公开(公告)号：US11502811B2

公开(公告)日：2022-11-15

申请号：US17019978

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Jing Sun ,  Wooseok Nam ,  Tao Luo ,  Xiaoxia Zhang ,  Zhifei Fan ,  Akula Reddy ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Srinivas Yerramalli

IPC: H04L12/28 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04

Abstract: Subcarrier spacing (SCS) for data may be adapted or dynamically configured based on the occurrence or presence of a synchronization signal block (SSB) transmission. For example, during a SSB transmission, the SCS of data may be automatically switched from some default data SCS to a second SCS (e.g., the SCS of the SSB) to allow for frequency division multiplexing (FDM) of data and SSB where the data and SSB use the same numerology. As such, communicating devices (e.g., a base station and a user equipment (UE)) may identify some location or configuration for a SSB, and may determine a second subcarrier spacing (e.g., a subcarrier spacing associated with the SSB) such that the SCS of data may be adapted to the second subcarrier spacing during the FDM of the SSB and the data. The SSB and data may thus be contemporaneously transmitted or received using the second SCS.

公开(公告)号：US11456790B2

公开(公告)日：2022-09-27

申请号：US16991808

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Kiran Venugopal ,  Tianyang Bai ,  Wooseok Nam ,  Tao Luo

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0417 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described for multiple-input multiple-output (MIMO) millimeter wave (mmW) communications of two or more MIMO streams via two or more beams. A sequential technique may be used for configuring MIMO communications, in which analog RF beamforming parameters are determined based on reference signal measurements during a beam sweeping procedure. Then, digital baseband beamforming parameters may be determined and used for baseband processing of two or more MIMO streams. The digital baseband beamforming parameters may include baseband precoding parameters used for transmitting the two or more MIMO streams on the two or more beams, and baseband combiner parameters used for receiving the two or more MIMO streams on the two or more beams.

公开(公告)号：US11419104B2

公开(公告)日：2022-08-16

申请号：US16735431

申请日：2020-01-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Makesh Pravin John Wilson ,  Tao Luo ,  Jing Sun ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Mostafa Khoshnevisan

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmit receive point (TRP), a downlink control information (DCI) communication, the UE being included in a multi-TRP configuration with the first TRP and a second TRP. The UE may determine information unique to the first TRP. The information unique to the first TRP may be at least one of associated with the DCI communication or included in the DCI communication. The UE may generate a downlink scrambling sequence initialization code, associated with the first TRP, based at least in part on the information unique to the first TRP. The UE may generate a downlink scrambling sequence, associated with the first TRP, based at least in part on the downlink scrambling sequence initialization code associated with the first TRP. Numerous other aspects are provided.

公开(公告)号：US11418306B2

公开(公告)日：2022-08-16

申请号：US17167917

申请日：2021-02-04

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Mostafa Khoshnevisan ,  Tao Luo ,  Jing Sun ,  Xiaoxia Zhang ,  Sungwoo Park

IPC: H04L5/00 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for channel state information reference signal (CSI-RS) for multiple beam transmissions. In an example, a first CSI-RS triggering state of one or more CSI-RS triggering states indicates a CSI-RS resource set and associated transmission configuration indication (TCI) states. The CSI-RS resource set includes a plurality of CSI-RS resources. Each CSI-RS resource of the plurality of CSI-RS resources is associated with one or more corresponding TCI states as indicated by the first CSI-RS triggering state. A first CSI-RS resource of the plurality of CSI-RS resources is associated with a first plurality of TCI states as indicated by the first CSI-RS triggering state.

公开(公告)号：US11337266B2

公开(公告)日：2022-05-17

申请号：US16885070

申请日：2020-05-27

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tao Luo ,  Linhai He ,  Ozcan Ozturk ,  Arumugam Chendamarai Kannan ,  Sungwoo Park ,  Mostafa Khoshnevisan ,  Jing Sun

IPC: H04W76/18 ,  H04B7/0456 ,  H04B7/06 ,  H04W56/00 ,  H04W76/19 ,  H04W76/27 ,  H04W76/15 ,  H04W24/08 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for performing radio link monitoring (RLM) and radio link failure procedures in multiple-TRP (mTRP) communications, wherein the first TRP is part of a first cell group comprising the first TRP and one or more additional TRPs. The techniques include a method of wireless communication by a user equipment (UE), comprising establishing a plurality of radio links between the UE and a first transmission reception point (TRP) and a second TRP, determining an RLM resource of a first radio link of the plurality of radio links, monitoring the first radio link according to the determined RLM resource, detecting an RLF of the first radio link, determining that the first TRP is associated with the RLF of the first radio link based on the RLM resource of the first radio link, and transmitting an RLF notification indicating the RLF of the first radio link.

