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公开(公告)号：US20190386867A1
公开(公告)日：2019-12-19
申请号：US16556946
申请日：2019-08-30
发明人： Fengwei LIU , Lei CHEN
摘要： Embodiments of this application provide a communication method and an apparatus. A correspondence between a plurality of MCS indexes and a plurality of modulation schemes is provided to achieve flexible selection of a modulation scheme. In the correspondence, at least one MCS index of the plurality of MCS indexes corresponds to a set modulation schemes which comprises π/2 binary phase shift keying (π/2-BPSK) modulation and quadrature phase shift keying (QPSK) modulation. A first communication device receives a target modulation and coding scheme (MCS) index from a second communication device, determines a target modulation scheme corresponding to the target index number based on the correspondence, and performs communication with the second communication device based on the target modulation scheme.
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公开(公告)号：US20190334751A1
公开(公告)日：2019-10-31
申请号：US16506761
申请日：2019-07-09
发明人： Fengwei LIU , Lei CHEN
摘要： Embodiments of this application provide a method for transmitting a reference signal, including: sending, by a network device to UE, information about a waveform, an antenna port, and a resource block, where the waveform includes an OFDM waveform or a DFT-s-OFDM waveform, the antenna port indicates a resource mapping pattern used by the UE to send or receive a reference signal, and in a symbol of the resource mapping pattern, a reference signal corresponding to the DFT-s-OFDM waveform is mapped in frequency domain in a comb-shaped manner, and a reference signal corresponding to the OFDM waveform is mapped to a frequency domain resource to which the DFT-s-OFDM waveform is not mapped; and sending, by the network device, the reference signal or receiving the reference signal on the resource block based on the information about the waveform, the information about the antenna port, and the information about the resource block.
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公开(公告)号：US20240244608A1
公开(公告)日：2024-07-18
申请号：US18618524
申请日：2024-03-27
发明人： Shitong YUAN , Fengwei LIU , Xinghua SONG
IPC分类号： H04W72/044 , H04W52/36
CPC分类号： H04W72/046 , H04W52/36 , H04W72/0473
摘要： A resource configuration method includes obtaining, by a relay node, first information, wherein the first information comprises an identifier of at least one beam useable for sending a first signal. The method further includes sending second information to a parent node based on the first information, wherein the second information comprises a correspondence between the at least one beam and a desired power spectrum density (PSD). The method further includes receiving third information from the parent node, wherein the third information is useable to indicate to the relay node to determine a transmit power based on the third information.
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公开(公告)号：US20240205063A1
公开(公告)日：2024-06-20
申请号：US18591046
申请日：2024-02-29
发明人： Shitong YUAN , Fengwei LIU , Xinghua SONG
CPC分类号： H04L27/2605 , H04L5/0092
摘要： In a guard symbol configuration method and a communication apparatus, a first node indicates, to a second node, a number of guard symbols used or expected to be used in a larger subcarrier spacing, to avoid a scheduling conflict. The method includes: the first node sends a first medium access control control element (MAC CE) to the second node, where the first MAC CE indicates a number of guard symbols used in a first subcarrier spacing. The first node sends a second MAC CE to the second node, where the first MAC CE and the second MAC CE are jointly used to determine a number of guard symbols used or expected to be used in a second subcarrier spacing.
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公开(公告)号：US20240031005A1
公开(公告)日：2024-01-25
申请号：US18374818
申请日：2023-09-29
发明人： Fengwei LIU , Chuanhui MA
CPC分类号： H04B7/1555 , H04B7/04
摘要： Embodiments of this application provide a signal forwarding method and apparatus, and relate to the field of wireless communication technologies, to improve a coverage gain and reduce a forwarding delay. In this method, a relay node may combine N signals into one signal. Each signal may be a signal obtained by performing frequency shift on a signal received by a receive channel corresponding to each signal, or each signal may be a signal obtained without performing frequency shift on a signal received by a receive channel corresponding to each signal. At least one signal included in the N signals is a signal obtained by performing frequency shift on a signal received by a receive channel corresponding to the at least one signal. The relay node may send the combined one signal.
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公开(公告)号：US20230029758A1
公开(公告)日：2023-02-02
申请号：US17887272
申请日：2022-08-12
发明人： Fengwei LIU , Shitong YUAN , Lei CHEN
摘要： This application provides a power control method including: receiving, by a second node, radio resource control (RRC) from a first node, where the RRC includes a power control parameter set configured for the second node, the power control parameter set includes a power control index, and the power control index is determined based on a transmission mode or a transmission capability of the second node; receiving downlink control information (DCI) including power control index indication information used to: when the first node schedules the second node, indicate a value of a power control index that is for uplink transmission and that is for the second node; determining a transmit power based on the power control index indication information and the power control parameter set; and sending a signal at the determined transmit power.
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公开(公告)号：US20220394737A1
公开(公告)日：2022-12-08
申请号：US17887149
申请日：2022-08-12
发明人： Fengwei LIU , Jing QIU
摘要： This application discloses example resource configuration methods and integrated access and backhaul (IAB) nodes. One example method includes sending, by a first node, first information and second information to a second node, where the first information indicates a resource multiplexing capability supported by one or more carriers of a mobile termination (MT) of the first node and one or more cells of a distributed unit (DU) of the first node, and the second information indicates a condition that needs to be met for the resource multiplexing capability supported by the one or more carriers of the MT. The resource multiplexing capability includes a capability 1, a capability 2, a capability 3, and a capability 4, where the capability 1, the capability 2, the capability 3, and the capability 4 indicate respectively whether the MT and the DU can send or receive signals simultaneously.
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公开(公告)号：US20220271983A1
公开(公告)日：2022-08-25
申请号：US17687082
申请日：2022-03-04
发明人： Qianli MA , Fengwei LIU
摘要： Embodiments of this application provide a signal transmission method and a communication apparatus in a multi-waveform scenario, and are applied to a scenario in which a single-carrier waveform and a multi-carrier waveform coexist. In this method, a network device indicates, via first indication information, a terminal device to transmit a signal by using transmission parameters corresponding to the first indication information, so that the terminal device transmits the signal by using the specified transmission parameters. Transmission parameters includes at least two of a transmission bandwidth, an extended bandwidth, or a total bandwidth. According to the embodiments of this application, a transmit end may perform sending by using the single-carrier waveform, and a receive end may perform receiving by using the multi-carrier waveform; or a transmit end may perform sending by using the multi-carrier waveform, and a receive end may perform receiving by using the single-carrier waveform.
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公开(公告)号：US20220225333A1
公开(公告)日：2022-07-14
申请号：US17707846
申请日：2022-03-29
发明人： Fengwei LIU , Xinghua SONG , Qiqi MAO , Jing QIU
IPC分类号： H04W72/04
摘要： Example resource dynamic indication methods and an apparatus are described. One example method includes determining, by a first node based on first indication information sent by a second node or a donor node, semi-static resource configuration on first resources corresponding to D carriers and second resources corresponding to F cells. The first node determines, based on second indication information sent by the second node or the donor node, an availability status of an available resource in the first resources corresponding to the D carriers and an availability status of a dynamic resource in the second resources corresponding to the F cells.
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公开(公告)号：US20220210772A1
公开(公告)日：2022-06-30
申请号：US17567806
申请日：2022-01-03
发明人： Fengwei LIU , Lei CHEN
摘要： The present disclosure relates to control information sending methods in a wireless communications system. In one example waveform control information sending method, a network device obtains control information that includes uplink transmission waveform indication information, and sends the control information to a terminal. After receiving the control information, the terminal determines, based on the control information, a waveform used to send uplink data.
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