METHOD AND DEVICE FOR OPERATING MACHINE TYPE DEVICE IN WIRELESS COMMUNICATION SYSTEM
FIG3 is a diagram illustrating an L subframe structure that can be operated in an IoT communication system
FIG3 is a diagram illustrating an L subframe structure that can be operated in an IoT communication system. Referring to FIG3, an L subframe 310 that can be operated in an IoT communication system may include two L slots 315. Further, each L slot 315 may include two subframes 320. One subframe 320 may include two slots. Further, in the case of a normal CP, the slot 325 may include 6 symbols 334, whereas in the case of an extended CP, the slot 325 may include 5 symbols 344. The lengths of the respective symbols and CPs are the same as those as illustrated.
diagram
310
L subframe L-subframe
325
slot
5
may include only
4
is
2
Table
6
may include
0
antenna ports antenna port SFN
315
include two L slots each L slot
320
may include two subframes One subframe
['1. A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, a master information block, MIB, for a narrowband internet of things, NB-IoT, the MIB including at least one of first information on a sequence for a cell-specific reference signal and second information on a number of antenna ports for the cell-specific reference signal; receiving, from the base station, a system information block, SIB, for the NB-IoT, the SIB including third information on a power offset for a reference signal of the NB-IoT; and receiving, from the base station, at least one of the cell-specific reference signal and the reference signal of the NB-IoT based on at least one of the first information, the second information and the third information.', '3. The method of claim 1, wherein the second information indicates whether the number of antenna ports for the reference signal of the NB-IoT is either equal to a number of antenna ports for the cell specific reference signal or to']