ibs - microqual ppt gireesh
TRANSCRIPT
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What is Indoor Coverage
Indoor/In Building Coverage is Nothing but improving the GSM signals insideBuildings,undergroung tunnels etc.
Signals can be improved using boosters,repeaters,Microcells or Leaky cables
Typically,several,indoor antennas or radiating coaxial cable is used to cover Many floors,cabins,rooms,halls,basements.
WHY THE NEED FOR THE IN BUILDING SOLUTION?
1.More Coverage2.Capacity Utilization3.No more drop calls4.Improved quality of service5.More Services6.Future Technologies
IN-BUILDING SOLUTIONS - CONCEPTS
•An in-building solution may be offered in many different ways.
•There is always a trade-off between quality and cost.
•Further more there are as many tentative solutions as there are designers.
•One has to consider as many aspects as possible but still ensure that the In-Building Solutions, eventually meets either the return of the investment or meet the customer specific requirements or both.
•In most cases the payback time for a standard solution is less than two years. Ordinarily coverage from the macro network via outdoor antennas penetrates into the buildings but needs for many buildings be complemented by dedicated IBS.
•The implementation of dedicated in-building coverage enables new traffic for the mobile operators in areas that previously were “black holes” and offloads the macro system in areas with over lapping in-building and macro network coverage, thereby increasing overall system coverage and capacity
PLACES WHERE IBS NEED
Offices/industries
Airports and bus/train stations
Conference and exhibition centers
Hospitals
Hotels
Shopping malls
Planning
1.Pre survey2.Survey +Measurement3.System Diagram, Antenna location on the floor plan, system discription,power budget4.Report,Materials list,& drawing5.Completion of the proposal6.After implementation report.
In-Building Solution Resources
Operators
Radio Network
Planner
RF Survey
Engineer
Operators
Site Acquisition
Team
Radio Network
Planner
(Documentation)
Installation
Team
Installation
Planner
Installation
Supervisor
Process flow IBS survey & implementation roll - out
Planning
Component Specification
RF Cables
Cable
900 MHZ(db/100 mtr 1800 MHZ(db/100 mtr 1800 MHZ(db/100 mtr) super flex
1/2" 7.13 10.56 15.59
7/8" 3.95 5.9 7.29
1 1/4" 2.87 4.36
1 5/8" 2.37 3.65
SPLITTER
sl.no Component loss(db)
1 2-way splitter 3.5
2 3-way splitter 4.7
3 4-way splitter 6.5
Coupler
Sl.no Component Coupling loss(db) Thru port loss(db)
16 db coupler 6.5(100w) 1.5
28 db coupler 8.5(100w) 1
310 db coupler 10.5(100w) 0.75
413 db coupler 13.5(100w) 0.5
515 db coupler 15.5(100w) 0.4
Antenna
Sl.no Antenna Type Gain (dbi)
Horizontal beam width Vertical beam width
1Omni Antenna 2.1 360 90
2Omni Antenna 4 360 90
3Panel antenna 8 90 65
Jumper loss-0.5
Connector loss -0.25
SYSTEM DIAGRAM
Service Providers
Point of Interface
Combiners/Splitters
Flat Omni Antennas
TOOLS REQUIRED FOR THE IBS IMPLEMENTATION
•VSWR METER
•NEMO TOOL FOR WALK TEST
•NETMONITOR SOFTWARE FOR MOBILE
•TOOLS SET
TYPE OF IBS IMPLEMENTATIONS
•High-rise building
•High–Rise Building with Multiple Blocks
•High-rise Building with POI Solution
•Tunnels / Metro Stations by using Repeaters
HIGH-RISE BUILDING
An in-building solution with a macro RBS connected to a passive coaxial distributed antenna system covering a large-size building
HIGH-RISE BUILDING WITH MULTIPLE BLOCKS
An in-building solution with one main-remote RBS covering two different buildings. The radio remote units, RRUs, are connected to the main unit via optical fibers.
SHOPPING MALL OR HIGH-RISE BUILDING WITH POI SOLUTION
An example of a multi-operator coaxial cable solution with dedicated indoor RBSs that are connected to a common distributed antenna system, DAS.
TUNNELS / METRO STATIONS BY USING REPEATERS
In-building coverage using repeaters (with the donor antennas visible on top of each tunnel entrance).
An example of a metro solution with radiating cables in the tunnels.
IBS - INSTALLATION MATERIALS
IMPLEMENTATION
