Abstract: A resource indication method, a user equipment and a network device is disclosed. In an embodiment a method includes receiving, by user equipment, configuration information sent by a network device, wherein the configuration information comprises allocation information of frequency domain resources of a plurality of first system parameters and transmitting, by the user equipment, information corresponding to a physical channel and/or information corresponding to a physical signal on at least one resource element in a time-frequency resource corresponding to a frequency domain resource of at least one of the plurality of first system parameters, wherein the first system parameter comprises a first subcarrier spacing size, a cyclic prefix length, a transmission time interval length, a symbol length, or a symbol quantity.

Abstract: Methods, systems and apparatus for communications are provided. In the methods, a network device sends first indication information to a terminal device, where the first indication information indicates a first bandwidth part (BWP) that is to be activated, other than a primary BWP, to the terminal device, and the primary BWP is a BWP that remains activated between the terminal device and the network device. The network device communicates with the terminal device in an activated first BWP and the primary BWP.

Abstract: A method is based on data transmission in a multi-parameter system, where a plurality of parameters include a subcarrier spacing. The method includes: sending, by the multi-parameter system, data over a physical channel or a physical signal by using at least one subcarrier spacing.

Abstract: A reference signal sending method and apparatus, and a reference signal receiving method and apparatus are provided. The method includes: determining, by a network device, a first configuration of a first reference signal and a second configuration of a second reference signal, where the first configuration includes a first subcarrier spacing, and the second configuration includes a second subcarrier spacing; and sending, by the network device on a first subband, the first reference signal meeting the first configuration, and sending, on a second subband, the second reference signal meeting the second configuration, where a parameter configuration of the first subband is different from a parameter configuration of the second subband.

Abstract: This application provides a communications method, apparatus, and system. The communications method includes: obtaining first indication information and format information; and determining, based on a transmission direction that is of a sub-time unit in a time unit and that is indicated by the first indication information and a transmission direction that is of the sub-time unit and that is indicated by the format information, whether the time unit is an aggregation time unit. It is determined, based on the transmission direction that is of the sub-time unit in the time unit and that is configured in the first indication information and the transmission direction that is of the sub-time unit and that is configured in the format information, whether the time unit is an aggregation time unit.

Abstract: A method for determining a slot format and a device are disclosed, to determine an ECP slot format. The method for determining a slot format includes: obtaining first indication information, where the first indication information includes indication information of a slot format a, the slot format a is one of slot formats of a first-type slot, the first-type slot includes N symbols, and N is 14; and determining a slot format b of 2(?-?a) consecutive second-type slots based on a subcarrier spacing ?a applicable to the first indication information, a subcarrier spacing ? applicable to the second-type slot, and the indication information of the slot format a, where the second-type slot includes M symbols, and N is not equal to M.

Abstract: A method for indicating quasi co-location indication information and a device are provided, to diversify reference signal types and reference signal configuration information that are indicated by QCL. The method includes: generating, by a base station, reference signal configuration information; performing, by the base station based on the reference signal configuration information, quasi co-location QCL assumption on reference signals corresponding to at least two antenna ports in reference signals, to generate QCL indication information; and sending, by the base station, the QCL indication information to a terminal.

Abstract: This application discloses a resource configuration method, an apparatus, and a system, and relates to the field of communications technologies. The method includes: receiving PDCCH signaling; switching to a target uplink BWP; and sending a preamble sequence by using a PRACH resource included in the target uplink BWP, where the PDCCH signaling is used to trigger a random access procedure.

Abstract: A communication method and a communications apparatus are provided. The method includes: sending, by a network device, indication information to a terminal, where the indication information is used to indicate at least one second BP associated with a first BP; and performing signal transmission, by the network device, with the terminal on the first BP and the at least one second BP. It may be learned that the network device indicates, to the terminal by using the indication information, the at least one second BP associated with the first BP, so that the network device and the terminal can transmit signals on BPs that are associated with each other. In addition, there may be a plurality of second BPs associated with the first BP.

Abstract: A method, system, and device to obtain a basic subcarrier spacing, or a channel bandwidth, or a maximum transmission bandwidth, or a usable subcarrier spacing set via a predefined mapping rule is provided. In an embodiment, a method in a network component to determine a system numerology includes determining, by the network component, one or more subcarrier spacing options from a candidate subcarrier spacing set that is associated with a carrier frequency band. The method also includes transmitting, by the network component, a signal indicating to one or more UEs one or more subcarrier spacing options from the candidate subcarrier spacing set.

