公开(公告)号：US20210400689A1

公开(公告)日：2021-12-23

申请号：US17350314

申请日：2021-06-17

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Piyush Gupta ,  Jing Sun ,  Lik Hang Silas Fong

IPC: H04W72/12 ,  H04W72/02 ,  H04W72/04 ,  H04W52/52

Abstract: Methods, systems, and devices for wireless communications are described for improving sidelink communication reliability. In some examples, a user equipment (UE) may map allocated sidelink resources from a logical domain to a physical domain, where the mapped resources may include greater frequency diversity in the physical domain. A frequency range of a sidelink control channel or of a sidelink data channel may be greater in the physical domain than in the logical domain after the mapping. In some examples, sidelink communications may be associated with an aggregation factor that represents a number of repetitions of a sidelink communication. In this example, a UE may repeat a sidelink communication within a contention-based resource pool a number of times before receiving feedback in order to increase communication reliability. A first UE may communicate a sidelink communication with a second UE using a resource mapping or repetitions of the sidelink communication.

公开(公告)号：US11191083B2

公开(公告)日：2021-11-30

申请号：US16576361

申请日：2019-09-19

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Peter Gaal ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/08 ,  H04W72/12 ,  H04W76/11 ,  H04L5/00 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for interference randomization for multiple transmission configuration indicator (multi-TCI) state communications with disjoint resource sets for certain systems, such a new radio (NR). A method for wireless communication by a user equipment (UE) is provided. The method generally includes determining a disjoint resource split of a set of resource blocks (RBs) for a multi-TCI state transmission, the determination based on a pseudo-random sequence. The UE decodes the multi-TCI state transmission based on the determination. A base station (BS) also determines the disjoint resource split based on the pseudo-random sequence and transmit the multi-TCI state transmission to a UE on a subset of the RBs based on the determination.

公开(公告)号：US11191068B2

公开(公告)日：2021-11-30

申请号：US16680272

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Makesh Pravin John Wilson ,  Arumugam Chendamarai Kannan ,  Mostafa Khoshnevisan

IPC: H04W72/04 ,  H04W24/08 ,  H04W72/08 ,  H04L5/00 ,  H04L1/18 ,  H04W72/14

Abstract: Certain aspects of the present disclosure provide techniques for per transmission configuration channel sensing. A method for wireless communication by a user equipment (UE) generally includes monitoring a plurality of dummy physical downlink control channel (PDCCH) transmissions from at least one base station (BS). The dummy PDCCH transmissions use a different transmission configuration. The UE sends acknowledgment feedback for the plurality of dummy PDCCH transmission. The ACK feedback for the dummy PDCCH transmissions may be multiplexed with ACK feedback to the at least one BS for physical downlink shared channel (PDSCH) transmissions. A UE may receive a configuration reserving one or more bits in a UE codebook for providing the ACK feedback. Each reserved bit may be for control resource sets associated with a transmission configuration. The UE monitors PDDCH transmissions using different transmission configurations and uses the reserved bits to transmit ACK feedback for the PDCCH transmissions.

公开(公告)号：US11190234B2

公开(公告)日：2021-11-30

申请号：US16385943

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04B1/7136 ,  H04B1/7143 ,  H04B1/7156 ,  H04L27/26

Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.

公开(公告)号：US11184923B2

公开(公告)日：2021-11-23

申请号：US16406563

申请日：2019-05-08

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Wanshi Chen ,  Jing Sun ,  Peter Gaal

IPC: H04W74/08 ,  H04W76/28 ,  H04W16/14 ,  H04W28/02 ,  H04W72/02

Abstract: Various aspects described herein relate to reducing transmission latency in unlicensed spectrum. These latency reduction techniques include enabling ultra low latency (ULL) traffic to gain fast channel access. These latency reduction techniques further include updating a size of a contention window for channel access. In addition, these latency reduction techniques include enhancing CPDCCH-based signaling to accommodate the ULL frame structure. Further, these latency reduction techniques include providing robust operation against bursty interference for ULL transmissions. Moreover, these techniques include managing DRX for ULL. Additionally, these latency reduction techniques include joint scheduling of different TTI durations. These latency reduction techniques further include updating SRS transmission opportunities. In addition, these latency reduction techniques include reducing latency associated with PRACH transmissions. Further, these latency reduction techniques include reducing ULL transmission delays by either ignoring or cancelling scheduled uplink (e.g., LTE) transmissions.

公开(公告)号：US11184888B2

公开(公告)日：2021-11-23

申请号：US16580162

申请日：2019-09-24

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：US20210360669A1

公开(公告)日：2021-11-18

申请号：US17315525

申请日：2021-05-10

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud Taherzadeh Boroujeni ,  Tao Luo ,  Peter Gaal ,  Juan Montojo ,  Jing Sun ,  Iyab Issam Sakhnini

IPC: H04W72/12 ,  H04W72/04

Abstract: Techniques for alternative semi-persistent scheduling (SPS) parameter implementation in association with preemption of use of resources corresponding to other SPS parameters are described. Wireless devices may be implicitly informed with respect to implementing alternative resources corresponding to one or more alternative SPS parameters when use of resources corresponding to first SPS parameters is preempted. A disruption indication (DI), such as used to indicate preemption of downlink transmission on downlink SPS allocated resources and/or a cancellation indication of uplink transmission on uplink SPS allocated resources, may be used to inform (e.g., implicitly) one or more wireless devices to employ alternative resources corresponding to alternative SPS parameters available to the wireless devices. Other aspects and features are also claimed and described.

公开(公告)号：US11177903B2

公开(公告)日：2021-11-16

申请号：US16168453

申请日：2018-10-23

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Yi Huang ,  Heechoon Lee

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a modulation and coding scheme (MCS) for an uplink communication of the UE; identify a set of beta values for uplink control information of the uplink communication according to a mapping between the set of beta values and the MCS, wherein the set of beta values is for determination of a number of resource elements or modulation symbols for the uplink control information; and transmit the uplink control information based at least in part on the set of beta values. Numerous other aspects are provided.

公开(公告)号：US20210352631A1

公开(公告)日：2021-11-11

申请号：US16868330

申请日：2020-05-06

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Srinivas Yerramalli ,  Wooseok Nam ,  Sungwoo Park ,  Arumugam Chendamarai Kannan

IPC: H04W72/04 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W76/11

Abstract: A base station transmits a first downlink control information (DCI) portion in a physical downlink control channel (PDCCH), wherein the first DCI portion indicates a second DCI portion. The base station jointly encodes multiple component DCIs, each of the component DCIs providing a resource allocation in combination with the first DCI portion. The apparatus transmits the second DCI portion comprising the jointly encoded multiple component DCIs in a physical downlink shared channel (PDSCH).

公开(公告)号：US20210351871A1

公开(公告)日：2021-11-11

申请号：US17381501

申请日：2021-07-21

Applicant: QUALCOMM Incorporated

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

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

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 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. 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.