Method and apparatus for configuring bandwidth including direct current subcarrier for low cost user equipment in wireless communication system
A method and apparatus for allocating resources to a low cost user equipment (UE) in a wireless communication system is provided. A base station (BS) allocates resource blocks including a punctured direct current (DC) subcarrier to a low cost UE, and communicating with the low cost UE by using the allocated resource blocks. The allocated resource blocks may not be located at center of a set of resource blocks that the low cost UE can access at a given subframe.
1. A method for transmitting system information for a narrowband user equipment (UE) in a wireless communication system, the method comprising:
transmitting, by a base station (BS), the system information for the narrowband UE via a first narrowband in a first subfrarme; and
transmitting, by the BS, the system information for the narrowband UE via a second narrowband in a second subframe
wherein a frequency location of the first narrowband for the narrowband UE is determined by a cell identifier (ID), a system bandwidth, and information related to the first subframe, and
wherein a frequency location of the second narrowband for the narrowband UE is determined by the cell ID, the system bandwidth, and information related to a second subframe.
2. The method of claim 1 , wherein the system information for the narrowband UE is a system information block type-1 (SIB1) for the narrowband UE.
3. The method of claim 1 , wherein the frequency locations of the first narrowband and the second narrowband are determined further based on at least one of a subframe index or a system frame number (SFN).
4. The method of claim 1 , wherein each of the first narrowband and second narrowband include six physical resource blocks (PRBs).
5. The method of claim 1 , wherein the system information is transmitted via a physical downlink shared channel (PDSCH), and wherein the PDSCH is repeated periodically in every period of specific radio frames.
6. A method for receiving system information in a wireless communication system, the method comprising:
receiving, by a narrowband user equipment (UE) from a base station (BS), the system information via a first narrowband in a first subframe; and
receiving, by the narrowband UE from the BS, the system information via a second narrowband in a second subframe
wherein a frequency location of the first narrowband for the narrowband UE is determined by a cell identifier (ID), a system bandwidth, and information related to the first subframe, and
wherein a frequency location of the second narrowband for the narrowband UE is determined by the cell ID, the system bandwidth, and information related to a second subframe.
7. The method of claim 6 , wherein the system information for the narrowband UE is a system information block type-1 (SIB1) for the narrowband UE.
8. The method of claim 6 , wherein the frequency locations of the first narrowband and the second narrowband are determined further based on at least one of a subframe index or a system frame number (SFN).
9. The method of claim 6 , wherein each of the first narrowband and second narrowband include six physical resource blocks (PRBs).
10. The method of claim 6 , wherein the system information is transmitted via a physical downlink shared channel (PDSCH), and wherein the PDSCH is repeated periodically in every period of specific radio frames.
11. A base station (BS) in a wireless communication system, the BS comprising:
a memory;
a transceiver; and
a processor, coupled to the memory and the transceiver, that:
transmits the system information for the narrowband UE via a first narrowband in a first subfrarme, and
transmits the system information for the narrowband UE via a second narrowband in a second subframe,
wherein a frequency location of the first narrowband for the narrowband UE is determined by a cell identifier (ID), a system bandwidth, and information related to the first subframe, and
wherein a frequency location of the second narrowband for the narrowband UE is determined by the cell ID, the system bandwidth, and information related to a second subframe.
12. The BS of claim 11 , wherein the system information for the narrowband UE is a system information block type-1 (SIB1) for the narrowband UE.
13. The BS of claim 11 , wherein the frequency locations of the first narrowband and the second narrowband are determined further based on at least one of a subframe index or a system frame number (SFN).
14. The BS of claim 11 , wherein each of the first narrowband and second narrowband include six physical resource blocks (PRBs).
15. The BS of claim 11 , wherein the system information is transmitted via a physical downlink shared channel (PDSCH), and wherein the PDSCH is repeated periodically in every period of specific radio frames.