公开(公告)号：US20190394799A1

公开(公告)日：2019-12-26

申请号：US16409400

申请日：2019-05-10

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Navid ABEDINI ,  Junyi LI ,  Karl Georg HAMPEL ,  Jianghong LUO

IPC: H04W74/08 ,  H04W74/02 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12

Abstract: Certain aspects of the present disclosure provide techniques for avoiding conflicts of resources assigned to one or more signals with resources assigned to Random Access Channel (RACH) in an Integrated Access and Backhaul (IAB) network. Configurations for first and second sets of signals are obtained for a first and second base station (BS) respectively. Based on the obtained configurations, a RACH configuration is determined for the first BS for performing a RACH procedure with the second BS over a wireless backhaul link, wherein one or more Physical RACH (PRACH) occasions according to the determined RACH configuration do not conflict with resources used for at least one of the first or the second set of signals. The determined RACH configuration is communicated to the second BS, wherein the second BS transmits a RACH signal to the first BS based on the determined RACH configuration.

公开(公告)号：US20190306846A1

公开(公告)日：2019-10-03

申请号：US16283658

申请日：2019-02-22

Applicant: QUALCOMM Incorporated

Inventor： Jianghong LUO ,  Navid ABEDINI ,  Bilal SADIQ ,  Junyi LI ,  Muhammad Nazmul ISLAM ,  Karl Georg HAMPEL ,  Hong CHENG

IPC: H04W72/04 ,  H04W72/14 ,  H04L1/18

Abstract: Aspects of the disclosure relate to devices for coordinating resource usage. A scheduled device receives a downlink control information (DCI) grant from a scheduling device, the DCI grant identifying scheduled resources for communicating data. The scheduled device decides whether the DCI grant is acceptable for communicating the data and sends an acknowledgement to the scheduling device based on the decision and information associated with the DCI grant. The scheduled device communicates the data via the scheduled resources when the DCI grant is decided to be acceptable. A scheduling device transmits the DCI grant to the scheduled device and receives the acknowledgement from the scheduled device based on the information associated with the DCI grant. The acknowledgement indicates whether the DCI grant is acceptable for communicating the data. The scheduling device communicates the data via scheduled resources identified in the DCI grant when the DCI grant is indicated to be acceptable.

公开(公告)号：US20190159258A1

公开(公告)日：2019-05-23

申请号：US16160441

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Navid ABEDINI ,  Juergen CEZANNE ,  Bilal SADIQ ,  Sundar SUBRAMANIAN ,  Sumeeth NAGARAJA

IPC: H04W74/08 ,  H04L5/00 ,  H04W56/00

Abstract: A node for wireless communication identifies a number of actually transmitted reference signals. The node identifies a number of available PRACH time-frequency resources and preamble indices in a time period. The node identifies a number of configured PRACH time-frequency resources or PRACH preamble indices per reference signal. The node determines that the available number of PRACH time-frequency resources or PRACH preamble indices within the time period is not an integer multiple of the product of the number of actually transmitted reference signals and the number of configured PRACH time-frequency resources or PRACH preamble indices per reference signal. The node maps the actually transmitted reference signals to the available PRACH time-frequency resources and preamble indices based on the identified information and determination.

公开(公告)号：US20190158319A1

公开(公告)日：2019-05-23

申请号：US16192524

申请日：2018-11-15

Applicant: QUALCOMM Incorporated

Inventor： Juergen CEZANNE ,  Ruhua HE ,  Sundar SUBRAMANIAN ,  Tao LUO ,  Muhammad Nazmul ISLAM ,  Junyi LI ,  Raghu Narayan CHALLA

IPC: H04L25/02 ,  H04L5/00 ,  H04B17/309 ,  H04B17/382 ,  H04B17/27 ,  H04B7/06 ,  H04L1/00

Abstract: Aspects of the disclosure relate to a method of operating a scheduled entity for wireless communication with a network. In some aspects, the scheduled entity transmits a message that requests a scheduling entity to transmit at least one reference signal. The scheduled entity obtains channel state information based on the at least one reference signal. The scheduled entity transmits a report that includes the channel state information. In other aspects, the scheduled entity transmits a message that requests a scheduling entity to schedule a reference signal transmission for the scheduled entity. The scheduled entity obtains an assignment of resources for transmission of the reference signal in response to the message. The scheduled entity transmits the reference signal based on the assignment of resources. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20190116613A1

