Method of transceiving data via uplink channel for coverage expansion and apparatus thereof

1. A method of transceiving data via an uplink data channel for coverage expansion, the method comprising:

establishing, by a base station, a transmission mode of a user equipment as an uplink data channel enhancement transmission mode for uplink data channel coverage enhancement of the user equipment;

configuring a first downlink control information (DCI) format for the user equipment set with the uplink data channel enhancement transmission mode; and

transmitting the first DCI format via a downlink control channel,

wherein the first DCI format is a DCI format for the uplink data channel enhancement transmission mode for allocating uplink shared channel resources for the user equipment, and the first DCI format includes information for allocating a hybrid automatic repeat request (HARD) process number and information for setting a repetition number, and

wherein when a transmission mode of the user equipment is the uplink data channel enhancement transmission mode, the user equipment monitors the first DCI format in a specific search space without monitoring a second DCI format, wherein the second DCI format is a DCI format for a user equipment configured for an uplink data channel normal transmission mode.

2. The method according to claim 1 , wherein the uplink data channel enhancement transmission mode is established through specific higher layer signaling of the user equipment.

3. The method according to claim 1 , wherein the specific search space of the user equipment is a UE specific search space, and the user equipment decodes the first DCI formation in the UE specific search space without decoding a second DCI format.

4. The method according to claim 3 , wherein the first DCI format is configured by modifying the second DCI format to additionally include an HARQ process number and a repetition number.

5. A method of transceiving data via an uplink data channel for coverage expansion, the method comprising:

establishing a transmission mode for transmitting an uplink data channel;

when the transmission mode is an uplink data channel enhancement transmission mode, monitoring a downlink control channel to receive a first downlink control information (DCI) format, and when the transmission mode is an uplink data channel normal mode, monitoring the downlink control channel to receive a second DCI format; and

receiving one of the first DCI format and the second DCI format via the downlink control channel,

wherein the first DCI format is a DCI format for the uplink data channel enhancement transmission mode for allocating uplink shared channel resources for the user equipment, and the first DCI format includes information for allocating a hybrid automatic repeat request (HARQ) process number and information for setting a repetition number, and

when a transmission mode of the user equipment is the uplink data channel enhancement transmission mode, the user equipment monitors the first DCI format in a specific search space without monitoring a second DCI format, wherein the second DCI format is a DCI format for a user equipment configured for an uplink data channel normal transmission mode.

6. The method according to claim 5 , wherein the uplink data channel enhancement transmission mode is established by specific higher layer signaling of a user equipment.

7. The method according to claim 5 , wherein the specific search space of the user equipment is a UE specific search space, and the user equipment decodes the first DCI formation in the UE specific search space without decoding a second DCI format.

8. The method according to claim 7 , wherein the first DCI format is configured by modifying the second DCI format to include a hybrid automatic repeat request (HARQ) process number and a repetition number.

9. A base station for transceiving data via an uplink data channel for coverage expansion, comprising:

a controller configured to establish an uplink data channel enhancement transmission mode for uplink data channel coverage enhancement of a user equipment and configures a first downlink control information (DCI) format for the user equipment set with the uplink data channel enhancement transmission mode; and

a transmitter configured to transmit the first DCI format via a downlink control channel,

wherein the first DCI format is a DCI format for the uplink data channel enhancement transmission mode for allocating uplink shared channel resources for the user equipment, and the first DCI format includes information for allocating a hybrid automatic repeat request (HARQ) process number and information for setting a repetition number, and

when a transmission mode of the user equipment is the uplink data channel enhancement transmission mode, the user equipment monitors the first DCI format in a specific search space without monitoring a second DCI format, wherein the second DCI format is a DCI format for a user equipment configured for an uplink data channel normal transmission mode.

10. The base station according to claim 9 , wherein the uplink data channel enhancement transmission mode is established by specific higher layer signaling of the user equipment.

11. The base station according to claim 9 , wherein the specific search space of the user equipment is a UE specific search space, and the user equipment decodes the first DCI format in the UE specific search space without decoding a second DCI format.

12. The base station according to claim 11 , wherein the first DCI format is configured by adding a hybrid automatic repeat request (HARD) process number and a repetition number to the second DCI format.