Technique for indicating multiple core networks in a message transmission

A method for wireless communications, comprising:

• receiving, by a user device from a base station, a system information block message, wherein the system information block message comprises:
• (1) a first field that includes cell access information for a first set of public land mobile networks (PLMNs) that provides access to an evolved pack core (EPC), the first field indicating whether a current cell is barred from providing network access to the user device in the EPC, and
• (2) a second field, separate from the first field, that includes cell access information for a second set of PLMNs that provides access to a Fifth-Generation (5G) core network, the second field indicating whether the current cell is barred from providing network access to the user device in the 5G core network;
• and
• selecting, based on the first and second fields of the system information block message, the EPC or the 5G core network for communication services.

A wireless communications apparatus comprising:

• a processor, and
• a memory including processor executable code, wherein the processor executable code upon execution by the processor configures the processor to:
• transmit, to a user device, a system information block message, wherein the system information block comprises:
• (1) a first field that includes cell access information for a first set of public land mobile networks (PLMNs) that provides access to an evolved packet core (EPC), the first field indicating whether current cell is barred from providing network access to the user device in the EPC, and
• (2) a second field, separate from the first field, that includes cell access information for a second set of PLMNs that provides access to a Fifth-Generation (5G) core network, the second field indicating whether the current cell is barred from providing network access to the user device in the 5G core network;
• and
• provide communication services to the user device according to the message.

A wireless communications apparatus comprising:

• a processor, and
• a memory including processor executable code, wherein the processor executable code upon execution by the processor configures the processor to:
• receive, from a base station, a system information block message, wherein the system information block message comprises:
• (1) a first field that includes cell access information for a first set of public land mobile networks (PLMNs) that provides access to an evolved pack core (EPC), the first field indicating whether current cell is barred from providing network access to the user device in the EPC, and
• (2) a second field, separate from the first field, that includes cell access information for a second set of PLMNs that provides access to a Fifth-Generation (5G) core network, the second field indicating whether the current cell is barred from providing network access in the 5G core network;
• and
• select, based on the first and second fields of the message, the EPC or the 5G core network for communication services.

A non-transitory computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to:

• transmit, to a user device, a system information block message, wherein the system information block message comprises:
• (1) a first field that includes cell access information for a first set of public land mobile networks (PLMNs) that provides access to an evolved packet core (EPC), the first field indicating whether current cell is barred from providing network access to the user device in the EPC, and
• (2) a second field, separate from the first field, that includes a list of cell access information for a second set of PLMNs that provides access to a Fifth-Generation (5G) core network, the second field indicating whether the current cell is barred from providing network access to the user device in the 5G core network;
• and
• provide communication services to the user device according to the message.

A non-transitory computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to:

• receive, from a base station, a system information block message, wherein the system information block message comprises:
• (1) a first field that including cell access information for a first set of public land mobile networks (PLMNs) that provides access to an evolved pack core (EPC), the first field indicating whether current cell is barred from providing network access to the user device in the EPC, and
• (2) a second field, separate from the first field, that includes cell access information for a second set of PLMNs that provides access to a Fifth-Generation (5G) core network, the second field indicating whether the current cell is barred from providing network access in the 5G core network;
• and
• select, based on the first and second fields of the message, the EPC or the 5G core network for communication services.