公开(公告)号：US11317444B2

公开(公告)日：2022-04-26

申请号：US16177055

申请日：2018-10-31

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Navid Abedini ,  Juergen Cezanne ,  Muhammad Nazmul Islam ,  Junyi Li

IPC: H04W56/00 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04W74/00

Abstract: Aspects of the present disclosure provide for random access channel (RACH) configuration in wireless communication systems. In some examples, a RACH configuration may be selected for use by a scheduled entity in transmitting a RACH signal to a scheduling entity based on an estimated timing advance value. The RACH configuration may include, for example, a transmission time of the RACH signal and/or a RACH waveform configuration identifying at least a cyclic prefix (CP) length and a guard time (GT) for the RACH signal. In some examples, the CP and GT length may each be set to the difference between an estimated maximum round-trip time (RTT) and an estimated minimum RTT between the scheduled entity and the scheduling entity. In some examples, the timing advance value may be estimated as the estimated minimum RTT.

公开(公告)号：US11297659B2

公开(公告)日：2022-04-05

申请号：US16859236

申请日：2020-04-27

Applicant: QUALCOMM Incorporated

Inventor： Parthasarathy Krishnamoorthy ,  Ozcan Ozturk ,  Muhammad Nazmul Islam ,  Kuo-Chun Lee ,  Chetan Chakravarthy ,  Krishna Rao Mandadapu ,  Vijay Marwah ,  Mueez Ahmad

IPC: H04W68/00 ,  H04W74/08 ,  H04W8/18

Abstract: Methods, systems, and devices for wireless communication are described in relation to a Multiple Subscriber Identify Module (MSIM) user equipment (UE). The UE associated with multiple network subscriptions may determine a first timing of a first set of paging occasions associated with a first network subscription of the multiple network subscriptions, wherein the first network subscription is associated with a first network; determine a second timing of a second set of paging occasions associated with a second network subscription of the multiple network subscriptions, wherein the second network subscription is associated with a second network; compare the first timing and the second timing; detect a paging time adjustment condition based on the comparing; and based on the detecting, transmit to the first network, the second network or both a random access signal using a random access resource configured to convey a paging time adjustment request.

公开(公告)号：US11284409B2

公开(公告)日：2022-03-22

申请号：US16394959

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Vasanthan Raghavan ,  Juergen Cezanne ,  Junyi Li ,  Muhammad Nazmul Islam

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/02 ,  H04W72/04 ,  H04B7/08 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple different receive beams at a user equipment (UE) that may be spatially associated with a single transmission beam from a base station. A UE may measure, using multiple different receive beams, multiple instances of a same reference signal transmitted by the base station using a same transmission beam. The UE may provide measurement reports associated with each of the measurements to the base station. A particular receive beam to be used for a downlink transmission may be selected from the multiple receive beams and may be indicated to the UE.

公开(公告)号：US11277869B2

公开(公告)日：2022-03-15

申请号：US16631402

申请日：2018-07-25

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tao Luo ,  Peng Cheng

IPC: H04W74/08 ,  H04W76/19 ,  H04B7/06 ,  H04W16/28 ,  H04W36/08 ,  H04W74/02

Abstract: A user equipment (UE) may initiate a random access (RACH) procedure using an uplink resource selected based on a corresponding received synchronization signal block. The UE may detect a random access procedure trigger. The UE may configure a selection threshold time. The selection threshold time may be based at least in part on a latency requirement of the UE. The UE may select a synchronization signal block having a corresponding uplink resource within the selection threshold time. The synchronization signal block and corresponding uplink resource satisfy one or more parameters or conditions. The UE may transmit a random access preamble on the corresponding uplink resource.

公开(公告)号：US11277815B2

公开(公告)日：2022-03-15

申请号：US16859220

申请日：2020-04-27

Applicant: QUALCOMM Incorporated

Inventor： Parthasarathy Krishnamoorthy ,  Ozcan Ozturk ,  Muhammad Nazmul Islam ,  Kuo-Chun Lee ,  Chetan Chakravarthy ,  Krishna Rao Mandadapu ,  Vijay Marwah ,  Mueez Ahmad

IPC: H04W68/00 ,  H04W76/27 ,  H04W60/00 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communication are described in relation to a Multiple Subscriber Identify Module (MSIM) user equipment (UE). The UE associated with multiple network subscriptions may determine a first timing of a first set of paging occasions associated with a first network subscription of the multiple network subscriptions, wherein the first network subscription is associated with a first network; determine a second timing of a second set of paging occasions associated with a second network subscription of the multiple network subscriptions, wherein the second network subscription is associated with a second network; compare the first timing and the second timing; detect a paging time adjustment condition based on the comparing; and transmit, based on detecting the paging time adjustment condition, a paging frame offset adjustment request to the first network, the second network or both.

