Evolved Packet Core (EPC) is part of the Evolved Packet System (EPS) that provides packet data services to mobile communication. This course describes the protocols and signaling in the EPC infrastructure. Traffic cases for the EPC describing the various scenarios such as Mobility, Session and Bearer management are explained. It covers the interfaces in the EPC and also interworking with 3GPP and non-3GPP architectures.
Actual signaling traces are used where possible to show the practical aspects of signaling in an EPC network.
On completion of this course the participants will be able to:
1 Describe the EPC nodes and Interfaces
• List and describe the function of the nodes in the EPC with reference to Ericsson EPC solutions.
• Describe the LTE Access Interfaces such as S1 and X2
• Describe the EPC Core Interfaces such as S10, S11, S6a, S5 and S8 interfaces
• Describe Interfaces to external networks such as SGs, Gx and SGi.
• List of interfaces to 2G/3G network and interworking interfaces to non-3GPP network.
2 Explain the Signaling and Protocols between the nodes
• List and explain some EPS Identifiers, e.g. Geographical Identifier TA, MME Pool Area, SGW Serving area. E-UTRAN identifiers, PLMN identifiers, UE temporary Identifiers.
• List and describe the protocols used in the EPC network, SCTP, Diameter, S1-AP, NAS, SGs-AP, GTP, RADIUS.
3 Understand, describe and explain how different traffic cases are handled by the EPC nodes
• List nodes involved in traffic cases
• Describe the Identity, Authentication and Location Management procedures
• Explain the traffic cases of EPS Session Management
• Describe selected traffic cases for Mobility and Handover procedures.
• Analyze detailed EPS signaling flows and Message content for EPS procedure, e.g.
• Attach, Detach, TAU etc from actual traces.
4 Explain the supporting services for EPC
• Describe signaling from the Home Subscriber Server (HSS) and AAA
• Describe the DNS procedures for EPC
• E2E Voice Signaling over LTE/EPC using IMS, CSFB, SRVCC.
The target audience for this course is:
System Engineers, Service Planning Engineers, Network Design Engineers, Network Deployment Engineers.
Successful completion of the following courses:
EPC System Survey
Duration and class size
The length of the course is 2 days and the maximum number of participants is 16.
This course is based on theoretical instructor-led lessons and theoretical exercises given in a classroom environment.
The time required always depends on the knowledge of the attending participants and the hours stated below can be used as estimate.
|Day||Topics in the course||Estimated Time (hours)|
|1||EPC Nodes and Interfaces||1 hour|
|EPC Signaling and Protocols||1 hour|
|Traffic Cases||4 hour|
|2||Traffic Cases (Cont.)||4 hour|
|Supporting Services||2 hour|