Abstract:
This application provides a method and device for generating a subframe, a method for determining a subframe and a user equipment. The method for generating a subframe includes: determining, by a first device, patterns of at least two special subframes used in a broadcast control channel modification period, where guard period GP durations of the at least two special subframes are different; and generating, by the first device, the at least two special subframes. The method enhances flexibility and improves a system resource utilization rate.
Abstract:
Embodiments of the present invention provide a wireless communication method, an apparatus, and a system. The method includes: receiving, by UE in a fixed downlink subframe whose subframe number is i−KUL, at least one TPC command sent by a base station, where the at least one TPC command is carried on a PDCCH whose format is a DCI format 3/3A, and the at least one TPC command includes a TPC command of an uplink signal that is sent in an uplink subframe whose subframe number is i; determining, by the UE according to the TPC command of the uplink signal that is sent in the uplink subframe whose subframe number is i, a problem that in a scenario in which a dynamic TDD uplink-downlink subframe configuration is applied, a base station fails to receive an uplink signal.
Abstract:
The present invention discloses a method and an apparatus for transmitting control signaling. The method includes: determining that a physical downlink shared channel PDSCH transmission scheme for a non-backward compatible component carrier is a user equipment-specific reference signal UE RS-based non-precoding matrix indicator Non-PMI feedback transmission scheme or a UE RS-based up to 8 layer transmission scheme; and sending downlink control information DCI to a UE, where the DCI is used to indicate the determined PDSCH transmission scheme. The apparatus includes a determining module and a first sending module. The method and apparatus in embodiments of the present invention can expand application scenarios of the non-backward compatible component carrier, increase spectrum utilization of the system, and avoid a system capacity decrease problem caused by limitations on the application scenarios of the non-backward compatible component carrier.
Abstract:
Embodiments of the present invention provide methods for transmitting and receiving a control channel, a base station, and a user equipment, which relate to the communication field, and can solve a transmission problem of available changing transmission resources caused by introduction of an E-PDCCH. A method for configuring a control channel resource includes: determining, by a base station according to a system configuration and/or user configuration, resource elements REs included in an extended control channel element E-CCE, and transmitting an extended physical downlink control channel E-PDCCH to a user equipment, where the E-PDCCH is carried by the E-CCE; and receiving, by the user equipment, the E-PDCCH, and obtaining the REs included in the E-CCE, and receiving, over the REs included in the E-CCE, the E-PDCCH transmitted by the base station. The embodiments of the present invention are used for configuring and detecting a control channel resource.
Abstract:
The present invention provides a method for sending and receiving control information, an apparatus and a communication system. The method for sending control information includes: setting respective control bits in a downlink control information (DCI) format to generate control information applied by a network side to a terminal, wherein indication information indicating whether to swap a corresponding relationship between a transmission block and a codeword is not carried in a control bit in the DCI format, if a dedicated demodulation reference signal used to demodulate data is preconfigured by the network side for the terminal and respective codewords correspond to the same number of layers; and the indication information is carried in a control bit in the DCI format, if the dedicated demodulation reference signal used to demodulate data is not preconfigured by the network side for the terminal; and sending the generated control information to the terminal.
Abstract:
The present invention discloses a method, system and apparatus of multi-subframe scheduling. The method of multi-subframe scheduling comprises: sending a terminal a continuous scheduling indication, a first Hybrid Automatic Repeat Request (HARQ) process number corresponding to a first scheduled subframe, and a scheduling configuration parameter of multi-subframe scheduling; acquiring a second HARQ process number corresponding to a currently-scheduling subframe according to the first HARQ process number corresponding to the first scheduled subframe and the continuous scheduling indication, and performing a data packet transmission of the corresponding second HARQ process number in the currently-scheduling subframe by using the scheduling configuration parameter, each scheduled subframe of the multi-subframe scheduling carrying one data packet, and each scheduled subframe of the multi-subframe scheduling using the scheduling configuration parameter. The embodiments of the present invention may save control signaling overhead of the system and improve spectrum efficiency of the system.
Abstract:
The present invention discloses a method and a terminal for receiving and sending scheduling information, and relates to the field of communications technologies. The method comprises: obtaining, by a terminal, transmission mode information of each carrier of N carriers configured by a network device, where N is a natural number greater than 1; determining a set of candidate downlink control information DCI formats according to the transmission mode information, where the set of candidate DCI formats includes at least a first DCI format and a second DCI format, where a physical downlink control channel PDCCH corresponding to the first DCI format carries scheduling information of at least two carriers of the N carriers, and a PDCCH corresponding to the second DCI format carries scheduling information of one carrier of the N carriers; and receiving and detecting a PDCCH corresponding to each DCI format in the set of candidate DCI formats.
Abstract:
Embodiments of the present invention disclose a method, an apparatus, and a system for transmitting data and relate to the communications field. In order to enable more flexible configuration of flexible subframes and increase downlink throughput, a technical solution provided in the present invention is as follows: configuring an HARQ synchronization attribute of a data packet, where the HARQ synchronization attribute includes synchronous HARQ or asynchronous HARQ; configuring an HARQ process ID of the data packet when the HARQ synchronization attribute is configured to asynchronous HARQ; and sending downlink control information for scheduling the data packet to a user equipment.
Abstract:
The present invention provides a method, a base station, and a user equipment for feeding back ACK/NACK information for carrier aggregation. The method includes configuring a common field preset in DCI as at least one type of command field related to ACK/NACK feedback of at least two types of command fields related to ACK/NACK feedback, where the common field can be configured as the command fields related to ACK/NACK feedback; and sending the DCI to a user equipment, so that the user equipment feeds back ACK/NACK information according to the DCI.
Abstract:
The present disclosure relates to communication methods and apparatus. In one example method, a first control resource set is determined, where a quantity of symbols comprised in the first control resource set in time domain is a positive integer less than or equal to M, and M is an integer greater than 3. Control information is received on one or more resource elements in the first control resource set.