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公开(公告)号：US20180359716A1
公开(公告)日：2018-12-13
申请号：US15997398
申请日：2018-06-04
Applicant: QUALCOMM Incorporated
Inventor： Tianyang Bai , Muhammad Nazmul Islam , Sundar Subramanian , Junyi Li
CPC classification number: H04W56/001 , H04L5/006 , H04W74/0833
Abstract: Methods, systems, and devices for wireless communication are described. Signaling of a radio frequency (RF) band associated with a synchronization signal (SS) block detected by a user equipment (UE) may be transmitted to a base station. For example, a base station may transmit a set of SS blocks to multiple UEs, where the SS blocks are frequency division multiplexed such that each SS block is transmitted in a respective RF band. A UE may receive one or more of the transmitted SS blocks and determine a preferred SS block from the received SS blocks. The UE may in turn transmit an message to the base station that indicates the RF band of the preferred SS block. In some cases, the base station may optionally transmit a request to the UE to transmit the indication of the RF band.
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公开(公告)号：US20180317257A1
公开(公告)日：2018-11-01
申请号：US15950411
申请日：2018-04-11
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Junyi Li , Sundar Subramanian
Abstract: Methods, systems, and devices for wireless communication are described. A wireless node may transmit directional signals in a sweeping transmission pattern while receiving communications from a second wireless node. Another wireless node may then, during a listen-before-talk (LBT) procedure, receive one of the directional signals, and terminate a correspondence communication session to avoid potential interference. Additionally or alternatively, a wireless node may listen in directions in a sweeping receive pattern while transmitting to a second wireless node. While listening, the wireless node may detect a transmission from a third wireless node in a particular direction. The wireless node may then accordingly refrain from transmitting in that direction to avoid potential interference.
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公开(公告)号：US10097254B2
公开(公告)日：2018-10-09
申请号：US15369069
申请日：2016-12-05
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Krishna Kiran Mukkavilli , Juergen Cezanne , Tao Luo , Sundar Subramanian , Junyi Li
Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a phase noise correction reference signal (PC-RS) and a channel state information reference signal (CSI-RS) during a symbol period of a subframe. A user equipment (UE) may identify a first channel information using the PC-RS and the CSI-RS. The UE may transmit a channel information message to the base station that includes the first channel information. The first channel information may include a phase noise corrected channel measurement. The UE may the CSI-RS during the symbol period. Channel and phase noise estimates may be generated using a joint estimation based on the CSI-RS. The CSI-RS may be repeated periodically. In some cases, the UE may additionally or alternatively receive pilot tones that may include PC-RSs. The joint estimation may be further based on the pilot tones.
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公开(公告)号：US20180234151A1
公开(公告)日：2018-08-16
申请号：US15951736
申请日：2018-04-12
Applicant: QUALCOMM Incorporated
Inventor： Junyi Li , Ashwin Sampath , Sundar Subramanian
Abstract: The disclosure relates in some aspects to communicating different symbols with different types of cyclic prefixes. For example, a first symbol may have a first type of orthogonal frequency-division multiplexing (OFDM) cyclic prefix while a second symbol (e.g., immediately following the first symbol) may have a second type of OFDM cyclic prefix. In scenarios where a cyclic prefix does not include any chips (samples), the beamforming configuration for a transmitter can be changed during the cyclic prefix. At the receiver, the cyclic prefix is reconstructed based on the chips (samples) received during the symbol.
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65.发明申请公开(公告)号：US20180199258A1
公开(公告)日：2018-07-12
申请号：US15713494
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Juergen Cezanne , Vasanthan Raghavan , Sundar Subramanian , Ashwin Sampath , Junyi Li
IPC: H04W40/06 , H01Q21/00 , H04B7/0408 , H04B7/0413 , H04W72/04 , H04B7/06
Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) may include receiving a beam training sequence transmitted by a network access device on a plurality of transmit beams, identifying, based at least in part on the received beam training sequence, one or more sets of multiple beams that are compatible with at least one configuration for routing signals between antenna subarrays of the UE and transceiver units (TXRUs) of the UE, and transmitting, to the network access device, an indication of the identified one or more sets of multiple beams. A method for wireless communication at the network device may include transmitting the beam training sequence, receiving the indication, and selecting, based at least in part on the received indication, a set of multiple beams of the one or more sets of multiple beams to use to communicate with the UE.
