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公开(公告)号:US20230044975A1
公开(公告)日:2023-02-09
申请号:US17791615
申请日:2021-01-09
Applicant: QUALCOMM Incorporated
Inventor: Yiqing CAO , Yan LI , Ling XIE , Jie MAO , Kepei TANG , Bin HAN
Abstract: Techniques and apparatus for achieving multi-cell synchronization for dual connectivity and carrier aggregation are described. In one technique, a timing difference between a first base station (BS) and a second BS is determined, where the first BS is in an asynchronous timing configuration with respect to the second BS. A measurement configuration for measuring signal(s) from the second BS is determined, based on the timing difference. The measurement configuration is signaled to a user equipment (UE) served by the first BS. The UE performs a measurement procedure for the signal(s) in accordance with the measurement configuration. In another technique, the second BS receives a synchronization request, which includes a first time stamp, from the first BS via a network interface between the first BS and the second BS. The second BS sends a synchronization response, which includes a second time stamp, to the first BS.
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公开(公告)号:US20220338212A1
公开(公告)日:2022-10-20
申请号:US17753996
申请日:2019-10-26
Applicant: Yiqing CAO , Chenxi HAO , Peter GAAL , QUALCOMM Incorporated
Inventor: Yiqing CAO , Chenxi HAO , Peter GAAL
Abstract: Certain aspects of the present disclosure provide techniques for uplink scheduling for communication on an uplink from a user equipment (UE) to a base station (BS). The uplink scheduling is based on uplink transmission (UL Tx) switching time and/or uplink data preparation time of the UE. The uplink data preparation time is calculated based on the UL Tx switching time. For example, a UE can report to a BS at least one of an indication of a UL Tx switching time and an uplink data preparation time of the UE. In return, the UE can receive an indication of uplink scheduling from the BS, which the UE can use to communicate with the BS.
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公开(公告)号:US20220312500A1
公开(公告)日:2022-09-29
申请号:US17594847
申请日:2020-04-28
Applicant: QUALCOMM Incorporated
Inventor: Yiqing CAO , Xiao Feng WANG , Wanshi CHEN , Jing LEI , Huilin XU , Peter GAAL , Juan MONTOJO , Yan LI , Bin HAN
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a phase tracking reference signal (PTRS) configuration for a random access channel (RACH) procedure, wherein the PTRS configuration indicates a PTRS density per modulation and coding scheme (MCS). The UE may perform the RACH procedure according to the PTRS configuration and an MCS used for the RACH procedure. Numerous other aspects are provided.
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公开(公告)号:US20220312169A1
公开(公告)日:2022-09-29
申请号:US17616767
申请日:2020-06-02
Applicant: Qualcomm Incorporated
Inventor: Yiqing CAO , Jing LEI , Wanshi CHEN
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may communicate with multiple beacon devices (e.g., road side beacons), where messages from the road side beacons may be transmitted over a sidelink communications link and may be used to determine a speed and/or location of the wireless device. In some examples, the messages may carry public safety information, location information, navigation information, or other types of information, which may be used, for example, to notify the wireless device of a nearby event, to enable navigation, or the like. When receiving messages from the road side beacons, the wireless device may report a status to a base station, which may determine a relationship between transmissions from the wireless device and predict future transmissions based on the relationship. As a result, the base station may modify communications parameters in accordance with the status of the wireless device.
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公开(公告)号:US20220141879A1
公开(公告)日:2022-05-05
申请号:US17431688
申请日:2020-02-21
Applicant: Qualcomm Incorporated
Inventor: Yiqing CAO , Wanshi CHEN , Jing LEI , Joseph Binamira SORIAGA , Peter GAAL , Juan MONTOJO , Ruiming ZHENG , Peng CHENG
Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently transmitting data and control information in a first RACH message to a base station as part of a two-step RACH procedure. In particular, rather than or in addition to transmitting data and control information in a physical uplink shared channel (PUSCH) in the first RACH message, a user equipment (UE) may transmit the data and control information along with a RACH preamble in a RACH occasion in the first RACH message (e.g., when the number of bytes of data or control information to be transmitted is low). Using these techniques, in some instances, the UE may transmit the data and control information in a first RACH message without transmitting the PUSCH, and the overhead associated with transmitting the PUSCH may be eliminated.
