公开(公告)号：US20210127253A1

公开(公告)日：2021-04-29

申请号：US17078905

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Jing Sun ,  Yisheng Xue ,  Xiaoxia Zhang ,  Yongbin Wei

IPC: H04W8/00 ,  H04W72/02 ,  H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In a first case, a first user equipment (UE) may transmit to a second UE a sidelink discovery message preamble corresponding to a sidelink discovery message. The first UE may identify resources for transmission of the sidelink discovery messages based on the sidelink discovery message preamble. The first UE may either transmit the sidelink discovery message to the second UE or may receive the sidelink discovery message from the second UE using the identified resources for the transmission of the sidelink discovery message. In some cases, the second UE may transmit sidelink control information (SCI) to the first UE, and may transmit a sidelink discovery message to the first UE based on resources identified in the SCI. In some cases, the first UE may transmit the sidelink discovery message without transmission of a preamble or a SCI.

公开(公告)号：US20210119758A1

公开(公告)日：2021-04-22

申请号：US17019978

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Jing Sun ,  Wooseok Nam ,  Tao Luo ,  Xiaoxia Zhang ,  Zhifei Fan ,  Akula Reddy ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Snnivas Yerramalli

IPC: H04L5/00 ,  H04W72/04 ,  H04W56/00

Abstract: Subcarrier spacing (SCS) for data may be adapted or dynamically configured based on the occurrence or presence of a synchronization signal block (SSB) transmission. For example, during a SSB transmission, the SCS of data may be automatically switched from some default data SCS to a second SCS (e.g., the SCS of the SSB) to allow for frequency division multiplexing (FDM) of data and SSB where the data and SSB use the same numerology. As such, communicating devices (e.g., a base station and a user equipment (UE)) may identify some location or configuration for a SSB, and may determine a second subcarrier spacing (e.g., a subcarrier spacing associated with the SSB) such that the SCS of data may be adapted to the second subcarrier spacing during the FDM of the SSB and the data. The SSB and data may thus be contemporaneously transmitted or received using the second SCS.

公开(公告)号：US10986665B2

公开(公告)日：2021-04-20

申请号：US16046500

申请日：2018-07-26

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Xiaoxia Zhang ,  Jing Sun ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W74/08 ,  H01Q1/24 ,  H01Q21/00 ,  H04L12/26 ,  H04W72/08 ,  H04W88/08

Abstract: Quasi-colocation (QCL) for listen before talk (LBT) procedures is disclosed. A base station having a plurality of antennas may identify one or more groups of QCL antennas. Various aspects provide for different rules defining the QCL relationship, such as base on interference experienced by the antennas, a physical or logical connection of the antennas and LBT coupling, or synchronization. QCL may further be determined across multiple shared channels, such as based on frequency separation or frequency band of the channels. Once grouped as QCL, the base station performs the LBT procedure to reserve access to the one or more shared communication channels. If the LBT is successful, the base station may then transmit a channel reservation preamble on the shared communication channels in response.

公开(公告)号：US10986514B2

公开(公告)日：2021-04-20

申请号：US15445910

申请日：2017-02-28

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Xiaoxia Zhang

IPC: H04W24/02 ,  H04L5/00 ,  H04L27/26 ,  H04J13/14 ,  H04L27/00 ,  H04J11/00 ,  H04J13/00 ,  H04W40/24 ,  H04W74/00

Abstract: An eNB may determine a root for a sequence to be included in a signal to a UE. The eNB may generate a generalized Chu sequence based on the root and scramble the generalized Chu sequence using a pseudorandom sequence that is common to a plurality of eNBs. The eNB may transmit the scrambled generalized Chu sequence to indicate the beginning of a downlink transmission. The UE may receive this scrambled generalized Chu sequence and determine if a beginning of a downlink transmission from a serving eNB based on the received generalized Chu sequence and an expected generalized Chu sequence.

公开(公告)号：US10985867B2

公开(公告)日：2021-04-20

申请号：US16418241

申请日：2019-05-21

Applicant: QUALCOMM incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Ananta Narayanan Thyagarajan ,  Kapil Bhattad

IPC: H04W72/12 ,  H04L1/00 ,  H04L5/00 ,  H04W74/08 ,  H04W76/27 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a UE or base station, may identify a rate matching resource set for a transmission time interval (TTI) of a shared channel, where the rate matching resource set includes a set of symbols of the TTI allocated for rate matching. In some cases, the wireless device may identify a rate matching configuration for the rate matching resource set based at least in part on a multi-TTI grant for the shared channel, and perform rate matching of a set of data for transmission via the TTI based on the rate matching resource set and the rate matching configuration. In some cases, the wireless device may transmit, or receive, the rate-matched set of data via the one or more TTIs, in accordance with the multi-TTI grant, based on communications with another wireless device.

