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Connecting in the Wireless Connecting in the Wireless NetworksNetworks
ACE-RUS School & SymposiumACE-RUS School & SymposiumMay 7, 2012May 7, 2012
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Data-Centric ServicesData-Centric Services
Network Data Service Offerings
Backhaul Network Requirements
1G Analog 56K bps
2G Voice & SMS 3 Mbps
3G HSPA 2 - 16 Mbps 8 – 30 Mbps
4G (LTE & LTE Advanced) 100 – 1000 Mbps 50+ Mbps
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Network Architecture EvolutionNetwork Architecture Evolution
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Providing Wireless Backhaul Providing Wireless Backhaul Bandwidths Bandwidths
CopperCopper
• • DSLDSL
FiberFiber
• • FTTX FTTX
• • Direct FiberDirect Fiber
WirelessWireless
• • MicrowaveMicrowave
• • Millimeter-WaveMillimeter-Wave
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Service Level AgreementsService Level Agreements
End-to-End Turn up testing and ongoing performance monitoring End-to-End Turn up testing and ongoing performance monitoring and reporting:and reporting:
• • SLASLA
• • RFC 2544 / ITU-T Y.156samRFC 2544 / ITU-T Y.156sam
• • EquipmentEquipment
• • DUT / SUT / NUTDUT / SUT / NUT
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SLA Testing SystemSLA Testing System
Drawing courtesy of DragonWave Fusion A20
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Applicable CodesApplicable Codes
RFC 2544RFC 2544
• • ThroughputThroughput
• • Back-to-Back or BurstabilityBack-to-Back or Burstability
• • Frame LossFrame Loss
• • LatencyLatency
• • System ResetSystem Reset
• • System RecoverySystem Recovery
Y.156samY.156sam
• • Multi-Service Testing (Load Box)Multi-Service Testing (Load Box)
• • Packet Delay Variation (Jitter)Packet Delay Variation (Jitter)
• • CIR – EIR – Overshoot RateCIR – EIR – Overshoot Rate
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A funny thing happened on the A funny thing happened on the way to the Cell Towerway to the Cell Tower
Verizon Wireless Performance MatrixVerizon Wireless Performance Matrix
• • 4G Deployments will normally be 50 or 100 Mbps.4G Deployments will normally be 50 or 100 Mbps.
• • able to scale up to the full capacity of the GigE. able to scale up to the full capacity of the GigE.
• • Committed bandwidth (non-overbooked) transport.Committed bandwidth (non-overbooked) transport.
• • MTU size = 2008 bytes (802.3as) – (future 9000).MTU size = 2008 bytes (802.3as) – (future 9000).
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MTU of Common Media:MTU of Common Media:Media Maximum Transmission Unit
(bytes)Internet IPv4 At least 68
Internet IPv6 At least 1280
Ethernet v2 1500 (Current ONT Limitation)
Ethernet Jumbo Frames
2000 – 9000 (For correct interoperation, the whole Ethernet network must have the same MTU.)
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TimingTiming
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Providing TimingProviding Timing
SyncE / IEEE-1588SyncE / IEEE-1588
• • Ethernet Synchronization Messaging Channel (ESMC)Ethernet Synchronization Messaging Channel (ESMC)
• • physical layer, hop by hop, similar to TDM physical layer, hop by hop, similar to TDM networks. networks.
• • Precision Timing Protocol (PTP)Precision Timing Protocol (PTP)
• • Clock values passed inside the payloads.Clock values passed inside the payloads.
• • Includes time-of-day synchronization.Includes time-of-day synchronization.
• • IEEE-1588v2IEEE-1588v2
• • Establishes Master-Slave arrangements.Establishes Master-Slave arrangements.
• • mitigates the effects of forwarding delays.mitigates the effects of forwarding delays.
YourCommunication
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NECA Tariff F.C.C. No. 5NECA Tariff F.C.C. No. 5
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NECA Tariff F.C.C. No. 5NECA Tariff F.C.C. No. 5
Public Packet Data NetworkPublic Packet Data Network
• • Section 16.3 Ethernet Transport ServiceSection 16.3 Ethernet Transport Service
- ETS Channel Termination (300 foot delimiter)- ETS Channel Termination (300 foot delimiter)
- ETS Port (Basic & Interconnection – 50 mile delimiter)- ETS Port (Basic & Interconnection – 50 mile delimiter)
- ETS Ethernet Virtual Connections / Extended / Interconnected- ETS Ethernet Virtual Connections / Extended / Interconnected
- DSL Access Service Connection- DSL Access Service Connection
• • Section 17.4 Section 17.4
- Rate Bands - Service Levels - Monthly & Nonrecurring Charges- Rate Bands - Service Levels - Monthly & Nonrecurring Charges
