公开(公告)号：US10291378B1

公开(公告)日：2019-05-14

申请号：US16119904

申请日：2018-08-31

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Makesh Pravin John Wilson ,  Kiran Venugopal ,  Muhammad Nazmul Islam ,  Gabi Sarkis ,  Joseph Binamira Soriaga ,  Tao Luo

IPC: H04L12/28 ,  H04L5/00 ,  H04W72/04 ,  H04W68/02 ,  H04J1/16 ,  H04L1/00 ,  H04W74/08

Abstract: Wireless devices may employ techniques for indicating alternative modulation coding schemes (MCSs) (e.g., MCS values or MCS indices not associated with a default list or default MCS table). That is, communications (e.g., such as physical downlink control channel (PDCCH) transmissions carrying downlink control information (DCI), physical downlink shared channel (PDSCH) transmissions carrying uplink grants, etc.) may include information (e.g., in MCS fields and reserved fields) that indicate alternative MCSs for subsequent communications. For example, random access radio network temporary identifier (RA-RNTI) scrambled DCI, random access response (RAR) messages, etc., may indicate an alternative MCS for subsequent messages in a random access procedure (e.g., for a RAR, an RRC connection request, etc.). The alternative MCS may be conveyed by indicating information such as MCS scaling factors, alternative MCS table IDs, MCS indices associated with the alternative MCS table, or some combination thereof.

公开(公告)号：US20190082438A1

公开(公告)日：2019-03-14

申请号：US16128355

申请日：2018-09-11

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Xiao Feng Wang ,  Sony Akkarakaran ,  Sumeeth Nagaraja ,  Yan Zhou ,  Shengbo Chen ,  Juan Montojo ,  Wooseok Nam

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0408 ,  H04W72/08 ,  H04W56/00

Abstract: Techniques are described herein for beam pair link procedures used in dual connectivity operations. A master base station may be configured to determine a timing window for a user equipment (UE) to monitor a downlink channel associated with a secondary base station. In some cases, the master base station may determine the timing window during a dual connectivity procedure or during a carrier aggregation procedure. The UE may monitor the downlink channel during the timing window and establish a beam pair link with the secondary base station based on the monitoring.

公开(公告)号：US20180343681A1

公开(公告)日：2018-11-29

申请号：US16052331

申请日：2018-08-01

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Aitzaz Ahmad ,  Kaushik Chakraborty

IPC: H04W74/08 ,  H04B7/00 ,  H04W16/28 ,  H04W72/04

Abstract: Wireless communications systems and methods related to performing random access procedures. A base station (BS) receives, from a user equipment (UE), a plurality of random access preambles from a plurality of beam directions, wherein each of the plurality of random access preambles is received from a different beam direction, and wherein the plurality of random access preambles are associated with multiple random access opportunities of a random access attempt. The BS sends, in response to the plurality of random access preambles, a plurality of random access response (RAR) messages in the plurality of beam directions.

公开(公告)号：US20180337755A1

公开(公告)日：2018-11-22

申请号：US15968569

申请日：2018-05-01

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Hung Ly ,  Heechoon Lee ,  Peter Gaal ,  Muhammad Nazmul Islam ,  Wanshi Chen ,  Bilal Sadiq

IPC: H04L5/00 ,  H04J11/00

CPC classification number: H04L5/0048 ,  H04B7/0617 ,  H04J11/0073 ,  H04J11/0076 ,  H04L27/2675

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first synchronization signal (SS) block that does not include remaining minimum system information (RMSI). The first SS block may indicate an offset for obtaining a second SS block that includes RMSI. The UE may determine a location of the second SS block based at least in part on the offset. Numerous other aspects are provided.

公开(公告)号：US20180302128A1

公开(公告)日：2018-10-18

申请号：US15951901

申请日：2018-04-12

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Makesh Pravin John Wilson ,  Kaushik Chakraborty ,  Wooseok Nam ,  Shengbo Chen

IPC: H04B7/04 ,  H04L5/00 ,  H04L1/16

Abstract: A user equipment (UE) may be configured to communicate a number of transmissions that may each have separate feedback processes. A feedback configuration for providing feedback for such separate feedback processes may be determined based on semi-static signaling and dynamic signaling. In some cases, semi-static signaling, such as radio resource control (RRC) signaling and dynamic signaling, such as downlink control information (DCI), may together provide a feedback configuration for a particular transmission. The semi-static signaling may provide a number of bits of feedback information, an interpretation of the bits of feedback information, or combinations thereof, and dynamic signaling may indicate that one or more of the bits are to have one of a number of available interpretations, may indicate that one or more additional bits are to be included with feedback, of combinations thereof. Feedback techniques as discussed herein may be used to provide feedback for uplink or downlink transmissions.

