Abstract:
This application discloses a method for a hybrid automatic repeat request (HARQ) feedback of downlink data. A terminal receives downlink data of a physical downlink shared channel (PDSCH) and downlink data of a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH) from a base station. Then the terminal sends a hybrid automatic repeat request (HARQ) feedback codebook to the base station. A size of the HARQ feedback codebook is based on a state of a semi-persistent scheduling (SPS) PDSCH transmission and a total downlink assignment indicator in the downlink data of the PDCCH or the EPDCCH, and the HARQ feedback codebook comprises a HARQ bit for the SPS PDSCH transmission.
Abstract:
A method and an apparatus for transmitting uplink control information (UCI) are provided. The method comprises: determining a first quantity of bits of a to-be-transmitted HARQ; and transmitting the HARQ when it is determined that the first quantity of bits is less than a threshold and a sum of the first quantity of bits and a second quantity of bits is greater than the threshold. Therefore, the HARQ is directly transmitted when it is determined that the sum of the first quantity of bits and the second quantity of bits is greater than the threshold. Accordingly, a disadvantage of a low downlink throughput can be avoided.
Abstract:
Embodiments of the present disclosure provide a method for a transmission of uplink control information (UCI), such as hybrid automatic repeat request (HARQ) information. A base station sends first indication information to a user equipment (UE), to instruct the UE to dynamically determine the UCI according to the first indication information, and the base station allocates a physical uplink control channel (PUCCH) resource to the UE to transmit the UCI. The embodiments of the present disclosure may be used to implement a feedback of the UCI information in a carrier aggregation scenario, thereby improving performance of transmitting valid UCI information.
Abstract:
This application discloses a method for a hybrid automatic repeat request (HARQ) feedback of downlink data. A terminal receives downlink data of a physical downlink shared channel (PDSCH) and downlink data of a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH) from a base station. Then the terminal sends a hybrid automatic repeat request (HARQ) feedback codebook to the base station. A size of the HARQ feedback codebook is based on a state of a semi-persistent scheduling (SPS) PDSCH transmission and a total downlink assignment indicator in the downlink data of the PDCCH or the EPDCCH, and the HARQ feedback codebook comprises a HARQ bit for the SPS PDSCH transmission.
Abstract:
An apparatus for band-limited frequency division multiplexing for uplink transmission to a base station or access point, particularly from an IoT device, comprises a signal modulator to transmit a signal over a set of contiguous equally spaced frequency sub-carriers ranging from a lowest frequency sub-carrier via intermediate sub-carriers to a highest frequency sub-carrier. The signal modulator contains a filter to apply asymmetric filtering over the range of the frequency sub-carriers, thereby to reduce a peak-to-average power ratio of the transmitted signal.
Abstract:
The present disclosure relates to a method and an apparatus for sending and receiving a downlink data block of a packet data service. A network side adds indication information of downlink data modulation modes to a downlink data block, where the downlink data block includes first information and second information; the network performs symbol mapping processing on the first information by using a first modulation mode to obtain a first modulated signal; the network performs symbol mapping processing and data pre-processing on the second information by using a second modulation mode to obtain a second modulated signal; the network combines these two modulated signals to obtain an aggregate modulated signal; and the network sends the aggregate modulated signal. With the present disclosure, throughput of downlink data is increased while a USF compatibility between more types of low-capability mobile terminals is considered.
Abstract:
A communication method and an apparatus are provided. The method includes: A communication apparatus may send uplink capability information to a network device, where the uplink capability information includes at least one of the following: a maximum quantity of uplink carriers configured for the communication apparatus, a maximum quantity of uplink carriers supported by the communication apparatus, and a maximum quantity of channels supported by the communication apparatus. Further, the communication apparatus receives first information from the network device, where the first information indicates an uplink carrier used for uplink transmission, and performs uplink transmission with the network device on the uplink carrier. The communication apparatus may be a terminal device.
Abstract:
This application discloses a secondary cell activation method and an apparatus, and relates to the communication field, so that a terminal device can report a channel state information measurement result in a secondary cell activation phase to a network device. The secondary cell activation method includes: A terminal device receives first indication information, where the first indication information is used to indicate an uplink resource for reporting a channel state information measurement result in a secondary cell activation phase; and the terminal device sends the channel state information measurement result to a network device based on the first indication information.
Abstract:
This application provides a communication method and apparatus. The method includes: A terminal receives first configuration information from a network device, and determines a time unit aggregation based on the first configuration information, where the time unit aggregation includes at least one time unit. The terminal receives control information from the network device, and determines at least one first time subunit and at least one second time subunit in the time unit aggregation based on the control information. The terminal receives, in the at least one first time subunit, data corresponding to a first transport block, and receives, in the at least one second time subunit, data corresponding to a second transport block.
Abstract:
This application discloses a secondary cell activation method and an apparatus, and relates to the communication field, so that a terminal device can report a channel state information measurement result in a secondary cell activation phase to a network device. The secondary cell activation method includes: A terminal device receives first indication information, where the first indication information is used to indicate an uplink resource for reporting a channel state information measurement result in a secondary cell activation phase; and the terminal device sends the channel state information measurement result to a network device based on the first indication information.