Data transmission method, terminal, and base station in LAA-LTE system
摘要
說(shuō)明書
As can be seen from that, if the downlink data transmission configuration is a normal cyclic prefix, the last OFDM symbol of the first slot refers to a seventh OFDM symbol of the first slot, which is also a seventh OFDM symbol included in the first subframe, and the second last OFDM symbol of the first slot refers to a sixth OFDM symbol of the first slot, which is also a sixth OFDM symbol included in the first subframe. If the downlink data transmission configuration is an extended cyclic prefix, the last OFDM symbol of the first slot refers to a sixth OFDM symbol of the first slot, which is also a sixth OFDM symbol included in the first subframe, and the second last OFDM symbol of the first slot refers to a fifth OFDM symbol of the first slot, which is also a fifth OFDM symbol included in the first subframe. A process of analysis for a case in which the downlink data transmission configuration is an extended cyclic prefix is the same as above, and details are not described herein.
Besides, when the first subframe is a partial subframe, to reduce complexity, for data transmission of the first subframe, reference may be made to a data resource mapping manner supported by a downlink pilot timeslot (DwPTS). The DwPTS is a structure in time division duplexing (TDD) and LTE systems, and the DwPTS is included in a special subframe. A frame structure in an existing TDD LTE system includes a downlink subframe, a special subframe, and an uplink subframe. An example in which a radio frame includes two special subframes is used for description below, as shown in
