Techniques to facilitate V2X identifier-based transport types of a geographical network layer protocol

An apparatus for wireless communication at a transmitting user equipment (UE), comprising:

• memory;
• and
• at least one processor coupled to the memory, the at least one processor configured to:
• receive a message based on a geographical network layer protocol (GNLP), the message including a GNLP header;
• populate the GNLP header to indicate that the message is associated with a single-hop transport type, the single-hop transport type including a unicast message, a groupcast message, or a broadcast message, wherein to populate the GNLP header, the at least one processor is configured to:
• encode a header type field of the GNLP header with a first value associated with the message;
• and
• encode a header sub-type field of the GNLP header with a second value based on a cast-type associated with a single-hop transmission message;
• and
• transmit the message via sidelink to a receiving UE.

A method of wireless communication at a transmitting user equipment (UE), comprising:

• receiving a message based on a geographical network layer protocol (GNLP), the message including a GNLP header;
• populating the GNLP header to indicate that the message is associated with a transport type including a unicast message or a groupcast message, wherein populating the GNLP header includes:
• setting a header type field of the GNLP header to a first value associated with one of a topologically scoped unicast message or a topologically scoped groupcast message;
• and
• transmitting the message via sidelink to a receiving UE.

A method of wireless communication at a transmitting user equipment (UE), comprising:

• receiving a message based on a geographical network layer protocol (GNLP), the message including a GNLP header;
• populating the GNLP header to indicate that the message is associated with a single-hop transport type, the single-hop transport type including a unicast message, a groupcast message, or a broadcast message, wherein populating the GNLP header includes:
• setting a header type field of the GNLP header to a first value associated with the message;
• and
• setting a header sub-type field of the GNLP header to a second value based on a cast-type associated with a single-hop transmission message;
• and
• transmitting the message via sidelink to a receiving UE.

An apparatus for wireless communication at a receiving user equipment (UE), comprising:

• memory;
• and
• at least one processor coupled to the memory, the at least one processor configured to:
• receive, from a transmitting UE, a message via sidelink, the message based on a geographical network layer protocol (GNLP) and including a GNLP header, the GNLP header including a header type field including a first value associated with one of a topologically scoped unicast message or a topologically scoped groupcast message;
• and
• use the GNLP header to determine that the message is associated with a transport type including a unicast message or a groupcast message.

An apparatus for wireless communication at a receiving user equipment (UE), comprising:

• memory;
• and
• at least one processor coupled to the memory, the at least one processor configured to:
• receive, from a transmitting UE, a message via sidelink, the message based on a geographical network layer protocol (GNLP) and including a GNLP header, the GNLP header including a header type field including a first value associated with a single-hop transmission message and a header sub-type field of the GNLP header with a second value based on a cast-type associated with the single-hop transmission message;
• and
• use the GNLP header to determine that the message is associated with a single-hop transport type, the single-hop transport type including a unicast message, a groupcast message, or a broadcast message.