Microwave Technology Options

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Microwave technology options are various and highly dependent on the specific application being deployed. However, by focusing on the three key factors of capacity, cost and reliability, a network operator can decide if all-indoor, split-mount or all-outdoor microwave radio is the best choice. These slides looks at these factors and microwave technology options.

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Microwave Technology Options

  1. 1. 1 GARY CROKE, CALLUM NOON | AVIAT NETWORKS AVIAT TECHNOLOGY SERIES MICROWAVE TECHNOLOGY OPTIONS
  2. 2. capacity cost hybrid or all-ip? licensed vs. unlicensed? security and reliability questions zero footprint mpls or carrier ethernet? all-indoor or split mount? protection options Microwave Choices are Easy… Right? confusing and complicated…. goal: SIMPLIFICATION not exactly spectrum availability
  3. 3. OK, LET’S TAKE A LOOK AT THE VARIOUS TYPES OF PRODUCTS (table display)
  4. 4. SO, CHOOSING THE BEST PRODUCT COMES DOWN TO THIS SIMPLE EQUATION: CAPACITYCAPACITY RELIABILITYRELIABILITY COSTCOST
  5. 5. EVERYONE KNOWS THAT IF YOU WANT A MISSION CRITICAL RADIO (BEST when reliability is #1 goal) ALL-INDOOR IS BEST
  6. 6. BECAUSE MTTR IS BETTER 0 1 2 3 4 5 6 7 8 9 10 Outdoor RF Indoor RF Mean TTR 0 5 10 15 20 25 30 35 40 Outdoor RF Indoor RF Worst Case TTRRepair Time Travel Time Spare Retrieval Average TRR 3.75 Hrs Better Worst Case TRR 11.75 Hrs Better
  7. 7. System Gain (dB) All-Indoor Split Mount Improvement with All-Indoor QPSK 120 115.75 4.25 16 QAM 113.75 109.5 4.25 64 QAM 105.75 101.5 4.25 256 QAM 98.25 94 4.25 6GHz, 30MHz channel AND SYSTEM GAIN IS HIGHER
  8. 8. HOWEVER, THERE ARE THREE COMMON CONCERNS ABOUT ALL-INDOOR #1. long waveguide (WG) runs reduce overall system gain
  9. 9. LET’S INVESTIGATE THAT … 0% 5% 10% 15% 20% 25% 30% 35% <50 50-100 100-150 150-200 200-250 250-300 300-350 >350 PercentageofTotalLinks WG Run Length (ft) WG Run Length vs Percentage of Links AVERAGE WAVEGUIDE RUN IS 177 FT
  10. 10. SO, ALL-INDOOR IS 1.5dB BETTER ON AVERAGE LINK 0% 5% 10% 15% 20% 25% <0 0-0.5 0.5-1.0 1.0-1.5 1.5-2.0 2.0-2.5 2.5-3.0 3.0-3.5 3.5-4.0 PercentageofLinks System Gain Improvement (dB) SG Improvement with All-Indoor (vs Split Mount) AND HAS HIGHER GAIN FOR - 90% OF ALL LINKS
  11. 11. ANOTHER CONCERN ABOUT ALL-INDOOR #2. it’s too expensive!!
  12. 12. $0 $10,000 $20,000 $30,000 $40,000 $50,000 $60,000 $70,000 All-Indoor Split Mount All-Outdoor INITIAL COST (INSTALLED) $12,900
  13. 13. 17% 0% 4% 4% 4% 6% 5% 5% 55% New Tower Build/Lease 38% 1% 9% 8% 8% 13% 12% 11% Existing Tower HOWEVER, IF WE LOOK AT TCO Initial CAPEX Ongoing CAPEX MW Equipment Price Spares Upgrades and expansion Initial OPEX Design Site development Installation and commissioning Yearly OPEX Field corrective maintenance Repair and return Tower lease 5 Year TCO
