公开(公告)号：US11277185B2

公开(公告)日：2022-03-15

申请号：US16867443

申请日：2020-05-05

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04L27/26 ,  H04B7/0456

Abstract: Certain aspects of the present disclosure provide techniques for multiple beam downlink data transmission while indicating only a single transmission configuration indicator (TCI) state. A method that may be performed by a user equipment (UE) includes receiving a single TCI state from a base station (BS). The UE determines one or more UE receive beams based, at least in part, on the TCI state. The UE receives a multi-beam data transmission from the BS using the determined one or more UE receive beams.

公开(公告)号：US20220015100A1

公开(公告)日：2022-01-13

申请号：US17357342

申请日：2021-06-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Vasanthan Raghavan ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Junyi Li ,  Giovanni Chisci ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Sungwoo Park

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/08 ,  H04L27/26 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. To support a reliable array response for wideband communications, a base station may configure a set of transmission instances for a set of signals distributed across a wideband carrier bandwidth. At least one transmission instance of the set of transmission instances may be configured in each sub-band of the carrier bandwidth. The base station may transmit the set of signals in the configured transmission instances to a user equipment (UE). The UE may receive the set of signals distributed across the carrier bandwidth and may measure, for the signals, a set of signal measurements corresponding to the set of sub-bands. Based on the signal measurements, the UE may determine a set of communication beams for the set of sub-bands. Using one or more of the determined communication beams, the UE may communicate with the base station in the carrier bandwidth.

公开(公告)号：US20210368477A1

公开(公告)日：2021-11-25

申请号：US17236390

申请日：2021-04-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/02 ,  H04W72/08 ,  H04W72/04 ,  H04B7/06 ,  H04W56/00 ,  H04B7/0456

Abstract: Frequency-selective single frequency network (SFN) operation is disclosed based on a modified Type-II port selection codebook. Within the channel state information (CSI) feedback procedure, a user equipment (UE) observing the CSI-reference signal (CSI-RS) resource configured by the serving base station with two ports configured over multiple sectors of the serving base station may select a precoder from the Type-II port selection codebook which accommodates additional subband amplitude information. The additional subband amplitude information may include a subband dynamic SFN activation indicator. In such a CSI report selected from the Type-II port selection codebook, the UE may indicate to the serving base station both a wideband SFN activation/deactivation and a subband SFN activation/deactivation in addition to the subband phase information. The serving base station may then use this CSI report to activate/deactivate SFN operations in both wideband and subband over each of the participating sectors.

公开(公告)号：US11128426B2

公开(公告)日：2021-09-21

申请号：US16839640

申请日：2020-04-03

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  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).

公开(公告)号：US20210226820A1

公开(公告)日：2021-07-22

申请号：US17118958

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04L25/02 ,  H04W72/04 ,  H04B7/26

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a base station may transmit to a user equipment (UE) over a control channel (e.g., a downlink control channel) and the UE may monitor for the control channel in a control resource set (COREST). The control channel and the CORESET may be associated with a set of transmission configuration indicator (TCI) states. The base station and the UE may identify an association between the resources of the CORESET and the set of TCI states based on a frequency division multiplexing (FDM) mapping between the resources of the CORESET and the set of TCI states. In some examples, the association may be a fixed rule at the UE. In other examples, the base station may signal the association to the UE via control signaling. The UE may decode the control channel based on the FDM mapping.

公开(公告)号：US20210226754A1

公开(公告)日：2021-07-22

申请号：US17119162

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A control resource set (CORESET) may be configured to support multiple transmission configuration indicator (TCI) state control channels. Space division multiplexing (SDM) may be implemented to enable multi-TCI states by using multiple ports and layers. A certain layer and demodulation reference signal (DMRS) port may be associated with a certain TCI state. For orthogonal ports, resources elements (REs) may be assigned such that a first set of REs are assigned to the first DMRS port and a second set of REs are assigned to the second port. The multiple DMRS ports may be code division multiplexed (CDM'd) within an RE such that multiple DMRS ports may be associated with the same RE. For non-orthogonal ports, the same RE may be used for multiple TCI states, where scrambling sequences may be applied to DMRSs associated with the TCI states.

公开(公告)号：US20210135918A1

公开(公告)日：2021-05-06

申请号：US17082603

申请日：2020-10-28

Applicant: QUALCOMM Incorporated

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

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

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may identify, for an initial slot of a periodic interval, a number of symbols included in the initial slot and a length of cyclic prefixes used for the symbols included in the initial slot based on a subcarrier spacing that is configured for wireless communication. The length of a first set of cyclic prefixes may be based on a length of a cyclic prefix calculated for an initial symbol of the initial slot at the configured subcarrier spacing. The wireless device may perform communications based on the determined number of symbols and length of cyclic prefixes included in the initial slot. Performing communications may include allocating resources based on a length of the cyclic prefixes used for the symbols included in the initial slot.

公开(公告)号：US20210119758A1

公开(公告)日：2021-04-22

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 ,  Snnivas Yerramalli

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

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：US20210050892A1

公开(公告)日：2021-02-18

申请号：US16991782

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A first device may transmit, to a second device, reference signals using combinations of analog beamforming parameters over multiple cycles. The reference signals may be transmitted for different combinations of transmit beamforming parameters and receive beamforming parameters over different cycles of the multiple cycles. The first device may receive, from the second device over the multiple cycles, a set of reports. Each report may indicate combinations of analog beamforming parameters selected for the analog beamforming parameters at the second device. Each combination of analog beamforming parameters may correspond to different cycles of the multiple cycles. The first device may set, for each radio frequency (RF) chain of a plurality of RF chains associated with the first device, a corresponding combination of analog beamforming parameters, and communicate with the second device via two or more beams based on the setting.

公开(公告)号：US20200296700A1

公开(公告)日：2020-09-17

申请号：US16802332

申请日：2020-02-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/18 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may operate in a multi-transmission/reception point (TRP) mode, where the multi-TRP mode includes monitoring a plurality of control channels and where each of the plurality of control channels may be associated with a TRP. The UE may operate in a first control channel monitoring state of the multi-TRP mode, where the UE may be configured to monitor a first control channel of a first TRP. The UE may identify an indication to switch from the first control channel monitoring state to a second control channel monitoring state of the multi-TRP mode. The UE may switch, based on the indication, to the second control channel monitoring state, where the UE may be configured to monitor the first control channel of the first TRP and monitor a second control channel of the second TRP.