公开(公告)号：US20210392516A1

公开(公告)日：2021-12-16

申请号：US17343390

申请日：2021-06-09

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo PARK ,  Wooseok NAM ,  Tao LUO ,  Junyi LI ,  Juan MONTOJO ,  Jing SUN ,  Xiaoxia ZHANG ,  Peter GAAL ,  Taesang YOO ,  Simone MERLIN ,  Srinivas YERRAMALLI

IPC: H04W16/28 ,  H04W24/10 ,  H04L5/00

Abstract: Disclosed are techniques for environment sensing. In an aspect, a first network node measures one or more first reference signals on a first carrier frequency, the one or more first reference signals received from a second network node to enable determination of one or more first characteristics associated with one or more target objects, and measures one or more second reference signals on a second carrier frequency, the one or more second reference signals received from the second network node to enable determination of one or more second characteristics associated with the one or more target objects, wherein an accuracy of the one or more second characteristics is higher than an accuracy of the one or more first characteristics based on the one or more first reference signals being measured on the first carrier frequency and the one or more second reference signals being measured on the second carrier frequency.

公开(公告)号：US20210360659A1

公开(公告)日：2021-11-18

申请号：US17163196

申请日：2021-01-29

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Tao LUO ,  Jing SUN ,  Wooseok NAM ,  Qiang WU ,  Srinivas YERRAMALLI ,  Zhifei FAN ,  Arumugam CHENDAMARAI KANNAN

IPC: H04W72/12 ,  H04W72/04 ,  H04L27/26 ,  H04L1/18 ,  H04W8/24

Abstract: A configuration to allow for scheduling communication with a UE having associated characteristics based on a timing indication. The apparatus receives, from a UE, a timing indication associated with a bandwidth, a subcarrier spacing, or a waveform. The timing indication identifying a delay duration based on a processing timeline for the UE. The apparatus receives from the UE, or transmits to the UE, a first data channel having the bandwidth, the subcarrier spacing, or the waveform scheduled based on the timing indication. The first data channel is transmitted or received at a first time based on the timing indication.

公开(公告)号：US20210360600A1

公开(公告)日：2021-11-18

申请号：US17302861

申请日：2021-05-13

Applicant: QUALCOMM Incorporated

Inventor： Arumugam CHENDAMARAI KANNAN ,  Jing SUN ,  Xiaoxia ZHANG ,  Vinay CHANDE ,  Srinivas YERRAMALLI ,  Tao LUO ,  Juan MONTOJO

IPC: H04W72/04 ,  H04W16/28 ,  H04W72/12 ,  H04L5/00

Abstract: The present disclosure relates to apparatus and methods of monitoring a region by a transmitting device within a wireless medium for transmissions using at least one directional beam covering the region. Upon determining that the region in the wireless medium is free of transmissions, the transmitting device transmits to a plurality of wireless devices in the region using a plurality of spatially separated directional beams. Other aspects of the disclosure relate to apparatus and methods for receiving an instruction, e.g., at a user equipment (UE), to perform a channel assessment at a first time. The UE monitors a region within a wireless medium for transmissions after receiving the instruction. Upon determining that the region is free of transmissions, the UE may send an acknowledgment of the received instruction

公开(公告)号：US20210258896A1

公开(公告)日：2021-08-19

申请号：US17153474

申请日：2021-01-20

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL ,  Xiaoxia ZHANG ,  Jing SUN ,  Srinivas YERRAMALLI ,  Zhifei FAN ,  Wooseok NAM ,  Tao LUO ,  Juan MONTOJO

IPC: H04W56/00 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a synchronization signal block (SSB) within a discovery reference signal (DRS) transmission window that includes more than 64 candidate SSB positions, determine an index value of the SSB based at least in part on an indexing scheme for SSBs that are included in the DRS transmission window, wherein the indexing scheme includes one of a consecutive indexing scheme or a non-consecutive indexing scheme; and determine a cell timing based at least in part on the index value. Numerous other aspects are described.

公开(公告)号：US20210250998A1

公开(公告)日：2021-08-12

申请号：US17125021

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Xiaoxia ZHANG ,  Vinay CHANDE ,  Arumugam CHENDAMARAI KANNAN ,  Srinivas YERRAMALLI ,  Tao LUO ,  Juan MONTOJO ,  Aleksandar DAMNJANOVIC

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04

Abstract: Aspects are provided that allow a base station to provide a user equipment (UE) multiple timing opportunities to transmit an acknowledgment to a pre-grant (APG) after receiving a pre-grant for a downlink transmission. The base station transmits to the UE a pre-grant for a downlink transmission from the base station, the pre-grant triggering a plurality of timing opportunities for the UE to send an APG to the base station. The UE performs, after receiving the pre-grant, a clear channel assessment (CCA) during at least one timing opportunity of the plurality of timing opportunities. The UE transmits one or more APGs to the base station when the CCA is successful, and the UE receives the downlink transmission from the base station in response to the one or more APGs. The UE transmits the one or more APGs to the base station until the downlink transmission is received from the base station.