Abstract: This application relates to the field of communications technologies, and discloses a bandwidth indication method and apparatus, to provide a solution of indicating, by a base station, an allocated bandwidth part to a terminal when the terminal does not know a carrier bandwidth. The method is: determining, by the base station, a virtual bandwidth allocated to the terminal, where the virtual bandwidth is a part of a carrier bandwidth, and a bandwidth allocated to the terminal falls within the virtual bandwidth; and sending, by the base station, position information of the virtual bandwidth to the terminal, where the position information is used to indicate a position of the virtual bandwidth.

Abstract: A resource indication method, a device, and a system relate to the field of communications technologies. The method includes: allocating, by a base station, a BP to a terminal device, and sending, to the terminal device, a first message indicating a resource position of the BP; and receiving, by the terminal device, the first message sent by the base station, and then determining the resource position of the BP based on resource position information of at least one sub-BP, where the BP includes the at least one sub-BP, the BP is not greater than a maximum bandwidth supported by the terminal device, and the first message includes the resource position information of the at least one sub-BP. The BP is allocated by using a sub-BP as a granularity, so that signaling overheads can be reduced while a requirement for more flexible resource allocation is satisfied.

Abstract: This application discloses a resource configuration method, a method for determining a bandwidth part, a method for indicating a bandwidth part, and a device. The method for indicating a bandwidth part includes: determining, by a base station, the bandwidth part based on a mapping relationship between a first carrier bandwidth and a first bandwidth part set and/or a mapping relationship between a capability bandwidth of a terminal device and a second bandwidth part set, where the first bandwidth part set includes a plurality of bandwidth parts, the first bandwidth part set includes the bandwidth part, the second bandwidth part set includes a plurality of bandwidth parts, and the second bandwidth part set includes the bandwidth part; and indicating, by the base station, the bandwidth part to the terminal device.

Abstract: A method, system, and device to obtain a basic subcarrier spacing, or a channel bandwidth, or a maximum transmission bandwidth, or a usable subcarrier spacing set via a predefined mapping rule is provided. In an embodiment, a method in a network component to determine a system numerology includes determining, by the network component, one or more subcarrier spacing options from a candidate subcarrier spacing set that is associated with a carrier frequency band. The method also includes transmitting, by the network component, a signal indicating to one or more UEs one or more subcarrier spacing options from the candidate subcarrier spacing set.

Abstract: A resource indication method, a user equipment and a network device is disclosed. In an embodiment a method includes receiving, by user equipment, configuration information sent by a network device, wherein the configuration information comprises allocation information of frequency domain resources of a plurality of first system parameters and transmitting, by the user equipment, information corresponding to a physical channel and/or information corresponding to a physical signal on at least one resource element in a time-frequency resource corresponding to a frequency domain resource of at least one of the plurality of first system parameters, wherein the first system parameter comprises a first subcarrier spacing size, a cyclic prefix length, a transmission time interval length, a symbol length, or a symbol quantity.

Abstract: A reference signal sending method and apparatus, and a reference signal receiving method and apparatus are provided. The method includes: determining, by a network device, a first configuration of a first reference signal and a second configuration of a second reference signal, where the first configuration includes a first subcarrier spacing, and the second configuration includes a second subcarrier spacing; and sending, by the network device on a first subband, the first reference signal meeting the first configuration, and sending, on a second subband, the second reference signal meeting the second configuration, where a parameter configuration of the first subband is different from a parameter configuration of the second subband.

Abstract: The present invention discloses a method for indicating quasi co-location indication information and a device, to diversify reference signal types and reference signal configuration information that are indicated by QCL. The method includes: generating, by a base station, reference signal configuration information; performing, by the base station based on the reference signal configuration information, quasi co-location QCL assumption on reference signals corresponding to at least two antenna ports in reference signals, to generate QCL indication information; and sending, by the base station, the QCL indication information to a terminal.

Abstract: A method is based on data transmission in a multi-parameter system, where a plurality of parameters include a subcarrier spacing. The method includes: sending, by the multi-parameter system, data over a physical channel or a physical signal by using at least one subcarrier spacing.

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: A method, system, and device to obtain a basic subcarrier spacing, or a channel bandwidth, or a maximum transmission bandwidth, or a usable subcarrier spacing set via a predefined mapping rule is provided. In an embodiment, a method in a network component to determine a system numerology includes determining, by the network component, one or more subcarrier spacing options from a candidate subcarrier spacing set that is associated with a carrier frequency band. The method also includes transmitting, by the network component, a signal indicating to one or more UEs one or more subcarrier spacing options from the candidate subcarrier spacing set.