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公开(公告)号:US20220095144A1
公开(公告)日:2022-03-24
申请号:US17421440
申请日:2020-01-09
Applicant: Qualcomm Incorporated
Inventor: Yuwei REN , Chao WEI , Huilin XU , Yiqing CAO , Tingfang JI
IPC: H04W24/10 , H04J11/00 , H04B17/318 , H04W72/04 , H04W72/08
Abstract: Methods, systems, and devices for wireless communications are described which provide for efficient backhaul communications and identification of resources for cross-link interference (CLI) measurements and reporting. A common resource pool may be configured in which CLI measurements for resources within the resource pool have a common configuration. When providing information indicating resources that are to be measured for CLI, a bitmap that indicates resources within the common resource pool may be provided with CLI measurement configurations corresponding to the common resource pool configuration. Such a bitmap may be communicated via backhaul connections between neighboring base stations when initiating a CLI measurement. Various described techniques also provide for common configuration for CLI measurements, provide for efficient reporting of CLI measurements, and provide for accurate representation of CLI based on measurements at a victim UE.
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57.
公开(公告)号:US20200314791A1
公开(公告)日:2020-10-01
申请号:US16824349
申请日:2020-03-19
Applicant: QUALCOMM Incorporated
Inventor: Sony AKKARAKARAN , Sven FISCHER , Stephen EDGE , Joseph SORIAGA , Tao LUO , Peter GAAL , Alexandros MANOLAKOS , Guttorm OPSHAUG , Zhimin DU , Yiqing CAO , Tingfang JI , Lorenzo CASACCIA
Abstract: A reference signal periodically transmitted by a base station in a wireless network can have certain proprietary properties to help prevent detection and utilization of the signal for unauthorized positioning of mobile devices. More specifically, a network node can obscure and introduce time-variation in mapping between positioning signals and a corresponding physical base stations. The network node may also introduce time variations in fields of a base station almanac (BSA) provided to subscribing user equipments (UEs). The information transmitted to the subscribing UEs may be encrypted.
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公开(公告)号:US20250150992A1
公开(公告)日:2025-05-08
申请号:US18694062
申请日:2021-11-19
Applicant: QUALCOMM Incorporated
Inventor: Yiqing CAO , Yuan KAI , Juan MONTOJO , Peter GAAL , Shuping CHEN , Bin HAN , Ting WANG , Lu GAO , Zhimin DU , Yang LIU , Yan LI , Jiangsheng WANG , Yue YIN , Qiwen DENG , Zhuo CHEN , Sony AKKARAKARAN
IPC: H04W56/00 , H04W74/0808 , H04W92/18
Abstract: Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include transmitting, to a second sidelink UE, a first sidelink synchronization block (S-SSB) in a scheduled S-SSB slot, performing a first listen-before-talk (LBT) procedure in an unlicensed frequency band, and transmitting, to the second sidelink UE, a second S-SSB in a slot before a next scheduled S-SSB slot based on the first LBT procedure being unsuccessful.
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公开(公告)号:US20240364390A1
公开(公告)日:2024-10-31
申请号:US18291205
申请日:2021-10-02
Applicant: QUALCOMM Incorporated
Inventor: Yiqing CAO , Peter GAAL , Masato KITAZOE , Yi HUANG , Gokul SRIDHARAN , Alberto RICO ALVARINO , Bin HAN
IPC: H04B7/0413 , H04B7/0404
CPC classification number: H04B7/0413 , H04B7/0404
Abstract: Aspects for enabling Multiple-Input-Multiple-Output (MIMO) communications using a plurality of transmitters across at least two supported frequency bands are disclosed. The apparatus may be a user equipment (UE) that includes, for each UE-supported frequency band, a plurality of transmitters capable when configured of coherently transmitting the received information over the frequency band with information to be transmitted to a base station. The apparatus can identify MIMO coherence capability information for the supported frequency bands on a per-band and a per-band combination basis. The apparatus may determine a proposed transmission configuration based on the MIMO capability information and may report, to the base station, the proposed transmission configuration.
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公开(公告)号:US20240324018A1
公开(公告)日:2024-09-26
申请号:US18261087
申请日:2021-02-12
Applicant: QUALCOMM Incorporated
Inventor: Liangping MA , Xiao Feng WANG , Jun MA , Peter GAAL , Juan MONTOJO , Wanshi CHEN , Alberto RICO ALVARINO , Ayan SENGUPTA , Bharat SHRESTHA , Huilin XU , Yiqing CAO , Umesh PHUYAL
IPC: H04W74/0833 , H04B7/06
CPC classification number: H04W74/0833 , H04B7/0617 , H04B7/0626
Abstract: Certain aspects of the present disclosure provide techniques for beam selection for random access. A method that may be performed by a user equipment (UE) includes receiving, from a network entity, via a first beam, system information associated with at least a first plurality of beams that are within a coverage area of the first beam. The method also includes selecting a second beam among at least the first plurality of beams based at least in part on the system information and performing a random access procedure via the selected second beam.
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