公开(公告)号：WO2020055764A1

公开(公告)日：2020-03-19

申请号：PCT/US2019/050246

申请日：2019-09-09

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Chih-Hao ,  FAKOORIAN, Seyed Ali Akbar ,  YERRAMALLI, Srinivas ,  TIAN, Qingjiang ,  RADULESCU, Andrei Dragos ,  KADOUS, Tamer

IPC: H04W72/08

Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.

公开(公告)号：WO2020018671A1

公开(公告)日：2020-01-23

申请号：PCT/US2019/042212

申请日：2019-07-17

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  ZHANG, Xiaoxia ,  SUN, Jing ,  FAKOORIAN, Seyed Ali Akbar ,  LIU, Chih-Hao

IPC: H04B7/06 ,  H04B7/0417

Abstract: A method for wireless communications at a user equipment (115-b),UE, comprises: receiving a downlink transmission from a base station (105-b) including a channel state information, CSI, reporting mode (315); selecting, based at least in part on the received downlink transmission, a channel state information CSI computation mode for the wireless channel, wherein the CSI computation mode is based at least in part on an effective isotropic radiated power, EIRP, constraint (325); measuring a set of one or more CSI reference signals (330), CSI-RSs, from the base station to obtain a CSI measurement (335); and transmitting (345) a CSI report to the base station based at least in part on the selected CSI computation mode (340) and the CSI measurement (335).

公开(公告)号：WO2019245689A1

公开(公告)日：2019-12-26

申请号：PCT/US2019/033223

申请日：2019-05-21

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  ZHANG, Xiaoxia ,  FAKOORIAN, Seyed Ali Akbar

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described that provide for configuring a user equipment (UE) with a number of uplink transmission configuration states that may be mapped to corresponding uplink transmission parameters. The uplink transmission parameters may be associated with one or more of a directional uplink transmission beam, a set of base stations that are to receive an uplink transmission for joint processing, uplink reference signal transmissions, or combinations thereof. An indication of a first uplink transmission configuration state may be provided to the UE, and the UE may transmit the uplink transmission based at least in part on a first set of uplink transmission parameters that are associated with the first uplink transmission configuration state.

公开(公告)号：WO2019232072A1

公开(公告)日：2019-12-05

申请号：PCT/US2019/034426

申请日：2019-05-29

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  FAKOORIAN, Seyed Ali Akbar ,  ZHANG, Xiaoxia ,  SUN, Jing

IPC: H04W74/08 ,  H04W72/04

Abstract: A method of wireless communication includes receiving, by a user equipment (UE) from a base station, downlink transmissions, and performing, by the UE, a listen before talk (LBT) procedure in an LBT occasion provisioned, by the base station, for the UE immediately prior to an uplink transmission that includes an acknowledgement of a downlink transmission. The method also includes transmitting, by the UE to the base station, the uplink transmission based on results of the LBT procedure. In another aspect, a method of wireless communication includes provisioning, by a base station for all served UEs, an LBT occasion immediately prior to an uplink transmission by the UEs. The uplink transmission includes an acknowledgement of a downlink transmission. The method additionally includes transmitting, by the base station to the UEs, downlink transmissions, and receiving, by the base station, the uplink transmission.

公开(公告)号：WO2019209599A1

公开(公告)日：2019-10-31

申请号：PCT/US2019/027969

申请日：2019-04-17

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Jing ,  ZHANG, Xiaoxia ,  YERRAMALLI, Srinivas ,  WEI, Yongbin

IPC: H04L5/00 ,  H04W24/10 ,  H04W72/00 ,  H04B17/30 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit a first downlink control information block over a group physical downlink control channel (PDCCH), wherein the first downlink control information block identifies a plurality of user equipment (UEs) for performing aperiodic channel state information (CSI) measurements and an indication of CSI reference signal resources for a CSI reference signal. The base station may transmit the CSI reference signal on the indicated CSI reference signal resources. The UE may perform, in response to receiving the group PDCCH, an aperiodic CSI measurement of the CSI reference signal on the indicated CSI reference signal resources.