公开(公告)号：US11212860B2

公开(公告)日：2021-12-28

申请号：US16189229

申请日：2018-11-13

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Muhammad Nazmul Islam

IPC: H04W72/04 ,  H04W74/08 ,  H04B7/0408 ,  H04W76/18 ,  H04W16/28 ,  H04B17/318 ,  H04L5/00 ,  H04B7/06 ,  H04B17/336 ,  H04B7/08 ,  H04B17/17 ,  H04B7/0413

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a beam failure condition. The UE may determine whether a reference signal beam satisfies a beam strength threshold. The UE may transmit, based at least in part on a result of the determining, a beam failure recovery (BFR) signal using resources associated with the reference signal beam.

公开(公告)号：US20210378019A1

公开(公告)日：2021-12-02

申请号：US17366595

申请日：2021-07-02

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Sony Akkarakaran ,  Muhammad Nazmul Islam ,  Tao Luo

IPC: H04W74/08 ,  H04W76/10

Abstract: This disclosure provides systems, methods and apparatus for wireless communications that support fallback from a 2-step to a 4-step random access procedures. A user equipment (UE) may establish a connection with a base station using a random access procedure. The random access procedure may be a 2-step random access procedure and reduce a number of handover exchange messages. The 2-step random access procedure may include the UE transmitting, to the base station, a first random access message including a preamble and a payload. In some implementations, the base station may receive the preamble but fail to receive or decode the payload. The random access procedure may utilize the received preamble information instead of performing retransmission of the first random access message. The base station may transmit a second random access message to the UE indicating, explicitly or implicitly, a fallback to a 4-step random access procedure for connection establishment.

公开(公告)号：US11191061B2

公开(公告)日：2021-11-30

申请号：US15468594

申请日：2017-03-24

Applicant: QUALCOMM Incorporated

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

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

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, where the plurality of signals include a plurality of beam reference signals, a plurality of beam refinement reference signals, a plurality of channel state information reference signals (CSI-RSs), or a combination thereof. 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.

公开(公告)号：US11178590B2

公开(公告)日：2021-11-16

申请号：US16537236

申请日：2019-08-09

Applicant: QUALCOMM incorporated

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

IPC: H04W56/00 ,  H04W40/22 ,  H04W88/08 ,  H04L12/733 ,  H04W72/04 ,  H04W40/12

Abstract: Methods, systems, and devices for wireless communications are described that provide for hop-count indication in an integrated access and backhaul (IAB) network. An IAB-node may adopt and indicate multiple values for hop-count. The hop-count may be conveyed by a number of different reference signals and channels. A resource pattern and/or a slot pattern may also be associated with the hop-count to simply signaling. By associating the patterns with the hop-count, an IAB-node may be able to infer the resource pattern used by another IAB-node.

公开(公告)号：US11172407B2

公开(公告)日：2021-11-09

申请号：US16270139

申请日：2019-02-07

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Jianghong Luo ,  Bilal Sadiq ,  Muhammad Nazmul Islam ,  Karl Georg Hampel ,  Hong Cheng ,  Juergen Cezanne ,  Junyi Li

IPC: H04W28/26 ,  H04W72/04 ,  H04W72/12 ,  H04W24/10 ,  H04W28/02 ,  H04W8/22 ,  H04B7/0413 ,  H04L5/00 ,  H04W16/02 ,  H04W16/28 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for partitioning of time-frequency resources for types of traffic separately. A centralized scheduler in a centralized system or a set of access nodes (ANs) in a distributed system may allocate a portion of a set of resources for a first traffic type (e.g., control or data traffic). In some cases, multiple ANs may exchange reports or measurements to determine the resources to allocate to a given traffic type. The allocated resources may be repurposed for use by a different traffic type (e.g., data traffic resources may be repurposed an used for control traffic resources) in order to account for varying traffic conditions (e.g., unscheduled control traffic).