公开(公告)日：2019-04-18

申请号：US16210819

申请日：2018-12-05

Applicant: QUALCOMM Incorporated

Inventor： Navid ABEDINI ,  Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Karl Georg HAMPEL ,  Juergen CEZANNE ,  Junyi LI ,  Jianghong LUO

IPC: H04W74/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine a transmission configuration for a first random access message based at least in part on one or more parameters associated with a target base station for initiating a backhaul connection. The transmission configuration may include information associated with a physical random access channel (PRACH) resource associated with transmitting the first random access message. The PRACH resource differs from a PRACH resource associated with a transmission of a random access message by a user equipment. The base station may transmit the first random access message using the transmission configuration. Numerous other aspects are provided.

公开(公告)号：US20190110313A1

公开(公告)日：2019-04-11

申请号：US16147520

申请日：2018-09-28

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul ISLAM ,  Bilal SADIQ ,  Navid ABEDINI

IPC: H04W74/00 ,  H04W74/08 ,  H04L27/26 ,  H04L1/00

Abstract: To synchronize an apparatus during wireless communication, an apparatus may transmit a Random Access Channel (RACH) preamble sequence to a base station. However, care must be taken to prevent the RACH preamble sequence from causing inadequate levels of interference in other uplink resources. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be configured to determine, based on a RACH subcarrier spacing and a data tone subcarrier spacing, a number of RACH tones allocated for a transmission of a RACH preamble sequence. In this manner, the apparatus may ensure that adequate uplink resources are allocated to prevent interference.

公开(公告)号：US20190090143A1

公开(公告)日：2019-03-21

申请号：US16056582

申请日：2018-08-07

Applicant: QUALCOMM INCORPORATED

Inventor： Jianghong LUO ,  Navid ABEDINI ,  Sundar SUBRAMANIAN ,  Junyi LI ,  Bilal SADIQ ,  Muhammad Nazmul ISLAM

IPC: H04W24/04 ,  H04W16/28 ,  H04W76/19 ,  H04B7/06

Abstract: A method for communication includes determining whether any of a plurality of communication control beams have failed, identifying at least one active communication control beam in the plurality of communication control beams, and communicating a partial beam pair link (BPL) loss communication on the at least one active communication control beam.

公开(公告)号：US20190058538A1

公开(公告)日：2019-02-21

申请号：US16007704

申请日：2018-06-13

Applicant: QUALCOMM Incorporated

Inventor： Haitong SUN ,  Hung LY ,  Tingfang JI ,  Peter GAAL ,  Alexei Yurievitch GOROKHOV ,  Tao LUO ,  Muhammad Nazmul ISLAM

IPC: H04J1/06 ,  H04W74/08 ,  H04B7/0413

Abstract: Aspects of the present disclosure relate to techniques for transmitting and processing synchronization signals (SS) for different purposes. In some cases, transmitting multiple SS blocks simultaneously using frequency division multiplexing (FDM), and possibly different beams, may allow a UE to reduce a measurement window.

公开(公告)号：US20180324728A1

公开(公告)日：2018-11-08

申请号：US15968598

申请日：2018-05-01

Applicant: QUALCOMM Incorporated

Inventor： Navid ABEDINI ,  Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Bilal SADIQ ,  Tao LUO

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W56/0005 ,  H04L1/08 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0078 ,  H04W48/12 ,  H04W56/001 ,  H04W72/0446

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for conveying timing information that changes across a transmission time interval (TTI) in which multiple redundancy versions of a physical broadcast channel (PBCH) are transmitted.

公开(公告)号：US20180323926A1

公开(公告)日：2018-11-08

申请号：US15969928

申请日：2018-05-03

Applicant: QUALCOMM Incorporated

Inventor： Juergen CEZANNE ,  Jianghong LUO ,  Sundar SUBRAMANIAN ,  Muhammad Nazmul ISLAM ,  Bilal SADIQ ,  Junyi LI

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/0057 ,  H04W72/042 ,  H04W72/046

Abstract: Certain aspects of the present disclosure provide techniques for beam refinement. A base station provides information regarding what transmit beams are used to transmit different reference signal (RS) resources. In some cases, the information indicates whether a same transmit beam is used to transmit a set of RS resources (e.g., symbol, sub-symbol, or frequency resources) or whether different transmit beams are used to transmit the set of RS resources.