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公开(公告)号：US11601253B2
公开(公告)日：2023-03-07
申请号：US16951665
申请日：2020-11-18
Applicant: QUALCOMM Incorporated
Inventor： Akula Reddy , Jing Sun , Tao Luo , Xiaoxia Zhang , Srinivas Yerramalli , Ahmed Abdelaziz Ibrahim Abdelaziz Zewail , Zhifei Fan , Sungwoo Park , Wooseok Nam
Abstract: A wireless communication system utilizes a synchronization signal block (SSB) structure to enable beam switching at higher sub carrier spacing (SCS) or uplink transmissions within an SSB. The SSB structure has a first SCS for an SSB transmission and a second SCS for a data transmission. The SSB structure is based on the first SCS and the second SCS, with the SSB structure including at least one gap between SSB symbols or between SSBs. The wireless communication system transmits or receives an SSB based on the SSB structure. A base station may transmit a downlink signal during the gap, for example, where the second SCS is much greater than the first SCS. A user equipment may transmit an uplink signal such as an acknowledgment during the at least one gap. The user equipment or the base station may perform analog beam switching during the at least one gap between SSBs.
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公开(公告)号：US11477760B2
公开(公告)日：2022-10-18
申请号：US17102956
申请日：2020-11-24
Applicant: QUALCOMM Incorporated
Inventor： Tianyang Bai , Junyi Li , Sungwoo Park , Wooseok Nam , Tao Luo
Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications networks may implement aspects of a single frequency network (SFN), which may support multicast and broadcast transmissions. In some cases, a base station may use directional beamforming techniques to transmit a message to a user equipment (UE) using a first frequency configuration of the SFN. The base station may adjust the first frequency configuration to a second frequency configuration, and may transmit a retransmission of the message to the UE using the second frequency configuration.
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公开(公告)号：US11412527B2
公开(公告)日：2022-08-09
申请号：US16915259
申请日：2020-06-29
Applicant: QUALCOMM Incorporated
Inventor： Sungwoo Park , Arumugam Chendamarai Kannan , Tao Luo , Srinivas Yerramalli , Vinay Chande , Mostafa Khoshnevisan , Jing Sun , Xiaoxia Zhang , Wooseok Nam
IPC: H04W72/12 , H04L27/26 , H04B7/06 , H04L41/0803
Abstract: Methods, systems, and devices for wireless communications are described. In some systems implementing beamforming, a neighboring base station may cause interference to a user equipment (UE) served by a different base station. To mitigate unexpected interference, an interference coordination region including time and frequency resources may be configured between the base stations. The interference coordination region may be configured based on long-term information for the base stations and may include one or both of a set of beam-avoidance sub-regions or a set of beam-preference sub-regions for a base station, where each sub-region is associated with a beam index. A base station may schedule a communication beam in the interference coordination region based on a beam-avoidance region (e.g., refraining from using a particular communication beam) or a beam-preference region (e.g., prioritizing a particular communication beam). The base station may transmit a message to a UE using the scheduled communication beam.
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公开(公告)号：US11265097B2
公开(公告)日：2022-03-01
申请号：US16802229
申请日：2020-02-26
Applicant: QUALCOMM Incorporated
Inventor： Sungwoo Park , Mostafa Khoshnevisan , Xiaoxia Zhang , Tao Luo , Jing Sun , Wooseok Nam
Abstract: Methods, systems, and devices for wireless communications are described. A first transmission/reception point (TRP) may coordinate with a second transmission/reception point to configure code division multiplexing group hopping for a user equipment (UE). The first TRP may transmit a signal to the UE indicating that code division multiplexing group hopping is enabled for the first transmission/reception point and the second transmission/reception point. The first TRP may transmit, during a first instance of the code division multiplexing group hopping, a first reference signal to the UE according to a first code division multiplexing group. The first TRP may transmit, during a second instance of the code division multiplexing group hopping, the first reference signal to the UE according to a second code division multiplexing group.
