Resource allocation method for sub-PRB uplink transmission

An apparatus, comprising:

• at least one processor;
• and
• at least one non-transitory memory including computer program code,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
• receiving an indication, wherein the apparatus was previously configured for using physical uplink shared channel sub-physical resource block resources such that available physical resource blocks in at least one subframe or at least one narrowband are reorganized into a number of sub-physical resource blocks, wherein the indication is configured to indicate an availability of a sub-physical resource block resource allocation, wherein the indication is configured to indicate a sub-physical resource block resource allocation, wherein the indication is comprised in one bit, wherein the bit is set, wherein for the apparatus being in an idle mode, the indication is comprised in at least one of
• a random access response grant,
• a medium access control subheader, or
• a medium access control random access response;
• and
• determining whether to use the sub-physical resource block resource allocation based on the received indication.

A computer program embodied on a non-transitory computer-readable storage medium, comprising:

• code for configuring using physical uplink shared channel sub-physical resource block resources such that available physical resource blocks in at least one subframe or at least one narrowband are reorganized into a number of sub-physical resource blocks, wherein an indication is configured to indicate an availability of a sub-physical resource block resource allocation, wherein the indication is configured to indicate the sub-physical resource block resource allocation, wherein the indication is comprised in one bit, wherein the bit is set;
• code for receiving a signal comprising the indication, wherein for an idle mode, the indication is comprised in at least one of
• a random access response grant,
• a medium access control subheader, or
• a medium access control random access response;
• and
• code for, based on the received indication, determining whether to use the sub-physical resource block resource allocation.