Abstract: A method for a multicast service is provided. In this example, the method includes receiving, by a user equipment (UE), a control format including a resource allocation field from a base station (BS), the resource allocation field indicating a starting resource block (RB) index and an RB range, obtaining a set of RBs allocated for a multicast physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) based on a starting RB location and the RB range; wherein the starting RB location is associated with the stating RB index and at least one of a reference RB location or an assigned sub-band; and transmitting or receiving, by the UE, data over at least one RB of the set of RBs allocated for the multicast PDSCH or PUSCH.

Abstract: Embodiments of the present invention relate to the field of communications technologies. The method includes: determining, according to a fractional physical resource block (F-PRB) resource index allocated to UE and according to a quantity of F-PRBs included in each physical resource block PRB pair, an antenna port used to send data to the UE; sending downlink control information (DCI) to the UE, where a transmission format of the DCI is DCI 1A, and carries the F-PRB resource index that is allocated to the UE; and sending the data to the UE by using the antenna port.

Abstract: This application provides a data transmission method and apparatus. The method performed by a network node includes: receiving an uplink data transmission request sent by a terminal, where the uplink data transmission request is used to request to allocate an uplink transmission resource; allocating an uplink transmission resource of a first subframe according to the uplink data transmission request, where the first subframe is an uplink subframe or a downlink subframe; sending scheduling control information to the terminal, where the scheduling control information is used to instruct the terminal to send data on the uplink transmission resource of the first subframe; and if the first subframe is a downlink subframe, stopping sending data in the first subframe, and receiving data on the uplink transmission resource of the first subframe.

Abstract: Embodiments of the present disclosure provide a method for detecting downlink control information. The method includes: determine a parameter A(c), according to an index number c of a physical resource set; determine a search space associated with the physical resource set, according to the parameter A(c), wherein the parameter A(c)=39827 if the index number c is a first index number, the parameter A(c)=39829 if the index number c is a second index number; detecting in the search space, downlink control information from a base station.

Abstract: A method and an apparatus for determining an RBG size are provided. In the method, a network device or a terminal determines an RBG size set, where the RBG size set may include one or more possible RBG sizes; and determines a first RBG size included in the RBG size set. The network device allocates a resource to the terminal by using the determined first RBG size. The terminal determines, based on the determined first RBG size, the resource allocated by the network device to the terminal.

Abstract: In a control channel resource transmission method, user equipment (UE) obtains a configuration parameter in a candidate control channel set according to a preset protocol and/or higher-layer signaling sent by a base station, where the higher-layer signaling is used to notify the configuration parameter. The UE determines an antenna port according to the obtained configuration parameter, and then receives, through the antenna port, a control channel or a control channel element sent by the base station. The base station determines the antenna port according to the same configuration parameter as that of the user equipment, and sends, by using the antenna port, the control channel or the control channel element to the user equipment.

Abstract: Methods and devices for configuring an initial active downlink bandwidth part as part of an initial access procedure are provided. In one provided method, a base station broadcasts a synchronization signal block (SSB) that includes a control resource set CORESET) configuration index. The CORESET configuration index is one of a plurality of CORESET configuration indexes, each CORESET configuration index being associated with a respective configuration of a CORESET. Each configuration includes a CORESET frequency size, a CORESET time duration, and a frequency offset of the CORESET with respect to the SSB selected from a set of predefined frequency offsets. The initial active downlink bandwidth part is defined as having the same frequency location and bandwidth as the CORESET. The base station transmits, as part of a physical downlink control channel (PDCCH) within the CORESET, information indicating scheduling of remaining minimum system information (RMSI) in a physical downlink shared channel (POSCH).

Abstract: A method and an apparatus for determining an RBG size are provided. In the method, a network device or a terminal determines an RBG size set, where the RBG size set may include one or more possible RBG sizes; and determines a first RBG size included in the RBG size set. The network device allocates a resource to the terminal by using the determined first RBG size. The terminal determines, based on the determined first RBG size, the resource allocated by the network device to the terminal.

Abstract: The time-frequency resources of a particular numerology may be used to transmit OFDM symbols that have a cyclic prefix that is longer than the cyclic prefix of other OFDM symbols. This may complicate alignment across different numerologies. Time-frequency resource partitions are disclosed herein that may assist in symbol alignment and/or subframe alignment across the different numerologies.

Abstract: Systems and methods are provided for configuring an alignment between various resource grids. A base station transmits alignment information between a first resource grid or a first transmission using the first resource grid, and a second resource grid and a third resource grid. The first resource grid uses a first sub-carrier spacing (SCS) from a first set of SCSs, the second resource grid uses a second SCS from a second set of SCSs, the third resource grid uses a third SCS from the second set of SCSs. The base station transmits a synchronization sequence block (SSB) using the first resource grid, and the base station transmits a first physical downlink shared channel (PDSCH) in assigned resource blocks using at least one of the second resource grid and the third resource grid. A user equipment receives the alignment information, and determines the resource grids based on the alignment information so as to be able to receive the transmitted resource blocks.

