Signal transmission/reception method between terminal and base station in wireless communication system supporting narrowband internet of things, and device supporting same

Abstract

Disclosed are a signal transmission/reception method between a terminal and a base station in a wireless communication system supporting narrowband Internet of Things (NB-IoT), and a device supporting same. More specifically, disclosed is a description of a signal transmission/reception method between a terminal and a base station when a wireless communication system supporting NB-IoT is a time division duplex (TDD) system.

What is claimed is: 
     
         1 . A method for receiving System Information Block Type 1-Narrowband (SIB1-NB) by a user equipment (UE) in a wireless communication system, the method comprising:
 receiving a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB);   obtaining scheduling information for the SIB1-NB from the MIB-NB; and   receiving the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is received via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is received via a subframe having the second subframe index.   
     
     
         2 . The method of  claim 1 , wherein a Narrowband Secondary Synchronization Signal (NSSS) is received via a subframe having the first subframe index of a radio frame, and
 wherein the radio frame is different from a radio frame in which the SIB1-NB is received.   
     
     
         3 . The method of  claim 1 , wherein a radio frame in which the SIB1-NB is received is determined based on SIB1-NB repetition information and Cell Identification (Cell ID), and
 wherein the SIB1-NB repetition information is obtained from the MIB-NB and the Cell ID is obtained from a Narrowband Secondary Synchronization Signal (NSSS).   
     
     
         4 . The method of  claim 1 , wherein, based on the MIB-NB including information related to reception of the SIB1-NB via a non-anchor carrier, the SIB1-NB is received via a non-anchor carrier. 
     
     
         5 . The method of  claim 4 , wherein a Narrowband Primary Synchronization Signal (NPSS), a Narrowband Secondary Synchronization Signal (NSSS) and the NPBCH are received via an anchor carrier. 
     
     
         6 . The method of  claim 1 , wherein the first subframe index and the second subframe index are different from each other. 
     
     
         7 . A user equipment (UE) for receiving System Information Block Type 1-Narrowband (SIB1-NB) in a wireless communication system, the UE comprising:
 at least one transceiver;   at least one processor; and   at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:   receiving, via the at least one transceiver, a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB);
 obtaining scheduling information for the SIB1-NB from the MIB-NB; and 
   receiving, via the at least one transceiver, the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is received via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is received via a subframe having the second subframe index.   
     
     
         8 . The UE of  claim 7 , wherein a Narrowband Secondary Synchronization Signal (NSSS) is received via a subframe having the first subframe index of a radio frame, and
 wherein the radio frame is different from a radio frame in which the SIB1-NB is received.   
     
     
         9 . The UE of  claim 7 , wherein a radio frame in which the SIB1-NB is received is determined based on SIB1-NB repetition information and Cell Identification (Cell ID), and
 wherein the SIB1-NB repetition information is obtained from the MIB-NB and the Cell ID is obtained from a Narrowband Secondary Synchronization Signal (NSSS).   
     
     
         10 . The UE of  claim 7 , wherein, based on the MIB-NB including information related to reception of the SIB1-NB via a non-anchor carrier, the SIB1-NB is received via a non-anchor carrier. 
     
     
         11 . The UE of  claim 10 , wherein a Narrowband Primary Synchronization Signal (NPSS), a Narrowband Secondary Synchronization Signal (NSSS) and the NPBCH are received via an anchor carrier. 
     
     
         12 . The UE of  claim 7 , wherein the first subframe index and the second subframe index are different from each other. 
     
     
         13 . An apparatus for receiving System Information Block Type 1-Narrowband (SIB1-NB) in a wireless communication system, the apparatus comprising:
 at least one processor; and   at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:   receiving a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB);   obtaining scheduling information for the SIB1-NB from the MIB-NB; and   receiving the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is received via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is received via a subframe having the second subframe index.   
     
     
         14 . A computer readable storage medium storing at least one computer program comprising instructions that, when executed by at least one processor, cause the at least one processor to perform operations, the operations comprising:
 receiving a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB);   obtaining scheduling information for the SIB1-NB from the MIB-NB; and   receiving the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is received via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is received via a subframe having the second subframe index.   
     
     
         15 . A method for transmitting System Information Block Type 1-Narrowband (SIB1-NB) by a base station (BS) in a wireless communication system, the method comprising:
 transmitting a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB), wherein the MIB-NB includes scheduling information for the SIB1-NB; and   transmitting the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is transmitted via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is transmitted via a subframe having the second subframe index.   
     
     
         16 . A base station (BS) for transmitting System Information Block Type 1-Narrowband (SIB1-NB) in a wireless communication system, the BS comprising:
 at least one transceiver;   at least one processor; and   at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:   transmitting, via the at least one transceiver, a Narrowband Physical Broadcast Channel (NPBCH) including Master Information Block-Narrowband (MIB-NB), wherein the MIB-NB includes scheduling information for the SIB1-NB; and   transmitting, via the at least one transceiver, the SIB1-NB based on the scheduling information,   wherein, based on the scheduling information informing a first subframe index, the SIB1-NB is transmitted via a subframe having the first subframe index, and   wherein, based on the scheduling information informing a second subframe index, the SIB1-NB is transmitted via a subframe having the second subframe index.