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1. 发明授权

US11638136B2 Radio channel fast scanning 有权
公开(公告)号：US11638136B2
公开(公告)日：2023-04-25
申请号：US16250684
申请日：2019-01-17
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Miguel Lopez , Yi-Pin Eric Wang
IPC分类号： H04W4/80 , H04B7/22 , H04L27/20 , H04W24/10 , H04W72/0453
摘要： An apparatus, method and wireless device for fast scanning of a wireless communications medium are disclosed. According to one aspect, a method includes tuning a transceiver of the wireless node to a first frequency. The method further includes computing a first difference frequency, the first difference frequency being a difference between the first frequency and a second frequency. The method further includes generating a first control signal to configure a first backscattering device to switch between at least two states at a switching frequency equal to the first difference frequency.

2. 发明授权

US11627024B2 Wideband vector modulator phase shifter 有权
公开(公告)号：US11627024B2
公开(公告)日：2023-04-11
申请号：US17510306
申请日：2021-10-25
申请人： Mixcomm, Inc.
发明人： Kang Ning , Harish Krishnaswamy , Arun Natarajan
IPC分类号： H03K5/13 , H04L27/20 , H03K5/01
摘要： Methods and apparatus for implementing passive wideband phase shifters are described. The phase shifters exhibit good linearity over a wide range of frequencies. Furthermore at least some features are directed to allowing the phase shifters to be implemented in some embodiments in a relatively compact manner making such embodiments well suited for supporting arrays and/or other implementations where a large number of phase shifters are to be implemented in a relatively small chip area.

3. 发明申请

US20230103266A1 Information Content in Zero-Power Modulation States in 5G and 6G 有权
公开(公告)号：US20230103266A1
公开(公告)日：2023-03-30
申请号：US18075489
申请日：2022-12-06
申请人： David E. Newman , R. Kemp Massengill
发明人： David E. Newman , R. Kemp Massengill
IPC分类号： H04L27/34 , H04L27/20 , H04L1/00
摘要： In addition to the normal modulation states of 5G and 6G (BPSK, QPSK, 16QAM, etc.), the modulation scheme may include one or more zero-power states in which an amplitude is transmitted with very low or zero power. The receiver can detect the zero-power state and treat that state as an additional modulation state of the modulation scheme, thereby increasing the information content of each message element due to the additional number of modulation states available for encoding. Alternatively, the zero-power state or states may be used for special options, such as indicating a beginning or an ending of the message. Zero-power states may also be used to separate the message from an associated demodulation reference or to separate sequential messages. Substantial power may be saved since the zero-power states require very little (or no) transmitter power.

4. 发明申请

US20230097295A1 BACKSCATTER TRANSMITTER AND SIGNAL TRANSMISSION METHOD 有权
公开(公告)号：US20230097295A1
公开(公告)日：2023-03-30
申请号：US18074414
申请日：2022-12-02
申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
发明人： Shuai SHAO
IPC分类号： H04L27/20 , H04B1/04
摘要： Disclosed in the present application are a backscatter transmitter and a signal transmission method, relating to the field of mobile communication. The backscatter transmitter comprises a processor, a receiving antenna, a transmitting antenna, and a keying switch; the processor is used for controlling the connection path between the receiving antenna and the transmitting antenna by means of controlling the keying switch; the receiving antenna is used for receiving a first radio frequency signal; the connection path is used for modulating the phase of the first radio frequency signal to obtain a modulated second radio frequency signal; and the transmitting antenna is used for transmitting the second radio frequency signal. Thus, provided is a novel backscatter transmitter that does not require the arrangement of a mixer and is capable of implementing modulation of the phase of a radio frequency signal by means of only the connection path between the receiving antenna and the transmitting antenna; the structure is simple, the implementation principles are simple, and there is no need for excessive power consumption. The processor can adjust the connection path between the receiving antenna and the transmitting antenna by means of controlling the keying switch, being highly flexible.

5. 发明申请

US20230080783A1 TRANSMISSION DEVICE, RECEPTION DEVICE, RADIO COMMUNICATION SYSTEM, CONTROL CIRCUIT, AND STORAGE MEDIUM 有权
公开(公告)号：US20230080783A1
公开(公告)日：2023-03-16
申请号：US17990911
申请日：2022-11-21
申请人： Mitsubishi Electric Corporation
发明人： Akinori NAKAJIMA
IPC分类号： H04L27/26 , H04L27/20
摘要： A transmission device includes: a reference sequence obtaining unit that obtains a reference sequence having a symbol sequence length equal to or smaller than a modulation order in a modulation method used for data transmission, the reference sequence having a constant amplitude in a time domain and a frequency domain; and a multiplexing unit that transmits a signal including the reference sequence.

6. 发明授权

US11497016B2 Method of determining modulation order and transport block size in downlink data channel, and apparatus thereof 有权
公开(公告)号：US11497016B2
公开(公告)日：2022-11-08
申请号：US16541393
申请日：2019-08-15
申请人： KT CORPORATION
发明人： Seunghyun Kang , Woo-jin Choi
IPC分类号： H04W72/04 , H04W4/70 , H04L1/00 , H04L5/00 , H04L27/00 , H04L27/20 , H04L27/36
摘要： The present disclosure relates to a method and apparatus for configuring a resource for the transmission/reception of data. More particularly, the present disclosure relates to a method and apparatus for configuring an MCS and a TBS for an MTC terminal. Particularly, provided is a method and apparatus for determining a TBS by an MTC terminal. The method may include receiving scheduling information transmitted based on an MCS used for the MTC terminal and a TBS table and determining a TBS using the scheduling information provided by a base station.

