Method and apparatus for transmitting and receiving downlink control information in wireless communication system

A method performed by a base station in a wireless communication system, the method comprising:

• transmitting, to a terminal, configuration information including information indicating a scheduling cell;
• generating control information based on the configuration information;
• and
• transmitting, to the terminal, the control information,
• wherein the control information includes a carrier indicator field corresponding to the scheduling cell,
• wherein a cyclic redundancy check (CRC) of the control information is scrambled with a configured scheduling—radio network temporary identifier (CS-RNTI) and a new data indicator (NDI) field in the control information is set to 0, and
• wherein a downlink (DL) semi-persistent scheduling (SPS) or an uplink (UL) grant type 2 configured for the scheduling cell is released based on special fields in the control information being set to predetermined values.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a controller configured to:
• control the transceiver to receive, from a base station, configuration information including information indicating a scheduling cell,
• monitor control information based on the configuration information,
• identify a cyclic redundancy check (CRC) of the control information and a new data indicator (NDI) field in the control information, in case that a downlink (DL) semi-persistent scheduling (SPS) or an uplink (UL) grant type 2 is configured for the scheduling cell, wherein the control information includes a carrier indicator field corresponding to the scheduling cell,
• identify whether the DL SPS or the UL grant type 2 is released for the scheduling cell based on special fields in the control information, in case that the CRC of the control information is scrambled with a configured scheduling—radio network temporary identifier (CS-RNTI) and the NDI field in the control information is set to 0, and
• release the DL SPS or the UL grant type 2 for the scheduling cell, based on the special fields being set to predetermined values.

A base station in a wireless communication system, the base station comprising:

• a transceiver;
• and
• a controller configured to:
• control the transceiver to transmit, to a terminal, configuration information including information indicating a scheduling cell,
• generate control information based on the configuration information, and
• control the transceiver to transmit, to the terminal, the control information,
• wherein the control information includes a carrier indicator field corresponding to the scheduling cell,
• wherein a cyclic redundancy check (CRC) of the control information is scrambled with a configured scheduling — radio network temporary identifier (CS-RNTI) and a new data indicator (NDI) field in the control information is set to 0, and
• wherein a downlink (DL) semi-persistent scheduling (SPS) or an uplink (UL) grant type 2 configured for the scheduling cell is released based on special fields in the control information being set to predetermined values.