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21.发明授权公开(公告)号：US11044735B2
公开(公告)日：2021-06-22
申请号：US16721705
申请日：2019-12-19
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Tao Luo , Jing Sun , Rahul Malik , Tamer Kadous , Akula Reddy
Abstract: Aspects of the disclosure relate to methods and apparatus of wireless communication to support frequency division multiplexing (FDM) of multiple waveforms. The methods and apparatus schedule FDM symbols where the scheduling of the FDM symbols is selectively based on one or more waveform parameters during a time interval when the FDM symbols are transmitted. The FDM symbols are then transmitted over the time interval. Further aspects also include the reception of the FDM symbols in a receiver where the waveform parameters are applied for decoding based on application of the waveform parameters.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US10897326B2
公开(公告)日：2021-01-19
申请号：US15934745
申请日：2018-03-23
Applicant: QUALCOMM Incorporated
Inventor： Akula Reddy , Jing Sun , Tao Luo , Sony Akkarakaran , Rahul Malik , Tamer Kadous
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a coreset of time and frequency resources within a control region of a coreset bandwidth. In one aspect, the coreset bandwidth may be based on a minimum bandwidth configuration associated with one or more UEs in a set of UEs. The apparatus may also transmit a PDCCH as a single-carrier waveform via the coreset of time and frequency resources. In one aspect, the PDCCH may be transmitted to each UE in the set of UEs using the coreset bandwidth.
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公开(公告)号：US10667244B2
公开(公告)日：2020-05-26
申请号：US15726229
申请日：2017-10-05
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Jing Sun , Sony Akkarakaran , Tamer Kadous , Xiao feng Wang , Akula Reddy
Abstract: When a base station is capable of using multiple different types of waveforms for a downlink communication to a UE, the UE may waste processing resources attempting to receive and/or process the downlink communication. For example, the UE may cycle through various possible types of waveforms in an attempt to process the downlink communication. Techniques described herein use waveform signaling for downlink communications to notify the UE of a type of waveform being used for a downlink communication, thereby conserving UE resources (e.g., processing resources, memory resources, RF resources, and/or the like) that would otherwise be wasted attempting to process the downlink communication using multiple types of waveforms.
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公开(公告)号：US20180288747A1
公开(公告)日：2018-10-04
申请号：US15898987
申请日：2018-02-19
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tao Luo , Sony Akkarakaran , Rahul Malik , Tamer Kadous , Akula Reddy
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify control information to be transmitted, in a slot, to a user equipment (UE). The base station may determine a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE. The first component control resource set may be frequency diverse and time diverse from the second component control resource set. The base station may transmit the configuration to the UE.
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公开(公告)号：US20180287840A1
公开(公告)日：2018-10-04
申请号：US15936311
申请日：2018-03-26
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Tao Luo , Jing Sun , Rahul Malik , Tamer Kadous , Akula Reddy
Abstract: Aspects of the disclosure relate to synchronization signaling supporting multiple waveforms. A synchronization signal block (SSB) is configurable for transmission using either at least a first waveform or a second waveform, where the first waveform has higher peak to average power ratio (PAPR) characteristics such as OFDM and the second waveform has lower PAPR characteristics, such as DFT-S-OFDM. The SSB is transmitted selectively using either the first waveform or the second waveform for transmission of the SSB. Furthermore, the characteristics of the transmission such as a predetermined pattern of the first and second waveform transmissions may be utilized to communicate to a receiver the type of waveform being used. In this manner, SSB transmissions may take advantage of respective advantages afforded by each type of waveform, particularly when using higher frequency transmissions above 40 GHz in wireless communication systems.
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公开(公告)号：US20180124820A1
公开(公告)日：2018-05-03
申请号：US15801150
申请日：2017-11-01
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tamer Kadous , Juan Montojo , Peter Pui Lok Ang , Xiaoxia Zhang , Taesang Yoo , Ahmed Kamel Sadek , Sanaz Barghi , Akula Reddy , Andrei Dragos Radulescu , Junyi Li
CPC classification number: H04W72/14 , H04B7/0695 , H04B7/088 , H04L5/001 , H04L5/0048 , H04W8/08 , H04W72/0413 , H04W72/044 , H04W74/08 , H04W74/0816 , H04W88/02 , H04W88/08
Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, using a first base station beam, a first message to a user equipment (UE). The first message may include a pre-grant communication and a plurality of downlink beam refinement reference signals (D-BRRSs). The base station may receive a second message from the UE in response to the first message. The second message may include a pre-grant acknowledgement and a plurality of uplink beam refinement reference signals (U-BRRSs). The base station may transmit, using a second base station beam, a third message to the UE. A width of the second base station beam may be less than a width of the first base station beam.
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