公开(公告)号：WO2023010504A1

公开(公告)日：2023-02-09

申请号：PCT/CN2021/111107

申请日：2021-08-06

Applicant: QUALCOMM INCORPORATED ,  CHEN, Siyi ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam ,  CHISCI, Giovanni ,  CHANDE, Vinay ,  ZHANG, Xiaoxia ,  XU, Changlong

Inventor： CHEN, Siyi ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam ,  CHISCI, Giovanni ,  CHANDE, Vinay ,  ZHANG, Xiaoxia ,  XU, Changlong

IPC: H04L5/00 ,  H04L1/00 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described to support accounting for contention-exempt synchronization signal blocks (SSBs) when validating one or more channel state information reference signals (CSI-RS). A base station may transmit, to a user equipment (UE), an indication of the one or more contention-exempt SSBs, and the UE may determine to monitor for a configured CSI-RS if resources assigned to the CSI-RS fall within a time frame associated with the one or more contention-exempt SSBs. Similarly, the base station may transmit configured CSI-RS if resources assigned to the CSI-RS fall within a time frame associated with the one or more contention-exempt SSBs. The time frame associated with the one or more contention-exempt SSBs may include a slot that includes the SSB (s), a symbol that includes the SSB (s), symbols between the SSB (s), slots between the SSB (s), or any combination thereof.

公开(公告)号：WO2022236460A1

公开(公告)日：2022-11-17

申请号：PCT/CN2021/092337

申请日：2021-05-08

Applicant: QUALCOMM INCORPORATED ,  CHISCI, Giovanni ,  SUN, Jing ,  CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam ,  CHEN, Siyi ,  ZHANG, Xiaoxia

Inventor： CHISCI, Giovanni ,  SUN, Jing ,  CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam ,  CHEN, Siyi ,  ZHANG, Xiaoxia

IPC: H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A communication device may receive control signaling indicating a beam configuration. The communication device may select a first beam (for example, a sensing beam) for wireless communication based on the beam configuration. The first beam including a first beam gain and a first pointing direction. The communication device may select a second beam (for example, a transmitting beam) based on the beam configuration. The second beam including a second beam gain and a second pointing direction. The communication device may determine (for example, adjust) an energy detection threshold (EDT) associated with the second beam based on the second beam gain in the first pointing direction and the first beam gain in the first pointing direction. The communication device may sense a channel using the second beam and the EDT associated with the second beam.

公开(公告)号：WO2022213344A1

公开(公告)日：2022-10-13

申请号：PCT/CN2021/086091

申请日：2021-04-09

Applicant: QUALCOMM INCORPORATED ,  CHEN, Siyi ,  CHENDAMARAI KANNAN, Arumugam ,  XU, Changlong ,  SUN, Jing ,  ZHANG, Xiaoxia ,  CHANDE, Vinay

Inventor： CHEN, Siyi ,  CHENDAMARAI KANNAN, Arumugam ,  XU, Changlong ,  SUN, Jing ,  ZHANG, Xiaoxia ,  CHANDE, Vinay

IPC: H04W24/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a trigger for obtaining long-term measurements associated with receiver-assisted channel access. The UE may obtain a long-term measurement for a channel after receiving the trigger. The UE may transmit an indication of the long-term measurement or a preferred beam that is selected based at least in part on the long-term measurement. Numerous other aspects are described.

公开(公告)号：WO2022155678A1

公开(公告)日：2022-07-21

申请号：PCT/US2022/070207

申请日：2022-01-14

Applicant: QUALCOMM INCORPORATED

Inventor： CHANDE, Vinay ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam ,  ZHANG, Xiaoxia ,  DAMNJANOVIC, Aleksandar ,  LUO, Tao

IPC: H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device (WCD) may communicate, during a channel occupancy time (COT) associated with one or more resources, via a no listen before talk (no-LBT) channel access mode. The WCD may initiate, after the COT, a reduced COT associated with the one or more resources, wherein the WCD is configured to reduce channel occupancy during the reduced COT. Numerous other aspects are described.

公开(公告)号：WO2022155646A1

公开(公告)日：2022-07-21

申请号：PCT/US2022/070151

申请日：2022-01-12

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Jing ,  CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam ,  ZHANG, Xiaoxia ,  LUO, Tao

IPC: H04W74/08

Abstract: This disclosure provides systems, methods, and apparatuses for sharing a user equipment (UE)-initiated channel occupancy time (COT) with a base station (BS) by transmitting receiver-side assistance information on an uplink shared channel of an unlicensed radio frequency spectrum band. In some aspects, the UE may perform a clear channel assessment (CCA) prior to an uplink transmit opportunity, and if the CCA is successful, transmit the receiver-side assistance information on the uplink shared channel to share the COT with a BS. Multiple uplink transmit opportunities may be indicated to the UE send the receiver-side assistance information. In some examples, the uplink transmit opportunities may be configured grant occasions for a configured grant or scheduled by downlink control information. By transmitting to the BS, the UE may share the COT with the BS, and the BS may send downlink data to the UE during the COT.

