With mobile consumers’ expectations on the rise, new business models proliferate. Mobile Virtual Network Operator solutions must differentiate to stay competitive and maximize their offerings.
MVNOs wishing to offer subscribers high quality voice and/or data services can use YateUCN as a GMSC (voice), a GGSN (GPRS), or a PGW (LTE data).
YateUCN supports billing integration through CAMEL, RADIUS, and Diameter.
YateUCN, the unified core network for GSM/GPRS and LTE is a software implementation of the functions and protocols from the 2G and 4G LTE core layers on a commodity server. For GSM and GPRS, YateUCN performs the functions of the MSC, VLR, SGSN, GMSC, and GGSN. From 4G LTE, it acts as an MME, SGW, PGW, and PCRF.
YateUCN can be used to operate either all of these functions (for MNOs) or one specific function (for MVNOs). Each case scenario is presented below.
- YateUCN for voice (GMSC)
The GMSC (Gateway Mobile Switching Center) functionality serves to locate the subscriber’s HLR (Home Location Register) in a mobile-terminated call, and then to route the call. Based on the information from the originating MSC, YateUCN uses the HLR to find the MSC of the called subscriber; with the number assigned by the HLR, the GMSC then forwards the call to the destination MSC. As a GMSC, YateUCN also provides CAMEL support.
- YateUCN for data (GGSN and PGW in a single component)
In 2G networks, YateUCN as a GGSN (Gateway GPRS Support Node) is responsible for establishing and maintaining the user’s IP session and for storing billing information. It routes the IP packets to the SGSN in the MNO network over GTP-C. Establishing the data session in the YateUCN core network is independent of the radio network and is performed by the same component which can act either as a GGSN or as a PGW. If a session is initiated in GPRS, the GGSN (YateUCN) will connect to the SGSN over GTP-C v1.
In an LTE network, YateUCN can act as a PGW (PDN Gateway) to assign the IP address to the UE. YateUCN only communicates with the SGW in the operator’s network (over the S8 interface) and supports both Diameter and RADIUS to connect to the charging function in the network. If the session is started in LTE, YateUCN will act as a PGW and will connect to the SGW over GTP-C v2. It is also possible for a session to be started in LTE and continued in a 2G or 3G network.
- YateUCN for billing integration
YateUCN connects to any billing system used by the MVNO, for both voice and data sessions management. It supports the Diameter Ro interface for prepaid services and the Rf interface for postpaid billing. For real-time credit control over SIP, YateUCN implements the Diameter Credit-Control Application (RFC 4006) to connect to the MVNO’s Charging Server.
- YateUCN for SIP users
YateUCN also offers support for PC2Call registered users.
The unified core network, YateUCN, provides a profitable and flexible solution for the different requirements of emerging MVNOs. Detailed information about how YateUCN works in 2G and 4G networks is available here.