公开(公告)号：US20210250982A1

公开(公告)日：2021-08-12

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: H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04W74/08

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.

公开(公告)号：US20210250078A1

公开(公告)日：2021-08-12

申请号：US17136204

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Arumugam CHENDAMARAI KANNAN ,  Vinay CHANDE ,  Jing SUN ,  Xiaoxia ZHANG ,  Tao LUO

IPC: H04B7/08 ,  H04W72/04 ,  H04L5/00 ,  H04W74/08 ,  H04W48/02 ,  H04W72/14

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for managing beam selection. In one aspect, an initiating wireless device may determine whether a pre-grant acknowledgement associated with a first beam has been received from a responding wireless device within an expected receive time. The initiating wireless device may generate an indication to prevent the initiating wireless device from using the first beam for a blocking duration in response to determining that the pre-grant acknowledgement associated with the first beam has not been received within the expected receive time.

公开(公告)号：US20210160036A1

公开(公告)日：2021-05-27

申请号：US16951665

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Akula REDDY ,  Jing SUN ,  Tao LUO ,  Xiaoxia ZHANG ,  Srinivas YERRAMALLI ,  Ahmed Abdelaziz Ibrahim Abdelaziz ZEWAIL ,  Zhifei FAN ,  Sungwoo PARK ,  Wooseok NAM

IPC: H04L5/00 ,  H04W72/04

Abstract: A wireless communication system utilizes a synchronization signal block (SSB) structure to enable beam switching at higher sub carrier spacing (SCS) or uplink transmissions within an SSB. The SSB structure has a first SCS for an SSB transmission and a second SCS for a data transmission. The SSB structure is based on the first SCS and the second SCS, with the SSB structure including at least one gap between SSB symbols or between SSBs. The wireless communication system transmits or receives an SSB based on the SSB structure. A base station may transmit a downlink signal during the gap, for example, where the second SCS is much greater than the first SCS. A user equipment may transmit an uplink signal such as an acknowledgment during the at least one gap. The user equipment or the base station may perform analog beam switching during the at least one gap between SSBs.

公开(公告)号：US20210058889A1

公开(公告)日：2021-02-25

申请号：US16989745

申请日：2020-08-10

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Srinivas YERRAMALLI ,  Taesang YOO ,  Junyi LI ,  Yongbin WEI ,  Sudhir Kumar BAGHEL ,  Shailesh PATIL ,  Kapil GULATI ,  Chang-Sik CHOI

IPC: H04W64/00 ,  H04W4/029 ,  H04W4/40 ,  H04L5/00 ,  G01S11/04 ,  G01S5/02 ,  H04W74/08

Abstract: This disclosure provides systems, methods and apparatuses for wireless communication that may allow a user equipment (UE) to determine its relative position and distances to other UEs more accurately than standard vehicle-to-everything (V2X) communications allow. In some implementations, a UE (or other wireless communication device) participating in a positioning operation may transmit and receive positioning signals on an unlicensed radio band, and may transmit and receive non-positioning signals on a V2X channel (or on another suitable channel) of a radio access network (RAN). The positioning signals may include positioning reference signals (PRSs) associated with observed time difference of arrival (OTDOA) positioning operations, ranging signals associated with round-trip time (RTT) positioning operations, or other suitable signals from which the position of the UE can be determined.

公开(公告)号：US20210022044A1

公开(公告)日：2021-01-21

申请号：US16927927

申请日：2020-07-13

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Jing SUN ,  Tao LUO ,  Srinivas YERRAMALLI ,  Zhifei FAN ,  Mostafa KHOSHNEVISAN ,  Wanshi CHEN ,  Juan MONTOJO ,  Peter GAAL ,  Arumugam CHENDAMARAI KANNAN

IPC: H04W28/20 ,  H04W72/04

Abstract: Aspects relate to implementing multiplexing with a single carrier waveform. In some examples, a total bandwidth may be divided into a plurality of bandwidth parts (BWPs), each including a plurality of tones. Each of the BWPs may further be divided into two or more interlaces, where each interlace includes a respective number of interleaved tones. A base station may assign each of a plurality of UEs a respective set of one or more interlaces within at least one BWP for multiplexing communication with the base station.