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公开(公告)号：US11251849B2
公开(公告)日：2022-02-15
申请号：US16991782
申请日：2020-08-12
Applicant: QUALCOMM Incorporated
Inventor： Sungwoo Park , Kiran Venugopal , Tianyang Bai , Wooseok Nam , Tao Luo
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.
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Patent Agency Ranking
公开(公告)号：US11240836B2
公开(公告)日：2022-02-01
申请号：US16987224
申请日：2020-08-06
Applicant: QUALCOMM Incorporated
Inventor： Mostafa Khoshnevisan , Tao Luo , Xiaoxia Zhang , Arumugam Chendamarai Kannan , Sungwoo Park
Abstract: Certain aspects of the present disclosure provide techniques for making multi-transmission configuration indicator (TCI) state data scheduling more reliable. A method that may be performed by a user equipment (UE) includes receiving, from a base station (BS), a first signal indicative of a plurality of demodulation reference signal (DMRS) ports. The method may also include receiving, from the BS, a second signal indicative of a first spatial state of a physical channel and a second spatial state of the physical channel. The method may also include communicating data over the second subset and not the first subset, based on which of the plurality of DMRS ports are part of the first subset and which of the plurality of DMRS ports are part of the second subset.
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公开(公告)号：US11240831B2
公开(公告)日：2022-02-01
申请号：US16785949
申请日：2020-02-10
Applicant: QUALCOMM Incorporated
Inventor： Sungwoo Park , Mostafa Khoshnevisan , Xiaoxia Zhang , Tao Luo , Jing Sun , Wooseok Nam
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use one or more antenna subarrays to perform a scheduling request (SR) operation with one or more corresponding transmission reception points (TRPs) while operating in a connected discontinuous reception mode. In some implementations, the UE may receive a configuration indicating a set of its antenna subarrays and a corresponding set of the TRPs with which to perform the SR operation. Based on this configuration, the UE may transmit an SR to the set of TRPs using the set of its antenna subarrays, receive an uplink grant from at least one TRP of the set of TRPs, and transmit uplink data to the at least one TRP. Additionally or alternatively, the UE may determine the sets of antenna elements and TRPs for the SR operation autonomously and transmit an indication of this determination when transmitting the SR.
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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
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.
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公开(公告)号：US11219070B2
公开(公告)日：2022-01-04
申请号：US16795281
申请日：2020-02-19
Applicant: QUALCOMM Incorporated
Inventor： Sungwoo Park , Makesh Pravin John Wilson , Vinay Chande , Tao Luo , Jing Sun , Xiaoxia Zhang , Arumugam Chendamarai Kannan , Wooseok Nam
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select a random access channel (RACH) signature from among one or more RACH signatures associated with a synchronization signal block (SSB). The UE may transmit, to a base station (BS), a RACH communication using the selected RACH signature. Numerous other aspects are provided.
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公开(公告)号：US20210392593A1
公开(公告)日：2021-12-16
申请号：US17347259
申请日：2021-06-14
Applicant: QUALCOMM Incorporated
Inventor： Anantha Krishna Karthik Nagarajan , Jun Ma , Tao Luo , Peter Gaal , Qiang Wu , Xiaoxia Zhang , Jing Sun , Mehmet Izzet Gurelli , Iyab Issam Sakhnini , Ahmed Abdelaziz Ibrahim Abdelaziz Zewail , Juan Montojo , Sungwoo Park
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration of a set of synchronization signal blocks (SSBs) to be transmitted by a first base station or a second base station. In some cases, the UE may be served by the first base station and the UE may receive, from the first base station or the second base station, a message indicating that a transmission of at least one SSB of the set of SSBs is canceled and indicating resources for a signal (e.g., a reference signal, alternative SSB transmission) to be transmitted by the first base station or the second base station as an alternative to the canceled at least one SSB. The UE may receive, based on the received message from the first base station or the second base station, the signal using the indicated resources.
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