A method of receiving, by a user equipment, LTE, a plurality of physical downlink shared channels, PDSCHs, in a wireless communication system, the method comprising: receiving (S2501, S2502) configuration information including (i) information for configuring 2 groups of slots to receive the plurality of PDSCHs using 2 transmission configuration indication, TCI, states and (ii) information for a plurality of TCI states; receiving information for the 2 TCI states related to the 2 groups of slots among the plurality of TCI states; and receiving the plurality of PDSCHs in the 2 groups of slots using the 2 TCI states, wherein based on a number of slots of the 2 groups of slots is equal to 2: a first group of slots includes one odd numbered slot and a second group of slots includes one even numbered slot, and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and wherein based on the number of the slots of the 2 groups of slots is larger than 2: the configuration information further includes mapping pattern information for a mapping pattern of the 2 TCI state to the slots of the 2 groups of slots, based on the mapping pattern configured to a first mapping pattern, the first group of slots includes only at least two odd numbered slots and the second group of slots includes only at least two even numbered slots and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and based on the mapping pattern configured to a second mapping pattern, the first group of slots includes (4k-3) th slot and (4k-2) th slot and the second group of slots includes (4k-1) th slot and th slot, the k is positive integer, and the first TCI state is applied to the first group of slots and the second TCI state is applied to the second group of slots. receiving (S2501, S2502) configuration information including (i) information for configuring 2 groups of slots to receive the plurality of PDSCHs using 2 transmission configuration indication, TCI, states and (ii) information for a plurality of TCI states; receiving information for the 2 TCI states related to the 2 groups of slots among the plurality of TCI states; and receiving the plurality of PDSCHs in the 2 groups of slots using the 2 TCI states, wherein based on a number of slots of the 2 groups of slots is equal to 2: a first group of slots includes one odd numbered slot and a second group of slots includes one even numbered slot, and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and a first group of slots includes one odd numbered slot and a second group of slots includes one even numbered slot, and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and wherein based on the number of the slots of the 2 groups of slots is larger than 2: the configuration information further includes mapping pattern information for a mapping pattern of the 2 TCI state to the slots of the 2 groups of slots, based on the mapping pattern configured to a first mapping pattern, the first group of slots includes only at least two odd numbered slots and the second group of slots includes only at least two even numbered slots and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and based on the mapping pattern configured to a second mapping pattern, the first group of slots includes (4k-3) th slot and (4k-2) th slot and the second group of slots includes (4k-1) th slot and th slot, the k is positive integer, and the first TCI state is applied to the first group of slots and the second TCI state is applied to the second group of slots. the configuration information further includes mapping pattern information for a mapping pattern of the 2 TCI state to the slots of the 2 groups of slots, based on the mapping pattern configured to a first mapping pattern, the first group of slots includes only at least two odd numbered slots and the second group of slots includes only at least two even numbered slots and a first TCI state is applied to the first group of slots and a second TCI state is applied to the second group of slots, and based on the mapping pattern configured to a second mapping pattern, the first group of slots includes (4k-3) th slot and (4k-2) th slot and the second group of slots includes (4k-1) th slot and th slot, the k is positive integer, and the first TCI state is applied to the first group of slots and the second TCI state is applied to the second group of slots.