公开(公告)号：US20210337576A1

公开(公告)日：2021-10-28

申请号：US17240844

申请日：2021-04-26

Applicant: QUALCOMM Incorporated

Inventor： Peter GAAL ,  Yi HUANG ,  Yiqing CAO

IPC: H04W72/12 ,  H04W72/14 ,  H04W72/04

Abstract: A base station (BS) may determine (estimate) a preparation time for at least one uplink (UL) transmission by a user equipment (UE) on at least one radio frequency (RF) carrier. The BS may use the preparation time to ensure that the BS sends a grant for the at least one transmission to the UE a sufficient amount of time before the at least one transmission is scheduled to occur to give the UE sufficient time to conduct the at least one UL transmission. In some examples, the BS determines the preparation time based on adjusting an uplink preparation time according to a defined value. In some examples, the BS determines the preparation time based on a subcarrier spacing (SCS) index. The BS may select the SCS index used to determine the preparation time from smallest of the SCS indexes configured for the different RF carriers.

公开(公告)号：US20210274515A1

公开(公告)日：2021-09-02

申请号：US17260582

申请日：2019-08-01

Applicant: Jing LEI ,  Wanshi CHEN ,  Yiqing CAO ,  Qualcomm Incorporated

Inventor： Jing LEI ,  Wanshi CHEN ,  Yiqing CAO

IPC: H04W72/12 ,  H04W8/24 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. One or more multiple access-capable user equipments (UEs) may be grouped together for transmitting uplink multiple access communications to a base station, where the UEs may be assigned to the group based on similar capabilities or service requirements. The UE may receive configuration information based at least in part on the group to which the UE has been assigned. When assigned to a group, the UEs may also receive a group-specific scrambling code for the uplink multiple access communications, a group-specific power control for the uplink multiple access communications, time and frequency resources to be used for the uplink multiple access communications specific to the group, or a combination thereof. Additionally, the specific time and frequency resources may be defined by multiple access resource units.

公开(公告)号：US20210266778A1

公开(公告)日：2021-08-26

申请号：US17284740

申请日：2019-10-15

Applicant: QUALCOMM Incorporated

Inventor： Yiqing CAO ,  Huilin XU ,  Wanshi CHEN ,  Yuwei REN

IPC: H04W28/02 ,  H04W24/10 ,  H04B17/336 ,  H04L5/00 ,  H04W76/11

Abstract: Aspects are provided allowing a first base station to distinguish between cross-link interference and remote interference caused to a second base station and to apply different mitigation mechanisms based on the type of interference. A UE receives from a second base station a reference signal based on a reference signal identifier that indicates a location of the second base station that is experiencing interference from the first base station. The UE sends to the first base station an indication of the reference signal received from the second base station. The first base station receives from the UE the indication of the reference signal from the second base station based on the reference signal identifier. The first base station applies a mitigation mechanism based on whether the reference signal identifier indicates that the second base station is a remote base station or a neighbor base station.

公开(公告)号：US20210076381A1

公开(公告)日：2021-03-11

申请号：US17040596

申请日：2019-03-25

Applicant: Qualcomm Incorporated

Inventor： Yiqing CAO ,  Wanshi CHEN ,  Jing LEI ,  Renqiu WANG

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.

公开(公告)号：US20240297761A1

公开(公告)日：2024-09-05

申请号：US18573886

申请日：2021-08-05

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Alberto RICO ALVARINO ,  Xiao Feng WANG ,  Peter GAAL ,  Changhwan PARK ,  Ayan SENGUPTA ,  Wanshi CHEN ,  Jun MA ,  Bharat SHRESTHA ,  Huilin XU ,  Umesh PHUYAL ,  Juan MONTOJO ,  Yiqing CAO

IPC: H04L5/00 ,  H04W72/1268 ,  H04W84/06

CPC classification number: H04L5/0051 ,  H04W72/1268 ,  H04W84/06

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a UE that generally includes transmitting a first sounding reference signal (SRS), from a first antenna port in a first symbol, on one or more tones determined by a first comb size and a first tone offset, transmitting a second SRS, from a second antenna port in the first symbol, on one or more tones determined by the first comb size and a second tone offset different than the first tone offset, transmitting a third SRS, from the first antenna port in a second symbol, on one or more tones determined by the first comb size and the second tone offset, and transmitting a fourth SRS, from the second antenna port in the second symbol, on one or more tones determined by the first comb size and the first tone offset.

