公开(公告)号：US20210266977A1

公开(公告)日：2021-08-26

申请号：US17181981

申请日：2021-02-22

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Iyab Issam SAKHNINI ,  Tao LUO

IPC: H04W74/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first random access channel (RACH) message to a base station, and monitor for a second RACH message from the base station in a set of resource candidates that are based at least in part on the transmitted first RACH message absent downlink control information. The set of resource candidates may be outside of a physical downlink control channel. Numerous other aspects are provided.

公开(公告)号：US20210266975A1

公开(公告)日：2021-08-26

申请号：US17179290

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Tao LUO ,  Peter GAAL ,  Juan MONTOJO

IPC: H04W74/08 ,  H04W16/28 ,  H04W72/12

Abstract: Aspects described herein relate to transmitting a first random access message in a random access procedure based on whether beam refinement is configured. In an aspect, it can be determined whether a base station uses beam refinement for receiving a first random access message in a two-step random access procedure. Based on whether the base station uses beam refinement, one or more parameters for transmitting the first random access message can be determined, and the first random access message can be transmitted to the base station and based on the one or more parameters.

公开(公告)号：US20210266974A1

公开(公告)日：2021-08-26

申请号：US17179139

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Tao LUO ,  Juan MONTOJO ,  Peter GAAL ,  Yan ZHOU ,  Iyab Issam SAKHNINI ,  Jelena DAMNJANOVIC ,  Wooseok NAM

IPC: H04W74/08 ,  H04W74/00 ,  H04W16/28 ,  H04W56/00 ,  H04W24/10 ,  H04W24/08 ,  H04B17/318

Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for beam refinement via physical random access channel (PRACH) repetition. A method that may be performed by a network entity includes determining resources to monitor for a PRACH transmission sent from a user equipment (UE) as part of a random access channel (RACH) procedure, performing receive beam sweeping when receiving PRACH repetitions sent using the determined resources, using results of the receive beam sweeping to refine one or more beams and to select a refined beam of the refined one or more beams, and using the selected refined beam for at least one of receiving a subsequent message from the UE as part of the RACH procedure or sending a subsequent message to the UE as part of the RACH procedure.

公开(公告)号：US20210266973A1

公开(公告)日：2021-08-26

申请号：US17178852

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Tao LUO ,  Peter GAAL ,  Juan MONTOJO

IPC: H04W74/08 ,  H04W72/04

Abstract: This disclosure provides methods, devices and systems for random access procedures and beam refinement for wireless communications. A base station may repeat a transmission of a random access message 2 to a user equipment (UE) on a plurality of physical downlink control channel (PDDCH) candidates to improve reception of the random access message 2 and provide for selection of a refined beam. The UE may receive the random access message 2 on the plurality of repeated PDCCH candidates during a random access response window. The UE may select an offset based on a strongest of the plurality of PDCCH candidates. The UE may transmit a random access message 3 on resources indicated by the random access message 2 that are time shifted by the offset. The base station may select a beam for transmitting a random access message 4 based on the offset.

公开(公告)号：US20210266952A1

公开(公告)日：2021-08-26

申请号：US17182934

申请日：2021-02-23

Applicant: QUALCOMM Incorporated

Inventor： Yan ZHOU ,  Tao LUO ,  Jelena DAMNJANOVIC ,  Iyab Issam SAKHNINI ,  Mahmoud TAHERZADEH BOROUJENI ,  Juan MONTOJO

IPC: H04W72/14 ,  H04L12/24 ,  H04L5/00 ,  H04L1/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive activation signaling for a configuration of a semi-persistent transmission procedure; activate the semi-persistent transmission procedure based at least in part on receiving the activation signaling; and deactivate the semi-persistent transmission procedure based at least in part on a deactivation time. In some aspects, the UE may activate the semi-persistent transmission procedure based at least in part on transmitting uplink feedback. Numerous other aspects are provided.

