公开(公告)号：US10172071B2

公开(公告)日：2019-01-01

申请号：US15789633

申请日：2017-10-20

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Bilal Sadiq ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Junyi Li

IPC: H04W48/12 ,  H04W76/10 ,  H04B7/06 ,  H04L27/26 ,  H04L5/00 ,  H04W56/00 ,  H04W74/00 ,  H04W36/00 ,  H04W76/15 ,  H04W72/04 ,  H04W52/04 ,  H04W16/28

Abstract: Certain aspects of the present disclosure provide techniques for assisted power control for an uplink signal transmitted during a RACH procedure. A UE may determine a transmit power for transmitting a message during a RACH procedure with a secondary BS, based at least in part, on communication between the UE and a primary BS. The UE may transmit the message to the second BS during the RACH procedure based, at least in part, on the determined transmit power.

公开(公告)号：US20180376429A1

公开(公告)日：2018-12-27

申请号：US16015021

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Bilal Sadiq ,  Navid Abedini

IPC: H04W52/14 ,  H04W16/28 ,  H04W74/08 ,  H04W76/27 ,  H04W72/04

CPC classification number: H04W52/146 ,  H04B7/0617 ,  H04W16/28 ,  H04W52/16 ,  H04W52/242 ,  H04W52/325 ,  H04W52/42 ,  H04W72/042 ,  H04W72/0473 ,  H04W74/008 ,  H04W74/0833 ,  H04W76/27

Abstract: A transmit beamforming gain and a receive beamforming gain may be used when adjusting an uplink transmit power. For example, a user equipment (UE) may receive downlink communications from a base station on a receive beam having a beamforming gain that is different from a beamforming gain for an uplink transmit beam. The UE may adjust an uplink transmit power (e.g., for transmitting a random access channel (RACH)) based on a difference in the beamforming gains. For example, a parameter representing the difference in the beamforming gains, in addition to a maximum allowed transmit power, a target preamble received power, and an estimated path loss, may be used when determining an adjusted uplink transmit power for a RACH transmission. The adjustment may result in a higher or lower transmit power depending on the difference in the receive beamforming gain and the transmit beamforming gain.

公开(公告)号：US20180343628A1

公开(公告)日：2018-11-29

申请号：US16035314

申请日：2018-07-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described that provide for synchronization signal (SS) blocks in which synchronization signals and broadcast channel transmissions may be transmitted. Broadcast channel transmissions may be demodulated using SS transmissions, reference signal transmissions, or combinations thereof. Broadcast channel transmissions may be transmitted in a subset of SS block time resources, and synchronization signals may be transmitted in another subset of SS block time resources. Reference signals may be transmitted using tones within the broadcast channel time resources, and may be transmitted at a higher density for portions of the broadcast channel transmission bandwidth that are outside of the SS transmission bandwidth. Waveforms for reference signal transmissions, and information provided by reference signal transmissions may be provided.

公开(公告)号：US20180331801A1

公开(公告)日：2018-11-15

申请号：US15951974

申请日：2018-04-12

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran

IPC: H04L5/00 ,  H04W74/08 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0053 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communication are described. A base station may select a waveform configuration and a resource for a user equipment (UE) to use to transmit a random access channel (RACH) message 3 (msg3). The base station may transmit a value indicative of the waveform configuration to the UE, wherein the waveform configuration is further indicative of the selected resource. The UE may receive the value indication and identify the waveform configuration. Based on the waveform configuration, the UE may identify the resource to use to transmit the RACH msg3. The UE may transmit the RACH msg3 using the resource and according to the waveform configuration.

公开(公告)号：US10116483B2

公开(公告)日：2018-10-30

申请号：US15370266

申请日：2016-12-06

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Juergen Cezanne ,  Krishna Kiran Mukkavilli ,  Sundar Subramanian ,  Junyi Li

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: DM-RS symbols may be inserted in the beginning of a subframe, or in two parts of the subframe. In one aspect, a method, a computer-readable medium, and an apparatus for dynamically conveying DM-RS information are provided. The apparatus may be a base station. The apparatus may determine the number of DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols. The apparatus may transmit the number of the DM-RS symbols and/or the locations within the subframe for transmission of the DM-RS symbols to a UE. In another aspect, a UE may receive the number of DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols from a base station. The UE may decode the DM-RS symbols from the subframe based on the number of the DM-RS symbols and/or the locations within a subframe for transmission of the DM-RS symbols.

