公开(公告)号：US11038727B2

公开(公告)日：2021-06-15

申请号：US16664178

申请日：2019-10-25

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Jing Sun ,  Farhad Meshkati ,  Rajat Prakash ,  Yongbin Wei

IPC: H04L27/00 ,  H04L25/02 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a first set of parameters based at least in part on a first reference signal received from a first transmit receive point (TRP) and a second set of parameters based at least in part on a second reference signal received from a second TRP; determine a common parameter using the first set of parameters and the second set of parameters; and perform a tracking loop operation using the common parameter or the first set of parameters and the second set of parameters, wherein the tracking loop operation comprises at least one of a frequency tracking loop operation or a time tracking loop operation. Numerous other aspects are provided.

公开(公告)号：US11032850B2

公开(公告)日：2021-06-08

申请号：US15619063

申请日：2017-06-09

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Jing Sun

IPC: H04W74/08 ,  H04W72/04 ,  H04W52/32 ,  H04L5/00 ,  H04W52/34

Abstract: Certain aspects of the disclosure relate to techniques and apparatus for improving random access for SRS switching in a wireless network. Prior to transmitting a SRS, a UE may interrupt communication on a first carrier to switch from the first carrier to a second carrier to transmit a PRACH. To reduce interruption to the first carrier, the UE may use the beginning symbol(s) of a UpPTS on the second carrier to transmit the PRACH. In addition, to reduce interruption to the first carrier, the UE may monitor for another PDCCH order before transmitting another PRACH. Further, aspects of the present disclosure provide techniques and apparatus for jointly triggering SRS transmissions and performing power control for SRS transmissions. A BS may trigger SRS transmissions from multiple UEs, trigger SRS transmissions from multiple carriers from the same UE at the same time and/or perform power control separately for each carrier.

公开(公告)号：US11032813B2

公开(公告)日：2021-06-08

申请号：US16805546

申请日：2020-02-28

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L1/18

Abstract: Certain aspects of the present disclosure provide techniques for rate-matching for a transmission by multiple transmission configuration indicator (TCI) states, such as a multiple transmission reception point (multi-TRP) transmission. A method by a user equipment (UE) includes receiving one downlink control information (DCI) scheduling a downlink transmission associated with multiple transmission configuration indicator (TCI) states. The UE determines whether the downlink transmission is associated with one rate matching or is associated with a separate rate matching for each of the multiple TCI states. The UE derate matches the downlink transmission based on the determination.

公开(公告)号：US11032029B2

公开(公告)日：2021-06-08

申请号：US16899548

申请日：2020-06-11

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Jing Sun ,  Kapil Bhattad ,  Xiaoxia Zhang

IPC: H04L12/28 ,  H04L1/16 ,  H04W72/12 ,  H04W72/04 ,  H04B7/0456 ,  H04J1/16

Abstract: Methods, systems, and devices for wireless communications are described that support group-based acknowledgment feedback techniques. Two or more different groups of downlink transmissions may each have an associated transport block (TB) level or code block group (CBG) level group-based acknowledgment feedback, and a base station may transmit downlink control information to a UE that indicates one or more parameters that are used to determine which downlink transmissions are to be reported in the group-based feedback at a TB level, CBG level, or combinations thereof. Based on the parameters in the downlink control information, the UE may determine the feedback to be reported, and a timing for when to transmit the feedback to the base station.

公开(公告)号：US20210152307A1

公开(公告)日：2021-05-20

申请号：US17097877

申请日：2020-11-13

Applicant: QUALCOMM Incorporated

Inventor： Kazuki Takeda ,  Alberto Rico Alvarino ,  Ayan Sengupta ,  Jing Sun ,  Le Liu ,  Miguel Griot ,  Mostafa Khoshnevisan ,  Peter Gaal ,  Prasad Reddy Kadiri ,  Xiaoxia Zhang ,  Tao Luo ,  Umesh Phuyal ,  Wanshi Chen

IPC: H04L5/00 ,  H04W24/08 ,  H04W4/06

Abstract: Methods, systems, and devices for wireless communications are described. A set of reference signal resources that are configured for sounding reference signal transmissions may be shared among user equipments (UEs) that are enabled to receive multicast communications. Each of the shared set of reference signal resources may be associated with set(s) of channel state information. UEs may measure a multicast channel to determine channel state information for the multicast channel and transmit sounding reference signals over one of the shared reference signal resources that is associated with the set of channel state information determined by the UE. A base station that receives the sounding reference signal may transmit a subsequent multicast transmission for the UEs using transmission parameters that are adapted for the set(s) of channel state information associated with the occupied sounding reference signal resource.

