Example 45 includes the apparatus of example 34, wherein the one or more processors and memory are further configured to: perform inter-PLMN discovery announcement and monitoring using PLMN identity dependent scheduling for discovery announcement across a plurality of carrier frequencies; perform inter-PLMN discovery announcement and monitoring using randomization of discovery announcement and discovery monitoring intervals based on one or more of a plurality of different identities; or use a physical structure of a discovery signaling comprising a demodulation reference signals (DMRS) sequence, a DMRS orthogonal cover code sequence, DMRS cyclic shift, a discovery hopping within discovery pool, a discovery signal physical structure that is a function of a PLMN identity, or a combination thereof.