公开(公告)号：US20220210865A1

公开(公告)日：2022-06-30

申请号：US17572311

申请日：2022-01-10

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/28 ,  H04B7/06

Abstract: Techniques are described herein for periodically transmitting a first set of signals (e.g., reference signals) during an on-period of a discontinuous reception (DRX) cycle rather than during an off-period of the DRX cycle. Such techniques may enable a user equipment (UE) operating in a DRX mode to conserve additional power during the DRX cycle. A periodicity for transmitting the first set of signals during the on-period may be determined. The periodicity may indicate that every one-in-N DRX cycles, the first set of signals are to be transmitted during the on-period. During other DRX cycles, the first set of signals may be transmitted during the off-period. When the first set of signals are transmitted during the on-period, the UE may refrain from activating certain components during the off-period, thereby conserving power.

公开(公告)号：US11363642B2

公开(公告)日：2022-06-14

申请号：US17240039

申请日：2021-04-26

Applicant: QUALCOMM incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Wanshi Chen ,  Bilal Sadiq ,  Makesh Pravin John Wilson ,  Junyi Li

IPC: H04W74/08 ,  H04B7/0408 ,  H04L1/00 ,  H04L27/26 ,  H04W74/00

Abstract: Methods, systems, and devices for multiple random access channel (RACH) message 1 (Msg1) transmission for physical downlink control channel (PDCCH) ordered RACH are described. A user equipment (UE) may perform the multiple Msg1 transmission as part of a CFRA or CBRA procedure for access. The UE may perform the multiple Msg1 transmissions in a cyclic consecutive manner during configured RACH occasions or according to explicit time and frequency indications of a random access response (RAR) window. Based on the multiple Msg1 transmission procedure, the UE may reduce latency for random access procedure on the RACH and improve signaling throughput. In some cases, the UE may support beam correspondence and may perform multiple Msg1 transmissions to enhance multi-beam diversity during RACH transmission by performing transmission corresponding to RACH occasions mapped to different synchronization signal blocks (SSBs).

公开(公告)号：US11310833B2

公开(公告)日：2022-04-19

申请号：US16556146

申请日：2019-08-29

Applicant: QUALCOMM Incorporated

Inventor： Ori Auslender ,  Ran Berliner ,  Ambarish Tripathi ,  Junsheng Han ,  Muhammad Nazmul Islam ,  Michael Levitsky

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

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine to initiate a random access channel (RACH) procedure with a base station (BS). The UE may determine, based at least in part on determining to initiate the RACH procedure, whether a timing alignment timer, associated with a timing alignment of the UE and the BS, is expired. The UE may initiate the RACH procedure using the timing alignment based at least in part on determining that the timing alignment timer is not expired. Numerous other aspects are provided.

公开(公告)号：US11309941B2

公开(公告)日：2022-04-19

申请号：US16794120

申请日：2020-02-18

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/00 ,  H04B7/0417 ,  H04B7/08 ,  H04B7/06 ,  H04B7/0452 ,  H01Q1/24 ,  H04B7/0404 ,  H04B7/0426 ,  H04W16/28 ,  H04W28/02 ,  H04W40/08 ,  H04W52/14 ,  H04W74/08

Abstract: A UE may select a first beam for communication with a base station. The UE may attempt, through the selected first beam, at least one RACH procedure with the base station. The UE may determine that the at least one RACH procedure failed with the base station. The UE may send, after a successful RACH procedure with the base station, information indicating that the at least one RACH procedure failed. In an aspect, the UE may select a new beam for communication with the base station after the determination that the at least one RACH procedure failed, and at least a portion of the successful RACH procedure may be performed through the selected new beam.

公开(公告)号：US11304210B2

公开(公告)日：2022-04-12

申请号：US17068408

申请日：2020-10-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/08 ,  H04B7/06 ,  H04W72/04 ,  H04W16/28 ,  H04W36/06 ,  H04W36/32 ,  H04W52/02

Abstract: Techniques are described for wireless communication. One method includes exchanging one or more signals between a first wireless node and a second wireless node, determining, at the first wireless node and based on the one or more signals, a range of correspondence between at least one of a transmit beam of the first wireless node and a receive beam of the first wireless node, determining a difference between indices of the transmit beam of the first wireless node and the receive beam of the first wireless node, and determining an uncertainty region for beam mapping based on the determined difference.

