GigaSMART 4G RAN Correlation

A Radio Access Network (RAN) is part of a telecommunications system that connects individual radio devices to the core mobile network through radio connections.

RAN uses GTP correlation. It exposes RAN data fields from control plane (S11), for example:

  • E-UTRAN Cell Global Identifier (ECGI)
  • Tracking Area Identity (TAI)
  • Tracking Area Code (TAC)

The above identifiers are extracted from the User location Information (ULI) and sends them to flow sampling and whitelisting.

The RAN correlation for 4G CUPS flow sampling filters require the ECGI, TAC and PLMN-ID values.

For 4G RAN based whitelisting requires ECGI includes the PLMN Id and the E-UTRAN Cell ID.

RAN data fields are available for filtering. GigaVUE‑FM enables you to configure RAN based correlation for both 4G CUPS and 5G CUPS in the Flow Sample and Whitelist Maps. In CUPS solution, you can configure the RAN Correlation properties while creating and editing the properties in Flow Sample and Whitelist maps in Global policies for both CPN and UPN.

Keep in mind the following rules and notes when you work with the RAN Correlation feature:

  • RAN correlation is not supported for the 3G.

  • You must configure separate flow sampling map for 3G sampling parameters and 4G RAN sampling parameters to support 3G correlation and 4G RAN correlation in the same GSgroup.