Reception method of MTC device
The present specification provides a reception method of a machine type communication (MTC) device. The reception method can comprise the steps of: receiving a control channel through the entire system bandwidth on first and second orthogonal frequency division multiplexing (OFDM) symbols of a subframe; and determining whether to receive a data channel only in a reduced bandwidth compared with the system bandwidth from the third symbol of the subframe. At this point, when the control channel does not continue up until a third symbol of the subframe, the data channel can be received in a reduced bandwidth compared with the system bandwidth from the third symbol of the subframe.
1. A method for receiving a downlink data channel, the method being performed by a low-cost/low-capability (LC) device, the method comprising:
receiving a downlink control information (DCI), which is repeated on a first plurality of downlink subframes, the DCI including a resource block assignment (RA) field including an N RB DL parameter;
interpreting the RA field in the DCI, the interpretation being performed in consideration that the N RB DL parameter indicates a reduced bandwidth for the LC device as a number of one or more resource blocks (RBs), the reduced bandwidth for the LC device being located within a downlink system bandwidth of a cell; and
receiving a downlink data channel, which is repeated on a second plurality of downlink subframes, on the one or more RBs identified by the interpreted RA field.
2. The method of claim 1 , wherein a location of the one or more RBs on which the downlink data channel is received is configured.
3. The method of claim 1 , wherein a location of the at least one or more RBs on which the downlink data channel is received is dynamically changeable.
4. The method of claim 1 , further comprising transmitting a channel quality indication (CQI) with respect to the reduced bandwidth for the LC device.
5. The method of claim 1 , wherein the reduced bandwidth for the LC device includes 6 RBs.
6. The method of claim 1 , further comprising acquiring information on a number of repetitions of the downlink data channel.
7. The method of claim 1 , wherein the downlink data channel includes a system information block (SIB).
8. The method of claim 7 , wherein the SIB includes information dedicated for the LC device.
9. A low-cost/low-capability (LC) device for receiving a downlink data channel, the LC device comprising:
a transceiving unit; and
a processor operatively connected to the transceiving unit and configured to:
receive a downlink control information (DCI), which is repeated on a first plurality of downlink subframes, the DCI including a resource block assignment (RA) field including an N RB DL parameter;
interpret the RA field in the DCI, the interpretation being performed in consideration that the N RB DL parameter indicates a reduced bandwidth for the LC device as a number of one or more resource blocks (RBs), the reduced bandwidth for the LC device being located within a downlink system bandwidth of a cell; and
receive a downlink data channel, which is repeated on a second plurality of downlink subframes, on one or more RBs identified by the interpreted RA field.
10. The LC device of claim 9 , wherein a location of the one or more RBs on which the downlink data channel is received is configured.
11. The LC device of claim 9 , wherein a location of the one or more RBs on which the downlink data channel is received is dynamically changeable.
12. The LC device of claim 9 , wherein the processor is further configured to transmit a channel quality indication (CQI) with respect to the reduced bandwidth for the LC device.
13. The LC device of claim 9 , wherein the reduced bandwidth for the LC device includes 6 RBs.
14. The LC device of claim 9 , wherein the processor is further configured to acquiring information on a number of repetitions of the downlink data channel.
15. The LC device of claim 9 , wherein the downlink data channel includes a system information block (SIB).
16. The LC device of claim 15 , wherein the SIB includes information dedicated for the LC device.