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公开(公告)号：US20240250744A1
公开(公告)日：2024-07-25
申请号：US18159640
申请日：2023-01-25
摘要： Methods, systems, and devices for wireless communications are described. Techniques described herein provide for passive beamforming for Wi-Fi. A first wireless device communicating in an active session via a first bandwidth with a second wireless device may use a passive beamforming technique to identify a transmission sector of the second wireless device and/or a receive sector for communications on a second bandwidth, while the first wireless device is in an inactive session state for the second bandwidth. The second wireless device may transmit beacons in the second bandwidth via directional transmission sectors while the first wireless device is in the inactive session state for the second bandwidth. The first wireless device may receive the beacons and may select a transmission sector based on the beacons. The first wireless device may indicate the selected transmission sector to the second wireless device. The first wireless device may select a receive sector based on the beacons.
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公开(公告)号：US10469158B2
公开(公告)日：2019-11-05
申请号：US15706934
申请日：2017-09-18
发明人： Arvind Sridharan , Kapil Bhattad , Manikandan Chandrasekar , Gowrisankar Somichetty , Alberto Rico Alvarino , Xiao feng Wang
IPC分类号： H04B7/26 , H04J3/06 , H04L5/14 , H04L5/02 , H04L5/24 , H04W72/04 , H04L5/00 , H04W4/70 , H04L1/04 , H04W56/00
摘要： There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a bandwidth for narrowband communications. The apparatus may determine a narrowband TDD frame structure for the narrowband communications. In one aspect, the narrowband TDD frame structure may include at least one of two or more contiguous downlink subframes, or one or more flexible subframes that can be configured as either a downlink subframe or an uplink subframe. The apparatus may communicate with a UE using the narrowband TDD frame structure determined for the narrowband communications.
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公开(公告)号：US12132559B2
公开(公告)日：2024-10-29
申请号：US18159640
申请日：2023-01-25
摘要： Methods, systems, and devices for wireless communications are described. Techniques described herein provide for passive beamforming for Wi-Fi. A first wireless device communicating in an active session via a first bandwidth with a second wireless device may use a passive beamforming technique to identify a transmission sector of the second wireless device and/or a receive sector for communications on a second bandwidth, while the first wireless device is in an inactive session state for the second bandwidth. The second wireless device may transmit beacons in the second bandwidth via directional transmission sectors while the first wireless device is in the inactive session state for the second bandwidth. The first wireless device may receive the beacons and may select a transmission sector based on the beacons. The first wireless device may indicate the selected transmission sector to the second wireless device. The first wireless device may select a receive sector based on the beacons.
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公开(公告)号：US20200084770A1
公开(公告)日：2020-03-12
申请号：US16681389
申请日：2019-11-12
发明人： Gowrisankar SOMICHETTY , Kapil Bhattad , Alberto Rico Alvarino , Xiao Feng Wang , Manikandan Chandrasekar
摘要： In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a narrowband TDD frame structure of a group of narrowband TDD frame structures for narrowband communications. The apparatus may transmit a series of repetitions of a narrowband physical downlink channel using the narrowband TDD frame structure. In one aspect, a first portion of repetitions from the series of repetitions may be transmitted in one or more first sets of downlink subframes using a first scrambling sequence. In one aspect, a second portion of repetitions from the series of repetitions may be transmitted in one or more second sets of downlink subframes using a second scrambling sequence.
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公开(公告)号：US10542538B2
公开(公告)日：2020-01-21
申请号：US15724068
申请日：2017-10-03
发明人： Gowrisankar Somichetty , Kapil Bhattad , Alberto Rico Alvarino , Xiao feng Wang , Manikandan Chandrasekar
摘要： A method, computer-readable medium, and apparatus are provided. The apparatus may determine a first set of subframes in the narrowband TDD frame structure used for transmitting a downlink control channel to a UE. In one aspect, a last subframe in the first set of subframes may be subframe n. Further, the apparatus may determine a second set of subframes in the narrowband TDD frame structure used for transmitting a downlink data channel to the UE. In certain aspects, a first subframe in the second set of subframes may be delayed based on k0 number of subframes after the subframe n. In certain other aspects, a last subframe in the second set of subframes may be subframe n+k0+x. Additionally, the apparatus may signal first information associated with the k0 number of subframes to the UE in a first delay field in a DCI transmission.
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公开(公告)号：US20170338984A1
公开(公告)日：2017-11-23
申请号：US15162301
申请日：2016-05-23
CPC分类号： H04L27/148 , H04L25/08 , H04L27/26 , H04L27/3854 , H04L27/3863
摘要： A device for communication includes a receiver and a tuned infinite impulse response (IIR) compensation filter. The receiver is coupled to an in-phase path and a quadrature path. The tuned IIR compensation filter is coupled to one of the in-phase path or the quadrature path.
