Indoor/In Building Coverage is Nothing but improving the GSM signals inside Buildings,undergroung tunnels etc. Signals can be improved using boosters,repeaters,Microcells or Leaky cables Typically,several,indoor ypically,several,indoor antennas or radiating coaxial coaxi al cable is used to cover Many floors,cabins,rooms,halls,basements. floors,cabins,rooms,halls,basements.
WHY THE NEED FOR THE IN BUILDING BUILDI NG SOLUTION? SOLUTION?
1.More Coverage 2.Capacity Utilization 3.No more drop calls 4.Improved quality of service 5.More Services 6.Future Technologies
IN-B IN-BUILD UILDING ING SOLUTIO SOLUTIONS NS - CO CONCEP NCEPTS TS 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 eventually meets either the return of the investmen investmentt 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 complement complemented ed by dedicated IBS. The implementation 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 PLACES WHERE IBS NEED
and bus/train stations Conference
and exhibition centers Hospitals Hotels Shopping malls
1.Pre survey 2.Survey +Measurement 3.System Diagram, Antenna location on the floor plan, system discription,power budget 4.Report,Materials list,& drawing 5.Completion of the proposal 6.After implementation report.
Operators Site Acquisition Team
Radio Network Planner (Documentation)
Process flow IBS survey survey & implemen implementa tation tion roll roll - out
Planning Component Specification RF Cables
900 MHZ (db/100 mtr
1800 MHZ (db/100 m tr
1800 MHZ(db/100 mtr) super flex
7 .1 3
3 .9 5
2 .8 7
2 .3 7
C om ponent
Thru port loss(db)
1 6 db coupler
2 8 db coupler
3 10 db coupler
4 13 db coupler
5 15 db coupler
Horizontal beam width Sl.no
V ertical beam width
1 Omni Antenna
2 Omni Antenna
3 Panel antenna
Jumper loss-0.5 Connector loss -0.25
Flat Omni Antennas
Point of Interface
T OOLS O OLS RE REQU QUIR IRED ED FO FOR R TH THE E IB IBS S IM IMPL PLEM EMEN ENT TATI TION ON
TOOL FOR WALK TEST
NETMONITOR OR NETMONIT TOOLS
SOF SOFTWARE TWARE FOR MOBILE
TYPE OF IBS IMPLEMENT I MPLEMENTA ATIONS
High±Rise High-rise Tunnels
Building with Multiple Blocks
Building with POI Solution
/ Metro Stations by using Repeaters
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. buildings. The radio remote units, RRUs, are connected to the main unit via optical fibers.
SHOPPING MALL OR HIGH-RISE BUI UILD LDIN ING G WI WITH TH 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 An example of a metro solution with radiating cables in the tunnels.
I n-building n-building
coverage using repeaters (with the donor antennas visible on top of each tunnel entrance).
IBS - INST INSTALLA ALLATION TION MA MATERIALS TERIALS