公开(公告)号：US20210243816A1

公开(公告)日：2021-08-05

申请号：US17247207

申请日：2020-12-03

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Juan MONTOJO ,  Tao LUO ,  Peter GAAL ,  Jelena DAMNJANOVIC

IPC: H04W74/08 ,  H04L12/26 ,  H04L27/20 ,  H04W56/00 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a set of modulations for a random access message associated with a two-step random access channel (RACH) procedure. The set of modulations may be either a first set of modulations or a second set of modulations that is different from the first set of modulations. The set of modulations may be determined based at least in part on whether a signal strength satisfies a signal strength threshold. The UE may transmit the random access message based at least in part on the determined set of modulations. The random access message may include a physical uplink shared channel modulated using the determined set of modulations. Numerous other aspects are provided.

公开(公告)号：US20210243631A1

公开(公告)日：2021-08-05

申请号：US17155888

申请日：2021-01-22

Applicant: QUALCOMM Incorporated

Inventor： Hamed PEZESHKI ,  Tao LUO ,  Sony AKKARAKARAN ,  Arumugam CHENDAMARAI KANNAN ,  Taesang YOO ,  Ajay GUPTA ,  Mahmoud TAHERZADEH BOROUJENI ,  Jingchao BAO

IPC: H04W24/10 ,  H04W76/27 ,  H04B7/06 ,  H04B7/08

Abstract: A method of wireless communication by a user equipment (UE) may include receiving a message requesting estimated channel characteristics of a secondary band based on measuring characteristics of a channel in the primary band. The method also includes measuring characteristics of the channel in the primary band. The method estimates channel characteristics of the secondary band based on the primary band characteristics measurements. The estimating may occur without measuring signals in the secondary band. Further, the method may report the estimated channel characteristics of the secondary band and receive an indication of a secondary cell group, based on the estimated channel characteristics of the secondary band.

公开(公告)号：US20210185654A1

公开(公告)日：2021-06-17

申请号：US17118123

申请日：2020-12-10

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Tao LUO ,  Arumugam CHENDAMARAI KANNAN

IPC: H04W72/04 ,  H04W72/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit, to a user equipment, an indication of a temporary resource change, wherein the temporary resource change is associated with at least one of a resource configuration, a repetition configuration, or a combination thereof. Numerous other aspects are provided.

公开(公告)号：US20210153053A1

公开(公告)日：2021-05-20

申请号：US17077524

申请日：2020-10-22

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Arumugam CHENDAMARAI KANNAN ,  Tao LUO

IPC: H04W24/10 ,  H04B17/336 ,  H04B7/06 ,  H04B17/318 ,  H04W76/27 ,  H04W80/02 ,  H04W72/04 ,  H04L1/00

Abstract: An interference metric measured at a specific antenna may differ from interference metrics at different antennas. As a result, any actions based on the interference metric may unduly be influenced by such difference. In some implementations, an apparatus or device reports an overall interference metric that accounts for spatial variations in interference metrics at different antennas. An example method includes measuring, by a user equipment, an interference metric at each antenna of two or more antennas for wireless signals transmitted by a base station, generating an overall interference metric based on the interference metrics for the two or more antennas, and transmitting, by the user equipment, the overall interference metric to the base station.

公开(公告)号：US20210153052A1

公开(公告)日：2021-05-20

申请号：US17077390

申请日：2020-10-22

Applicant: QUALCOMM Incorporated

Inventor： Mahmoud TAHERZADEH BOROUJENI ,  Arumugam CHENDAMARAI KANNAN ,  Tao LUO

IPC: H04W24/10 ,  H04B17/336 ,  H04B7/06 ,  H04B17/318 ,  H04W76/27 ,  H04W80/02 ,  H04W72/04

Abstract: An interference metric at a specific time instance may differ from interference metrics at different time instances. As a result, any actions based on the interference metric may unduly be influenced by such difference. In some implementations, an apparatus or device reports an overall interference metric that accounts for temporal variations in interference metrics at different time instances. An example method includes measuring, by a user equipment, an interference metric at two or more time instances for wireless signals transmitted by a base station, generating an overall interference metric based on the interference metrics at the two or more time instances, and transmitting, by the user equipment, the overall interference metric to the base station.