公开(公告)号：US11265918B2

公开(公告)日：2022-03-01

申请号：US16592308

申请日：2019-10-03

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W74/08 ,  H04W56/00 ,  H04W74/02 ,  H04B7/06 ,  H04W76/11 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for transmitting a first random-access channel (RACH) message and receiving a second RACH message that includes a timing advance command (TAC) in a physical downlink control channel (PDCCH). These techniques may be used by a user equipment (UE) or an integrated access backhaul (IAB) node to achieve time synchronization while limiting overhead. In one example, in an IAB network, an IAB node may transmit a first RACH message to a neighbor node, and the IAB node may receive a TAC in a PDCCH of a second RACH message from the neighbor node. In another example, in a beam failure recovery (BFR) procedure, a UE may transmit a first RACH message to a base station, and the UE may receive a TAC in a PDCCH of a second RACH message from the base station.

公开(公告)号：US20220060960A1

公开(公告)日：2022-02-24

申请号：US17453762

申请日：2021-11-05

Applicant: QUALCOMM INCORPORATED

Inventor： Jung Ho Ryu ,  Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Jianghong Luo ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W36/32 ,  H04W36/00 ,  H04L5/00 ,  H04W36/36 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may initiate handover from one base station to another. The handover procedure may not include random access channel (RACH) transmissions, and thus may be a localized RACH-less handover. The UE may initiate handover to a new base station based on the relative location of the UE and the new base station, some predetermined time, or based on the characteristics of the signals from each base station.

公开(公告)号：US11259300B2

公开(公告)日：2022-02-22

申请号：US16858022

申请日：2020-04-24

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Joseph Binamira Soriaga ,  Ashwin Sampath ,  Junyi Li ,  Juergen Cezanne ,  Tingfang Ji ,  Alexei Yurievitch Gorokhov ,  Muhammad Nazmul Islam

IPC: H04W72/04 ,  H04L5/00

Abstract: A structure where there are self-contained subframes/slots with smaller TTIs within the subframes/slots is provided to address the issues in MMW scheduling. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may transmit downlink information to at least one UE using a plurality of downlink TTIs within a subframe/slot. The apparatus may receive uplink information from the at least one UE using at least one uplink region within the subframe/slot. In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive downlink information from a base station using at least one downlink TTI within a subframe/slot. The subframe/slot may include a plurality of downlink TTIs and at least one uplink region. The apparatus may transmit uplink information to the base station using the at least one uplink region within the subframe/slot.

公开(公告)号：US11258575B2

公开(公告)日：2022-02-22

申请号：US16184864

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 ,  H04L5/16 ,  H04B7/06 ,  H04B7/0408 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0452

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may utilize different beam configurations for different signal types, traffic demand, path loss, capabilities of the wireless device or other wireless devices in the system, and the like. The wireless device also may be capable of determining different duplexing modes, which may be utilized in addition to the different beam configurations. The duplexing mode may be based on received measurement reports (e.g., from one or more reference signals) or in some instances, the duplexing mode may be determined by another node (e.g., a core network node, a base station) and transmitted to the wireless device.

公开(公告)号：US11252756B2

公开(公告)日：2022-02-15

申请号：US16654987

申请日：2019-10-16

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Tao Luo ,  Sumeeth Nagaraja

IPC: H04W74/08 ,  H04W52/04 ,  H04W74/00 ,  H04W72/12 ,  H04B7/08 ,  H04W52/50 ,  H04W52/32 ,  H04W52/24 ,  H04B7/06 ,  H04W52/14 ,  H04W52/48

Abstract: Methods, systems, and devices for wireless communication are described for selecting different uplink transmission parameters for transmission or retransmission of a random access message. A user equipment (UE) may transmit or retransmit a random access message such as a layer 2 or layer 3 (L2/L3) message to a base station during a random access procedure. The UE may select a transmission beam, uplink resource or transmission power for the transmission of the L2/L3 message that differ from those used for transmission of a previous random access message. The selection may be based on path loss associated with synchronization signals or previous transmissions. The selection may also be based on a maximum number of retransmissions.