3-day instructor-led training with case studies, 0900-1700

• Develop an understanding of what GSM is, its overview and architecture
• Develop an appreciation of how GSM and related technologies can be used to deliver value to customers through proper indoor planning,
• Explore the linkages between technological capabilities of GSM and the antenna systems sued for the optimum performance for the same
• In building solutions
• In building design process including a case study and indoor planning process and procedures and the final report.

The goal of “Indoor Design and Planning for Mobile Networks” is to present details and up-to-date information on the GSM standard. The participants will learn about practical performance and deployment issues specific to the GSM and Indoor design standards. The processes, procedures and protocols followed in the indoor design process.

The participants will gain a detailed end-to-end knowledge of the GSM technology, its benefits and potential pitfalls. Furthermore, they will able to address real-world problems of the indoor design deployment.

A basic knowledge of wireless, IP and data communication technology will be required.

For engineers and managers responsible for the planning, design, and operation of GSM networks and indoor design services.

1. Overview
• Why Indoor Network?
• Coverage everywhere - good network reputation
• Too expensive to increase the indoor location probability from outdoor sites
• Increasing the in-building Quality
• Increasing Capacity => High Indoor Frequency Reuse


• Typical High Traffic Indoor Locations
• Office Buildings/Corporate Buildings
• Shopping Malls
• Hotels
• Airports
• Railway/Bus Stations
• Indoor Stadiums


2. RF Transmission Media
• Distributed Antenna System
• Choose antennas that match to the environment - i.e. hard to spot!
• Install high enough - prevent desensitization


• Leaky Cable
• Leaky cable is modified feeder cable which radiates the BTS signal into the
• Leaky cable creates cylindrical field around the cable
• Leaky cable provides uniform coverage
• Leaky cable is wideband
• Provides coverage also into location where the RF connection otherwise not possible
• Cable could be installed both horizontal/vertical
• Cable can be split as normal distribution lines
• Cable can be terminated with terminator or standard antenna


• Optical Fibre
• The total strand diameter for single mode fiber
• The ultra pure glass that forms the core transmission medium
• Low loss signal distribution within certain range
• Comparison between Different types
• Applications
• General Categorization


• Distributed Antenna System
• Shopping Malls, Airports, etc


• Leaky Cable
• Tunnels


• Optical Fibre
• To be used when the cable runs are too long for a distributed antenna system


3. Link Budget Sample Calculation


4. Integrated Radio System
• Introduction
• Integrated Radio System
• One common shared indoor system to accommodate Multi-Band Multi-Operator
• se equipment that cover all bands (800MHz, 900MHz, 1800MHz)


• Why?
• Too many antennas and cable inside the area
• Different operators have different equipment rooms, i.e. more space required
• Unfair environment to late comer


• System Diagram


• Point of Interconnect


• POI Criteria
• Insertion Loss
• How much signal is attenuated?
• Power Handling
• Total power allowed
• Return Loss
• Isolation between ports


• Inter-modulation


• A nonlinear device
• Non-linear characteristics
• Active
• Passive


• Inter-modulation Minimization
• Avoid active elements
• Isolation between Transmit and Receive antennas


• Use band pass filters
• Filter out the IM products


5. Amplifiers
• Gain and Output Power Rating Gain
• Difference in output signal to input signal
• Selection of Gain is relative easy (30dB, 50dB, 80dB…etc)


• Output Power
• The number of carriers to be amplified and output level


• Noise Figures
• Every Amplifier produces noise
• Amplifier amplifying both the Signal and Noise
• The carrier-to-noise ratio (C/N)


6. Repeaters
• Band Selective Repeater
• Two amplifiers, working in duplexed Operation
• It amplifies all signals within the selected frequency band


• Channel Selective Repeater
• Repeater Restrictions
• Repeaters must be used in cells with good donor cell coverage
• The repeater must transmit and receive all frequency channels of the donor base station
• Sufficient decoupling


• Repeater Applications


7. Indoor Mapping
• Indoor Positioning
• Walking path is a series of straight lines only
• All turns in walking paths must be planned and marked on floor plan
• Markers were placed in log file at the turning points
• Dummy co-ordinates created on the floor plan by using MapInfo
• Co-ordinates at turning points (markers) are measured off floor plan
• Co-ordinates inserted to log file utilizing time stamps and markers
• Signal Strength
• Timing Advance