Unlicensed band IoT systems

An apparatus of an eNodeB (eNB), the apparatus comprising:

• processing circuitry configured to:
• encode, for transmission to a multefire narrowband interne of things (NB-IoT) user equipment (UE), an anchor segment on an anchor channel in an unlicensed spectrum, the anchor channel comprising:
• if a 3N1 frame structure is used:
• a narrowband Primary Synchronization Signal (NPSS), a narrowband Secondary Synchronization Signal (NSSS), and a narrowband Physical Broadcast Channel (NPBCH) in a highest index carrier of contiguous narrowband anchor carriers and system information block (SIB) in a lowest index carrier of the anchor carriers, and
• a single narrowband carrier comprising the NPSS, NSSS, NPBCH and SIB if a 3N2 frame structure is used;
• and
• at least one of encode a data segment to or decode the data segment from the UE on a data channel in the unlicensed spectrum, the data channel being a single carrier other than the anchor carriers of the anchor channel that is configured to frequency hop during the data segment if the 3N1 frame structure is used and the single narrowband carrier if the 3N2 frame structure is used, and
• a memory configured to store information of the anchor segment.

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a multefire narrowband interne of things (NB-IoT) user equipment (UE), the one or more processors to configure the UE to, when the instructions are executed:

• receive from an evolved NodeB (eNB) an anchor segment on an anchor channel in an unlicensed spectrum, the anchor channel comprising:
• if a 3N1 frame structure is used:
• a narrowband Primary Synchronization Signal (NPSS) followed by a narrowband Secondary Synchronization Signal (NSSS) and followed by a narrowband Physical Broadcast Channel (NPBCH) in a highest index carrier of contiguous narrowband anchor carriers and system information block (SIB) in a lowest index carrier of the anchor carriers, and
• a single narrowband carrier comprising the NPSS, NSSS, NPBCH and SIB if a 3N2 frame structure is used;
• and
• at least one of transmit data to or receive data from the eNB during a data segment on a data channel in the unlicensed spectrum, the data channel being a single carrier other than the anchor carriers of the anchor channel that is during the data segment if the 3N1 frame structure is used and the single narrowband carrier if the 3N2 frame structure is used.