公开(公告)号：WO2019209590A1

公开(公告)日：2019-10-31

申请号：PCT/US2019/027921

申请日：2019-04-17

Applicant: QUALCOMM INCORPORATED

Inventor： DAMNJANOVIC, Aleksandar ,  YERRAMALLI, Srinivas ,  ZHANG, Xiaoxia ,  KADOUS, Tamer ,  WEI, Yongbin ,  SUN, Jing ,  RADULESCU, Andrei Dragos

IPC: H04W74/08

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：WO2019165239A1

公开(公告)日：2019-08-29

申请号：PCT/US2019/019193

申请日：2019-02-22

Applicant: QUALCOMM INCORPORATED

Inventor： JOHN WILSON, Makesh Pravin ,  YERRAMALLI, Srinivas ,  LUO, Tao ,  NAGARAJA, Sumeeth ,  AKKARAKARAN, Sony

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described techniques provide for the identification of a sequence of beamforming parameters that are used for communications between a user equipment (UE) and a base station using a sequence of transmission beams. A UE may measure received reference signals that are transmitted in a series of downlink transmission beams from a base station, and report measurement parameters associated with the downlink transmission beams to the base station as part of a beam tracking and beam refinement procedure. The base station may provide transmission configuration indicator (TCI) states that are associated with each transmission beam. The TCI states may be recorded over a course of a periodic movement of the UE, and may be used deterministically to identify beamforming parameters for transmission and reception of a subsequent series of downlink transmission beams when the UE makes a subsequent same periodic movement.

公开(公告)号：WO2019165176A1

公开(公告)日：2019-08-29

申请号：PCT/US2019/019099

申请日：2019-02-22

Applicant: QUALCOMM INCORPORATED

Inventor： FAKOORIAN, Seyed Ali Akbar ,  YERRAMALLI, Srinivas ,  ZHANG, Xiaoxia ,  SUN, Jing ,  KADOUS, Tamer

IPC: H04W74/08

Abstract: Techniques and apparatus for enhancing uplink grant-free transmissions and/or downlink semi-persistent scheduling (SPS) transmissions for uplink ultra-reliable low latency communications (URLLC) are described. One technique includes receiving a first configuration for a first grant-free communication and a second configuration for at least one second grant-free communication. Grant-free communications are performed based on at least one of the first configuration or the second configuration

公开(公告)号：WO2019152320A1

公开(公告)日：2019-08-08

申请号：PCT/US2019/015438

申请日：2019-01-28

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Chih-Hao ,  YERRAMALLI, Srinivas ,  KADOUS, Tamer Adel

IPC: H04W4/70 ,  H04B1/713 ,  H04W16/14

Abstract: Aspects of the disclosure relate to a dynamic, configurable time division duplex (TDD) frame structure for hopping superframes utilized in narrowband Internet of Things (NB-IOT) wireless communication systems. The configurable frame structure includes an anchor segment residing on a plurality of anchor hopping frequencies and a data segment residing on one of a plurality of non-anchor hopping frequencies. The data segment includes a downlink portion, an uplink portion, and a configurable portion between the downlink control portion and the uplink control portion that may be configured to include at least one of downlink information or uplink information.

公开(公告)号：WO2019135955A1

公开(公告)日：2019-07-11

申请号：PCT/US2018/067249

申请日：2018-12-21

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Xiaoxia ,  MALIK, Rahul ,  YERRAMALLI, Srinivas

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04B7/0617 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0094 ,  H04W16/14 ,  H04W48/10 ,  H04W48/16 ,  H04W88/02

Abstract: A joint low-band and high-band operation is disclosed for use in new radio (NR) shared spectrum (NR-SS) networks. In such networks, uplink and downlink communications may occur over separate bands, selected based on performance or quality characteristics.