Inter-frequency inter-public land mobile network (plmn) discovery

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:

• process, a serving PLMN system information block (SIB)19, received from an eNodeB, 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;
• and
• 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.

At least one non-transitory machine readable storage medium having instructions embodied thereon for performing inter-frequency and inter-public land mobile network (PLMN) discovery, the instructions when executed by one or more processors and memory at a user equipment (UE) perform the following:

• processing, a serving PLMN system information block (SIB)19, received from an eNodeB, for a carrier frequency of a serving PLMN of the UE;
• acquiring inter-frequency and inter-PLMN discovery system information acquisition assistance signaling information from the SIB19;
• and
• processing, 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.