ACK/NACK in one symbol, control information for short burst transmissions can be provided in a more temporally efficient manner without adding excessive complexity to the UE.

公开(公告)号：US11057051B2

公开(公告)日：2021-07-06

申请号：US16538451

申请日：2019-08-12

Applicant: QUALCOMM Incorporated

Inventor： Ying Wang ,  Jing Jiang ,  Wei Yang ,  Gabi Sarkis ,  Jing Lei ,  Seyong Park

IPC: H03M13/13 ,  H03M13/00 ,  H04L1/00 ,  H03M13/25

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may construct, for adjusted fractally enhanced kernel (FRANK) polar coding, encoding code for encoding data of an ultra-reliable low latency (URLLC) communication, wherein an information bit assignment to an information bit set associated with the encoding code is performed based at least in part on an adjusted dimensionality factor, wherein the encoding code is all-stage FRANK polar code or partial-stage FRANK polar code, and wherein the encoding code is constructed for code block shortening or code block puncturing. In some aspects, the user equipment may transmit the URLLC communication encoded using the encoding code based at least in part on the information bit assignment to the information bit set. Numerous other aspects are provided.

公开(公告)号：US11026255B2

公开(公告)日：2021-06-01

申请号：US16020915

申请日：2018-06-27

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Peter Gaal ,  Xiao Feng Wang ,  Juan Montojo ,  Yi Huang ,  Renqiu Wang ,  Seyong Park

IPC: H04W72/14 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described that support discontinuous scheduling. A base station may transmit, to a user equipment (UE), a grant of resources of a communication channel over a multiple of aggregated TTIs. The UE may monitor a control channel for the grant of resources transmitted by base station. The base station and the UE may identify a location of an excluded TTI within the plurality of aggregated TTIs. The excluded TTI may correspond to a TTI for communicating synchronization signals, random access channel (RACH) signals, or the like. The base station may communicate with the UE via the resources of the communication channel over at least a subset of the aggregated TTIs based on the grant and the location of the excluded TTI.

公开(公告)号：US11018828B2

公开(公告)日：2021-05-25

申请号：US15713270

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wanshi Chen ,  Wei Zeng ,  Alexandros Manolakos ,  Hao Xu ,  Renqiu Wang ,  Yi Huang ,  Peter Gaal ,  Naga Bhushan

IPC: H04L5/00 ,  H04W52/18 ,  H04L27/26 ,  H04W72/04 ,  H04W52/36

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for Uplink MIMO reference signals and data transmission schemes communications systems operating according to 5G technologies. For example, one or more techniques for enabling PRG selection and conveying that selection are provided. In some cases, precoder selection techniques may be provided. Further, in some cases, techniques may be provided to distinguish OFDM and DFT-s-OFDM by using different ports.

公开(公告)号：US20210144039A1

公开(公告)日：2021-05-13

申请号：US17152761

申请日：2021-01-19

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Yi Huang ,  Renqiu Wang ,  Sony Akkarakaran ,  Peter Gaal ,  Tao Luo

IPC: H04L27/26 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. Pre-discrete Fourier transform (DFT) time-domain spreading codes may be applied for UE multiplexing for uplink control information (e.g., over shared resources of an uplink slot). For example, a moderate number of UEs may be multiplexed within the same slot by having each UE spread modulation symbols before DFT-spreading by different spreading code. For orthogonality across UEs, the pre-DFT spreading codes may be selected as orthogonal cover codes (OCCs). The spreading sequences can be generated from a set of any orthogonal sequences or generated from unitary matrices. In some cases, orthogonality in the time domain may be kept as well as a frequency division multiplexed (FDM) structure in the frequency domain. For such property, a Fourier basis OCC design may be used. In some other examples, a Hadamard matrix based OCC design may be used.