Tr@Ins7 Heterogeneous Access   Daan Pareit
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Tr@Ins7 Heterogeneous Access Daan Pareit

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Tr@Ins7 Heterogeneous Access   Daan Pareit Tr@Ins7 Heterogeneous Access Daan Pareit Presentation Transcript

  • IBBT Tr@ins WP6: Interworking Daan Pareit IBBT – IBCN – Ghent University
  • Interworking 2
  • NOC Train management AAA NAT Internet Mobility DHCP Management Mobility Management Local content
  • NOC Train management AAA NAT Internet Mobility DHCP Management Mobility Management Local content
  • Mobility Management Central Mobility Management Train QoS management Data QoS- Aggregation Buffer Gateway analysis scheduler unit QoS management Aggregation QoS- Data Gateway Buffer unit scheduler analysis Tunnel management Tunnel management Handover protocol Handover protocol PDF Monitoring Monitoring
  • Handover protocol  Two alternatives  Mobile IP (MIP)  Mobile Multi-Path SCTP (MMP-SCTP)  Train = a mobile router Passengers = a mobile network  User devices don’t need to be MMP-SCTP or MIP-aware
  • Handover protocol  MMP-SCTP vs MIP  MMP-SCTP has multihoming  MMP-SCTP has built-in reliability  MMP-SCTP has a higher overhead than MIP, but a higher throughput in WLAN
  • Handover protocol IN Passenger Passenger … TCP/ TCP/ UDP UDP IP IP data data OUT Passenger Passenger … TCP/ TCP/ UDP UDP MIP IP IP IP IP data data MMP- … CHUNK Passenger CHUNK Passenger TCP/ TCP/ UDP UDP SCTP IP IP IP data data SCTP
  • Handover protocol L2 Throughput in a WLAN 40,0 35,0 30,0 25,0 Throughput 20,0 (Mbps) 15,0 10,0 5,0 mSCTP MIP 0,0 0 500 1000 1500 Passenger IP packet size (bytes)
  • Mobility Management Central Mobility Management Train QoS management Data QoS- Aggregation Buffer Gateway analysis scheduler unit QoS management Aggregation QoS- Data Gateway Buffer unit scheduler analysis Tunnel management Tunnel management Handover protocol Handover protocol PDF Monitoring Monitoring
  • Policy Decision Function  Decides on interfaces to be used  Decision based on:  SNR, packet loss, traffic measurements  GPS, speed & management info  IEEE 802.21 MIH events and triggers  Load balancing, cost
  • Mobility Management Central Mobility Management Train QoS management Data QoS- Aggregation Buffer Gateway analysis scheduler unit QoS management Aggregation QoS- Data Gateway Buffer unit scheduler analysis Tunnel management Tunnel management Handover protocol Handover protocol PDF Monitoring Monitoring
  • QoS classes are mapped QoS on outgoing links (Load balancing) buffer Mapping acceptors manager 5 QoS-classes: • Background: FTP • Best effort: Surfing, Email shaper • Streaming: Video stream shaper • Interactive: VoIP call schedulers • Priority: Crew Comm. Data analysis QoS-scheduler Buffer
  • Demo & questions 14