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7.发明授权公开(公告)号：US11811690B2
公开(公告)日：2023-11-07
申请号：US17449739
申请日：2021-10-01
发明人： Arul Durai Murugan Palanivelu , Kapil Bhattad , Manikandan Chandrasekar , Alberto Rico Alvarino
IPC分类号： H04L5/00 , H04W4/70 , H04W64/00 , H04W56/00 , H04W72/04 , H04W72/044 , H04W72/23 , H04L67/12
CPC分类号： H04L5/0048 , H04L5/0005 , H04L5/0053 , H04W4/70 , H04W56/001 , H04W64/00 , H04W72/044 , H04W72/0466 , H04W72/23 , H04L67/12
摘要： Wireless communications systems and methods related to communicating positioning reference signals (PRSs) for narrowband communication are provided. A first wireless communication device determines a time-frequency PRS pattern based at least in part on a narrowband communication frequency band configuration and a PRS subframe configuration mode associated with a set of subframes. The first wireless communication device communicates, with a second wireless communication device, a plurality of PRSs using the determined PRS time-frequency pattern in the set of subframes. The PRS subframe configuration mode can indicate a first configuration including a bitmap indicating a set of PRS subframes positioned within a group of contiguous subframes, a second configuration indicating a subset of the group of contiguous subframes that may carry the PRSs, or a combination thereof. The first configuration and/or the second configuration can be used to indicate the set of subframes.
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8.发明申请公开(公告)号：US20220021501A1
公开(公告)日：2022-01-20
申请号：US17449739
申请日：2021-10-01
发明人： Arul Durai Murugan Palanivelu , Kapil Bhattad , Manikandan Chandrasekar , Alberto Rico Alvarino
摘要： Wireless communications systems and methods related to communicating positioning reference signals (PRSs) for narrowband communication are provided. A first wireless communication device determines a time-frequency PRS pattern based at least in part on a narrowband communication frequency band configuration and a PRS subframe configuration mode associated with a set of subframes. The first wireless communication device communicates, with a second wireless communication device, a plurality of PRSs using the determined PRS time-frequency pattern in the set of subframes. The PRS subframe configuration mode can indicate a first configuration including a bitmap indicating a set of PRS subframes positioned within a group of contiguous subframes, a second configuration indicating a subset of the group of contiguous subframes that may carry the PRSs, or a combination thereof. The first configuration and/or the second configuration can be used to indicate the set of subframes.
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公开(公告)号：US10958337B2
公开(公告)日：2021-03-23
申请号：US15707003
申请日：2017-09-18
发明人： Arvind Sridharan , Kapil Bhattad , Manikandan Chandrasekar , Gowrisankar Somichetty , Alberto Rico Alvarino , Xiao feng Wang
IPC分类号： H04B7/26 , H04J3/06 , H04L5/14 , H04L5/02 , H04L5/00 , H04W4/70 , H04L1/08 , H04L5/24 , H04W72/04 , H04L1/04 , H04W56/00
摘要： There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a narrowband communication frame structure comprising a FDD mode or a TDD mode and a particular TDD frame structure for narrowband communications from a group of narrowband TDD frame structures. The apparatus may determine a periodicity, subframe number, and transmission sequence associated with a SSS based at least in part on the narrowband TDD frame structure. The apparatus may transmit the SSS using the narrowband TDD frame structure determined for the narrowband communications. In one aspect, the SSS may be transmitted in a same subframe within a frame and at a periodicity of 2 or more frames.
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公开(公告)号：US10404360B2
公开(公告)日：2019-09-03
申请号：US15707774
申请日：2017-09-18
发明人： Arvind Sridharan , Kapil Bhattad , Manikandan Chandrasekar , Gowrisankar Somichetty , Alberto Rico Alvarino , Xiao feng Wang
IPC分类号： H04L5/24 , H04B7/26 , H04J3/06 , H04L5/14 , H04L5/02 , H04W72/04 , H04L1/08 , H04L5/00 , H04W4/70 , H04L1/04 , H04W56/00
摘要： There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a narrowband communication frame structure comprising a FDD frame structure or a TDD frame structure and a narrowband TDD frame structure configuration for narrowband communications from a group of narrowband TDD frame structures configurations. The apparatus may determine one or more narrowband carriers and subframes within the one or more narrowband carriers to transmit at least one of a BCH or a SIB1 based on the narrowband communication frame structure or the TDD frame structure configuration. The apparatus may transmit a PSS, an SSS, and at least one of a BCH or an SIB1 using the narrowband TDD frame structure determined for the narrowband communications. In one aspect, a carrier used for transmitting the BCH and/or the SIB may be different than a carrier used to transmit one or more of the PSS or the SSS. In another aspect, a narrowband carrier used for transmitting the BCH may be different than a narrowband carrier used to transmit one or more of the PSS or the SSS.
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