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公开(公告)号：US11824629B2
公开(公告)日：2023-11-21
申请号：US17739724
申请日：2022-05-09
Applicant: WISIG NETWORKS PRIVATE LIMITED
Inventor： Kiran Kumar Kuchi
IPC: H04J13/00 , H04J11/00 , H04L5/00 , H04L27/26 , H04W72/541
CPC classification number: H04J13/004 , H04J11/0033 , H04L5/0051 , H04L27/265 , H04L27/2626 , H04L27/26526 , H04W72/541 , H04J2011/0013 , H04L5/0048
Abstract: The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.
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公开(公告)号：US20150181597A1
公开(公告)日：2015-06-25
申请号：US14573577
申请日：2014-12-17
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Yongbin Wei
CPC classification number: H04W72/0446 , H04J11/00 , H04J2011/0009 , H04J2011/0013 , H04L1/18 , H04L5/0007 , H04L5/001 , H04L5/0037 , H04L5/0044 , H04L5/0055 , H04L5/0076 , H04L5/14 , H04L27/2602 , H04L27/2605 , H04L43/0864 , H04W16/32 , H04W72/0453 , H04W74/08
Abstract: Methods, systems, and devices are described for hierarchical communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing.
Abstract translation: 描述了用于无线通信系统内的分层通信的方法，系统和设备。 eNB和/或UE可以被配置为在无线通信系统内操作，所述无线通信系统至少部分地通过具有第一子帧类型的第一层传输的第一层定义，而具有第二子帧类型的第二层传输的第二层。 第一子帧类型可以在传输和传输的接收确认之间具有第一往返时间（RTT），并且第二层可以具有小于第一RTT的第二RTT。 第一子帧类型的子帧可以与第二子帧类型的子帧复用，例如通过时分复用。
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公开(公告)号：US20240235713A1
公开(公告)日：2024-07-11
申请号：US18497419
申请日：2023-10-30
Applicant: WISIG NETWORKS PRIVATE LIMITED
Inventor： Kiran Kumar Kuchi
IPC: H04J13/00 , H04J11/00 , H04L5/00 , H04L27/26 , H04W72/541
CPC classification number: H04J13/004 , H04J11/0033 , H04L5/0051 , H04L27/2626 , H04L27/265 , H04L27/26526 , H04W72/541 , H04J2011/0013 , H04L5/0048
Abstract: The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.
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公开(公告)号：US20240205857A1
公开(公告)日：2024-06-20
申请号：US18590888
申请日：2024-02-28
Applicant: David E. Newman , R. Kemp Massengill
Inventor： David E. Newman , R. Kemp Massengill
CPC classification number: H04W56/005 , H04J3/0661 , H04J3/0667 , H04J11/00 , H04L7/0037 , H04L7/007 , H04L27/2601 , H04W56/003 , H04W56/0055 , H04W56/0075 , H04J2011/0013 , H04J2011/0096
Abstract: Current methods for synchronizing user devices with the base station of a 5G/6G network require multiple exchanges with each user device, consuming limited resources. Disclosed herein are systems and methods for generating and then detecting precision-timing timestamp points. Importantly, the timestamp points can be used by all of the user devices simultaneously, instead of just one at a time. In a first embodiment, the timestamp includes three resource elements with a first modulation (amplitude or phase) in the first and third resource elements, and a different modulation in the middle one. In a second embodiment, the base station transmits a first signal in the first half of a single resource element, and a different signal modulation in the second half. In either case, the user devices can receive the signal, determine the time of interface between the modulation states, and thereby determine the symbol boundaries according to the base station.
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公开(公告)号：US20230261820A1
公开(公告)日：2023-08-17
申请号：US18309617
申请日：2023-04-28
Applicant: Saturn Licensing LLC
Inventor： Samuel Asangbeng ATUNGSIRI
CPC classification number: H04L5/0044 , H04L5/0007 , H04L5/0053 , H04L5/0091 , H04L27/2613 , H04J11/00 , H04L27/265 , H04J2011/0013
Abstract: A receiver for detecting and recovering payload data from a received signal comprises a radio frequency demodulation circuit, a detector circuit and a demodulator circuit. The radio frequency demodulation circuit detects the received signal. The received signal carries the payload data as OFDM symbols in one or more of a plurality of time divided frames, each frame including a bootstrap signal, a preamble signal and a plurality of sub-frames. The demodulator circuit detects bootstrap OFDM symbols to identify communications parameters for detecting the fixed length signalling data, detects the fixed length signalling data to identify the communications parameters for detecting the variable length signalling data, detects the variable length signalling data, and uses the fixed and variable length signalling data to detect the payload data.
