Enrichment of monitoring user plane data using PFCP monitoring

An apparatus comprising a processor and a memory, wherein the memory includes programmed instructions that, when executed by the processor, cause the apparatus to:

• capture an establishment request message transmitted over a packet forwarding control protocol (PFCP) interface;
• extract a first key from a fully qualified session endpoint identifier (F-SEID) of the establishment request message;
• capture an establishment response message transmitted over the PFCP interface;
• extract a second key from an SEID of the establishment response message and a third key from an F-SEID of the establishment response message, wherein the second key matches the first key;
• capture a first message over the PFCP interface;
• extract a fourth key from an SEID of the first message, wherein the fourth key matches the third key;
• capture a second message over the PFCP interface;
• extract a fifth key from an SEID of the second message, wherein the fifth key matches the first key;
• extract (a) a permanent ID from one of the establishment request message, the establishment response message, the first message, or the second message, (b) an uplink (UL) general packet radio service (GPRS) tunneling protocol (GTP)-user plane (U) tunnel endpoint identifier (TEID) from a packet detection rule (PDR) of one of the establishment request message, the establishment response message, the first message, or the second message, and (c) a downlink (DL) GTP-U TEID from a forwarding action rule (FAR) of one of the establishment request message, the establishment response message, the first message, or the second message;
• store the first key, the third key, permanent ID, the UL GTP-U TEID, and the DL GTP-U TEID in a PFCP protocol data unit (PDU) session record;
• store the permanent ID in a session details record;
• capture a third message transmitted over a user plane interface after the first message is transmitted;
• extract a first GTP-U TEID from the third message, wherein the first GTP-U TEID matches one of the UL GTP-U TEID or the DL GTP-U TEID;
• and
• retrieve the session details record using the first GTP-U TEID by retrieving the permanent ID from the PFCP PDU session record using the first GTP-U TEID and retrieving the session details record associated with the permanent ID.

A method comprising:

• capturing an establishment request message transmitted over a packet forwarding control protocol (PFCP) interface;
• extracting a first key from a fully qualified session endpoint identifier (F-SEID) of the establishment request message;
• capturing an establishment response message transmitted over the PFCP interface;
• extracting a second key from an SEID of the establishment response message and a third key from an F-SEID of the establishment response message, wherein the second key matches the first key;
• capturing a first message over the PFCP interface;
• extracting a fourth key from an SEID of the first message, wherein the fourth key matches the third key;
• capturing a second message over the PFCP interface;
• extracting a fifth key from an SEID of the second message, wherein the fifth key matches the first key;
• extracting (a) a permanent ID from one of the establishment request message, the establishment response message, the first message, or the second message, (b) an uplink (UL) general packet radio service (GPRS) tunneling protocol (GTP)-user plane (U) tunnel endpoint identifier (TEID) from a packet detection rule (PDR) of one of the establishment request message, the establishment response message, the first message, or the second message, and (c) a downlink (DL) GTP-U TEID from a forwarding action rule (FAR) of one of the establishment request message, the establishment response message, the first message, or the second message;
• storing the first key, the third key, permanent ID, the UL GTP-U TEID, and the DL GTP-U TEID in a PFCP protocol data unit (PDU) session record;
• storing the permanent ID in a session details record;
• capturing a third message transmitted over a user plane interface after the first message is transmitted;
• extracting a first GTP-U TEID from the third message, wherein the first GTP-U TEID matches one of the UL GTP-U TEID or the DL GTP-U TEID;
• and
• retrieving the session details record using the first GTP-U TEID by retrieving the permanent ID from the PFCP PDU session record using the first GTP-U TEID and retrieving the session details record associated with the permanent ID.