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公开(公告)号：US20200059916A1
公开(公告)日：2020-02-20
申请号：US16515765
申请日：2019-07-18
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Xiaoxia Zhang , Kapil Bhattad
Abstract: Design of control resource sets (CORESETs) is disclosed for new radio (NR) unlicensed (NR-U) operations with subband access. A default CORESET may be defined for multiple or all subbands within the allocated NR system bandwidth where each subband is covered by a sub-CORESET. When a decoding candidate of the set of decoding candidates spans the boundary of multiple sub-CORESETs, a base station may either remove the overlapping decoding candidate from the set of decoding candidates, shift the decoding candidate into the next location fully within a sub-CORESET, or continue transmission of the decoding candidate while puncturing the portion on the inaccessible subband. In the puncturing option, a user equipment (UE) would perform additional blind decoding in each subband according to the associated sub-CORESET. In additional aspects, after beginning of a transmission opportunity, the UE uses the knowledge of accessible subbands for fast CORESET switching via broadcast or UE-specific signaling.
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862.发明授权公开(公告)号：US10511399B2
公开(公告)日：2019-12-17
申请号：US15873441
申请日：2018-01-17
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tao Luo , Tamer Kadous , Juan Montojo , Xiao feng Wang , Sony Akkarakaran
Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.
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公开(公告)号：US10476781B2
公开(公告)日：2019-11-12
申请号：US15659592
申请日：2017-07-25
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Juan Montojo , Tamer Kadous , Junyi Li , Xiaoxia Zhang , Jing Sun , Taesang Yoo , Siddhartha Mallik
IPC: H04L12/761 , H04L12/18 , H03M13/09 , H04B17/318 , H04B17/24 , H04W52/54 , H04W52/34 , H04W52/24 , H04B7/06 , H04W72/12 , H04W76/22 , H04L12/24 , H04W72/04 , H04W52/56 , H04W52/14 , H04W52/16 , H04W52/38 , H04W52/42 , H04W52/50 , H04B7/216 , H04L5/00 , H04W72/08 , H04W24/08 , H04W24/02 , H04W76/19 , H04W24/04 , H04W48/08 , H04W92/20 , H04L1/18 , H04L1/00
Abstract: Various aspects of the disclosure relate to feedback for independent links. For example, channel state feedback may be based on the channel state of multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). In some scenarios, channel state information (CSI) feedback may take into account the CSI-reference signals (CSI-RSs) from multiple links. For example, CSI feedback may be based on CSI-RSs from multiple links if the antenna sub-arrays for the links are close to one another. As another example, a decision as to whether CSI feedback is to be based on CSI-RSs from multiple links may depend on channel conditions.
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公开(公告)号：US20190341990A1
公开(公告)日：2019-11-07
申请号：US16512229
申请日：2019-07-15
Applicant: Qualcomm Incorporated
Inventor： Makesh Pravin John Wilson , Tao Luo , Jing Sun , Andrei Dragos Radulescu , Aleksandar Damnjanovic , Arumugam Chendamarai Kannan
IPC: H04B7/06
Abstract: Methods, systems, and devices for wireless communication are described that support overriding a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment and a base station. A base station may select a beam monitoring pattern for transmitting control channel transmissions, which may include a pattern in which two or more beams are used for control channel transmissions. In the event that a first beam of the beams used in the beam monitoring pattern meets certain metrics, the use of one or more additional beams according to the beam monitoring pattern may be overridden and transmissions continued using the first beam. The metrics for continuing use of the first beam may include channel quality metrics, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.
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公开(公告)号：US20190335427A1
公开(公告)日：2019-10-31
申请号：US16385897
申请日：2019-04-16
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Xiaoxia Zhang , Srinivas Yerramalli , Yongbin Wei
Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit a first downlink control information block over a group physical downlink control channel (PDCCH), wherein the first downlink control information block identifies a plurality of user equipment (UEs) for performing aperiodic channel state information (C SI) measurements and an indication of CSI reference signal resources for a CSI reference signal. The base station may transmit the CSI reference signal on the indicated CSI reference signal resources. The UE may perform, in response to receiving the group PDCCH, an aperiodic CSI measurement of the CSI reference signal on the indicated CSI reference signal resources.
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Patent Agency Ranking
公开(公告)号：US20190334577A1
公开(公告)日：2019-10-31
申请号：US16385943
申请日：2019-04-16
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Srinivas Yerramalli , Xiaoxia Zhang , Tamer Kadous , Yongbin Wei , Jing Sun , Andrei Dragos Radulescu
IPC: H04B1/7143 , H04B1/7156 , H04B1/7136 , H04L27/26
Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.
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公开(公告)号：US20190306878A1
公开(公告)日：2019-10-03
申请号：US16281828
申请日：2019-02-21
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxia Zhang , Zhifei Fan , Kapil Bhattad , Jing Sun , Tamer Kadous , Srinivas Yerramalli
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.
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公开(公告)号：US10432387B2
公开(公告)日：2019-10-01
申请号：US15704733
申请日：2017-09-14
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Wanshi Chen , Peter Gaal , Jing Sun , Shimman Arvind Patel
Abstract: Methods, systems, and devices for wireless communication are described. A base station may allocate resources for communication with a user equipment (UE). The resources may include one or more subframes, and each subframe may include one or more shortened transmission time intervals (sTTIs). Each sTTI may be assigned a transmission direction according to a time division duplex (TDD) pattern. Based on traffic needs and/or interference from other UEs and/or base stations, the base station may determine to modify the TDD pattern used for communication. Accordingly, a base station may transmit an indicator in a control message or control region of a TTI or sTTI, to indicate to users that a transmission direction of an sTTI in the TDD pattern is being changed. Subsequently, a user may communicate with the base station according to the reconfigured TDD pattern.
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公开(公告)号：US10425205B2
公开(公告)日：2019-09-24
申请号：US15663368
申请日：2017-07-28
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Wanshi Chen , Jing Sun , Alberto Rico Alvarino , Shimman Arvind Patel
Abstract: Methods, systems, and devices for wireless communication are described that support sounding reference signal (SRS) transmission in low latency wireless transmissions. A set of shortened transmission time intervals (sTTIs) for uplink transmissions of a first wireless service may be identified; the set of sTTIs located within subframe time boundaries of a subframe of a second wireless service with a longer TTI than the sTTIs. Two or more sTTIs within the set of sTTIs may be used for SRS transmissions within the subframe time boundaries.
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公开(公告)号：US10411856B2
公开(公告)日：2019-09-10
申请号：US14866313
申请日：2015-09-25
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tao Luo , Hao Xu , Yongbin Wei , Durga Prasad Malladi
Abstract: Techniques are provided for reference signal transmissions and transmit power ratio determination in non-orthogonal transmissions. A traffic-to-pilot power ratio (TPR) may be determined for a base layer for a non-orthogonal channel and another TPR may be determined for an enhancement layer for the non-orthogonal channel. Reference signal transmissions may be transmitted by a base station at a reference signal transmission power, and a user equipment (UE) may estimate channel quality for the base layer or the enhancement layer based at least in part on an energy level of the received reference signal and one or more of the first TPR or the second TPR. A base station may transmit TPR signaling that may indicate one or more TPR values for one or both of the base layer or enhancement layer.
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