公开(公告)号：US20190239187A1

公开(公告)日：2019-08-01

申请号：US16164370

申请日：2018-10-18

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Makesh Pravin John Wilson

IPC: H04W68/02 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W52/54

CPC classification number: H04W68/02 ,  H04L1/1812 ,  H04L5/0048 ,  H04W52/54 ,  H04W72/042

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may transmit downlink control information (DCI) messages to a user equipment (UE). A DCI message may be transmitted using a particular DCI format based on the type of control information included in the DCI message. In some cases, different types of control information may be transmitted using the same DCI format. In such cases, one or more bit fields in a DCI format may be useful to a UE for one type of control information but may not be useful to a UE for another type of control information. As described herein, in order to limit the overhead associated with control information transmissions, a base station may support techniques for utilizing these bit fields in a DCI format to transmit information corresponding to the type of control information being transmitted.

公开(公告)号：US10367616B2

公开(公告)日：2019-07-30

申请号：US15357812

申请日：2016-11-21

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tao Luo ,  Juergen Cezanne ,  Bilal Sadiq ,  Junyi Li

IPC: H04L5/00 ,  H04W52/36 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.

公开(公告)号：US10356823B2

公开(公告)日：2019-07-16

申请号：US15357951

申请日：2016-11-21

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Juergen Cezanne ,  Sundar Subramanian ,  Bilal Sadiq ,  Junyi Li ,  Ashwin Sampath

IPC: H04L27/26 ,  H04W72/04 ,  H04W74/08

Abstract: A user equipment (UE) may transmit a random access message to a wireless node using multiple symbols. The random access message may include repetitions of a random access sequence weighted by a spreading code. For example, a random access sequence may be weighted using different elements of the spreading code, where a first repetition may be weighted with a first element and a second repetition may be weighted using a second element. The weighted random access signals may be spread over multiple symbols and transmitted to the wireless node as the random access message. In some cases, a spreading code may include values of one and negative one, may be based on rows of a Hadamard matrix, or may correspond to a number of symbols used to transmit the random access message.

公开(公告)号：US10341946B2

公开(公告)日：2019-07-02

申请号：US15967073

申请日：2018-04-30

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Tao Luo ,  Bilal Sadiq ,  Hung Ly ,  Heechoon Lee ,  Haitong Sun

IPC: H04W4/00 ,  H04W48/16 ,  H04W56/00 ,  H04L12/58 ,  H04W4/12 ,  G06Q50/00 ,  H04W8/24 ,  H04M1/725

Abstract: In order to improve cell detection in NR, a user equipment apparatus performs a PSS search on a first frequency raster from a group of frequency rasters. When the UE detects a PSS on the first frequency raster corresponding to a PSS hypothesis, the UE searches for an SS on a second frequency raster based at least on part on the detected PSS hypothesis on the first frequency raster. The UE may search for a plurality of hypotheses of the SS corresponding to the detected PSS hypothesis on the first frequency raster and the second frequency raster. The second frequency raster may be selected from the group of frequency rasters based at least in part on the detected PSS hypothesis or the first frequency raster on which the PSS was detected.

公开(公告)号：US20190191399A1

公开(公告)日：2019-06-20

申请号：US16193736

申请日：2018-11-16

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Bilal Sadiq ,  Peter Pui Lok Ang ,  Sundar Subramanian ,  Junyi Li ,  Sony Akkarakaran

IPC: H04W56/00 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W56/005 ,  H04W56/009 ,  H04W72/042 ,  H04W72/046 ,  H04W72/1268

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for adjusting timing advance command parameters for specific beam pair links (BPLs) in a wireless communications system. In some cases, a base station may determine that transmission timing at a UE may be misaligned. The may send a timing advance (TA) command for the BPL. A UE may utilize more than one BPL, and may switch communications from a first BPL to second BPL. The second BPL may have a different timing misalignment than the first BPL, and the TA command sent by the base station may be insufficient to correct the timing misalignment of the second BPL. The base station may adjust the TA command parameters (e.g., TA command size or TA command granularity) so that the timing misalignment of the second BPL may be corrected.

