公开(公告)号：US20210135832A1

公开(公告)日：2021-05-06

申请号：US16949305

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Peter Pui Lok ANG ,  Tingfang JI

IPC: H04L5/14 ,  H04L7/033 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W24/08 ,  H04W74/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a guard period associated with switching from a first communication mode to a second communication mode. The UE may be operating in a half-duplex frequency division duplexing mode of operation. The guard period may be determined based at least in part on at least one of: a number of phased locked loops to be used for the first communication mode and the second communication mode, and a particular subcarrier spacing associated with the UE. The UE may switch from the first communication mode to the second communication mode based at least in part on the guard period. Numerous other aspects are provided.

公开(公告)号：US20210105732A1

公开(公告)日：2021-04-08

申请号：US17026538

申请日：2020-09-21

Applicant: QUALCOMM Incorporated

Inventor： Kazuki TAKEDA ,  Hung Dinh LY ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W56/00 ,  H04L5/00 ,  H04W74/08

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encored on computer storage media, for fifth generation (5G)-new radio (NR) physical layer (PHY) timing synchronization. In one aspect, a user equipment (UE) computing device may determine a new timing advance (TA) between downlink frames and uplink frames (NTA_new) for a base station (BS) and determine whether the NTA_new may be within a timing advance acceptable range. In another aspect, a BS may determine a timing advance command (TA) for a timing advance group (TAG) for the BS, and send the TA to the UE computing device. In determining the timing advance command, the TA may be configured by the BS to cause the UE computing device to determine that a new timing advance between downlink frames and uplink frames (NTA_new) for the BS using the TA is within a timing advance acceptable range.

公开(公告)号：US20210100028A1

公开(公告)日：2021-04-01

申请号：US17031084

申请日：2020-09-24

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Jing LEI

IPC: H04W74/00 ,  H04W74/08 ,  H04L5/00 ,  H04W72/04 ,  H04W24/10 ,  H04W76/27

Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, to transmission of a physical uplink control channel (PUCCH) transmission to acknowledge a second message of a two-step random access channel (RACH) procedure.

公开(公告)号：US20210084689A1

公开(公告)日：2021-03-18

申请号：US17020778

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY

IPC: H04W74/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify an aggregation parameter for a Physical Uplink Shared Channel (PUSCH) transmission in a random access procedure, determine a repetition level for the PUSCH transmission based on the aggregation parameter, and transmit, as part of the random access procedure, the PUSCH transmission according to the repetition level. A base station may determine a repetition level for a Physical Uplink Shared Channel (PUSCH) transmission in a random access procedure, transmit, to a user equipment (UE), an aggregation parameter indicating the repetition level, and receive, as part of the random access procedure, the PUSCH transmission according to the repetition level.

公开(公告)号：US20210084688A1

公开(公告)日：2021-03-18

申请号：US17005020

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  June NAMGOONG ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Krishna Kiran MUKKAVILLI ,  Tingfang JI ,  Huilin XU ,  Shimman Arvind PATEL ,  Wanshi CHEN

IPC: H04W74/08 ,  H04L5/14 ,  H04W76/27 ,  H04W24/10 ,  H04W52/36

Abstract: Aspects described herein relate to determining whether full duplex (FD) communications are configured during resources for communicating one or more messages of a random access procedure, where the FD communications comprising uplink communications and downlink communications occurring in a same frequency band, and responsive to the determining whether the FD communications are configured during the resources, transmitting the one or more messages of the random access procedure using the resources.

公开(公告)号：US20210068021A1

公开(公告)日：2021-03-04

申请号：US17004600

申请日：2020-08-27

Applicant: QUALCOMM Incorporated

Inventor： Olufunmilola Omolade AWONIYI-OTERI ,  Tao LUO ,  Hung Dinh LY ,  Yan ZHOU

IPC: H04W36/18 ,  H04W72/12

Abstract: In an aspect, the present disclosure includes a method, apparatus, and computer readable medium for wireless communications for connecting, by a user equipment (UE), to a source cell via a first transmission configuration indication (TCI) state; connecting, by the UE, to a target cell via a second TCI state during a handover from the source cell to the target cell; determining, by the UE, whether a first transmission using the first TCI state overlaps in time with a second transmission using the second TCI state; and performing, by the UE, TCI selection between the first beam and the second TCI state based at least in part on the determination of whether the first transmission using the first TCI state overlaps or does not overlap with the second transmission using the second TCI state.

公开(公告)号：US20210045075A1

公开(公告)日：2021-02-11

申请号：US16922795

申请日：2020-07-07

Applicant: QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Hung Dinh LY ,  Huilin XU

IPC: H04W56/00 ,  H04W64/00 ,  H04B7/06 ,  H04L5/00 ,  H04W24/08 ,  H04W76/27

Abstract: In an embodiment, a UE determines a timing for a serving cell, obtains a location of a non-serving cell, determines a location of the UE, and estimates a timing for the non-serving cell based at least in part on the timing for the serving cell, the location of the non-serving cell and the location of the UE.

公开(公告)号：US20200267609A1

公开(公告)日：2020-08-20

申请号：US16794091

申请日：2020-02-18

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Peter GAAL ,  Tao LUO ,  Ozcan OZTURK ,  Karthika PALADUGU

IPC: H04W36/00 ,  H04W56/00

Abstract: This disclosure provides systems, methods and apparatus for determining a target base station timing advance value between a user equipment (UE) and target base station in connection with a random access channel (RACH)-less handover procedure. In one aspect, the UE may determine the target base station's timing advance based at least in part on a timing difference between the target base station and the source base station and based at least in part on a timing offset associated with an uplink and a downlink of the UE. In some aspects, the target base station may determine the timing advance using an uplink reference signal of the UE. In some aspects, the UE may report a timing difference between the target base station and the source base station, and the source cell may determine a timing advance based at least in part on the timing difference.

公开(公告)号：US20200252975A1

公开(公告)日：2020-08-06

申请号：US16777724

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Seyong PARK ,  Linhai HE ,  Jay Kumar SUNDARARAJAN ,  Hung Dinh LY ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W74/08 ,  H04W76/27 ,  H04B7/01 ,  H04L27/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station (BS), a signaling communication that indicates one or more preamble sequence configurations. Each of the preamble sequence configurations may specify a respective plurality of preamble sequence rules for a different random access channel (RACH) procedure type. The UE may generate, based at least in part on a plurality of preamble sequence rules for a preamble sequence configuration of the one or more preamble sequence configurations, a preamble sequence for a RACH communication in a RACH procedure. Numerous other aspects are provided.

公开(公告)号：US20200236716A1

公开(公告)日：2020-07-23

申请号：US16743673

申请日：2020-01-15

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Hung Dinh LY ,  Yi HUANG ,  Peter GAAL ,  Joseph Binamira SORIAGA ,  Amir AMINZADEH GOHARI ,  Wanshi CHEN ,  Linhai HE ,  Tingfang JI

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

Abstract: A user equipment (UE) may be configured to receive configuration information from a base station, and the configuration information may indicate at least two different random access channel (RACH) request configuration parameters that each is associated with a respective radio resource control (RRC) state. The UE may be further configured to generate a first message associated with a two-step RACH procedure including a preamble and a payload, the payload including data on an uplink data channel and at least one reference signal. The UE may be further configured to transmit the first message to the base station using at least one of the at least two different RACH request configuration parameters that corresponds to an RRC state of the UE. The preamble may be transmitted on a first set of resources associated with a RACH occasion, and the payload may be transmitted on a second set of resources.