Abstract: Embodiments of the present invention provide a method for transmitting uplink data, user equipment, and a base station. The method includes: when user equipment UE correctly receives, in a subframe n, downlink control signaling used for instructing the UE to transmit a physical uplink shared channel PUSCH, determining, by the UE according to the downlink control signaling and a subframe bundling configuration, a bundled subframe for transmitting the PUSCH, where the subframe bundling configuration includes a quantity of bundled subframes; and transmitting the PUSCH in the bundled subframe. In the embodiments of the present invention, a bundled subframe is introduced, which increases scheduling resources for a PUSCH, and enhances coverage performance of a signal.

Abstract: This application provides a data transmission method and a communications apparatus. The method includes: receiving uplink resource configuration information including information about at least two uplink reference points, and one uplink reference point corresponds to one uplink carrier; and determining, based on the uplink resource configuration information, an uplink carrier on which an uplink transmission resource is located.

Abstract: This application provides a data communication method, an apparatus, and a non-transitory computer readable storage medium. In one embodiment, the base station sends a master information block comprising first information for determining a first location in frequency domain, sends a first demodulation reference signal usable for demodulating a first data channel that carries a system information block, wherein a first physical resource block index of the first demodulation reference signal is based on the first location, sends the system information block or radio resource control signaling comprising second information for determining a second location in frequency domain, and sends or receives a second demodulation reference signal usable for demodulating a second data channel other than the first data channel, wherein a second physical resource block index of the second demodulation reference signal is based on the second location.

Abstract: This disclosure provides a resource configuration method. The method includes: receiving, by a terminal, first indication information sent by a network device, where the first indication information is used to indicate S first time units and T second time units, when S?0, the first indication information further indicates an index value or an identifier of format information of the first time unit; and when T?0, the first indication information further indicates first set information of the second time unit, the first set information indicates a first set, and the first set includes index values or identifiers of at least two types of format information of the second time unit; and determining, by the terminal, the format information of the first time unit based on the index value or the identifier of the format information of the first time unit, or determining the first set based on the first set information.

Abstract: Methods and systems for group common control channel implementation and use are provided. An embodiment a method in a base station for signaling group common control channel information is provided. The method includes determining control information common to a group of user equipment (UEs), the control information comprising time-frequency locations for at least one of a plurality of data channels and a plurality of control channels. The control information formatted in a Downlink Control Information (DCI) format. The method also includes encoding the control information in a group common control channel to generate encoded control information. The method also includes transmitting the encoded control information to the group of UEs.

Abstract: A frequency domain resource adjustment and apparatus, and an indication information sending method and apparatus, and a system relate to the field of communications technologies. The method includes: determining, by a network device, to adjust a frequency domain resource of a terminal device from a first frequency domain resource to a second frequency domain resource; sending information about a guard time to the terminal device; determining, by the terminal device, the guard time based on the information about the guard time; and adjusting, by the terminal device, the first frequency domain resource to the second frequency domain resource within the guard time.

Abstract: This application provides a downlink control information transmission method, an apparatus, and a system. The method includes: sending, by a gNB, downlink control information (DCI) to UE on a first bandwidth resource, where the DCI is used for data transmission between the gNB and the UE on the first bandwidth resource or data transmission between the gNB and the UE on a second bandwidth resource; and if the DCI is used for data transmission between the gNB and the UE on the first bandwidth resource, a size of the DCI is L1_1, or if the DCI is used for data transmission between the gNB and the UE on the second bandwidth resource, a size of the DCI is L1_2, where L1_1 is equal to L1_2, and L1_1 and L1_2 are integers greater than or equal to 1.

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: Embodiments of the present invention provide a control channel resource transmission method including: obtaining, by a user equipment, a configuration parameter in a candidate control channel set according to a preset protocol and/or higher-layer signaling sent by a base station, where the higher-layer signaling is used to notify the configuration parameter; determining an antenna port according to the obtained configuration parameter; receiving, by using the antenna port, a control channel or a control channel element sent by the base station; and determining, by the base station, the antenna port according to the same configuration parameter as that of the user equipment, and sending, by using the antenna port, the control channel or the control channel element to the user equipment. The embodiments of the present invention are applicable to control channel resource transmission.

Abstract: Embodiments of the present invention disclose a PUSCH transmission method and apparatus. The method includes: sending, in a first subframe, downlink control signaling that instructs user equipment UE to transmit a physical uplink shared channel PUSCH, where the downlink control signaling carries downlink control information, and the downlink control information is used to indicate a subframe for transmitting the PUSCH, where the subframe for transmitting the PUSCH is any one of or any combination of N subframes, the N subframes include a special subframe, and N is an integer not less than 1; and receiving the PUSCH in the subframe indicated by the downlink control information. It can be seen that, in the embodiments of the present invention, a subframe in which a PUSCH is transmitted and that is indicated by downlink control information includes a special subframe; therefore, the special subframe can be scheduled to transmit the PUSCH.