Abstract:
Various embodiments provide a method and apparatus for storing a code block. When the size of the buffer in the terminal device is smaller than the size of the buffer at the rate matching at the base station, the code block is stored in the buffer, which is used when the terminal device fails to decode the code block.
Abstract:
A data transmission method and a data transmission device for a TDD system are provided, so as to reduce the frequency hopping operations, reduce the retuning time, prolong a valid duration for the data transmission and reduce the time period for the data transmission, and reduce the power consumption. The data transmission method includes steps of: at a predetermined retuning start time point, adjusting, by a UE, a carrier frequency for data reception and transmission within a predetermined retuning duration so as to acquire the adjusted carrier frequency; and performing, by the UE, uplink data transmission and downlink data reception at the adjusted carrier frequency with a network device within a consecutive duration in accordance with a TDD uplink-downlink configuration. The consecutive duration is a duration from a current retuning end time point to a next retuning start time point.
Abstract:
Disclosed in the present invention are a downlink data repeat transmission method and device for addressing a problem in which, when resource mapping is performed in different subframes in a repeat transmission, the numbers of available REs are different, and as a result data cannot be combined when performing repeat transmission of multiple subframes. The method comprises: determining a subframe set of a repeat transmission physical downlink channel; in each subframe of the determined subframe set, and when performing a resource mapping on the physical downlink channel, starting mapping from a specific start character position in a first time slot of the current subframe and mapping to all resources except for a resource corresponding to a reference signal used for demodulation; and transmitting the physical downlink channel according to the resource mapping manner.
Abstract:
Disclosed are a method and a device for sending and receiving acknowledgement feedback information, which relate to the field of wireless communications, and are applicable to solving the problem of transmitting acknowledgement feedback information of downlink data in the case of aggregation of a time division duplex (TDD) carrier and a frequency division duplex (FDD) carrier. In this solution, a terminal receives configuration signaling sent by a network side, where the configuration signaling instructs to divide M downlink carriers for carrier aggregation into information about N downlink carrier groups, and to configure one uplink carrier for each downlink carrier group; the uplink carrier used for sending acknowledgement feedback information corresponding to downlink data is determined according to the configuration signaling, and the acknowledgement feedback information corresponding to the downlink data is sent to the network side according to a determination result after the downlink data is received. This application solves the problem of how to receive acknowledgement feedback information in the case of aggregation of the TDD carrier and the FDD carrier.