Abstract: Embodiments of this application provide a signal transmission method and apparatus. The method includes: receiving, by a terminal device, configuration information sent by a network device, where the configuration information is used to instruct the terminal device to send a reference signal, and a resource used to transmit the reference signal is determined based on a public cell identity of a cell to which the terminal device belongs; and sending, by the terminal device, the reference signal based on the configuration information by using the resource. According to the signal transmission method and apparatus in the embodiments of this application, an existing reference signal can be used to perform interference/channel measurement between terminal devices, so that a terminal device on a receiving side can distinguish between interference cells while reference signal utilization is improved.

Abstract: A resource configuration method, an apparatus, and a system are disclosed. The method includes: determining a reserved resource element (RE) in a resource unit, where the reserved RE is included in a reserved resource; and transmitting data on all or some REs other than the reserved resource. The resource unit includes X resource blocks (RBs) in frequency domain and includes Y symbols in time domain, where X and Y are positive integers. According to the resource configuration method provided in the present disclosure, a data conflict between different terminals during data transmission can be reduced, and resource utilization can be improved.

Abstract: Example control channel resource indication methods, user equipment, and network devices are described. One example method includes sending a preamble signal sequence by a user equipment. The user equipment receives higher layer signaling corresponding to the preamble signal sequence. The higher layer signaling is indicated by downlink control information carried in a common search space. A time-frequency resource detected by the user equipment when determining a control channel includes the common search space and user equipment-dedicated search space. The user equipment determines frequency domain resource location information of the user equipment-dedicated search space based on the higher layer signaling. The frequency domain resource location information includes a quantity of frequency domain resource units occupied by the user equipment-dedicated search space in frequency domain and a location of the frequency domain resource unit.

Abstract: A communication method and a device are provided, to reduce power consumption of a terminal device and reduce system overheads. A communication method can include, at least, determining, by a terminal device, that a plurality of BPs are activated, where the plurality of BPs are in a same carrier, the plurality of BPs include a first BP and a second BP, a first CSS is configured in the first BP, and common DCI is configured in the first CSS. The communication method can further include detecting, by the terminal device, the common DCI only in a second CSS when the second CSS is configured in the second BP, where the common DCI is configured in the second CSS.

Abstract: A communications method is provided, to satisfy a requirement of indicating a random access resource dynamically and effectively reduce resource conflicts caused when PRACH resource configuration is performed. The method includes: sending, by a network device, a first message and a second message to user equipment, where the first message is used to indicate a set of candidate time domain resource units of a physical random access channel of the user equipment, the second message carries first indication information, and the first indication information is used to indicate a time domain resource unit format of a first candidate time domain resource unit in the plurality of candidate time domain resource units; and receiving, by the network device from the user equipment based on the time domain resource unit format, a random access preamble in the first candidate time domain resource unit.

Abstract: A method includes: communicating, by a base station, first UE specific information of UE with the UE in a UE source operating bandwidth resource; and sending, by the base station, information about a UE target operating bandwidth resource of the UE to the UE in a UE calibration bandwidth resource of the UE, where the UE target operating bandwidth resource is used by the base station to communicate second UE specific information of the UE with the UE, and the UE source operating bandwidth resource is not completely the same as the UE calibration bandwidth resource.

Abstract: Various embodiments provide a frequency hopping processing method and a device. In those embodiments, a symbol used to transmit a demodulation reference signal of a shared channel can be determined by a communications device. A time domain frequency hopping location of the shared channel based on the symbol used to transmit the demodulation reference signal can be determined by the communications device. In this way, frequency hopping processing of a shared channel in an NR network is implemented.

Abstract: This application provides a resource configuration method, a terminal, and a network device. The method includes: determining a second frequency domain resource based on a physical random access channel frequency domain resource used by a terminal to send a random access preamble, where the second frequency domain resource is used to transmit at least one of physical signal information or physical channel information. In embodiments of this application, when the network device configures a plurality of uplink frequency domain resources used to send a random access message 3, the terminal may determine a to-be-used uplink frequency domain resource according to the method provided in this application.

Abstract: A communication method, a terminal, and a network device are provided. The method includes: receiving, by a terminal, a downlink reference signal sent by a network device in a first cell, and determining a downlink path loss estimate between the terminal and the first cell based on the downlink reference signal; and sending, by the terminal, an uplink signal in a second cell, where uplink transmit power used by the terminal to send the uplink signal is determined based on the downlink path loss estimate.

Abstract: A method, system, and device for resource block (RB) indexing in a user equipment (UE) is provided. In an embodiment, the method includes obtaining, at the UE, a UE-independent frequency reference point. The method also includes determining, by the UE, a UE-independent index of an RB according to the UE-independent frequency reference point.

