公开(公告)号：US20210297990A1

公开(公告)日：2021-09-23

申请号：US17249852

申请日：2021-03-16

Applicant: QUALCOMM Incorporated

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

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

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a physical broadcast channel (PBCH) communication from a base station (BS). The UE may identify, based at least in part on a determination that the PBCH communication indicates a reference signal that is to be transmitted prior to transmission of a remaining minimum system information (RMSI) physical downlink control channel (PDCCH) communication, one or more radio resources in which the reference signal is to be transmitted. The UE may monitor for the reference signal, from the BS, in the one or more radio resources prior to reception of the RMSI PDCCH communication. Numerous other aspects are provided.

公开(公告)号：US20210266978A1

公开(公告)日：2021-08-26

申请号：US17248334

申请日：2021-01-20

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam SAKHNINI ,  Jing SUN ,  Tao LUO ,  Zhifei FAN ,  Arumugam CHENDAMARAI KANNAN ,  Xiaoxia ZHANG ,  Juan MONTOJO

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

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may transmit, and a user equipment (UE) may receive, initial timing advance information in a msg2 communication of a four-step random access channel procedure based at least in part on a subcarrier spacing in a cell associated with the base station. The UE may transmit, and the base station may receive, a msg3 communication with an initial timing advance that is based at least in part on the initial timing advance information. The base station may transmit, and the UE may receive, updated timing advance information resolving a timing advance wrap-around between the UE and the base station based at least in part on the base station detecting the msg3 communication. Numerous other aspects are provided.

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：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：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：US20210266831A1

公开(公告)日：2021-08-26

申请号：US17249251

申请日：2021-02-24

Applicant: QUALCOMM INCORPORATED

Inventor： Yan ZHOU ,  Iyab Issam SAKHNINI ,  Tao LUO

IPC: H04W52/02 ,  H04W72/12 ,  H04W72/04 ,  H04W72/14

Abstract: Wireless communications systems and methods related to updating a physical downlink control channel (PDCCH) monitoring parameter are provided. A user equipment (UE) determines a PDCCH monitoring parameter based on a current operating parameter. The UE transmits a PDCCH monitoring configuration request including the PDCCH monitoring parameter to a base station (BS). The BS may adjust the PDCCH monitoring parameter in accordance with the PDCCH monitoring configuration request. The UE may monitor PDCCH based on the PDCCH monitoring parameter.

公开(公告)号：US20210258934A1

公开(公告)日：2021-08-19

申请号：US17248363

申请日：2021-01-21

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam SAKHNINI ,  Tao LUO ,  Wooseok NAM ,  Peter Pui Lok ANG ,  Juan MONTOJO ,  Olufunmilola Omolade AWONIYI-OTERI ,  Jelena DAMNJANOVIC ,  Linhai HE ,  Huilin XU

IPC: H04W72/04

Abstract: Methods and apparatuses described herein provide a physical downlink control channel (PDCCH) candidate hopping function that reduces collisions between PDCCH candidates, particularly between PDCCH candidates associated with reduced capability user equipment (UE). For example, the hopping function may be implemented as part of a PDCCH candidate to control channel element (CCE) function or may be applied separately from the PDCCH candidate to CCE function. The hopping function may reduce persistent collisions between PDCCH candidates by correlating the mapping behavior with a value that changes over time. Some techniques and apparatuses described herein provide signaling for configuration and activation/deactivation/modification of the hopping pattern. Thus, collisions between PDCCH candidates are reduced, thereby conserving computing resources and wireless communication resources. Furthermore, the reduction of collisions may improve performance of UEs with reduced PDCCH capabilities, such as reduced-capability UEs. Numerous other aspects are provided.

公开(公告)号：US20210243811A1

公开(公告)日：2021-08-05

申请号：US17150676

申请日：2021-01-15

Applicant: QUALCOMM Incorporated

Inventor： Wooseok NAM ,  Tao LUO ,  Linhai HE ,  Peter GAAL ,  Iyab Issam SAKHNINI ,  Juan MONTOJO ,  Jelena DAMNJANOVIC

IPC: H04W74/08

Abstract: Certain aspects of the present disclosure provide techniques for random access channel (RACH) occasion assignment. A method that may be performed by a user equipment (UE) includes receiving, from a base station (BS), a plurality of synchronization signal blocks (SSBs), each SSB associated with a different transmit beam of the BS. The method further includes transmitting a random-access preamble on a first RACH occasion associated with a first SSB of the plurality of SSBs, wherein the first RACH occasion is one of a plurality of RACH occasions associated with the plurality of SSBs, wherein the first SSB is associated with a first number of the plurality of RACH occasions and a second SSB of the plurality of SSBs is associated with a second number of the plurality of RACH occasions, wherein the first number is different than the second number.

公开(公告)号：US20210119697A1

公开(公告)日：2021-04-22

申请号：US17068144

申请日：2020-10-12

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng WANG ,  Iyab Issam SAKHNINI ,  Jun MA ,  Peter GAAL

IPC: H04B7/185 ,  H04W56/00 ,  H04W74/08 ,  H04W68/00

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for managing beam configurations and parameters for non-terrestrial networks. In some implementations, a UE may detect a synchronization signal block (SSB) transmitted by a satellite via a first beam. Aspects of the present disclosure recognize that each beam may be identified by a unique SSB index based at least in part on a time or frequency on which the SSB is received. Thus, the SSB may be identified based on a frequency-domain SSB index or a time-domain SSB index. The UE may further determine one or more wireless communication parameters associated with the first beam. The UE may generate a mapping between the SSB and the wireless communication parameters associated with the first beam, and thereafter communicate with the satellite using the mapping.

公开(公告)号：US20210068169A1

公开(公告)日：2021-03-04

申请号：US17003835

申请日：2020-08-26

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng WANG ,  Iyab Issam SAKHNINI ,  Dan ZHANG ,  Peter GAAL ,  Jun MA ,  Huilin XU

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

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication. A method that may be performed by a base station (BS), the method including determining a plurality of root sets, wherein each root set of the plurality of root sets comprise at least a first root and a second root. In some examples, the method includes transmitting signaling that indicates the plurality of root sets.