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Patent Agency Ranking
公开(公告)号：US11722980B1
公开(公告)日：2023-08-08
申请号：US18096052
申请日：2023-01-12
Applicant: David E. Newman , R. Kemp Massengill
Inventor： David E. Newman , R. Kemp Massengill
CPC classification number: H04W56/0075 , H04J3/0667 , H04J11/00 , H04L27/2601 , H04J2011/0013 , H04J2011/0096
Abstract: High-frequency communications in 5G and especially 6G will require precise synchronization of user devices with the base station, including setting the user device clock time and clock rate. The base station can assist user devices by periodically providing a guard-space timestamp point, at which a phase or amplitude of the timing signal abruptly changes in the middle of the guard-space of a particular resource element or a particular OFDM symbol. A receiver can determine precisely the time of arrival of the timestamp point, and correct its clock setting to agree with the time of the timestamp point. The receiver can then provide uplink messages aligned with the base station's clock, by adding a previously determined timing advance to each uplink transmission. In addition, the user device can measure two guard-space timing signals with a predetermined separation, thereby adjusting the clock rate.
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公开(公告)号：US11665510B2
公开(公告)日：2023-05-30
申请号：US17242126
申请日：2021-04-27
Inventor： Jae-Young Lee , Sung-Ik Park , Bo-Mi Lim , Sun-Hyoung Kwon , Heung-Mook Kim
CPC classification number: H04W4/06 , H04J11/00 , H04L1/0071 , H04L1/0083 , H04L5/0044 , H04L12/184 , H04L27/26 , H04L27/2602 , H04L27/2605 , H04L27/2613 , H04W52/346 , H04J2011/0013 , H04L1/0058 , H04L27/26136 , H04L2001/0093 , Y02D30/70
Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, start position information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
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公开(公告)号：US20180014300A1
公开(公告)日：2018-01-11
申请号：US15636921
申请日：2017-06-29
Applicant: FUJITSU LIMITED
Inventor： Daisuke JITSUKAWA , Takashi DATEKI , Hiroyuki SEKI
CPC classification number: H04W72/0446 , H04B17/12 , H04B17/309 , H04J2011/0013 , H04L5/001 , H04L5/0048 , H04L5/006 , H04L5/0094 , H04L5/14 , H04L27/2605 , H04W28/06 , H04W72/0413
Abstract: The base station may selectively apply one of a first time period having a first guard period (GP) and a second time period having a second GP to time-division duplex communication with a terminal. Further, the base station may notify the terminal of information related to a timing of selectively applying one of the first time period and the second time period, and transmit a predetermined signal in the first guard period.
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公开(公告)号：US20170164359A1
公开(公告)日：2017-06-08
申请号：US15432330
申请日：2017-02-14
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Yongbin Wei
CPC classification number: H04W72/0446 , H04J11/00 , H04J2011/0009 , H04J2011/0013 , H04L1/18 , H04L1/1854 , H04L5/0007 , H04L5/001 , H04L5/0037 , H04L5/0044 , H04L5/0055 , H04L5/0076 , H04L5/14 , H04L27/2602 , H04L27/2605 , H04L43/0864 , H04W16/32 , H04W72/0453 , H04W74/08
Abstract: Methods, systems, and devices are described for hierarchical communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing.
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公开(公告)号：US20240214961A1
公开(公告)日：2024-06-27
申请号：US18597723
申请日：2024-03-06
Applicant: David E. Newman , R. Kemp Massengill
Inventor： David E. Newman , R. Kemp Massengill
CPC classification number: H04W56/005 , H04J3/0661 , H04J3/0667 , H04J11/00 , H04L7/0037 , H04L7/007 , H04L27/2601 , H04W56/003 , H04W56/0055 , H04W56/0075 , H04J2011/0013 , H04J2011/0096
Abstract: For synchronizing user devices to the base station of a 5G or 6G network, the base station can transmit brief prepared signals at a pre-scheduled time and frequency. All of the user devices in the network can then synchronize simultaneously, using amplitude measurements with standard signal processing. The user devices can thereby avoid the complex and time-consuming measurements of prior art. This simplified synchronization procedure may be especially relevant for reduced-capability IoT devices. Examples are provided in which each user device can measure a ratio of amplitudes or energy values in sequential symbol-times as determined by the local user device clock, and compare to the expected ratio as determined by the base station clock. Any deviation in the ratio indicates a timing offset, which the user devices can then use to precisely synchronize the local clock.
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