公开(公告)号：WO2021150898A1

公开(公告)日：2021-07-29

申请号：PCT/US2021/014623

申请日：2021-01-22

Applicant: QUALCOMM INCORPORATED

Inventor： CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam ,  ZHOU, Yan ,  ZHANG, Xiaoxia ,  LUO, Tao

IPC: H04W24/10 ,  H04L5/00 ,  H04L5/0057

Abstract: Methods, systems, and devices for wireless communications are described. A device, which may be otherwise known as user equipment (UE) may support channel state information (CSI) operations, such as CSI reporting. A UE may identify a change in CSI pertaining to communications with a base station or any other change in communications with a base station. The UE may transmit, to the base station and based on the change in CSI, a CSI scheduling request, which may include an indication to activate or grant resources for a CSI report transmission from the UE to the base station. The UE may receive, from the base station, a CSI report trigger based on the CSI scheduling request, and transmit, in response to receipt of the CSI report trigger, a CSI report over a physical layer uplink channel (e.g., a physical uplink shared channel (PUSCH)).

公开(公告)号：WO2021061917A1

公开(公告)日：2021-04-01

申请号：PCT/US2020/052400

申请日：2020-09-24

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  CHENDAMARAI KANNAN, Arumugam ,  ZHANG, Xiaoxia ,  CHANDE, Vinay ,  LUO, Tao

IPC: H04B7/06 ,  H04W72/04 ,  H04L25/03 ,  H04L25/02

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting a beam to be allocated for transmitting downlink (DL) data to user equipment (UE). In some implementations, a UE receives a reference signal on each of a number of beams associated with a base station, and determines a delay spread value for each beam. The UE identifies each beam for which the determined channel delay spread value is less than a threshold value, and determines a reference signal received power (RSRP) level for each identified beam. The UE transmits an indication of the determined RSRP levels of the identified beams to the base station, and receives, in response to the transmitted indication, a selection of the beam to be allocated for DL transmissions to the UE. In some other implementations, a UE receives a reference signal on each of a number of beams associated with a base station, and determines a signal-to-interference-plus-noise ratio (SINR) value for each beam of the number of beams. The UE transmits an indication of the determined SINR values to the base station, and receives, in response to the transmitted indication, a selection of one beam of the number of beams to be allocated for downlink (DL) transmissions to the UE, wherein the selection of the one beam is based at least in part on the determined SINR values.

公开(公告)号：WO2021015922A1

公开(公告)日：2021-01-28

申请号：PCT/US2020/039600

申请日：2020-06-25

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  CHENDAMARAI KANNAN, Arumugam ,  CHANDE, Vinay ,  ZHANG, Xiaoxia ,  LUO, Tao ,  PARK, Sungwoo ,  NAM, Wooseok ,  SUN, Jing ,  CHAKRABORTY, Kaushik ,  FAN, Zhifei ,  KHOSHNEVISAN, Mostafa

IPC: H04B7/06 ,  H04W74/08 ,  H04W72/12

Abstract: This disclosure provides systems, methods, and apparatuses for a beam-based channel access countdown procedure. In one aspect, a channel sensing beam may be permitted to include one or more transmit beams and, thus, may differ from a transmit beam that is to be used for a transmission. As such, defining a manner in which a channel access countdown procedure is performed is desirable. Some aspects described herein provide techniques and apparatus for a beam-based channel access countdown procedure. In some aspects, the systems, methods, and apparatuses described herein provide a beam-based channel access countdown procedure that allows a single channel sensing beam, including multiple transmit beams, to be utilized in association with determining channel availability for the multiple transmit beams, thereby improving performance of beam-based directional transmissions.

公开(公告)号：WO2020247477A1

公开(公告)日：2020-12-10

申请号：PCT/US2020/035895

申请日：2020-06-03

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  ZHANG, Xiaoxia ,  LUO, Tao ,  AWONIYI-OTERI, Olufunmilola Omolade ,  CHENDAMARAI KANNAN, Arumugam ,  PARK, Sungwoo ,  CHANDE, Vinay ,  SUN, Jing ,  FAN, Zhifei

IPC: H04L5/00 ,  H04L5/14 ,  H04L27/00 ,  H04L27/26 ,  H04W74/00 ,  H04W74/08 ,  H04W8/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of one or more waveforms supported by a base station, wherein the one or more waveforms include at least one of an orthogonal frequency division multiplexing (OFDM) waveform, a single carrier frequency domain (SC-FD) waveform, or a single carrier time domain (SC-TD) waveform. The UE may determine whether the UE is capable of communicating with the base station based at least in part on the indication. The UE may selectively communicate with the base station using at least one waveform of the one or more waveforms based at least in part on the determination. Numerous other aspects are provided.

公开(公告)号：WO2020236325A1

公开(公告)日：2020-11-26

申请号：PCT/US2020/026847

申请日：2020-04-06

Applicant: QUALCOMM INCORPORATED

Inventor： PARK, Sungwoo ,  YERRAMALLI, Srinivas ,  NAM, Wooseok ,  ZHANG, Xiaoxia ,  LUO, Tao ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam ,  CHANDE, Vinay ,  CHAKRABORTY, Kaushik ,  AWONIYI-OTERI, Olufunmilola Omolade ,  AKKARAKARAN, Sony ,  KHOSHNEVISAN, Mostafa ,  FAN, Zhifei

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for time domain single carrier (SC) waveform communications are described. A user equipment (UE) may generate an SC waveform by resampling (e.g., up-sampling) mapped information bits prior to insertion of a cyclic prefix (CP) or guard interval (GI). Performing resampling prior to CP/GI insertion allows for resource allocation flexibility and a base station may allocate resources for the SC waveform in accordance with this flexibility. For example, a base station may not be limited or restricted to a certain number of resources for SC waveform communications and may therefore determine a resource allocation for the UE based on the capability of the UE to perform resampling prior to CP/GI insertion. The resampling may be performed according to a set of parameters including a resampling ratio, which may be indicated to the UE via control signaling (e.g., from the base station).