Abstract: Embodiments of this application disclose a resource configuration method and a communication apparatus. The resource configuration method includes: An integrated access and backhaul mobile terminal (IAB MT) determines a first time division duplex (TDD) configuration based on a first transmission mode. The first transmission mode includes a transmission mode on at least one frequency domain resource set in a plurality of frequency domain resource sets of an integrated access and backhaul distributed unit (IAB DU). The first TDD configuration is a cell-common TDD configuration or a dedicated TDD configuration. The IAB MT determines a resource location based on the first TDD configuration. It can be learned from the technical solution that the IAB MT selects the corresponding TDD configuration based on the transmission mode on the at least one frequency domain resource set, to determine the resource location.

Abstract: A channel information obtaining method and a communication apparatus are provided. The method includes: a network device sends reference signals to a terminal device by using a plurality of antenna unit groups, where at least two antenna unit groups of the plurality of antenna unit groups belong to one antenna port; and the network device receives first information from the terminal device, where the first information indicates channel information corresponding to the plurality of antenna unit groups, so as to improve accuracy of obtained channel information.

Abstract: This application provides a method and apparatus for determining a resource in a relay system. By receiving resource indication information transmitted by an upper-level node, a first node determines the availability of a symbol in a first resource set located between a first hard resource set and a second hard resource set, and communicates with the upper-level node on the symbol based on the resource indication information to maximally improve resource utilization.

Abstract: In a transmission parameter configuration method, a first node receives a transmission configuration message, where the transmission configuration message includes transmission configuration index information and a transmission parameter corresponding to the transmission configuration index information, and the transmission configuration index information is used to identify different transmission modes. The first node obtains a transmission indication message, where the transmission indication message includes the transmission configuration index information, and the transmission indication message is used to indicate to the first node to apply the transmission parameter corresponding to the transmission configuration index information. The first node performs, based on the transmission configuration index information, data transmission by using the transmission parameter corresponding to the transmission configuration index information.

Abstract: This application provides a symbol processing method and apparatus. The method includes: obtaining a plurality of complex-valued symbols; dividing the plurality of complex-valued symbols into a plurality of sets, where each set corresponds to one transmitted symbol; and performing a copy operation on the plurality of sets, so that two sets corresponding to two transmitted symbols that are consecutive in time domain have some same complex-valued symbols. By enabling two sets corresponding to two transmitted symbols that are consecutive in time domain to have some same complex-valued symbols, a guard interval between symbols can be flexibly configured when a cyclic prefix length is fixed.

Abstract: This application provides a communication method and apparatus. The communication method includes: receiving measurement configuration information from a network device, where the measurement configuration information is used to configure a channel measurement resource and M interference measurement resources, and M is a positive integer greater than or equal to 1; and sending a bitmap to the network device, where the bitmap includes one or more bits, each bit corresponds to one or more interference measurement resources and has a value indicating interference of the one or more interference measurement resources to the channel measurement resource, and the M interference measurement resources include the one or more interference measurement resources.

Abstract: This application provides a resource configuration method and apparatus. A multiplexing type between a second functional unit and each of one or more antenna panels of a first functional unit is indicated to an IAB node, so that the IAB node obtains a resource configuration of an MT or a resource configuration of a DU based on the multiplexing type. This helps implement a resource configuration in the IAB node in a case of a plurality of antenna panels.

Abstract: Example embodiments of this application provide a slot format configuration method. The method includes: a second node sends first configuration information to a first node, where the second node is a parent node of the first node; the first node determines a slot format of each slot in a first set of slots based on the first configuration information, where the first set of slots includes slots that are used for communication between the first node and a third node in one or more periods, and the third node is a child IAB node of the first node or a terminal device served by the first node; and the first node modifies slot formats of some slots in the first set of slots to obtain modified slot formats of these slots.

Abstract: A communication method, apparatus, and system. The method includes: determining a first configuration, a modulation order, and a first code rate, where the first configuration includes a mapping type, a time domain resource, and a first quantity and/or a first transmission quantity; determining a second code rate, a second quantity, and a second transmission quantity based on the first code rate, the mapping type, and the first quantity and/or the first transmission quantity; determining a valid resource of the second transport block based on the time domain resource, the second quantity, and the second transmission quantity; and sending second data to a first device based on first data, the modulation order, the second code rate, and the valid resource of the second transport block.

Abstract: This application provides a signal forwarding method and a communication apparatus, and relates to the field of communication technologies, to select a suitable amplifying power to amplify a to-be-forwarded signal and forward an amplified to-be-forwarded signal. The method includes: receiving the to-be-forwarded signal; amplifying the to-be-forwarded signal based on an amplification gain of the to-be-forwarded signal, where the amplification gain of the to-be-forwarded signal is determined by measuring a measurement signal, and the measurement signal corresponds to the to-be-forwarded signal; and forwarding the amplified to-be-forwarded signal. A relay device may determine the amplification gain of the to-be-forwarded signal by measuring the measurement signal, and amplify the to-be-forwarded signal based on the amplification gain of the to-be-forwarded signal and forward the amplified to-be-forwarded signal.

