公开(公告)号：US11576160B2

公开(公告)日：2023-02-07

申请号：US16947797

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Seyed Ali Akbar Fakoorian ,  Zhifei Fan ,  Jing Sun

IPC: H04W72/04 ,  H04B1/713 ,  H04L5/00 ,  H04J13/00 ,  H04B1/707 ,  H04W16/14

Abstract: Wireless communications systems and methods related to multiplexing uplink control channel signals from different users are provided. A first wireless communication device obtains an uplink control channel multiplex configuration indicating a first frequency spreading sequence and at least one of a second frequency spreading sequence or a first spatial direction. The first wireless communication device communicates, with a second wireless communication device, a first uplink control channel signal including a first reference signal and a first uplink control information signal in a frequency spectrum based on the uplink control channel multiplex configuration. The first reference signal is based on the first frequency spreading sequence and the first uplink control information signal is based on at least one of the second frequency spreading sequence or the first spatial direction.

公开(公告)号：US11546890B2

公开(公告)日：2023-01-03

申请号：US17115613

申请日：2020-12-08

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Jun Ma ,  Zhifei Fan ,  Wooseok Nam ,  Iyab Issam Sakhnini ,  Tao Luo

IPC: H04W72/04 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described. Devices in a wireless communications system may support different configurations to support intra-symbol multiplexing for communications between the devices using a single carrier waveform. For example, the different configurations may include symbol level cyclic prefixes, device-specific or channel-specific cyclic prefixes, device-specific or channel-specific guard intervals, or a combination thereof to support the intra-symbol multiplexing. That is, the cyclic prefixes or guard intervals may separate different fractions of a symbol, such that individual signals communicated in each of the different fractions do not leak into a subsequent fraction to cause interference. In some implementations, the cyclic prefixes or guard intervals may be enabled for a subset of devices or channels. A configuration for this intra-symbol multiplexing with device-specific or channel-specific cyclic prefixes or guard intervals may be signaled in a control message to the corresponding devices.

公开(公告)号：US20220368581A1

公开(公告)日：2022-11-17

申请号：US17727378

申请日：2022-04-22

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Tianyang Bai ,  Tao Luo ,  Jing Sun

IPC: H04L27/26 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A device may precode a phase tracking reference signal (PTRS) sequence by applying a single discrete Fourier transform (DFT) to the PTRS sequence. The device may map the DFT precoded PTRS sequence to a subset of resources of a set of resources, and may transmit a signal carrying the DFT precoded PTRS sequence. Additionally or alternatively, the device may receive a signal that includes a DFT precoded PTRS sequence, demap the DFT precoded PTRS sequence to a subset of resources of a set of resources, decode the DFT precoded PTRS by applying a single inverse DFT (IDFT) to the DFT precoded PTRS sequence, estimate a phase error based on the decoding, and apply a phase error correction to a set of additional symbols associated with the signal based on the estimated phase error.

公开(公告)号：US11362770B2

公开(公告)日：2022-06-14

申请号：US16737258

申请日：2020-01-08

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Tao Luo ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Makesh Pravin John Wilson ,  Yan Zhou ,  Wooseok Nam

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14 ,  H04W74/08

Abstract: Wireless communications systems and methods related to providing feedback for DL data are provided. A first wireless communication device communicates with a second wireless communication device, a first communication signal. The first wireless communication device communicates the second wireless communication device, a grant for retransmitting a feedback associated with the first communication signal. The first wireless communication device communicates with the second wireless communication device, the feedback based on the grant.

