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：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：US20210258930A1

公开(公告)日：2021-08-19

申请号：US17177009

申请日：2021-02-16

Applicant: QUALCOMM Incorporated

Inventor： Wooseok NAM ,  Tao LUO ,  Juan MONTOJO ,  Peter Pui Lok ANG ,  Linhai HE

IPC: H04W72/04 ,  H04W68/02 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to wireless communications, and more particularly, techniques for an enhanced paging procedure. A method that may be performed by a user equipment (UE) includes detecting, during a paging occasion (PO), at least one downlink control information (DCI) that indicates a paging message and additional downlink signals and using the additional downlink signals to enhance processing of the paging message.

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：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：US20210083811A1

公开(公告)日：2021-03-18

申请号：US17099727

申请日：2020-11-16

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Juan MONTOJO ,  Xiliang LUO

IPC: H04L1/18 ,  H04L5/00 ,  H04L1/16

Abstract: Bits for acknowledgement (ACK) and/or negative acknowledgement (NAK) may be allocated based on whether a special subframe configuration in a TDD configuration permits downlink transmission. For carrier aggregation, ACK/NAK bits may be allocated only to special subframes in component carriers (CCs) which permit downlink transmission. Also, for example, ACK/NAK bits may be allocated to all CC special subframes if a single CC is configured to allow downlink transmission on one of its special subframes. ACK/NAK bits may also be allocated to all special subframes.

公开(公告)号：US20210022162A1

公开(公告)日：2021-01-21

申请号：US16947079

申请日：2020-07-17

Applicant: QUALCOMM Incorporated

Inventor： Yan ZHOU ,  Tao LUO ,  Konstantinos DIMOU ,  Juan MONTOJO ,  Xiaoxia ZHANG ,  Mostafa KHOSHNEVISAN ,  Seyed Ali Akbar FAKOORIAN ,  Hamed PEZESHKI

IPC: H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, in a current cycle, information related to downlink transmission duplication on multiple component carriers, wherein each of the multiple component carriers is associated with a semi-persistent scheduling (SPS) configuration. The UE may monitor a subset of the multiple component carriers for a scheduled SPS occasion in one or more of the current cycle or a next cycle based at least in part on the information related to the downlink transmission duplication on the multiple component carriers in the current cycle. Numerous other aspects are provided.

公开(公告)号：US20210021450A1

公开(公告)日：2021-01-21

申请号：US16927971

申请日：2020-07-13

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Jing SUN ,  Tao LUO ,  Srinivas YERRAMALLI ,  Zhifei FAN ,  Mostafa KHOSHNEVISAN ,  Wanshi CHEN ,  Juan MONTOJO ,  Peter GAAL ,  Arumugam CHENDAMARAI KANNAN

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04W56/00

Abstract: Aspects relate to implementing multiplexing with a single carrier waveform. In some examples, intra-symbol multiplexing of data and other information on a single carrier symbol may be implemented utilizing pre-discrete Fourier transform (DFT) multiplexing. In addition, time domain rate-matching may be performed on the data to rate-match the data around the other information based on a number of usable samples in the time domain within the symbol for the data.