Abstract: This application provides a power control parameter determining method and an apparatus, to simplify a beam indication process and a power control parameter indication process, and reduce signaling overheads. The method and apparatus may be applied to a 5G communication system and a future communication system. The method includes: A terminal device receives, from a network device, first signaling that includes a first value of a DCI field, where the first value indicates a first TCI state in at least one activated TCI state; and obtains, based on a mapping relationship, a power control parameter set corresponding to the first TCI state. The mapping relationship includes a mapping relationship between an identifier of at least one mapping parameter subset and at least one value of the DCI field, or a mapping relationship between an identifier of at least one mapping parameter subset and the at least one activated TCI state.

Abstract: This application provides a method and an apparatus for determining a phase tracking reference signal (PTRS) pattern. The method includes: A terminal device receives first scheduled bandwidth threshold information from a network device, where a first scheduled bandwidth threshold indicated by the first scheduled bandwidth threshold information meets a first condition, and the first condition is that a ratio of a total quantity of modulation symbols in a PTRS pattern determined based on the first scheduled bandwidth threshold to a quantity of subcarriers in scheduled bandwidth is less than or equal to a first threshold; and determines a PTRS pattern on one orthogonal frequency division multiplexing (OFDM) symbol in an OFDM signal based on the scheduled bandwidth threshold. In this application, the network device configures, for the terminal device, the scheduled bandwidth threshold that meets the first condition, to ensure demodulation performance of the device.

Abstract: Embodiments of this application provide a signal forwarding method, a relay device, and a communication system, and relate to the field of communication technologies. The relay device determines a first time domain resource based on first resource information; and determines a first forwarding gain corresponding to the first resource information based on an association relationship between a forwarding gain and resource information, where the resource information includes one or more of the following: signal information, channel information, a time domain resource number, backhaul beam information, and access beam information; and forwards a received signal on the first time domain resource by using the first forwarding gain. In this application, the relay device forwards, based on forwarding gains corresponding to different resource information, a signal received on the first time domain resource. A coverage enhancement capability of the relay device can be improved in this manner.

Abstract: A communication method and apparatus.

Abstract: 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.

Abstract: This application discloses a signal transmission method and apparatus, to implement signal transmission by using a multi-stream DFT-s-OFDM waveform. The method includes: precoding N streams of signals based on a first codebook before sending, to obtain N1 precoded signals, where a quantity of non-zero elements in each row of the first codebook is 1, the first codebook causes a phase difference between two of the N streams of signals, and N and N1 are integers greater than 1; and sending the N1 precoded signals. A transmitting end introduces a phase offset between two transmit antenna ports in a precoding process, so that equivalent inter-stream interference is optimal after channel equalization is performed at a receiving end, to improve demodulation performance of the receiving end.

Abstract: This application provides a wireless communication method and apparatus. The wireless communication method includes: receiving indication information of a first pattern, where the first pattern is one of a plurality of patterns, each of the plurality of patterns indicates distribution of at least one resource in frequency domain, and the at least one resource includes at least one of a first resource, a second resource, and a third resource, where the first resource is a definitely available resource, the second resource is an unavailable resource, and availability of the third resource depends on a further indication of an upper-level node; and communicating with a second network device and/or a terminal device based on the first pattern.

Abstract: Disclosed are a method for the synthesis of roxadustat and an intermediate thereof, and an intermediate thereof. In particular, disclosed is a method for the synthesis of compound M1, the method comprising the following steps: carrying out a reaction as shown below between compound SM and compound SM-A under the action of an oxidizing agent. The method of the present invention uses cheap and easily available raw materials, has short reaction steps, produces a high yield, has simple and convenient post-treatment procedures, and is suitable for industrial production.

Abstract: A modulation and coding determining method and a related device, applied to a terminal device. The method includes: receiving scheduling information sent by a network device, where the scheduling information includes a modulation and coding scheme (MCS) index and an actual scheduled bandwidth; determining a modulation mode based on the MCS index; determining a coding parameter based on the modulation mode and the actual scheduled bandwidth; and performing channel coding on a signal based on the coding parameter to obtain a coded signal. The coding parameter may be determined based on the scheduling information, and coding is performed based on the coding parameter, so as to improve spectral efficiency.

Abstract: This application discloses example power control methods and apparatuses. One example method includes receiving, by a first node, first information sent by a second node, where the first information is used to determine a first transmit power, where the first transmit power is a power used when the first node sends downlink information to the second node through a first link, where the first link is a link between the first node and the second node, and where the first node is an upper-level device of the second node. The first node can then determine the first transmit power based on the first information.