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Patent Agency Ranking
公开(公告)号：US20180159764A1
公开(公告)日：2018-06-07
申请号：US15887554
申请日：2018-02-02
Applicant: QUALCOMM Incorporated
Inventor： Jung Ryu , Sundar Subramanian , Ashwin Sampath , Junyi Li
IPC: H04L12/707 , H04W76/16 , H04W76/15 , H04W48/10 , H04W28/08 , H04W28/06 , H04W88/06 , H04W92/20 , H04W36/22
CPC classification number: H04L45/22 , H04W28/06 , H04W28/08 , H04W36/22 , H04W48/10 , H04W76/15 , H04W76/16 , H04W88/06 , H04W92/20
Abstract: Methods, systems, and apparatuses are described for a base station initiated control mechanism for supporting supplemental a link. In some aspects, control information associated with a directional, first radio access technology (RAT) for a user equipment (UE) may be identified at a first base station, the first base station configured to communicate with the UE using the directional, first RAT, and the control information associated with the directional, first RAT may be transmitted to a second base station to forward to the UE using a second RAT.
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公开(公告)号：US20180139712A1
公开(公告)日：2018-05-17
申请号：US15713167
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Navid Abedini , Bilal Sadiq , Sundar Subramanian , Junyi Li , Muhammad Nazmul Islam , Atul Maharshi , Juergen Cezanne , Ashwin Sampath
CPC classification number: H04W56/0005 , H04L27/2613 , H04L27/2657 , H04L27/2666 , H04L27/2675 , H04L27/2692 , H04W56/00 , H04W56/0035
Abstract: Methods, systems, and devices for wireless communication are described that provide for the indication of communication information using a correlation between synchronization signals transmitted by a base station for cell acquisition. The communication information may include a physical channel timing parameter such as synchronization periodicity, a physical broadcast channel (PBCH) periodicity, a beam sweep periodicity, or a cyclic prefix (CP) type. Communication information may also indicate the presence of a physical broadcast channel (PBCH) transmission or a mobility reference signal (MRS) transmission. The correlation may be a phase shift between multiple signals or may be based on precoding matrices used during transmission processing of the synchronization signals across subcarriers and antenna ports.
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公开(公告)号：US09948374B2
公开(公告)日：2018-04-17
申请号：US14693624
申请日：2015-04-22
Applicant: QUALCOMM Incorporated
Inventor： Junyi Li , Ashwin Sampath , Sundar Subramanian
CPC classification number: H04B7/0617 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04L5/0082 , H04L27/2607 , H04L27/2634 , H04L27/2636
Abstract: A beamforming configuration is changed during a cyclic prefix that precedes a symbol period. For example, the beamforming configuration for a transmitter can be changed during an orthogonal frequency-division multiplexing (OFDM) cyclic prefix that precedes a fast Fourier transform (FFT) window. At the receiver, the cyclic prefix is reconstructed based on the chips received during FFT window. In this way, there is no loss of data signaling due to the transmitter reconfiguring its beamforming.
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公开(公告)号：US20180091274A1
公开(公告)日：2018-03-29
申请号：US15618969
申请日：2017-06-09
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Bilal Sadiq , Ashwin Sampath , Sundar Subramanian , Junyi Li , Vasanthan Raghavan
IPC: H04L5/00 , H04W16/28 , H04B7/0456 , H04B7/06
CPC classification number: H04B7/0617 , H04B7/0456 , H04B7/0621 , H04B7/0695 , H04L5/0048 , H04W16/28 , H04W24/10 , H04W72/046 , H04W88/02
Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.
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公开(公告)号：US09903937B2
公开(公告)日：2018-02-27
申请号：US14601820
申请日：2015-01-21
Applicant: QUALCOMM Incorporated
Inventor： Zhenliang Zhang , Sundar Subramanian , Ashwin Sampath , Junyi Li
CPC classification number: G01S5/0284 , G01S3/74 , G01S5/0294 , H04B7/0617 , H04B7/0834 , H04W64/003
Abstract: Methods, systems, and apparatuses are described for using known geographical information in directional wireless communication systems. In some aspects, an estimated position of a receiver relative to a transmitter may be determined based at least in part on known geographical information, and a desired beam direction for wireless communication from the transmitter to the receiver may be searched for based at least in part on the estimated position of the receiver.
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