  14. 14. THUS HIGHER POWER RADIOS REDUCE COSTS 0 5,000 10,000 15,000 20,000 25,000 30,000 10 8 6 4 3 2.5 TCO Reduction AntennaDiameter(ft) Impact of Improved System Gain on TCO (5 yr) 3dB 4dB $12,900 WORTH PAYING MORE FOR HIGHER POWER
  15. 15. PLUS ALL-INDOOR IS CHEAPER TO UPGRADE… Let’s investigate that…
  16. 16. ALL-INDOOR WAVEGUIDE $$$$$$ $$$$ SPLIT-MOUNT $$$$ Coax 1+0 1+0
  17. 17. ALL-INDOOR WAVEGUIDE $$$$$$ $$$$ SPLIT-MOUNT $$$$$$ $$$$ Coax 2+0 1+0
  18. 18. ALL-INDOOR WAVEGUIDE $$$$$$ SPLIT-MOUNT $$$$$$ $$$$$$$$ $$$$ $$ $$$$ $$ 2+0 2+0
  19. 19. IMPACT OF CAPACITY GROWTH ON TCO $0 $20,000 $40,000 $60,000 $80,000 $100,000 $120,000 100Mbps 200Mbps 300Mbps 400Mbps 500Mbps 600Mbps All-Indoor Split Mount All-Outdoor
  20. 20. OH! AND ONE MORE CONCERN ABOUT ALL-INDOOR 3. it doesn’t work in higher bands (less capacity on short hops) - true… then you may want outdoor rf… - lets take a look at the options
  21. 21. ZERO FOOTPRINT RADIOS Make Sense When:  No “nodes” or rings (multiple ports required)  No XPIC  No protection  No TDM  No advanced QoS  No space for anything indoors Ethernet otherwise you need external switch… and then you have a…
  22. 22. SPLIT MOUNT RADIO… 2 OPTIONS: Coax EthernetPoE Injector (external) ROUTER CHOICE COMES DOWN TO POWER, NETWORK MANAGEMENT OPTIONS, AND NATIVE TDM SUPPORT almost always makes sense to use a split mount radio
  23. 23. EXAMPLE: RING SITE WITH 1 SPUR LINK SPLIT MOUNT: COAX Switch PoE Injector (external) PoE Injector (external) PoE Injector (external) Outdoor Radio (ODR) Outdoor Radio (ODR) Outdoor Radio (ODR) Outdoor Radio (ODU) Outdoor Radio (ODU) Outdoor Radio (ODR) SPLIT MOUNT: ETHERNET INU ROUTER
  24. 24. COST AND BOM TELL THE STORY SPLIT MOUNT COAX SPLIT MOUNT ETHERNET Quantity Quantity Total # of outdoor elements 3 3 Total # of indoor elements 1 4 Total # of cables 3 6 Total # of network management systems 1 2 optimized for lowest cost of ownership inefficient for microwave networking not optimized for lowest cost of ownership OPERATIONALLY COMPLEX NON INTEGRATED NODAL SOLUTION MORE POINTSS OF FAILURE SPLIT ELEMENT MANAGEMENT LOWER RF PERFORMANCE FULLY INTEGRATED NODAL SOLUTION OPERATIONALLY SIMPLE LESS POINTS OF FAILURE FULLY INTEGRATED MANAGEMENT HIGHER PERFORMANCE RF optimized for microwave networking 75% less 50% less 50% less
  25. 25. SPLIT MOUNT W/ ROUTER AS INDOOR UNIT EVOLUTION WILL HAPPEN… ONLY QUESTION IS WHEN… Ethernet PoE Injector (external) ROUTER Pros Cons Eliminate external router (lower cost) Native TDM transport not possible “MW aware” routing “MW aware” routing Highly nodal platforms possible (lower cost) Organizational boundaries / ownership (IT vs Transport) questions
  26. 26. mission critical applications (any distance) 6-11ghz high capacity 6-11ghz low capacity 18GHz+ with indoor space available indoor equipment not possible (small cells) ALL-INDOOR SPLIT-MOUNT ZERO FOOTPRINT
  27. 27. THANK YOU QUESTIONS?

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