公开(公告)号：US20180279287A1

公开(公告)日：2018-09-27

申请号：US15905897

申请日：2018-02-27

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Xiao Feng Wang ,  Sumeeth Nagaraja

IPC: H04W72/04 ,  H04W16/28 ,  H04L5/00 ,  H04B7/06

Abstract: Certain aspects of the present disclosure provide techniques for switching control beams in multi-link systems using new radio (NR) technology multiple-input multiple-output (MIMO) techniques. A user equipment (UE) may obtain a configuration from a base station (BS) comprising at least one first pattern of beams to monitor when performing a beam recovery procedure, communicate using beamforming, with the BS, via an active transmit and receive beam pair, determine a beam failure of the active transmit and receive beam pair, and monitor the beams according to the first pattern in response to the beam failure.

公开(公告)号：US20180278467A1

公开(公告)日：2018-09-27

申请号：US15887656

申请日：2018-02-02

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Xiao feng Wang ,  Sumeeth Nagaraja

IPC: H04L12/24 ,  H04W72/04 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communication are described that support beam failure identification and recovery is systems that may use beamforming for uplink and downlink transmission beams. A first beam and a second beam may be configured, and the second beam may be used to identify a failure of the first beam. Upon detection of a beam failure, a beam recovery procedure may be initiated in which an indication of a beam failure may be transmitted using scheduling request (SR) or uplink control channel resource. A base station in some examples may transmit an indication that one of a set of beams may have failed, and a UE may provide an indication of which beam of the set of beams failed, such as based on a received reference signal associated with one of the beams.

公开(公告)号：US20180270689A1

公开(公告)日：2018-09-20

申请号：US15914733

申请日：2018-03-07

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson ,  Ajay Gupta ,  Arumugam Chendamarai Kannan

IPC: H04W24/10 ,  H04W52/02 ,  H04B7/06

Abstract: A user equipment (UE) may operate in a reception mode that includes a set of sleep cycles and a set of wake cycles. During a sleep cycle of the UE, a signal quality of an active beam carrying a control channel or a data channel may degrade. This may result in the UE failing to decode the control channel or the data channel during a subsequent wake cycle. In some aspects, the UE may perform a measurement of one or more beams, of a set of beams, prior to the wake cycle. In some aspects, the UE may identify a beam, of the one or more beams, to use for communication with a base station (BS). In this way, the UE reduces a delay in data transfer associated with performing beam recovery after failing to decode the control channel or data channel during the wake cycle.

公开(公告)号：US20180269956A1

公开(公告)日：2018-09-20

申请号：US15875745

申请日：2018-01-19

Applicant: QUALCOMM Incorporated

Inventor： Sony AKKARAKARAN ,  Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson ,  Ajay Gupta ,  Arumugam Chendamarai Kannan

IPC: H04B7/08 ,  H04W24/10 ,  H04B7/06

CPC classification number: H04B7/088 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/0695 ,  H04B7/2684 ,  H04W24/10 ,  H04W52/0245 ,  H04W52/0258 ,  H04W52/028 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/1242 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/20 ,  Y02D70/21 ,  Y02D70/22 ,  Y02D70/24 ,  Y02D70/26 ,  Y02D70/444 ,  Y02D70/449

Abstract: A user equipment (UE) may operate in a reception mode that includes a set of sleep cycles and a set of wake cycles. During a sleep cycle of the UE, a signal quality of an active beam carrying a control channel or a data channel may degrade. This may result in the UE failing to decode the control channel or the data channel during a subsequent wake cycle. In some aspects, the UE may perform a measurement of one or more beams, of a set of beams, prior to the wake cycle. In some aspects, the UE may identify a beam, of the one or more beams, to use for communication with a base station (BS). In this way, the UE reduces a delay in data transfer associated with performing beam recovery after failing to decode the control channel or data channel during the wake cycle.

公开(公告)号：US20180262242A1

公开(公告)日：2018-09-13

申请号：US15845585

申请日：2017-12-18

Applicant: Qualcomm Incorporated

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Xiao feng Wang ,  Shengbo Chen

IPC: H04B7/0456 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0665 ,  H04B7/0695 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/1469 ,  H04L5/16 ,  H04W24/10 ,  H04W72/042

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of whether to use uplink reference signals or downlink reference signals for uplink precoder determination. The UE may selectively transmit a plurality of uplink reference signals or one or more measurement reports based at least in part on the indication, wherein the one or more measurement reports are determined based at least in part on measuring a plurality of downlink reference signals. The UE may receive an indication of a precoder, of a plurality of precoders, to be used to precode an uplink communication, wherein the precoder is identified based at least in part on the plurality of uplink reference signals or the one or more measurement reports. The UE may precode the uplink communication using the precoder. Numerous other aspects are provided.