Abstract:
This application provides a control information transmission method, a base station, and a terminal. The method includes: extracting a radio resource from a preset resource block set, and sending control information in a first time period by using the radio resource. The base station includes a processor and a transmitter. The processor is configured to extract a radio resource from a preset resource block set, and the transmitter is configured to send control information in a first time period by using the radio resource. According to the control information transmission method provided in this application, the base station can send the control information in any time period, and the terminal can receive the control information in any time period, thereby shortening a time interval between two control information transmissions.
Abstract:
A method for selecting a transport format in an uplink multiple-input multiple-output system and a related method and a device are used by a user equipment to select a transport format in a case in which the user equipment is in a dual-stream transmission mode of the ULMIMO and inter-stream interference is considered.
Abstract:
A data transmission method and device, the method including obtaining, by a terminal device, a first resource and a second resource, where at least one first uplink transmission opportunity is configured for the first resource, a second uplink transmission opportunity is configured for the second resource, the first uplink transmission opportunity comprises X repeated first uplink transmission resources, the second uplink transmission opportunity comprises Y repeated second uplink transmission resources, and both X and Y are each integers greater than or equal to 1, and sending, by the terminal device, uplink data to a network device using the second uplink transmission opportunity in response to sending using N closest first uplink transmission opportunities before the second uplink transmission opportunity being blocked, where N is an integer greater than or equal to 1.
Abstract:
A communication method includes that when a physical downlink control channel (PDCCH) carrying downlink control information (DCI) is a first PDCCH candidate or a second PDCCH candidate, where the first PDCCH candidate and the second PDCCH candidate correspond to a same resource, and the first PDCCH candidate and a third PDCCH candidate belong to a PDCCH candidate group configured for PDCCH repetition transmission, a reference PDCCH candidate is determined according to the PDCCH candidate group, or the second PDCCH candidate is used as a reference PDCCH, so that a network device and a terminal have a consistent understanding of the reference PDCCH candidate.
Abstract:
A method for determining an HARQ-ACK codebook includes that a terminal determines, based on a time domain offset of HARQ-ACK feedback information, a DCI format set corresponding to the time domain offset, and determines a time domain location information set based on the DCI format set to determine a quantity of information bits of the HARQ-ACK codebook based on the time domain location information set.
Abstract:
This application relates to the field of communications technologies, and discloses a communication method and apparatus. The method includes: when a terminal device determines transmission statuses of N time-frequency resource groups based on transmission indication information sent by a network device, if a time-frequency resource group is separated into a former half and a latter half by one or more first symbols in time domain, the former half of the time-frequency resource group may be combined into a previous time-frequency resource group of the time-frequency resource group, or the latter half of the time-frequency resource group may be combined into a next time-frequency resource group of the time-frequency resource group, to determine a transmission status. This ensures continuity, in time domain, of the time-frequency resource group indicated by the transmission indication information, and can avoid unnecessary uplink transmission cancellation or downlink transmission interruption, thereby increasing a network capacity.
Abstract:
An information indication method is provided, including: A terminal-side device receives first higher layer signaling from a network-side device, where the first higher layer signaling is used to configure N bandwidth parts BWPs, and N is a positive integer. The terminal-side device receives downlink control information from the network-side device, where the downlink control information includes an indication field. When N is less than a maximum quantity of BWPs that can be configured through the first higher layer signaling when the terminal-side device is in a connected mode (for example, an RRC connected mode) or a maximum quantity of BWPs that can be determined by using candidate bit states of the indication field that is used to determine an active BWP and that is in the downlink control information, the indication field indicates a position of the active BWP located in an initial BWP and the N BWPs.
Abstract:
A radio access network device configures a first parameter and location indication information for a first terminal device. The first parameter is used to determine a data transmission resource of the first terminal device. The location indication information indicates a location of first retransmission scheduling information corresponding to the first terminal device in retransmission scheduling information. Then, the first terminal device sends uplink data to the radio access network device, and the radio access network device receives the uplink data. Afterwards, the radio access network device sends the retransmission scheduling information to the first terminal device. The first terminal device determines a retransmission resource based on the retransmission scheduling information, the location indication information, and the first parameter. Finally, the first terminal device retransmits the uplink data to the radio access network device by using the retransmission resource.
Abstract:
The present disclosure relates to channel state information transmission methods and apparatus. One example method includes receiving first higher layer signaling sent by a network device, where the first higher layer signaling is used to indicate a first physical uplink control channel, and the first physical uplink control channel is a channel used to periodically report channel state information (CSI), receiving downlink control information sent by the network device, where the downlink control information is used to schedule a physical downlink shared channel, and sending the CSI by using the first physical uplink control channel and a second physical uplink control channel, or sending the CSI by using a second physical uplink control channel.
Abstract:
Method is provided, including: determining, by a base station, a current time period in which an end moment of a current control channel is located in a first transmission time interval TTI, where the first TTI includes at least two time periods, and a start moment of a data channel corresponding to a control channel that ends in each of the at least two time periods is located in a different TTI; sending, by the base station to user equipment in the first TTI, control information carried on the current control channel, where the control information is configured to schedule a current data channel corresponding to the current control channel; determining, by the base station, a second TTI in which a start moment of the current data channel is located; and exchanging, by the base station, data of the current data channel with the user equipment in the second TTI.