公开(公告)号：US11013003B2

公开(公告)日：2021-05-18

申请号：US16526410

申请日：2019-07-30

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Huilin Xu ,  Wanshi Chen ,  Heechoon Lee ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W72/04 ,  H04W88/06 ,  H04W80/02 ,  H04W76/27

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may determine to configure a user equipment (UE) to operate in a transmission/reception point (TRP) mode, wherein the TRP mode is a single-TRP mode or a multi-TRP mode. The BS may configure the UE to operate in the TRP mode based at least in part on a bandwidth part (BWP) switch or a trigger to switch between the multi-TRP mode and the single-TRP mode within a BWP. Numerous other aspects are provided.

公开(公告)号：US11012994B2

公开(公告)日：2021-05-18

申请号：US17033565

申请日：2020-09-25

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Wei Yang ,  Jing Sun

IPC: H04W28/04 ,  H04W72/04 ,  H04W88/08 ,  H04L5/00 ,  H04L1/18

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiple downlink control information (DCI) message handling for multiple control resource set (CORESET) groups. In one aspect, a user equipment (UE) may provide separate or joint feedback for data messages received from different CORESET groups. In some examples, the UE may be configured with code block group (CBG)-based transmissions for a component carrier (CC) or a CORESET group in a CC. If implementing a dynamic codebook, the UE may track separate transport block (TB)-based and CBG-based downlink assignment indexes (DAIs) for each CORESET group or may track joint TB-based and CBG-based DAIs across the set of CORESET groups to handle the CBG configuration. Additionally, or alternatively, if implementing a semi-static codebook, the UE may apply skipping rules across the set of CORESET groups or separately for each CORESET group to reduce signaling overhead.

公开(公告)号：US20210144639A1

公开(公告)日：2021-05-13

申请号：US17090721

申请日：2020-11-05

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Alberto Rico Alvarino ,  Le Liu ,  Peter Gaal ,  Xipeng Zhu

IPC: H04W52/02

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, such as a user equipment (UE) may monitor a pre-wakeup window during an inactive duration of a multicast discontinuous reception (DRX) cycle that includes multiple active durations and multiple inactive durations. The UE may receive, in the pre-wakeup window, a wakeup signal that indicates a quantity of the active durations in the multicast DRX cycle that the UE is to monitor and the UE may monitor the indicated quantity of active durations for multicast signals for the UE.

公开(公告)号：US11006403B2

公开(公告)日：2021-05-11

申请号：US16548583

申请日：2019-08-22

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Makesh Pravin John Wilson ,  Alexandros Manolakos ,  Tao Luo

IPC: H04W72/04 ,  H04W72/12

Abstract: Aspects of the disclosure relate to determining a transmission configuration indication (TCI) state for receiving a multi-transmission point (TRP) communication. A receiving device receives a configuration message indicating a lowest control resource set identifier (CORESET ID) for receiving one or more downlink control information (DCI) and determines whether a state of the receiving device is within a scheduling threshold duration for decoding DCI. The receiving device then determines a TCI state for receiving data based on a TCI state associated with the lowest CORESET ID if the state of the receiving device is within the scheduling threshold duration, wherein the TCI state associated with the lowest CORESET ID indicates one or more sets of quasi co-location (QCL) parameters. The receiving device then receives the data from one or more transmission points (TRPs) based on the one or more sets of QCL parameters.

公开(公告)号：US20210135918A1

公开(公告)日：2021-05-06

申请号：US17082603

申请日：2020-10-28

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may identify, for an initial slot of a periodic interval, a number of symbols included in the initial slot and a length of cyclic prefixes used for the symbols included in the initial slot based on a subcarrier spacing that is configured for wireless communication. The length of a first set of cyclic prefixes may be based on a length of a cyclic prefix calculated for an initial symbol of the initial slot at the configured subcarrier spacing. The wireless device may perform communications based on the determined number of symbols and length of cyclic prefixes included in the initial slot. Performing communications may include allocating resources based on a length of the cyclic prefixes used for the symbols included in the initial slot.