Method and apparatus for configuring frequency hopping pattern for MTC UE in wireless communication system
A method and apparatus for transmitting data to a machine type communication user equipment (MTC UE) in a wireless communication system is provided. A base station (BS) configures a frequency hopping in every specific number of subframes which corresponds to a frequency hopping granularity, and transmits data to the MTC UE by using the configured frequency hopping.
1. A method performed by a base station (BS) in a wireless communication system, the method comprising:
transmitting a configuration of a cell-specific frequency hopping pattern to a machine type communication user equipment (MTC UE) via system information;
allocating a physical downlink shared channel (PDSCH),
wherein a change in frequency location of the PDSCH, by a frequency hopping in every specific number of subframes, is related to a frequency hopping granularity and based on the cell-specific frequency hopping pattern; and
transmitting data to the MTC UE via the PDSCH,
wherein the frequency hopping granularity is configured based on a coverage enhancement (CE) level of the MTC UE.
2. The method of claim 1 , wherein the frequency hopping is configured in every specific number of subframes regardless of a new transmission or invalid subframes, not usable for the MTC UE.
3. The method of claim 1 , wherein the frequency location of the PDSCH is determined by a logical narrowband index.
4. The method of claim 1 , wherein the frequency location of the PDSCH is determined by at least one of a subframe number or a frame number.
5. The method of claim 1 , wherein the frequency hopping is configured based on a fixed offset.
6. The method of claim 1 , wherein the frequency hopping is configured over either two narrowbands or four narrowbands.
7. The method of claim 6 , wherein whether the frequency hopping is configured over either two narrowbands or four narrowbands is configured via a master information block (MIB) or a system information block (SIB).
8. A base station (BS) in a wireless communication system, the BS comprising:
a memory;
a transceiver; and
a processor, operatively coupled to the memory and the transceiver,
wherein the processor is configured to:
control the transceiver to transmit a configuration of a cell-specific frequency hopping pattern to a machine type communication user equipment (MTC UE) via system information,
allocate a physical downlink shared channel (PDSCH),
wherein a change in frequency location of the PDSCH, by a frequency hopping in every specific number of subframes, is related to a frequency hopping granularity and based on the cell-specific frequency hopping pattern, and
control the transceiver to transmit data to the MTC UE via the PDSCH,
wherein the frequency hopping granularity is configured based on a coverage enhancement (CE) level of the MTC UE.
9. The BS of claim 8 , wherein the frequency hopping is configured in every specific number of subframes regardless of a new transmission or invalid subframes, not usable for transmitting to the MTC UE.
10. The BS of claim 8 , wherein the frequency hopping is configured based on a fixed offset.
11. The BS of claim 8 , wherein the frequency hopping is configured over either two narrowbands or four narrowbands.
12. The BS of claim 8 , wherein whether the frequency hopping is configured over either two narrowbands or four narrowbands is configured via a master information block (MIB) or a system information block (SIB).