公开(公告)号：WO2021163050A1

公开(公告)日：2021-08-19

申请号：PCT/US2021/017239

申请日：2021-02-09

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L1/18 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a grant scheduling an acknowledgement feedback transmission for the grant. The UE may identify, based at least in part on a first timing associated with the grant, a second timing associated with the acknowledgment feedback transmission, or a combination thereof, a duration for a channel clearance procedure to be performed before transmitting the acknowledgement feedback transmission. The UE may perform the channel clearance procedure using the identified duration. The UE may transmit the acknowledgement feedback transmission based at least in part on a result of the channel clearance procedure.

公开(公告)号：WO2021158386A1

公开(公告)日：2021-08-12

申请号：PCT/US2021/014974

申请日：2021-01-26

Applicant: QUALCOMM INCORPORATED

Inventor： CHANDE, Vinay ,  KANNAN, Arumugam Chendamarai ,  ZHANG, Xiaoxia ,  YERRAMALLI, Srinivas ,  SUN, Jing ,  LUO, Tao

IPC: H04W72/12 ,  H04W74/08

Abstract: Methods related to wireless communications systems and medium access in a radio frequency band of a shared spectrum are provided. A device contends for a first reserved time interlace including a plurality of channel occupancy times (COTs). The device transmits a first communication signal in a first COT of the plurality of COTs in response to winning the first reserved time interlace. The device transmits a second communication signal in a second COT of the plurality of COTs, the second COT spaced in time from the first COT, in response to winning the first reserved time interlace.

公开(公告)号：WO2021158303A1

公开(公告)日：2021-08-12

申请号：PCT/US2020/066250

申请日：2020-12-18

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08

Abstract: Aspects are provided which improve LBT by associating contention windows with transmission burst lengths and by allowing contention windows and maximum burst lengths to be adjusted based on interference activity. For downlink, a UE receives a PG for a downlink transmission from a base station indicating a CCA length based on a contention window size associated at least with a burst length for the downlink transmission. The UE performs, after receiving the pre-grant, a CCA based on the CCA length, transmits an APG to the base station when the CCA is successful, and receives the downlink transmission in response to the APG. For uplink, the base station performs a CCA based on a contention window associated at least with a burst length for an uplink transmission, transmits an uplink grant to the UE when the CCA is successful, and receives the uplink transmission in response to the uplink grant.

公开(公告)号：WO2021158302A1

公开(公告)日：2021-08-12

申请号：PCT/US2020/066247

申请日：2020-12-18

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L1/00 ,  H04L1/16

Abstract: A first apparatus may be implemented as a user equipment (UE) or a component thereof. The first apparatus may be configured to receive a pre-grant message from a base station on a wireless channel. The first apparatus may be further configured to determine an interference level associated with the wireless channel. The first apparatus may then indicate the interference level to the base station in response to the pre-grant message. A second apparatus may be implemented as a base station or a component thereof. The second apparatus may be configured to transmit a pre-grant message to a UE on a wireless channel. The second apparatus may be further configured to detect for an acknowledgement (ACK) message responsive to the pre-grant message from the UE. The second apparatus may then determine an interference level associated with the wireless channel proximate to the UE based on detecting for the ACK message.

公开(公告)号：WO2021108152A1

公开(公告)日：2021-06-03

申请号：PCT/US2020/060623

申请日：2020-11-14

Applicant: QUALCOMM INCORPORATED

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

IPC: H04B7/06 ,  H04B7/08 ,  H04W72/04 ,  H04W52/14

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for frame based operation and medium contention procedures in wireless networks. In some aspects, devices of a wireless network may perform receiver side contention operations. To illustrate, reference signals from a receiving device may be transmitted to a transmitting device and used by the transmitting device to estimate interference for transmitter side transmissions. Such receiver side reference signals may more accurately reflect the interference profile that transmissions sent by the transmitting device will face, such as when operating in a spectrum shared with many devices. The transmitting device may utilize the beam(s) that satisfy interference criteria when receiving the reference signals to transmit data. Receiver side frame based operation may provide a more stable interference profile which enables better rate prediction, and the better rate prediction may increase reliability and overall network and medium throughput.

