Method and device for transmitting or receiving data in next generation wireless access network

A method of transmitting/receiving data by a base station in a radio access network, the method comprising:

• configuring a time domain scheduling unit made up of at least one OFDM symbol for each user equipment;
• allocating a downlink data channel transmission resource with the time domain scheduling unit for a first user equipment;
• and
• without using a predetermined part of the downlink data channel transmission resource for transmission to the first user equipment, allocating the predetermined part of the downlink data channel transmission resource as a downlink data channel transmission resource for a second user equipment.

A method of transmitting/receiving data by a user equipment in a radio access network, the method comprising:

• transmitting/receiving the data through an allocated resource with a time domain scheduling configured for each user equipment from a base station;
• receiving a pre-emption indication information indicating resource not used for transmission to the user equipment within the time domain scheduling unit including the allocated resource;
• and
• stopping transmitting/receiving the data according to the pre-emption indication information.