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公开(公告)号：US11064439B2
公开(公告)日：2021-07-13
申请号：US16153166
申请日：2018-10-05
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Rahul Malik , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communications are described that asynchronous carrier aggregation, including between high frequency band and lower frequency band transmissions. A user equipment (UE) may be configured to monitor transmissions in a first frequency band and a second frequency band. The UE may measure a timing difference between transmissions in the first frequency band and one or more of the transmissions in the second frequency band, and transmit an indication of the timing difference to a base station. The base station may use the timing difference to determine whether the UE is to use asynchronous carrier aggregation. If the base station determines that the UE is to use asynchronous carrier aggregation, the base station may configure the UE to observe at least a minimum amount of delay when conducting uplink signaling via one of the frequency bands.
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公开(公告)号：US11057885B2
公开(公告)日：2021-07-06
申请号：US16391001
申请日：2019-04-22
Applicant: QUALCOMM incorporated
Inventor： Srinivas Yerramalli , Jing Sun , Xiaoxia Zhang , Tamer Kadous , Yongbin Wei
Abstract: Methods, systems, and devices for wireless communications are described that provide for frame-based initiator device operations. A wireless device may be operating within a frame-based equipment communications system, where a frame may include a channel occupancy time period and a minimum idle period. An initiating device may be configured to initiate autonomous uplink communications during the channel occupancy time period of its frame, while the device may not initiate communications during an idle period of its frame. In some cases, a frame-based equipment communications system may include more than one initiating device, where the idle periods for different initiating devices may occur at different times. In some cases, the initiating device may be configured to initiate communications during the idle period for another initiating device. This may allow the wireless system to decrease system overhead associated with a minimum idle period per frame.
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公开(公告)号：US20210204326A1
公开(公告)日：2021-07-01
申请号：US17127632
申请日：2020-12-18
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxia Zhang , Jing Sun , Zhifei Fan , Arumugam Chendamarai Kannan , Srinivas Yerramalli , Wooseok Nam , Tao Luo , Sungwoo Park
Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a random access configuration for the UE, the random access configuration indicating a subcarrier spacing for random access preambles of a random access procedure and a periodicity of slots including random access channel occasions for transmission of the random access preambles, where the periodicity of the slots is based on the subcarrier spacing for the random access preambles, determining a random access radio network temporary identifier based on the periodicity of the slots and a slot index for a slot in which the UE is to transmit a random access preamble, and transmitting, in the slot, the random access preamble indicating the determined random access radio network temporary identifier.
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714.发明授权公开(公告)号：US11051263B2
公开(公告)日：2021-06-29
申请号：US15989698
申请日：2018-05-25
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Arumugam Chendamarai Kannan , Chih-Hao Liu , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization may be generated by applying a first phase shift to the first synchronization sequence.
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公开(公告)号：US11050531B2
公开(公告)日：2021-06-29
申请号：US16394518
申请日：2019-04-25
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Srinivas Yerramalli , Tamer Kadous , Yongbin Wei
Abstract: Wireless communications systems and methods related to providing frequency diversity for communications in an unlicensed spectrum are provided. A first wireless communication device communicates, with a second wireless communication device, an opportunistic frequency-switching configuration for a first frequency band and a second frequency band. The first frequency band and the second frequency band are shared by a first network operating entity and a second network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device switches from the first frequency band to a second frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device communicates, with the second wireless communication device after the switching, a second communication signal in the second frequency band based on the opportunistic frequency-switching configuration.
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Patent Agency Ranking
公开(公告)号：US20210184740A1
公开(公告)日：2021-06-17
申请号：US17187500
申请日：2021-02-26
Applicant: QUALCOMM Incorporated
Inventor： Makesh Pravin John Wilson , Srinivas Yerramalli , Tao Luo , Sumeeth Nagaraja , Sony Akkarakaran
Abstract: Methods, systems, and devices for wireless communications are described techniques provide for the identification of a sequence of beamforming parameters that are used for communications between a user equipment (UE) and a base station using a sequence of transmission beams. A UE may measure received reference signals that are transmitted in a series of downlink transmission beams from a base station, and report measurement parameters associated with the downlink transmission beams to the base station as part of a beam tracking and beam refinement procedure. The base station may provide transmission configuration indicator (TCI) states that are associated with each transmission beam. The TCI states may be recorded over a course of a periodic movement of the UE, and may be used deterministically to identify beamforming parameters for transmission and reception of a subsequent series of downlink transmission beams when the UE makes a subsequent same periodic movement.
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公开(公告)号：US11025296B2
公开(公告)日：2021-06-01
申请号：US16255645
申请日：2019-01-23
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Srinivas Yerramalli , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.
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公开(公告)号：US10966242B2
公开(公告)日：2021-03-30
申请号：US16390495
申请日：2019-04-22
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Shimman Arvind Patel , Wanshi Chen , Naga Bhushan , Yongbin Wei , Hao Xu , Aleksandar Damnjanovic , Tingfang Ji , Durga Prasad Malladi , Srinivas Yerramalli , Peter Gaal
Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.
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公开(公告)号：US10939441B2
公开(公告)日：2021-03-02
申请号：US16258938
申请日：2019-01-28
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Jing Sun , Xiaoxia Zhang , Yongbin Wei , Tamer Kadous , Srinivas Yerramalli , Tao Luo
IPC: H04W36/30 , H04W72/04 , H04W76/11 , H04W24/08 , H04L1/00 , H04W76/27 , H04L5/00 , H04W74/08 , H04W74/00 , H04B7/08 , H04B7/06
Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.
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公开(公告)号：US10863524B2
公开(公告)日：2020-12-08
申请号：US16373047
申请日：2019-04-02
Applicant: QUALCOMM Incorporated
Inventor： Seyed Ali Akbar Fakoorian , Jing Sun , Xiaoxia Zhang , Srinivas Yerramalli , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communications are described. In systems supporting multiple communication protocol types (e.g., ultra-reliable low-latency communication and enhance mobile broadband communication), a user equipment may implement multiplexing rules for handling overlapping transmissions of different communication protocols. For example, if lower latency data supports multiplexing with higher latency data and a lower latency resource overlaps (either partially or completely) with a higher latency resource, a number of options can be taken to control multiplexing. Similarly, if low latency uplink control information supports multiplexing with a slot-based physical uplink shared channel, and the physical uplink shared channel has its own uplink control information, a number of options can be taken to control multiplexing. If slot-based uplink control information overlaps (either partially or completely) with low latency data, then, likewise, a number of options can be taken to control multiplexing. Controlling multiplexing may support meeting low latency thresholds.
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