公开(公告)号：US20210112561A1

公开(公告)日：2021-04-15

申请号：US17066066

申请日：2020-10-08

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Xiaoxia Zhang ,  Mostafa Khoshnevisan ,  Jing Sun ,  Tao Luo ,  Peter Gaal ,  Arumugam Chendamarai Kannan

IPC: H04W72/04 ,  H04W72/10 ,  H04W80/02 ,  H04W24/08 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described for concurrent communications between multiple transmission-reception points (TRPs) and a user equipment (UE). A default beam for each of the TRPs may be determined, and in the case that the default beams are unable to be concurrently received at the UE, a prioritization rule may be applied to determine which TRP uses the initially determined default beam, where the other TRP(s) may use a different beam. A UE also may be configured with a subset of control resource sets for each TRP, such that beams associated with different configured subsets are compatible and able to be concurrently received at the UE. Other techniques for providing compatibility between beams of multiple concurrent TRP transmissions include determination of a first beam, and selection of a second beam based on a mapping to the first beam, or explicit configuration by a base station.

公开(公告)号：US20210111835A1

公开(公告)日：2021-04-15

申请号：US17035459

申请日：2020-09-28

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Jing Sun ,  Tao Luo ,  Le Liu ,  Kazuki Takeda ,  Alberto Rico Alvarino ,  Wanshi Chen ,  Xipeng Zhu ,  Peter Gaal

IPC: H04L1/16 ,  H04L5/00 ,  H04W8/24 ,  H04W72/04 ,  H04W72/02

Abstract: The disclosure relates to methods, devices, and systems for wireless communications. In some wireless communications systems, a base station may transmit a multicast message to a group of user equipment (UEs), and the UEs may provide feedback for the multicast message. In some implementations, the base station may configure the UEs to transmit feedback for multicast messages. In some example, the UEs may transmit group-negative acknowledgment (NACK) feedback information for multicast messages that are not successfully received at the UEs. In some other examples, each UE may be configured with UE-specific uplink control channel resources for transmitting hybrid automatic repeat request (HARQ) feedback for a multicast message. In some implementations, a UE may support feedback for both unicast and multicast messages. The semi-static codebook for unicast, multicast, or both may account for whether the UE is capable of concurrently receiving unicast and multicast messages in a slot.

公开(公告)号：US10972223B2

公开(公告)日：2021-04-06

申请号：US16215988

申请日：2018-12-11

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Qingjiang Tian ,  Jing Sun

IPC: H04L1/16 ,  H04L1/18 ,  H04L1/00 ,  H04W72/04 ,  H04W72/08

Abstract: Timing considerations for autonomous uplink (AUL) downlink feedback information (AUL-DFI) is disclosed. With the flexible timeline for new radio (NR) operations, signaling of the processing timeline may be used for the served user equipments (UEs) to properly interpret the acknowledgement information in the AUL-DFI. The UE receives a signal identifying a minimum processing time of the serving base station to process AUL. Using the knowledge of the minimum processing time, the UE determines which of the outstanding AUL transmissions are accurately addressed in the AUL-DFI and which are still pending. Additional signaling to the UE may instruct the UE when to implement any changes to transmission parameters also signaled via the AUL-DFI. Slots prior to the indicated change time will be transmitted using the current parameters, while slots after the indicated time will use the updated parameters from the AUL-DFI.

公开(公告)号：US10966225B2

公开(公告)日：2021-03-30

申请号：US16570076

申请日：2019-09-13

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Wanshi Chen ,  Shimman Arvind Patel ,  Jing Sun ,  Seyedkianoush Hosseini

IPC: H04W4/00 ,  H04W72/12 ,  H04L5/00 ,  H04W28/02 ,  H04W76/15

Abstract: Described techniques provide for prioritization of radio bearers and logical channels based on mixed transmission time interval (TTI) durations or numerologies of the bearers or logical channels. Two or more bearers may be identified for uplink data transmission that carry data to be transmitted using different TTI durations or numerologies. Each bearer may be prioritized based on the associated bearer type, TTI duration or numerology, or combinations thereof. Additionally, one or more logical channels may be associated with one or more bearers, and also prioritized based on the associated bearer type, TTI duration or numerology, or combinations thereof. A buffer status report (BSR) may be generated that has one or more portions associated with the different priorities of bearers or logical channels. Buffer information associated with the higher priority bearers or logical channels may be provided ahead of buffer information associated with lower priority bearers or logical channels.

公开(公告)号：US10965514B2

公开(公告)日：2021-03-30

申请号：US16168629

申请日：2018-10-23

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Yongbin Wei ,  Tamer Kadous ,  Zhifei Fan ,  Jing Sun

IPC: H04L27/26 ,  H04L27/00 ,  H04L25/02 ,  H04L27/227 ,  H04W72/04 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless systems, different wireless devices may communicate using different radio access technologies (RATs) in a shared radio frequency spectrum. Prior to communicating on a channel in the shared radio frequency spectrum, a wireless device may transmit a training field as part of a preamble in a transmission on the channel to reserve the channel for the transmission. As described herein, a training field transmitted by a wireless device using one RAT may be transmitted with an autocorrelation property associated with training fields of another RAT. As such, a wireless device configured to communicate using the other RAT may be able to receive and identify the training field (e.g., based on the autocorrelation property), and the wireless device may use the additional techniques described herein to determine an availability of the channel based on the training field.