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UMTS Network Planning Basics!
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Transmission Planning


Most of the 3G network license holders have an existing 2G license and will face great transmission planning challenges when upgrading a network from 2G to 3G:

  • Massive capacity growth
  • Controlling of the expansion process
  • Limited microwave spectrum availability and related cost issues
  • Limited space for new equipment and EMR sources
  • Cost and budget constrains
  • Requirements of design scalability and flexibility
  • Implementation of new technologies
  • Increased complexity and multivendor environment
  • Time table, availablility of skilled manpower
  • Reliability requirements (climate, redundancy, etc)

    2G network transmission capacity planning depends on the amount of transceivers, but 3G transmission planning depends on the customer phone usage profiles and other carried traffic. Where 2G backbones are aggregated small pipes, 3G traffic will be in combined large pipes carrying mixed traffic. 3G project transmission planning include a lot of issues:

    9   Before the 3G Roll-out
  • Traffic type and amount estimation
  • Upgrade and future network layout plan (layers, topology, media)
  • Availability, Operation & Maintenance, spare unit plan
  • Fault, Configuration, Performance, Security management plans
  • Network synchronisation plan
  • QoS and system performance specification
  • Deploying flexible upgradeable equipments
  • Current network inventory, evaluation and status

    9   During the 3G Roll-out
  • Normal roll-out plans; manpower, logistics, HW, time table etc.
  • Deploying; ATM network, upgraded radios, nodes etc.
  • Links: 15GHz, 23GHz, 18GHz, 7GHz, 26GHz, 38GHz, 28GHz, 13GHz, 8GHz, 6GHz, 11GHz, 32GHz, 50+ GHz
  • Initial and continuous system testing
  • Continuous training of staff for equipment and technology
  • Redundancy (link, network, equipment) plan and testing
  • Traffic prioritising plan
  • Usage of other carriers capacity and reselling own capacity
  • Work what vendors call "future proofing"; you better ask them ;-)

    9   After the initial 3G Roll-out
  • Traffic analysis and management
  • Understanding the traffic
  • Equipment performance and suitability analysis
  • Upgrades and updates
  • Preparing for the next roll-out cycle, long term development plan
  • Comparing the transmission system to competition and other vendor solutions

    Future 3G transmission networks will be largely IP based systems. Topology of the network will be a mess mesh; hybrid of point-to-point, star and ring configurations. Transmission options are still microwave, optical fibre, leased line and even copper line. Addition to current high capacity PDH / SDH networks, higher capacity ATM networks will be implemented to carry the main load. Internet will be integrated to mobile network (or visa versa).


    _________________________________
    IP = Internet Protocol
    PDH = Plesiochronous Digital Hierarchy;  point-to-point, time division multiplexing, n * 2 Mbits/s (Europe)
    SDH = Synchronous Digital Hierarchy;  typically 2/34/140 Mbits/s, n * 155Mbits/s, SONET in the USA
    ATM = Asynchronous Transfer Mode; 155Mbits/s, 622.Mbits/s


    Next: The Summary.


    3G Network Planning Basics
         1. Planning  5. Radio Access Network Design
         2. Coverage Planning  6. Core Network Design
         3. Capacity Planning  7. Transmission Design
         4. General Guidelines  8. The Summary

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