7. 发明授权

US11496343B2 Method for decoding an RF signal bearing a sequence of symbols modulated by CPM and associated decoder 有权
公开(公告)号：US11496343B2
公开(公告)日：2022-11-08
申请号：US17467907
申请日：2021-09-07
申请人： RIVIERAWAVES
发明人： Ahmad Bazzi , Lisa Meilhac
IPC分类号： H04L27/20 , H04B7/06
摘要： A method for decoding an RF signal bearing a sequence of transmitted symbols modulated by CPM. The method includes, at the receiver: estimating model parameters {h, ω, Φ0} among which h characterizes a modulation index, ω characterizes a carrier frequency offset and Φ0 characterizes an initial phase offset, and detecting received symbols corresponding to said transmitted symbols of the sequence, wherein, at time nT where T is a symbol duration, the parameters {h, ω, Φ0} are estimated by solving a system of three linear equations whose: three unknowns {ĥ(n), {circumflex over (ω)}(n), {circumflex over (Φ)}0(n)} are respectively function of said model parameters {h, ω, Φ0}, and coefficients {B(n), C(n), D(n), F(n), G(n), H(n), v1(n), v2(n), v3(n)} are computed in a recursive way in function of: a sequence of symbols {ân} corresponding to the sequence of transmitted symbols up to time nT, and measured phases {Ψk} of samples {yk} of the RF signal received from time (n−1)T to time nT.

8. 发明申请

US20220353118A1 SYSTEMS AND METHODS FOR SELECTING SUBCARRIERS FOR SUB-PRB TRANSMISSIONS 有权
公开(公告)号：US20220353118A1
公开(公告)日：2022-11-03
申请号：US17863465
申请日：2022-07-13
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Yi-Pin Eric Wang , Anders K. Eriksson , Johan Bergman , Chunhui Zhang , Gerardo Agni Medina Acosta
IPC分类号： H04L27/20 , H04L27/26 , H04L5/00
摘要： Systems and methods for selecting subcarriers to be used for sub-Physical Resource Block (PRB) transmission and, in some embodiments, for mapping Demodulation Reference Signals (DMRS) to resources on the selected subcarriers are disclosed. In some embodiments, a method of operation of a radio node for providing sub-PRB transmission comprises selecting two adjacent subcarriers from a set of three allocated subcarriers that are allocated for a sub-PRB transmission that uses Single Carrier Frequency Division Multiple Access (SC-FDMA) Pi/2 Binary Phase Shift Keying (BPSK) modulation using only two adjacent subcarriers out of the set of three allocated subcarriers with Discrete Fourier Transform (DFT) spread length of 2. In some embodiments, the selection is such that the selected adjacent subcarriers varies, e.g., from one cell to another. In doing so, interference is distributed.

9. 发明申请

US20220330087A1 TECHNIQUE FOR CONFIGURING PREAMBLE IN WIRELESS COMMUNICATION SYSTEM 有权
公开(公告)号：US20220330087A1
公开(公告)日：2022-10-13
申请号：US17753366
申请日：2020-09-03
申请人： LG ELECTRONICS INC.
发明人： Dongguk LIM , Jinsoo CHOI , Eunsung PARK , Jinmin KIM
IPC分类号： H04W28/06 , H04L1/00 , H04L27/20
摘要： An example according to the present specification relates to a technique for configuring a preamble in a wireless LAN (WLAN) system. A transmitting STA may generate and transmit an EHT PPDU. The EHT PPDU may comprise an L-SIG field, an RL-SIG field, a first control field, and a second control field. A result of “modulo 3 operation” for a length field value of the L-SIG field may be set to “0.” The RL-SIG field may be configured to be the same as the L-SIG field. The first control field may comprise 3-bit information on the version of a PPDU, 6-bit information on a BSS color, and 7-bit information on TXOP.

10. 发明申请

US20220321902A1 APPARATUS AND METHODS FOR WATERMARKING USING STARTING PHASE MODULATION 有权
公开(公告)号：US20220321902A1
公开(公告)日：2022-10-06
申请号：US17849240
申请日：2022-06-24
申请人： The Nielsen Company (US), LLC
发明人： Alexander Topchy , Vladimir Kuznetsov , Jeremey M. Davis
IPC分类号： H04N19/467 , H04N21/442 , H04L27/20 , H04N21/8358 , H04L67/50
摘要： Methods, apparatus, systems and articles of manufacture are disclosed for watermarking using starting phase modulation. An example apparatus includes at least one memory, machine readable instructions, and processor circuitry to execute the machine readable instructions to at least access a media signal, access a watermark symbol to be encoded into the media signal, determine bit values of the watermark symbol, determine a common starting phase value for watermark components of the watermark symbol, the common starting phase value to represent at least one of the bit values of the watermark symbol, and embed the watermark components into the media signal based on the common starting phase value.

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