Abstract: A capability configuration method and an apparatus are provided. The method includes: sending, by a network device, capability configuration information to a terminal device, where the capability configuration information is used to indicate a capability corresponding to an air-interface slice supported by the terminal device, and the capability corresponding to the air-interface slice supported by the terminal device is determined from a capability candidate set reported by the terminal device; and communicating, by the network device, with the terminal device by using the air-interface slice supported by the terminal device.

Abstract: A method includes: configuring, by a network device, M BPs for at least one terminal device, where the M BPs are located on one frequency domain resource; determining, by the network device, first indication information related to X BPs in the M BPs, where the first indication information includes at least one field, each field is used to indicate transmission types in at least one time unit on the X BPs; sending, by the network device, the first indication information to the at least one terminal device, where the at least one terminal device includes a first terminal device; and sending, by the network device, second indication information to the first terminal device, where the second indication information is used to indicate an index relationship between that at least one of N BPs configured for the first terminal device and the at least one field in the first indication information.

Abstract: Embodiments of this application provide a communication method, a communications apparatus, and a communications system, to determine a physical resource block (PRB) grid when a center frequency of a synchronization signal (SS) is inconsistent with a center frequency of a carrier. The method includes: receiving, by a terminal, an SS from a network device; determining, by the terminal, a first PRB grid based on the SS; receiving, by the terminal, first indication information from the network device, where the first indication information is used to indicate a first frequency offset between the first PRB grid and a second PRB grid; and determining, by the terminal, the second PRB grid based on the first PRB grid and the first frequency offset.

Abstract: Various embodiments provide a signal transmission method and apparatus, and is applied to a multi-band communications system. Under the method, a terminal reports bandwidth capability information of a first frequency band in a plurality of frequency bands to a radio access network node. An operating band of the terminal includes the first frequency band, the bandwidth capability information of the first frequency band indicates a bandwidth capability of the terminal in the first frequency band, the bandwidth capability in the first frequency band is not less than a first threshold, and the first threshold is determined based on a maximum bandwidth capability of the terminal, the first frequency band, or a subcarrier spacing of the first frequency band. The terminal can send or receive a signal on a resource allocated by the radio access network node based on the bandwidth capability information.

Abstract: Embodiments of this application disclose a wireless communication method and an apparatus, to improve robustness of data transmission between a terminal device and a node device. The method in the embodiments of this application includes. A terminal device incorrectly receives first data in a first cell, where the first cell is a first primary cell. The terminal device sends first indication information in a second cell, where the second cell is a secondary cell or a second primary cell, and the first indication information is used to indicate that the first data is incorrectly received in the first cell, or is used to request transmission of the first data in the second cell. The terminal device receives the first data in the second cell.

Abstract: Embodiments of the present invention provide a data transmission method, a network device, and user equipment, including: sending, by the network device, first indication information and second indication information to the user equipment, where the first indication information is used to indicate a frequency domain resource of a physical random access channel of the user equipment, the second indication information is physical layer control signaling, the second indication information is used to indicate a time domain resource of the physical random access channel, and a random access resource corresponding to the frequency domain resource and the time domain resource is used to carry random access information of the user equipment. In the embodiments of the present invention, a resource of a random access channel is dynamically indicated by using the physical layer control signaling, to improve random access resource allocation flexibility.

Abstract: The present disclosure relates to data transmission methods, terminal devices, and base station systems. In one example method, a base station sends information about a first control resource set and information about a second control resource set to a terminal device. The terminal device detects first control information in a first control channel candidate set, and detects second control information in a second control channel candidate set.

Abstract: This application provides a wireless communication method and apparatus. The method includes: A second network device sends, to a first terminal device and at least one network device, first indication information used to indicate to send a common pilot signal on a common transmission resource, so that the first terminal device sends the common pilot signal to the at least one network device on the common transmission resource, and each network device receives and demodulates the common pilot signal, and adjusts a receive beam in a direction of the first terminal device based on the common pilot signal.

Abstract: This application provides a resource allocation method which includes: determining a first location of a first frequency domain resource; determining a second location of at least one bandwidth part based on the first location and an offset between the first location and the second location; determining the at least one bandwidth part based on the second location of the at least one bandwidth part and a bandwidth size of the at least one bandwidth part; and transmitting at least one of physical signal information and physical channel information in a first bandwidth part, where the first bandwidth part includes one or more bandwidth parts in the at least one bandwidth part.

Abstract: Embodiments of this application provide a communication method, a communications apparatus, and a communications system, to determine a physical resource block (PRB) grid when a center frequency of a synchronization signal (SS) is inconsistent with a center frequency of a carrier. The method includes: receiving, by a terminal, an SS from a network device; determining, by the terminal, a first PRB grid based on the SS; receiving, by the terminal, first indication information from the network device, where the first indication information is used to indicate a first frequency offset between the first PRB grid and a second PRB grid; and determining, by the terminal, the second PRB grid based on the first PRB grid and the first frequency offset.