IP Backhaul in Mobile Networks Duration: 3 days

IP Backhaul in Mobile Networks
CONTENT
Since the introduction of 3G data networking capabilities, mobile networks and mobile usage has undergone a tremendous change. Once voice was the dominating service at the mobile networks, but nowadays data traffic volume exceeds voice traffic everywhere, where the service is available. Unfortunately this comes with a need to change the mobile network backhaul solutions as well. Current E1/T1 connections are not enough to carry mobile data, which exceeds tens of megabits per second per cellular site at the moment and hundreds of megabits per seconds with new generations. This means that mobile operators need to rethink their network infrastructure as a whole.

Traditionally operators have built multiple networks for different purposes. The lowest layer has been the physical network including fiber, copper and radio connections. On top of those technologies like xWDM, SDH/Sonet, ATM, Frame Relay, IP, MPLS and Ethernet have been deployed. Since the fixed operator networks are running a combination of Ethernet and IP/MPLS at the moment, it is feasible to use the same networks for mobile backhaul purposes as well. This brings dramatic cost savings both on the OPEX and CAPEX side.

This course provides insight on the currently available technologies how to build a new generation IP mobile backhaul network. Since all the networks are not the same, both Ethernet and IP/MPLS worlds will be covered. In addition, the course goes through additional relevant features like timing synchronization possibilities, OAM features, QoS mechanisms and capacity planning.

TARGET AUDIENCE
•    Mobile network site solution design, implementation and operations personnel
•    Mobile network backhaul design, implementation and operations personnel
•    Fixed network personnel that have to support mobile backhaul connections.

NOTE: This course is not delivered with the FoldOut methodology.

Overview of mobile backhaul networking

  • From voice to data – what is changing?
  • From 2G via 3G to 4G – what can be offered?
  • Some trends and predictions on the data usage and its’ future
  • Site element connectivity requirements
  • Core network element connectivity requirements
  • Co-operation of data, voice and mobile networks

Traditional mobile backhaul solutions – short overview

  • Fixed PDH and SDH/Sonet connectivity to cell sites
  • Frame Relay and ATM connections for data usage
  • Microwave based connectivity to cell sites

New mobile backhaul with Ethernet technologies

  • Introducing Metro/Carrier Ethernet
  • ME/CE service models
    • E-Line
    • E-LAN
    • E-Tree
  • ME/CE UNI technologies (Type I and Type II)
  • ME/CE NNI technologies
  • Other relevant ME/CE technologies and parameters
  • Transporting Ethernet in Ethernet
    • 802.1ad Provider Bridges
    • 802.1ah Provider Backbone Bridges
  • 802.1aq Shortest Path Bridging

New Mobile backhaul with MPLS technologies

  • MPLS primer – terminology and forwarding model
  • MPLS service models
    • L2 P2P (PWE3)
    • L2 VPN (VPLS)
    • L3 VPN
  • MPLS Traffic Engineering and Fast Reroute
  • MPLS based L2 P2P connections
    • Overview of PWE3 technology
    • Ethernet based pseudowire
    • ATM and Frame Relay based pseudowire
    • Circuit Emulation pseudowires
    • Interworking with different pseudowire types
    • Backhaul solution with pseudowires (customer case)
  • MPLS based L2 MP2MP connections
    • Overview of VPLS technology
    • VPLS terminology
    • Discovery of VPLS sites
    • Signaling inside VPLS
    • Hierarchical VPLS (H-VPLS)
    • Inter-Chassis Communication Protocol for redundancy (ICCP)
    • Other VPLS mechanisms
  • MPLS based L3 VPN connections
    • Overview of L3 VPN technology
    • L3 VPN terminology
    • Using different topologies with Route Target attribute
    • Purpose of Route Distinguisher attribute
    • Routing for L3 VPNs inside provider cloud
    • Routing for PE-CPE connection
    • L3 VPN extensions; router redundancy and others
  • MPLS Transport Profile (MPLS-TP)
    • Overview of MPLS-TP
    • Differences between legacy MPLS and MPLS-TP
  • Case example of using MPLS for mobile backhaul

OAM for Mobile Backhaul with new transport solutions

  • Overview of the available OAM mechanisms
  • MPLS OAM
  • Ethernet OAM
    • 802.1ag Connectivity Fault Management
    • 802.3ah Ethernet Link OAM
    • Y.1731 generic OAM
  • OAM interworking
  • Performance monitoring

Timing synchronization with new transport solutions

  • Overview of the timing/synchronization problem with mobile backhaul
  • Generic timing/synchronization related mechanisms
  • Timing/synchronization with traditional backhaul solutions
  • Generic timing/synchronization mechanisms for new backhaul solutions
  • Synchronous Ethernet
  • IEEE1588v2 Precision Time Protocol
  • IEEE802.1AS Timing and Synchronization

Security in new mobile backhaul solutions

  • Overview of the need of security
  • L2 level security – 802.1AE Link Layer Encryption
  • L2 level security – other relevant mechanisms
  • L3 level security – IPSec
  • L3 level security – other relevant mechanisms

Capacity planning and Quality of Service (QoS) in new mobile backhaul solutions

  • The need for QoS
  • Generic QoS models in fixed operator networks
  • QoS requirements for 3G/4G networks
  • Implementing QoS with Ethernet backhaul solution
  • Implementing QoS with MPLS backhaul solution
  • Cell site traffic estimations
  • Reflection of the traffic amounts to backhaul connections
  • Technologies for capacity monitoring

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