PUCCH transmission method by MTC device
Disclosed is a method for transmitting a physical uplink control channel (PUCCH) by a machine type communication (MTC) device. The PUCCH transmission method comprises the steps of: receiving configuration for independent PUCCH resources at each repetition level of PUCCH; determining a PUCCH resource corresponding to a repetition level, on the basis of the configuration; and repeatedly transmitting the PUCCH, on the determined resource.
1. A method for transmitting a physical uplink control channel (PUCCH), the method performed by a wireless device and comprising:
transmitting repetitions of the PUCCH on a plurality of subframes; and
performing a frequency hopping for the PUCCH while transmitting the repetitions of the PUCCH,
wherein a location of a frequency region on which the PUCCH is transmitted is maintained during n subframes among the plurality of subframes, and
wherein the location of the frequency region on which the PUCCH is transmitted is not hopped per a slot in a subframe.
2. The method of claim 1 , wherein the location of the frequency region on which the PUCCH is transmitted is located on a subband within an uplink system bandwidth.
3. The method of claim 2 , wherein the frequency hopping is performed within the subband or in a unit of the subband.
4. The method of claim 1 , further comprising:
determining a number of the repetitions of the PUCCH according to a repetition level.
5. The method of claim 1 , wherein the repeated transmissions of the PUCCH are performed if the wireless device is located in a coverage enhancement region of a cell.
6. The method of claim 1 , further comprising:
receiving a configuration for a PUCCH resource,
wherein the configuration for the PUCCH resource is specified according a repetition level of the PUCCH; and
determining a corresponding PUCCH resource based on the configuration.
7. The method of claim 6 , wherein the configuration for the PUCCH resource includes cell-specific values.
8. The method of claim 7 , wherein the cell-specific values include at least one of:
a parameter for specifying a number of the PUCCHs distinguishable by a cyclic shift, a parameter for specifying a start location of the PUCCH resource including a hybrid automatic repeat request-acknowledgement (HARQ-ACK) and a parameter for specifying the number of physical resource blocks (PRBs) per a slot on which the PUCCH resource including a channel state information (CSI).
9. A wireless device for transmitting a physical uplink control channel (PUCCH), comprising:
a transceiver; and
a processor operatively connected to the transceiver and configured to:
transmit repetitions of the PUCCH on a plurality of subframes; and
perform a frequency hopping for the PUCCH while transmitting the repetitions of the PUCCH,
wherein a location of a frequency region on which the PUCCH is transmitted is maintained during n subframes among the plurality of subframes, and
wherein the location of the frequency region on which the PUCCH is transmitted is not hopped per a slot in a subframe.
10. The wireless device of claim 9 , wherein the location of the frequency region on which the PUCCH is transmitted is located on a subband within an uplink system bandwidth.
11. The wireless device of claim 10 , wherein the frequency hopping is performed within the subband or in a unit of the subband.
12. The wireless device of claim 9 , wherein the processor is further configured to:
determine a number of the repetitions of the PUCCH according to a repetition level.
13. The wireless device of claim 9 , wherein the repeated transmissions of the PUCCH are performed if the wireless device is located in a coverage enhancement region of a cell.