公开(公告)号：US10097255B2

公开(公告)日：2018-10-09

申请号：US14959671

申请日：2015-12-04

Applicant: QUALCOMM Incorporated

Inventor： Juergen Cezanne ,  Muhammad Nazmul Islam ,  Krishna Kiran Mukkavilli ,  Sundar Subramanian ,  Junyi Li

IPC: H04W4/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04J13/00 ,  H04L27/26

Abstract: Described herein are methods, systems, and apparatus for jointly estimating channel and phase noise in a control symbol. In one example, a method for wireless communication is described that includes inserting a control tone at a first periodicity in a first subcarrier of a control symbol and inserting a pilot tone at a second periodicity in a second subcarrier of the control symbol, the pilot tone being offset from the control tone in the control symbol. The method also includes transmitting the control symbol. In another example, a method for wireless communication is described that includes receiving a control symbol comprising a control tone at a first periodicity, and a pilot tone at a second periodicity, the pilot tone being offset from the control tone in the control symbol. The method also includes performing a phase noise estimation and a channel estimation from the pilot tone.

公开(公告)号：US20180263064A1

公开(公告)日：2018-09-13

申请号：US15914787

申请日：2018-03-07

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran ,  Hung Ly ,  Bilal Sadiq

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W74/0891 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04W56/0015 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/1205 ,  H04W72/1289 ,  H04W74/0833

Abstract: Methods, systems, and devices for communication timing (e.g., random access channel (RACH) timing) in a wireless communication are described. A base station and a user equipment (UE) may perform a communication procedure (e.g., to establish a communication link between the base station the UE). The communication timing associated with the communication procedure may depend on the numerology used for the communication procedure and may be conveyed by the base station to the UE in a control message or via system information. In some cases, the numerology may indicate the communication timing.

公开(公告)号：US20180263063A1

公开(公告)日：2018-09-13

申请号：US15914759

申请日：2018-03-07

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran ,  Hung Ly ,  Bilal Sadiq

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W74/0891 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04W56/0015 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/1205 ,  H04W72/1289 ,  H04W74/0833

Abstract: Methods, systems, and devices for random access channel (RACH) timing in a wireless communication are described. A base station and a user equipment (UE) may perform a RACH procedure to establish a communication link between the base station the UE. The RACH timing associated with the RACH procedure may depend on the numerology used for the RACH procedure and may be conveyed by the base station to the UE in a control message or via system information. In some cases, the numerology may indicate the RACH timing, which may be used to determine a number of symbols or absolute time to be used for portions of the RACH procedure.

公开(公告)号：US10069555B2

公开(公告)日：2018-09-04

申请号：US15474802

申请日：2017-03-30

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04L5/00

Abstract: A first apparatus may communicate with a user equipment through a first active beam. The first apparatus may determine that beam tracking is to be performed with the UE, including identifying a new beam for communication between the UE and the apparatus. The first apparatus may perform beam tracking with the UE based on the determination that beam tracking is to be performed. The first apparatus may communicate with the UE through a second active beam based on the beam tracking.

公开(公告)号：US20180199309A1

公开(公告)日：2018-07-12

申请号：US15708548

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Karl Georg Hampel

IPC: H04W68/02 ,  H04W56/00 ,  H04L5/00

Abstract: A method for wireless communication at a user equipment (UE) includes receiving, from a base station, an indication of uplink transmission resources allocated for a paging response to a paging indication, receiving the paging indication from the base station, and transmitting, to the base station, the paging response to the received paging indication. The paging response is transmitted on at least one of the uplink transmission resources allocated for the paging response. A method for wireless communication at a base station includes identifying uplink transmission resources for paging responses, transmitting an indication of the uplink transmission resources allocated for paging responses, transmitting a paging indication to at least one UE, and receiving a paging response from one or more UEs using a receive beam sweep. The paging response is received on an associated beam on at least one of the uplink transmission resources allocated for paging responses.