公开(公告)号：US20190141692A1

公开(公告)日：2019-05-09

申请号：US16153509

申请日：2018-10-05

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Muhammad Nazmul Islam ,  Jianghong Luo ,  Ashwin Sampath ,  Junyi Li ,  Juergen Cezanne ,  Bilal Sadiq ,  Navid Abedini

IPC: H04W72/04 ,  H04L5/00

Abstract: When a first node is subject to a maximum permissible exposure (MPE) condition, it may be beneficial for the first node to signal, to a second node, an uplink beam to be used for communications and/or one or more properties of the uplink beam. For example, the first node may signal a downlink beam, from a first reciprocal beam pair, and an uplink beam, from a second reciprocal beam pair, to be used for communications, and/or may signal one or more properties of the uplink beam and/or the downlink beam. Additionally, or alternatively, the second node may transmit, to the first node, a signaling state (e.g., a transmission configuration indication (TCI) state) that indicates properties to be used to configure an uplink beam and/or a downlink beam. In this way, the first node and the second node may configure beams in a manner that accounts for MPE limitations.

公开(公告)号：US20190140813A1

公开(公告)日：2019-05-09

申请号：US16184924

申请日：2018-11-08

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Sundar Subramanian ,  Junyi Li ,  Durga Prasad Malladi ,  Karl Georg Hampel ,  Muhammad Nazmul Islam

IPC: H04L5/14 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/0408 ,  H04L5/16

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may identify a set of power configurations for a plurality of communications with at least one target device. The set of power configurations may be based at least in part on a type of signal, a type of channel, a parameter of the wireless device, a parameter of the target device, or a combination thereof. The wireless device may then determine a duplexing mode for the plurality of communications based at least in part on the set of power configurations. The duplexing mode may be, for example, a full duplex mode or a half-duplex mode. The wireless device may then transmit the plurality of communications to and/or receive the plurality of communications from the at least one target device according to the set of power configurations and the selected duplexing mode.

公开(公告)号：US10237857B2

公开(公告)日：2019-03-19

申请号：US15468825

申请日：2017-03-24

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Bilal Sadiq ,  Juergen Cezanne ,  Sundar Subramanian ,  Junyi Li

IPC: H04W72/00 ,  H04W72/04 ,  H04B7/0408 ,  H04B7/0417 ,  H04L5/00 ,  H04L25/02 ,  H04W72/02 ,  H04B7/06 ,  H04B17/336 ,  H04W16/28 ,  H04B7/08 ,  H04W74/08

Abstract: When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals. The apparatus transmits, to the base station, a feedback signal including information about one or more beams selected from the plurality of beams, the feedback signal further including one or more candidate uplink precoders.

公开(公告)号：US20190075571A1

公开(公告)日：2019-03-07

申请号：US16119919

申请日：2018-08-31

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Jianghong Luo ,  Muhammad Nazmul Islam ,  Sundar Subramanian

IPC: H04W72/10 ,  H04W72/08 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A central access node (CAN) may manage and schedule resources for a wireless mesh network. The CAN may transmit a first message to a relay access node (AN) to expedite transmission of a priority communication in the wireless mesh network. The first message may provide configuration information for modifying a preconfigured schedule to expedite the transmission of the priority communication. For example, the first message may provide configuration information to modify a preconfigured schedule to allow a first network node to transmit the priority communication to a second network node during a reserved time period. The relay AN may generate a second message regarding the modified schedule and transmit the second message to the second network node.

公开(公告)号：US20190059129A1

公开(公告)日：2019-02-21

申请号：US16104656

申请日：2018-08-17

Applicant: QUALCOMM Incorporated

Inventor： Jianghong Luo ,  Muhammad Nazmul Islam ,  Sumeeth Nagaraja ,  Ashwin Sampath ,  Sundar Subramanian

IPC: H04W76/28 ,  H04W72/04 ,  H04W56/00 ,  H04W52/02 ,  H04W72/14

CPC classification number: H04W76/28 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0695 ,  H04B7/088 ,  H04W16/28 ,  H04W52/0216 ,  H04W52/0229 ,  H04W56/001 ,  H04W72/042 ,  H04W72/046 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, to a user equipment (UE) operating in a discontinuous reception mode, a wakeup signal indicating whether data is available to be transmitted to the UE, the wakeup signal transmitted using a first set of transmit beams, which may be selected from a periodic beam management procedure, in accordance with a beam sweeping configuration. The base station may receive, from the UE and based at least in part on the wakeup signal, a response signal. The base station may perform, based at least in part on the response signal, further beam update procedures to identify a second set of transmit beams for future transmissions of the wakeup signal and/or for transmission of physical downlink control channel (PDCCH) to the UE.