公开(公告)号：WO2021097476A1

公开(公告)日：2021-05-20

申请号：PCT/US2020/070762

申请日：2020-11-10

Applicant: QUALCOMM INCORPORATED

Inventor： CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam ,  ZHANG, Xiaoxia ,  SUN, Jing ,  KHOSHNEVISAN, Mostafa ,  YERRAMALLI, Srinivas ,  LUO, Tao

IPC: H04L5/00 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive single downlink control information (DCI) that indicates resources for a plurality of transmission configuration indicator (TCI) states for transmitting or receiving communications in a plurality of transmission time intervals (TTIs). The UE may transmit or receive the communications in the plurality of TTIs in accordance with the DCI. Numerous other aspects are provided.

公开(公告)号：WO2020251845A1

公开(公告)日：2020-12-17

申请号：PCT/US2020/036283

申请日：2020-06-05

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W72/04 ,  H04B7/024

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, transmissions from a neighboring base station may interfere with downlink transmissions from a serving base station to a target user equipment (UE). To coordinate interference between the base stations (e.g., mitigate interference, stabilize interference, etc.), the serving base station may generate an interference coordination message and may transmit the message over-the-air (OTA) to one or more neighboring base stations. The message may include parameters indicating a coordination scheme for the neighboring base station(s) to use for modifying one or more scheduling decisions. The coordination scheme may be configured or dynamically selected and may include interfering beam fixation, interfering beam suppression, or interfering beam avoidance. A neighboring base station receiving the OTA interference coordination message may modify a scheduling decision to mitigate or stabilize interference when the serving base station is transmitting to the target UE.

公开(公告)号：WO2020132540A3

公开(公告)日：2020-06-25

申请号：PCT/US2019/068006

申请日：2019-12-20

Applicant: QUALCOMM INCORPORATED

Inventor： JOHN WILSON, Makesh Pravin ,  LUO, Tao ,  KHOSHNEVISAN, Mostafa ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam ,  ZHANG, Xiaoxia ,  CHANDE, Vinay

IPC: H04L5/00 ,  H04W52/14 ,  H04W52/34

Abstract: Methods, systems, and devices for wireless communications are described for adjusting transmit powers for concurrent uplink transmissions from a user equipment (UE) to multiple transmission reception points (TRPs), or dropping one or more uplink transmissions to one or more TRPs, based on one or more parameters. A UE may identify that a combined transmission power for concurrent uplink transmissions exceeds a power threshold of the UE, and may adjust a power for one or more of the concurrent uplink transmissions, or drop one or more of the uplink transmissions based on such an identification. If a difference in transmit powers of the concurrent uplink transmissions exceeds a power difference threshold, the UE may drop one or more lower priority transmissions. The UE may multiplex at least a portion of a dropped transmission with another uplink transmission that will be transmitted, such as by rate-matching or puncturing.

公开(公告)号：WO2020131940A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/066956

申请日：2019-12-17

Applicant: QUALCOMM INCORPORATED

Inventor： JOHN WILSON, Makesh Pravin ,  LUO, Tao ,  ZHANG, Xiaoxia ,  CHANDE, Vinay ,  SUN, Jing ,  CHENDAMARAI KANNAN, Arumugam

IPC: H04W24/10 ,  H04B7/04

Abstract: Methods, systems, and devices for multi-transmit receive point candidate identification are described. A base station may indicate, to a user equipment (UE), one or more measurements to be performed on multiple transmit receive points (TRPs) for determination of TRP candidates for communications between the UE and the base station. The UE may perform the measurements on each of the TRPs, and transmit a report to the base station that is based on the measurements. The report may be associated with the TRP candidates. The base station may select one or more of the TRP candidates for communications with the UE, and may indicate the selected TRP candidates to the UE.

公开(公告)号：WO2020124004A1

公开(公告)日：2020-06-18

申请号：PCT/US2019/066328

申请日：2019-12-13

Applicant: QUALCOMM INCORPORATED

Inventor： JOHN WILSON, Makesh Pravin ,  LUO, Tao ,  KHOSHNEVISAN, Mostafa ,  ZHANG, Xiaoxia ,  SUN, Jing ,  CHANDE, Vinay ,  CHENDAMARAI KANNAN, Arumugam

IPC: H04W72/04

Abstract: Aspects described herein relate to communicating in a wireless network based on a configured set of one or more transmission points (TRPs), receiving an instruction to modify the set of one or more TRPs, modifying, based on the instruction, the set of one or more TRPs to generate a modified set of one or more TRPs, and communicating in the wireless network based on the modified set of one or more TRPs.