公开(公告)号：US11729582B2

公开(公告)日：2023-08-15

申请号：US17213994

申请日：2021-03-26

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Mohammed Hirzallah ,  Roohollah Amiri ,  Marwen Zorgui ,  Rajat Prakash ,  Xiaoxia Zhang ,  Taesang Yoo

IPC: H04W4/029 ,  G01S5/02 ,  H04W24/08

CPC classification number: H04W4/029 ,  G01S5/02523 ,  H04W24/08

Abstract: In an aspect, a network component (e.g., BS, server, etc.) obtains measurement information associated with uplink signal(s) from UE(s), with the uplink signal(s) having reciprocity with one or more downlink beams of wireless node(s) (e.g., TRP, reference UE, etc.). The network component determines (e.g., generates or refines) a measurement (e.g., RFFP-P) model based on the measurement information. The network component provides the measurement (e.g., RFFP-P) model to a target UE. The target UE receives at least one signal (e.g., PRS) on the one or more downlink beams from the wireless node(s). The target UE processes the at least one signal (e.g., predicts target UE location) based at least in part on the measurement (e.g., RFFP-P) model.

公开(公告)号：US11722910B2

公开(公告)日：2023-08-08

申请号：US17302263

申请日：2021-04-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Jing Sun ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/26 ,  H04W74/08

CPC classification number: H04W16/26 ,  H04W74/0833

Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.

公开(公告)号：US11716758B2

公开(公告)日：2023-08-01

申请号：US17160058

申请日：2021-01-27

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Vinay Chande ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Jing Sun ,  Tao Luo

IPC: H04W74/08 ,  H04W16/28 ,  H04W24/08 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W16/28 ,  H04W24/08

Abstract: Systems and methods implementing receiver assisted channel access procedures configured to enable access for a potential transmitter while avoiding introducing unacceptable interference with respect to ongoing communications in a shared channel are described. In examples, a receiver assisted channel access procedure implements a LBT enhanced CCA (eCCA) technique in which receiver assisted transmitter sensing is utilized. A receiver assisted channel access procedure may implement monitoring of a shared channel during a contiguous contention period for one or more instances of a periodic session protection signal.

公开(公告)号：US11711109B2

公开(公告)日：2023-07-25

申请号：US17324651

申请日：2021-05-19

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W74/02 ,  H04B1/713 ,  H04W72/044 ,  H04B7/26 ,  H04L12/413 ,  H04L5/00 ,  H04L12/46 ,  H04J11/00

CPC classification number: H04B1/713 ,  H04B7/2643 ,  H04L5/0012 ,  H04L5/0037 ,  H04L12/413 ,  H04L12/4625 ,  H04W72/044 ,  H04J11/0026 ,  H04L5/001

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

公开(公告)号：US11696284B2

公开(公告)日：2023-07-04

申请号：US16563730

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Srinivas Yerramalli ,  Qingjiang Tian ,  Andrei Dragos Radulescu ,  Tamer Kadous

IPC: H04W72/00 ,  H04W72/20 ,  H04L5/00 ,  H04W24/10 ,  H04W28/02 ,  H04W72/541 ,  H04W72/542

CPC classification number: H04W72/20 ,  H04L5/0048 ,  H04L5/0055 ,  H04W24/10 ,  H04W28/0236 ,  H04W72/541 ,  H04W72/542

Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.

公开(公告)号：US11683770B2

公开(公告)日：2023-06-20

申请号：US17337346

申请日：2021-06-02

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W56/00 ,  H04W72/04 ,  H04W72/27 ,  H04W72/0453

CPC classification number: H04W56/0015 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2614 ,  H04W16/14 ,  H04J2011/0096 ,  H04W72/0453 ,  H04W72/27

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization sequence may be generated by applying a first phase shift to the first synchronization sequence.

公开(公告)号：US11678145B2

公开(公告)日：2023-06-13

申请号：US17330120

申请日：2021-05-25

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Alexandros Manolakos

IPC: H04W4/029 ,  G01S5/02 ,  H04L5/00

CPC classification number: H04W4/029 ,  G01S5/0257 ,  H04L5/0048

Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) performs one or more positioning measurements of positioning reference signals (PRS) transmitted by at least one set of transmission-reception points (TRPs) of one or more sets of TRPs, wherein each set of TRPs of the one or more sets of TRPs satisfies a dilution of precision (DOP) threshold, and reports the one or more positioning measurements or location information derived from the one or more positioning measurements.

公开(公告)号：US11677518B2

公开(公告)日：2023-06-13

申请号：US17184209

申请日：2021-02-24

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L5/00 ,  H04L27/10 ,  H04L1/00 ,  H04L27/26 ,  H04J13/00

CPC classification number: H04L5/0035 ,  H04J13/0059 ,  H04L1/0013 ,  H04L1/0069 ,  H04L5/0044 ,  H04L27/103 ,  H04L27/2613 ,  H04L5/0048

Abstract: A receiver is configured to detect a plurality of signals on a plurality of subbands over a communication channel that operates on a shared or an unlicensed spectrum. Additionally, the receiver is configured to perform joint correlation over a time domain and a frequency domain of each successive signal of the plurality of signals. Moreover, the receiver is configured to determine a sequence based on the joint correlation. Additionally, the receiver is configured to decode transmission information from the sequence.

公开(公告)号：US11671975B2

公开(公告)日：2023-06-06

申请号：US16949710

申请日：2020-11-11

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Jing Sun ,  Xiaoxia Zhang ,  Mostafa Khoshnevisan

IPC: H04W72/23 ,  H04L1/1812 ,  H04W72/0453

CPC classification number: H04W72/23 ,  H04L1/1812 ,  H04W72/0453

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for one-shot hybrid automatic repeat request (HARQ) feedback for a user equipment (UE). In one aspect, a configuration of whether and in what circumstances a new data indicator (NDI) may be provided by the UE is disclosed. In another aspect, one or more rules for one-shot HARQ feedback reporting when the UE has received a semi-persistent scheduling (SPS) allocation release are disclosed.

公开(公告)号：US11665700B2

公开(公告)日：2023-05-30

申请号：US17125059

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Tao Luo ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04W72/14 ,  H04L5/00 ,  H04W74/08 ,  H04W72/0446 ,  H04L1/1812

CPC classification number: H04W72/14 ,  H04L1/1812 ,  H04L5/0055 ,  H04W72/042 ,  H04W72/0446 ,  H04W74/0808

Abstract: Aspects are provided which improve LBT by associating contention windows with transmission burst lengths and by allowing contention windows and maximum burst lengths to be adjusted based on interference activity. For downlink, a UE receives a PG for a downlink transmission from a base station indicating a CCA length based on a contention window size associated at least with a burst length for the downlink transmission. The UE performs, after receiving the pre-grant, a CCA based on the CCA length, transmits an APG to the base station when the CCA is successful, and receives the downlink transmission in response to the APG. For uplink, the base station performs a CCA based on a contention window associated at least with a burst length for an uplink transmission, transmits an uplink grant to the UE when the CCA is successful, and receives the uplink transmission in response to the uplink grant.