Method for transmitting control information and apparatus for same

摘要

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for transmitting uplink control information in the wireless communication system, which supports carrier aggregation and operates by a TDD, and comprises the steps of: deciding HARQ-ACK bit numbers for each cell from a plurality of cells; composing a HARQ-ACK payload comprising HARQ-ACK bit(s) for each of the plurality of cells; and transmitting the HARQ-ACK payload from a subframe n through a PUSCH.

主权项

1. A method for transmitting uplink control information in a wireless communication system supporting carrier aggregation and operating in a time division duplex (TDD), the method comprising:
determining the number of per-cell hybrid automatic repeat request-acknowledgement (HARQ-ACK) bits for each cell included in a plurality of cells; configuring a HARQ-ACK payload including a plurality of per-cell HARQ-ACK bit(s); and transmitting the HARQ-ACK payload in a subframe n through a physical uplink shared channel (PUSCH), wherein, when the plurality of cells do not include a cell to which transmission timing according to a specific uplink-downlink (UL-DL) configuration is applied, the number of per-cell HARQ-ACK bits for each cell is determined using a value of min(W, Mc), wherein, when the plurality of cells include one or more cells to which transmission timing according to the specific UL-DL configuration is applied, the number of per-cell HARQ-ACK bits for each cell is determined using a value of min(W+4┌(Umax−W)/4┐, Mc), and wherein W denotes a value indicated by a 2-bit uplink downlink assignment index (UL DAI) field corresponding to the PUSCH, Mc denotes the number of downlink subframes corresponding to the uplink subframe n for each cell, Umax denotes a maximum value from among the numbers of downlink signals requiring HARQ-ACK responses per cell, and ┌ ┐ denotes a ceiling function.