METHOD AND DEVICE FOR OPERATING MACHINE TYPE DEVICE IN WIRELESS COMMUNICATION SYSTEM
FIG11 is a diagram illustrating an example of one configuration of a downlink frame in an IoT communication system
FIG11 is a diagram illustrating an example of one configuration of a downlink frame in an IoT communication system. Referring to FIG11, a structure in which PBCH 1110, SIB1 1115, PSS 1120, and SSS 1125 are transmitted for the IoT terminal. In an embodiment, the frame structure in accordance with signal transmission and reception for the IoT terminal may be applied in a similar manner to that in the LTE system. In order to avoid potential collision with the MBSFN, the PSS 1120 may be transmitted on subframe 9, and may be repeatedly transmitted every 20 ms. Further, the PBCH 1110 may be transmitted on subframe 9, and may be repeatedly transmitted every 10 ms. If there is a dedicated resource for transmission of the SIB1 1115, it may be deployed in subframe 4 that is not occupied by the SSS. In the case of the above-described configuration, as a service method together with the MBSFN transmission of the LTE system, another deployment is also possible in consideration of the rule for avoiding collision with the existing LTE. Further, the resources remaining after the transmission may be shared for the PDCCH and PDSCH transmission.
diagram
1120
PSS
5
may include only
1125
SSS
1
Table
9
subframe
1115
SIB1
2
Table
4
is
6
may include
0
antenna ports antenna port SFN
1110
PBCH
['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']