公开(公告)号：US20220159707A1

公开(公告)日：2022-05-19

申请号：US17589521

申请日：2022-01-31

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Kapil Bhattad ,  Jing Sun ,  Tamer Kadous ,  Srinivas Yerramalli

IPC: H04W72/14 ,  H04L1/16 ,  H04L1/18 ,  H04L5/00 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a base station may communicate in an unlicensed spectrum (e.g., a shared radio frequency spectrum band). As such, the UE may determine a codebook size for transmitting hybrid access request (HARQ) acknowledgement (ACK) feedback with respect to the unlicensed spectrum. Accordingly, the UE may base the HARQ ACK codebook size on a number of HARQ processes with which the UE has been configured. Additionally or alternatively, the UE may base the HARQ ACK codebook size on a number and/or duration of downlink channel monitoring occasions indicated by the base station. In some cases, the UE may base the HARQ ACK codebook size on a combination of the techniques described herein.

公开(公告)号：US20220150851A1

公开(公告)日：2022-05-12

申请号：US17451994

申请日：2021-10-22

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Arumugam Chendamarai Kannan ,  Jun Ma ,  Tao Luo ,  Juan Montojo

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

Abstract: In one aspect, an extended SSB (ESSB) is provided that includes more than four symbols to facilitate UE reception of SSBs. In this aspect, the base station configures an ESSB comprising an SSB including four symbols and an initial symbol preceding the SSB. The base station transmits and the UE receives at least a portion of the ESSB. The UE processes the ESSB. Thus, higher capacity UEs can benefit from additional coding gain in the initial symbol while lower capacity UEs can switch beams to receive back-to-back ESSBs. In another aspect, a UE performs additional behaviors to receive SSBs. In this aspect, the UE receives a first SSB using a reception beam, and the UE determines to maintain the reception beam for a second SSB or to switch the reception beam during a PSS symbol of the second SSB. Thus, lower capacity UEs can also receive back-to-back SSBs.

公开(公告)号：US11229033B2

公开(公告)日：2022-01-18

申请号：US16855866

申请日：2020-04-22

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/08 ,  H04W24/08 ,  H04W72/04 ,  H04W76/27 ,  H04W56/00 ,  H04W80/02 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) in communication with a serving base station may identify that the UE is a potential victim of interference from a neighboring base station. The UE may transmit an interference coordination message to the neighboring base station. The interference coordination message may request modification of one or more transmission parameters at the neighboring base station. The neighboring base station may modify its transmission parameters to decrease interference with the UE, and the UE may communicate with the serving base station after transmitting the interference coordination message.

公开(公告)号：US20210321382A1

公开(公告)日：2021-10-14

申请号：US17225890

申请日：2021-04-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W8/22

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a beam switching capability for a subcarrier spacing for communications between the UE and a base station. In one example, the beam switching capability may indicate a quantity of beam switches for a plurality of slots of a transmission time interval. In another example, the capability may indicate a threshold quantity of symbol periods between beam switching operations associated with the subcarrier spacing, or a beam switching time for the subcarrier spacing, or both. The UE may determine, for the identified beam switching capability, one or more parameter values that indicate the identified beam switching capability. The parameters may explicitly or implicitly indicate the identified capability. The UE may also transmit the determined one or more parameter values to the base station and communicate with the base station according to the identified beam switching capability.

公开(公告)号：US11019504B2

公开(公告)日：2021-05-25

申请号：US16372917

申请日：2019-04-02

Applicant: QUALCOMM incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Jing Sun ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/26 ,  H04W74/08

Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.

公开(公告)号：US20200221446A1

公开(公告)日：2020-07-09

申请号：US16719133

申请日：2019-12-18

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Zhifei Fan ,  Tao Luo ,  Yan Zhou ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/04 ,  H04W74/08

Abstract: A base station may access a channel following a successful channel access procedure. The base station may transmit an indication of a resource allocation to a user equipment (UE). The resource allocation may include an allocation of resources for subsequent communications between the base station and the UE, for example, defining a set of transmission time intervals (TTIs) during which the UE may transmit repetitions of uplink control information. The UE may also perform a channel access procedure to access the channel. The UE may transmit repetitions of the uplink control information using the set of TTIs according to the resource configuration. In some cases, the UE may stop transmitting uplink control information repetitions after a maximum number repetitions also according to the resource configuration. The base station may then receive and combine the uplink control information.