UMTS - Core Network Protocols and Procedures
- Duration: 3 days or 18 hours
- Level: Level 4
UMTS - Core Network Protocols and Procedures
Course Outline
Divided into14 sections, the topics covered will include:
Section 1: Carrier Grade IP (1.5 hours)
- Migration to a Packet Switched Transport Network - ARPU, OPEX, CAPEX.
- Motivation for the IP Soft Switch.
- Soft Switch Advantages and Disadvantages.
- NGN Protocol Placement - BICC, Sigtran, SIP, H.248, MGCP, RTP/RTCP etc.
- Overall Operation - High Level Call Flow.
Section 2: IP Transmission and Switching (1.5 hours)
- IP / MPLS Transport Network Basics.
- MPLS Traffic Engineering.
- Resiliency and Redundancy - MPLS FRR.
- Traffic Separation - MPLS VPNs.
- Carrier Ethernet.
Section 3: MPLS TE and Other Services (1 hour)
- What is Traffic Engineering? - MPLS as a suitable protocol for supporting TE.
- Where to Use MPLS TE - Explicit Routing, Network Utilization, Priority and Preemption.
- Circuit Emulation over MPLS, Pseudowire End to End Emulation, channel bonding.
- Ethernet - VLANs, QoS, PBB-TE.
Section 4: IP Signalling Aspects (1.5 hours)
- Sigtran Components - SGW, STP, SCTP, User Adaptation.
- SCTP Architecture - Associations, Endpoints, Streams, Chunks.
- SCTP Association Establishment - INIT, INIT-ACK, COOKIE-ECHO, COOKIE-ACK.
- SCTP Data Transmission and Acknowledgement - TSN, SSN, SID, SACK.
- User Adaptation Layers - SUA, IUA, M3UA, M2UA, M2PA.
- Analysis of real network traces.
Section 5: Media Description (1 hour)
- SDP Composition - Session and Media Level.
- SDP Transport Options - SIP, H.248, BICC etc.
- Session Level Parameters.
- Media Level Parameters.
Section 6: IP Traffic Aspects (1.5 hours)
- RTP and RTCP Overview.
- RTP Key Functionality - RTP Header Fields.
- RTP and Voice Codecs.
- Compression.
- RTCP Reports and their Key Components - Sender, Receiver, SDES, Bye, App.
- Analysis of real network traces.
Section 7: Quality of Service Issues (1 hour)
- Problems in IP Networks for QoS - jitter, dropped packets, delay, mis-sequencing etc.
- QoS Mechanisms for IP - IntServ and RSVP.
- QoS Mechanisms for IP - DiffServ.
- Additional QoS Mechanisms for Packet Networks - 802.1p, MPLS-TE, BFD, SBCs etc.
Section 8: Media Gateway Control Protocols (1 hour)
- H.248 Protocol Architecture - Capabilities and Features.
- H.248 Transactions - Contexts, Terminations, Commands, Descriptors.
- H.248 Packages - Specific packages employed in the 3GPP Release 5 architecture.
- Message Flow for Call Establishment and Termination.
- MGCP Architecture - Differences between H.248 and MGCP.
- Analysis of real network traces.
Section 9: Bearer Independent Call Control (1 hour)
- BICC CS1 and CS2.
- BICC CS2 Key Functions - CSF, BCF, MCF etc.
- ISUP Message Format.
- IPBCP.
- BICC Call Establishment.
- Analysis of real network traces.
Section 10: Session Initiation Protocol (1.5 hours)
- SIP Capabilities.
- SIP Identities and Functional Elements - AoR, Proxy, Registrar, Redirect.
- Methods - Register, Invite, Ack, Cancel, Bye, Options.
- SIP Registration and Registration Security.
- SIP Session Establishment.
- Defining the Media Stream with SDP (Session Description Protocol).
- Analysis of real network traces.
Section 11: SIP Enhancements (1 hour)
- Development of SIP - SIP Working Groups, SIMPLE, SIPPING.
- Areas of Development - Header Fields, Methods, Warning Codes, Security Mechanisms.
- Additional Methods - Publish, Subscribe, Notify, Prack, Info, Update, Message, Refer.
- Problems associated with Firewalls and NAT.
- NAT Traversal Techniques - UPnP, ICE, SBC.
- Analysis of real network traces.
Section 12: End to End Call Procedures (1.5 hours)
- Protocol Interoperation during Call Establishment.
- Interaction with the UTRAN - Key RANAP messages.
- Mobility Database Interrogation - Key MAP messages.
- Mobility and the Core Network.
Section 13: Network Modelling Techniques (2 hours)
- Traffic Profiles from Real Networks, Golden Cells and the impact of Congestion on the Service Provider’s Business Plan.
- Network Cost Models for Cell Sites, Backhaul, Core and IP Interconnect.
- Modelling of IP networks using Excel.
- Planning Exercise - Translating Traffic and Subscriber Forecasts into Network CAPEX and OPEX.
Section 14: Future Core Networks (1 hour)
- Requirements and Market Drivers for the EPC / SAE.
- Positioning of the EPC / SAE within the overall LTE architecture.
- 3GPP Standards Process.
- SAE Principles of Operation.
Who Should Attend
Circuit Switched Network Engineers involved in the continued deployment and operation of a Release 4 networks. Operations and Support staff requiring a comprehensive guide to the composition and functionality of a next generation mobile network.
Pre-learning
Pre-learning is provided to prime those attending the instructor led phase. Each lesson is based on an interactive online format and should take about 30 minutes to complete. The pre-learning lessons are:
- Test of Understanding - Try the online check to see how much you know.
- Packet Switching.
- Protocol Stacks and IP.
- IP Addressing.
- IP Soft Switching.