Neighbor cell measurement and reselection for narrowband operation

An apparatus for wireless communications by a user equipment (UE), comprising:

• at least one processor;
• and
• memory coupled to the at least one processor, the memory storing instructions for the at least one processor to cause the UE to:
• receive, while communicating in a serving cell, information regarding one or more transmission deployment mode parameters of at least one neighbor cell;
• determine that a downlink valid bit map is not included in the information regarding one or more transmission deployment mode parameters;
• and
• perform a neighbor cell search with measurement of narrowband reference signals (NRS) based at least in part on the determining, wherein perform the neighbor cell search comprises maintain a list of recent measurements for the serving cell and the at least one neighbor cell and compare a difference between a median of the list for the serving cell and a median of the list for the at least one neighbor cell against a threshold.

A apparatus for wireless communications by a user equipment (UE), comprising:

• means for receiving, while communicating in a serving cell, information regarding one or more transmission deployment mode parameters of at least one neighbor cell;
• means for determining that a downlink valid bit map is not included in the information regarding one or more transmission deployment mode parameters;
• and
• means for performing a neighbor cell search with measurement of narrowband reference signals (NRS) based at least in part on the determining, wherein performing the neighbor cell search comprises maintaining a list of recent measurements for the serving cell and the at least one neighbor cell and comparing a difference between a median of the list for the serving cell and a median of the list for the at least one neighbor cell against a threshold.

A non-transitory computer-readable medium for wireless communication, by a user equipment (UE), having instructions stored thereon for at least one processor to cause the UE to:

• receive, while communicating in a serving cell, information regarding one or more transmission deployment mode parameters of at least one neighbor cell;
• determine that a downlink valid bit map is not included in the information regarding one or more transmission deployment mode parameters;
• and
• perform a neighbor cell search with measurement of narrowband reference signals (NRS) based at least in part on the determining, wherein perform the neighbor cell search comprises maintain a list of recent measurements for the serving cell and the at least one neighbor cell and compare a difference between a median of the list for the serving cell and a median of the list for the at least one neighbor cell against a threshold.