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Application of GIS in planning

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Title: Application of GIS in planning


1
Application of GIS in planning optimizing a
mobile radio network Nomaswazi Tinus, GIS
Analyst, MTN (SA)
2
GSM DEFINITIONS
  • GSM Global Systems for Mobile Communication
  • 1st generation network
  • Voice capability only
  • GPRS General Packet Radio Service
  • 2nd generation network
  • Enables data capability to GSM network
  • EDGE Enhanced Data Rates for GSM Evolution
  • 2.5 generation network
  • 3G 3rd Generation network
  • Even faster data speeds (up to 384kbps)
  • Improved efficiency of voice calls
  • Makes video calls possible
  • HSDPA High Speed Downlink Packet Access
  • Real broadband data experience
  • Fastest commercially available data service in SA

3
GSM EVOLUTION
4
CELL PLANNING
  • CELL
  • Defines area of radio coverage for single base
    station.
  • Each cell has unique ID on the network
  • Group of cells form hexagonal structure basis of
    network design
  • BSC (Base Station Controller)
  • Positioned to optimize transmission node costs
  • Supports a number of BTSs (Base Transceiver
    Station)
  • Performs handover functions

5
CELL PLANNING
  • OBJECTIVES
  • Differing requirements for mature network
  • as opposed to new network rollout
  • Provide optimal coverage for network expansion
  • Provide sufficient capacity to meet demand
    (traffic forecasts and also license obligation)
  • Provide adequate quality/grade of service (GoS)
    i.e. minimise drop call rate maximize call
    setup rate

6
SPATIAL DATA AVAILABILITY
  • Network planning process highly reliant on
    availability of accurate spatial data
  • Spatial data a pre-requisite for good network
    design
  • Most planning tools have integrated functionality
    to handle spatial data (Asset, Atoll, PlaNet)
  • Limited access to accurate data for Africa
    (situation is improving)
  • MTN International highly dependant on
    availability of global datasets such as GTOP030,
    SRTM, LANDSCAN
  • SDI (Spatial Data Infrastructure) initiative
    across Africa globally commendable

7
DATA REQUIREMENTS FOR NETWORK PLANNING
  • CLUTTER /LANDUSE
  • Data aggregated to class categories to represent
    physical and human environment
  • Various geographical landscapes/environments will
    affect radio signal propagation in different ways
  • Measured data (from drive-testing) used to
    predict relative signal level for each class
    category

8
DATA REQUIREMENTS FOR NETWORK PLANNING
  • DEM (DIGITAL ELEVATION MODEL)
  • Representation of physical landscapes as
    height/terrain
  • Together with clutter used as basis for
    prediction model for radio signal propagation
  • Model considers obstructions between transmitter
    and receiver

9
DATA REQUIREMENTS FOR NETWORK PLANNING
  • POPULATION
  • Basis of estimations for traffic growth
    capacity (equipment costs volumes)
  • Cell planning for urban (metro major metro) vs.
    rural areas
  • Used as a measure to monitor compliance with
    regulatory license conditions
  • INCOME STATISTICS
  • Marketing prioritization in service offerings
    i.e. 3G rollout
  • Targeting Profiling of customers/subscribers
    based on demographics
  • Used as measurement for Return on Investment

10
DATA REQUIREMENTS FOR NETWORK PLANNING
  • IMAGERY
  • Useful aid in visualisation (site pre-planning,
    positioning verification)
  • Available as scanned topographical maps, aerial
    imagery or site photographs (rooftop sites in
    metro areas)

11
SPATIAL DATA LIMITATIONS
  • Limitations in usage of spatial data
  • Accuracy (scale, positional, resolution,
    temporal)
  • Population income statistics outdated or
    unavailable at sufficient resolution
  • Availability in suitable format (restriction to
    deal only with certain vendors)

12
SITE SELECTION
  • CONSIDERATIONS
  • Access to power
  • Transmission links
  • Access roads
  • Site lease
  • Existing masts i.e. site sharing with other
    operator
  • URBAN
  • Focus on quality of coverage
  • Environmental issues
  • Impact on network
  • RURAL
  • Focus on providing wide area coverage
  • Extended range sites

13
SITE SELECTION
14
NETWORK MONITORING OPTIMISATION
  • Growth in network traffic necessitates
    optimization of network to cater for
  • Low dropped call rate
  • Adequate Grade of Service (GoS)
  • High call setup success rate
  • Network availability
  • Involves monitoring of network to have
    understanding of not only WHAT sites need
    upgrading (equipment/infrastructure), but WHEN to
    upgrade.

15
NETWORK MONITORING OPTIMISATION
  • Traffic analysis in terms of seasonal, week-ends,
    day-time special occasions
  • Visual monitoring to detect trends and patterns
    (graphs maps)
  • Presenting snapshots at different levels
    national, regional, cell and site specific views
  • Targeted presentation of statistics content for
    different end users departments

16
NETWORK MONITORING
Network counters for traffic
Network counters for congestion
Different network areas
17
NETWORK MONITORING
18
COVERAGE COMPLAINTS HELPDESK
  • External email coveragecomplaints_at_mtn.co.za
  • External Service Provider 0839001212 toll free
    from 083 no.s
  • Dealer Helpdesk or 011 301 2583 for faxed
    queries.

19
  • Thank You
  • Questions?
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