公开(公告)号：US20240243821A1

公开(公告)日：2024-07-18

申请号：US18562269

申请日：2021-07-09

Applicant: QUALCOMM Incorporated

Inventor： Yiqing CAO ,  Peter GAAL ,  Bin HAN ,  Ting WANG ,  Xiao Feng WANG ,  Liangping MA ,  Alberto RICO ALVARINO ,  Yan LI ,  Zhimin DU ,  Lu GAO

IPC: H04B17/318 ,  H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04W56/00

CPC classification number: H04B17/328 ,  H04B7/0626 ,  H04L5/0051 ,  H04W24/10 ,  H04W56/0015

Abstract: Aspects are provided which resolve neighbor beam-wise interference. A UE obtains a plurality of reference signals from each of at least one neighbor base station, where each of the reference signals is obtained in a different beam, and each of the neighbor base station(s) is in a different neighbor cell. The UE then measures a signal strength associated with each of the reference signals, and the UE indicates one or more of the reference signals to a serving base station in a serving cell, where the signal strength of each of the reference signal(s) indicated to the serving base station exceeds a threshold RSRP. After the serving base station obtains the indication from the UE, the serving base station coordinates with the neighbor base station(s) to modify one or more transmission parameters in response to the indication.

公开(公告)号：US20240215013A1

公开(公告)日：2024-06-27

申请号：US18557776

申请日：2021-07-23

Applicant: QUALCOMM Incorporated

Inventor： Yiqing CAO ,  Peter GAAL ,  Alberto RICO ALVARINO ,  Juan MONTOJO ,  Wanshi CHEN ,  Kazuki TAKEDA ,  Bin HAN ,  Yan LI ,  Zhimin DU ,  Kefeng ZHANG

IPC: H04W72/1263 ,  H04W24/10 ,  H04W72/51

CPC classification number: H04W72/1263 ,  H04W24/10 ,  H04W72/51

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station. UE capability information including a first indication of a first capability of the UE for downlink reception in a plurality of frequency spectrum bands using a first radio frequency receive chain and a second indication of a second capability of the UE for uplink transmission in the plurality of frequency spectrum bands using a second radio frequency transmit chain. The UE may receive at least one of a measurement configuration associated with downlink reference signals for the plurality of frequency spectrum bands or a transmission configuration associated with uplink reference signals for the plurality of frequency spectrum bands. Numerous other aspects are described.

公开(公告)号：US20240155592A1

公开(公告)日：2024-05-09

申请号：US18548118

申请日：2021-04-05

Applicant: QUALCOMM Incorporated

Inventor： Liangping MA ,  Xiao Feng WANG ,  Alberto RICO ALVARINO ,  Peter GAAL ,  Ayan SENGUPTA ,  Jun MA ,  Huilin XU ,  Bharat SHRESTHA ,  Umesh PHUYAL ,  Juan MONTOJO ,  Changhwan PARK ,  Wanshi CHEN ,  Yiqing CAO

IPC: H04W72/0457 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/231 ,  H04W76/20

CPC classification number: H04W72/0457 ,  H04L5/0092 ,  H04W72/0453 ,  H04W72/231 ,  H04W76/20

Abstract: Certain aspects of the present disclosure provide techniques for bandwidth part (BWP) switching by frequency shifting and/or by transmission configuration indicator (TCI) state configuration. A method that may be performed by a user equipment (UE) includes receiving a BWP configuration indicating a frequency location and bandwidth of at least a first BWP; receiving signaling indicating at least one frequency shift to determine a second BWP from a frequency location of the first BWP; and communicating on the second BWP after performing a BWP switch from the first BWP to the second BWP based on the at least one frequency shift.

公开(公告)号：US20240039672A1

公开(公告)日：2024-02-01

申请号：US18258106

申请日：2021-02-19

Applicant: QUALCOMM Incorporated

Inventor： Peter GAAL ,  Yiqing CAO ,  Alberto RICO ALVARINO ,  Yan LI ,  Kazuki TAKEDA

IPC: H04L5/00 ,  H04W72/21 ,  H04L5/14

CPC classification number: H04L5/0051 ,  H04W72/21 ,  H04L5/1469

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication for a reference signal to be transmitted on a first carrier, wherein the UE is configured for reference signal carrier switching between the first carrier and a second carrier associated with uplink data channel or control channel transmission. The UE may receive an indication for uplink transmission switching between the second carrier and a third carrier. The UE may transmit, or suspend transmission, on the third carrier during a time associated with transmission of the reference signal on the first carrier based at least in part on the UE being configured for reference signal carrier switching and uplink transmission switching. Numerous other aspects are described.

公开(公告)号：US20230269286A1

公开(公告)日：2023-08-24

申请号：US18013222

申请日：2020-08-14

Applicant: QUALCOMM Incorporated

Inventor： Yiqing CAO ,  Thomas STOCKHAMMER ,  Zhimin DU ,  Yan LI ,  Jiangsheng WANG

IPC: H04L65/611 ,  H04L65/80 ,  H04L65/612

CPC classification number: H04L65/611 ,  H04L65/80 ,  H04L65/612

Abstract: The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or one or more networks. In one aspect, the apparatus receives an MBMS video streaming service through broadcast from a first network. In addition, the apparatus determines a failure in association with the reception of the broadcasted MBMS video streaming service. Further, the apparatus receives, based on the determined failure of the broadcasted MBMS video streaming service, the MBMS video streaming service through unicast from a second network. In one configuration, the apparatus transmits information to the second network indicating that the MBMS video streaming service through broadcast from the first network has failed. In such a configuration, the MBMS video streaming service through unicast from the second network is received based on the transmitted information.