Having a good mobile network coverage within a building plays an important role in attracting and retaining mobile subscribers within the building/s. Especially in the workplace, Airports, Hotels, Convention centers, Hospitals, Banks etc. If the service provided is more stable, it tends to add more users to the mobile service providers.

To meet this ever-growing demand, building owners are finding it of paramount importance to deploy a strong in-building wireless solution. As a result, addressing the coverage, quality and capacity requirements of In-Building users is mandatory.

A building may not receive adequate mobile coverage from outdoor cell sites. This is because in most cases the signals present outside the building are unable to penetrate the building material, consequently resulting in poor coverage within the building. A typical problem in high rise buildings is the problem of interference, where at higher floors a full network presence is detected but a call cannot be made successfully due to interfering signals. In addition, crowded areas like Malls, Airports, large Commercial complexes need a dedicated system to handle the capacity requirements for the large   number of calls at such locations.

To answer the challenging responsibility, a well-planned in-building coverage system is required.  With 3G, it’s vital to keep control of interference levels, and buildings with walls, limiting the signal distribution, provide a natural barrier against interference. In-building solutions allow in moving the capacity inside the building without any trouble.

IBS Services

ATSL provides the following services

1. Site Survey
2. Design
3. Implementation
4. Commissioning
5. Testing

Site Survey

1. Preparation of site details after visiting to the site

>Including Site Location/Address/Drawings/Permission availability

2. Equipment Room

>Space requirement with multi band site equipments to be installed

3. MW Link Location

>Suitable position/s for fixing the Transmission Outdoor units

4. Main Power Supply

>Nature of availability (single phase/three phases) & Tapping Locations

5. Pre-Walk test

>Representing the current situation & dimensioning of signal strength & capacity

6. Deciding on Coverage & Antenna positioning

>Areas of the building to be covered with priority

7. Cable Routing

>Methods of Cable laying using Cable Risers/Ducts/Trucking/Ladders…

8. Site Photos

>Add effectinv support for Implementation/Maintenance/Modifications of DAS

Detail Design

The RF design shall be based on the site survey results and shall be followed with the main ideas of indoor solution in TSSR. This Covers;

• Coverage planning
• Capacity planning (cell planning)
• Link budget planning
• Antenna planning

The design Report shall include the following information,

1. Introduction
2. Design Summary
   • Number of Omni Antennas
   • Number of Panel Antennas
   • Number of Sectors
3.  Building Information
   • Building / block Description and Floor Usage
   • Proposed Equipment Locations with photos
   • Proposed Microwave pole locations with photos
   • Proposed power tapping locations with photos

Technical Design

• Sectorization Plan
• Plots of proposed antenna locations and cable routes
• Test transmitter results
• Coverage Prediction plots for each and every location
• Combining arrangement/s
• Trunking Diagram/s
• EIRP Table
• Material List

Implementation

• Installation of RF Feeders in accordance with the design
• Installation of PVC conduit/casing/flexible for the feeders
• Installation of GI conduit/GI Flexible/PVC coated GI flexible with mounting accessories
• Installation of Cable Trays
• Installation of Clamps for mounting accessories
• Installation of cable trunks
• Drilling – Core/Impact according to the condition
• Color Matching of PVC Casing/Conduit/flexible
• Installation of Jumpers (1m/2m/3m)
• Fixing of connectors
• Installation of DAS Passive components

Splitters/Couplers/Hybrid-Couplers/Combiners (Duplexer/Triplexers)/Dummy Loads

• Supply & Installation of Earthing of DAS Passive components at Equipment Room (Hybrid Couplers/Combiners)
• Installation of Antennas
• Labeling

Testing

• Checking installation of DAS with required finishing & Conditions
• Measure VSWR values for each sector
• Perform Optimization Walk test
• Prepare As-built drawings as per requirement
• Hand Over reports including implemented conditions