Example 34 includes an apparatus of a user equipment (UE), the UE configured to perform inter-frequency and inter-public land mobile network (PLMN) discovery, the apparatus comprising one or more processors and memory configured to: receive, from an eNodeB, a serving PLMN system information block (SIB)19 for a carrier frequency of a serving PLMN of the UE; acquire inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information from the SIB19; process, using the inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information, a non-serving PLMN SIB19 for one or more carriers frequency of a non-serving PLMN to enable the UE to perform device-to-device (D2D) discovery with a UE in the non-serving PLMN according to the inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information.
Example 35 includes the apparatus of example 34, wherein the one or more processors and memory are further configured to identify inter-frequency and inter-PLMN discovery announcement rate information and monitoring control configuration information for the one or more carrier's frequency of the non-serving PLMN.
Example 36 includes the apparatus of example 34, wherein the inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information includes inter-frequency scheduling information that includes carrier bandwidth, power control information, system information radio network temporary identifier (SI-RNTI), SIB1 scheduling information, and SIB19 scheduling information.