公开(公告)号：US11330617B2

公开(公告)日：2022-05-10

申请号：US16855347

申请日：2020-04-22

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Xiaoxia Zhang ,  Mostafa Khoshnevisan ,  Tao Luo ,  Jing Sun ,  Arumugam Chendamarai Kannan

IPC: H04W72/12 ,  H04W72/04

Abstract: A configuration is disclosed to enable a UE to determine and/or prepare Rx beams prior to downlink reception in multi-TRP operation. The apparatus sends, to a first TRP, a report indicating a plurality of threshold scheduled offsets. Each threshold scheduled offset associated with a different number of TCI states. The apparatus receives, from the first TRP, DCI including a TCI and a time-offset. The TCI comprising at least one TCI state. Each TCI state indicating a Tx beam for a TRP of a set of TRPs. The set of TRPs including the first TRP. The apparatus determines at least one Rx beam based on at least one of the received TCI, the time-offset, or one or more of the plurality of threshold scheduled offsets. The apparatus receives, based on the received time-offset, a PDSCH from each TRP of the set of TRPs through the determined at least one Rx beam.

公开(公告)号：US11297613B2

公开(公告)日：2022-04-05

申请号：US16746304

申请日：2020-01-17

Applicant: QUALCOMM incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Makesh Pravin John Wilson ,  Sungwoo Park ,  Wooseok Nam

IPC: H04W72/04 ,  H04W74/08 ,  H04B7/08 ,  H04B7/06 ,  H04W48/08

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently identifying a receive beam for performing a listen before talk (LBT) procedure in an attempt to gain access to a transmission opportunity (TxOP) in a shared radio frequency spectrum. In particular, a wireless device may select a receive beam that corresponds to one or more transmit beams to be used in a TxOP to perform an LBT procedure in an attempt to gain access to the TxOP. In one example, the wireless device may select a receive beam for performing an LBT procedure based on the energy of each of the transmit beams to be used in a TxOP. In another example, the wireless device may select a receive beam for performing an LBT procedure if the receive beam is quasi co-located with each of the transmit beams to be used in a TxOP.

公开(公告)号：US11240688B2

公开(公告)日：2022-02-01

申请号：US16893270

申请日：2020-06-04

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Tao Luo ,  Xiaoxia Zhang ,  Jing Sun ,  Srinivas Yerramalli ,  Vinay Chande ,  Olufunmilola Omolade Awoniyi-Oteri ,  Sony Akkarakaran ,  Mostafa Khoshnevisan ,  Zhifei Fan ,  Kaushik Chakraborty

IPC: H04W24/02 ,  H04W72/12 ,  H04B17/336

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：US20210352631A1

公开(公告)日：2021-11-11

申请号：US16868330

申请日：2020-05-06

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Srinivas Yerramalli ,  Wooseok Nam ,  Sungwoo Park ,  Arumugam Chendamarai Kannan

IPC: H04W72/04 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W76/11

Abstract: A base station transmits a first downlink control information (DCI) portion in a physical downlink control channel (PDCCH), wherein the first DCI portion indicates a second DCI portion. The base station jointly encodes multiple component DCIs, each of the component DCIs providing a resource allocation in combination with the first DCI portion. The apparatus transmits the second DCI portion comprising the jointly encoded multiple component DCIs in a physical downlink shared channel (PDSCH).

公开(公告)号：US20210321383A1

公开(公告)日：2021-10-14

申请号：US17225893

申请日：2021-04-08

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Jing Sun ,  Xiaoxia Zhang ,  Zhifei Fan ,  Juan Montojo ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Sungwoo Park

IPC: H04W72/04 ,  H04W8/22

Abstract: Methods, systems, and devices for wireless communications are described. A device such as a user equipment (UE) or a base station may identify a beam switching capability of the UE, the beam switching capability indicating a threshold quantity of beam switches during a transmission time interval, a threshold quantity of symbol periods between beam switching operations, or a combination thereof. The device may determine that the beam switching capability of the UE is satisfied based at least in part on one or more parameters (e.g., one or more symbol period durations, one or more quantities of beam switches during a transmission time interval, one or more adjustment parameters, one or more threshold values associated with the capability of the UE, etc.). The device may perform one or more beam switching operations based on determining that the beam switching capability is satisfied.