Nex-G Innovations

Indoor wireless System Overview

• What and Why?
• Types of Indoor wireless systems
• DAS (Distributed Antenna Systems)
• Pico and Micro-cells
• Small Cells
• WiFi hotspots
• Indoor wireless technology overview
• Coverage requirements
• Indoor wireless capacity planning
• Indoor wireless system architecture
• Active and passive solutions
• Planning considerations
• Indoor wireless system design considerations
• Site surveys
• Pico and macro cell site considerations
• Mobile networks considerations
• LTE small cell considerations
• Installation considerations
• optimization considerations

Indoor wireless System Planning and Design

• Project deployment process
• Project management and system requirements baselines
• Scope of Work (SoW) for an In Building Wireless System
• Analysis of services
• Business and budgetary objectives
• Facility and document the as-built configuration
• RF environment in the design frequency
• Building drawings
• Design challenges
• Network architecture and topology
• RF planning and design
• Principles of sire survey
• Radio waves and propagation
• RF and optical Link Budget calculations
• Materials and RF propagation
• Refraction, Reflection, Diffraction and scattering
• Noise and Noise Figure
• Intermodulation and BER
• In-Building components
• Backhaul connection to the network
• Distributed Antenna Systems (DAS)
• Network management and operations
• in-Building Wireless System Architecture
• Passive DAS
• Active DAS
• Hybrid DAS
• Repeaters vs. base station solutions
• Technical considerations for various technologies
• GSM, CDMA/CDMA2000, UMTS, HSPA/HSPA+, LTE and LTE-Advanced
• OFDM/OFDMA/SC-FDMA and MIMO
• 802.11a/b/g/n/ac/ad

Case Study-1: Designing an indoor wireless project

• System design and development
• wireless voice/data needs
• Software analysis to specify optimum placement of access points and cells
• Large network “holes”
• Radio resources for outside mobile users
• Macrocell
• Capacity requirements and security measures
• Design to architectural and operational constraints
• System procurement management
• Equipment specifications
• Performance guarantees
• Construction requirements
• Site-walks and pre-bid

Indoor wireless Site Survey

VoltDB Clusters & Availability

• Environment, layout and network requirements
• Antennas
• RF propagation
• RF measurements
• Equipment location
• Cable routing
• Performance evaluation
• Optimization

DAS and Small Cell Technology

• What is DAS?
• What is a small cell?
• Types of DAS and small cells
• Indoor vs. outdoor
• Co-existence with macro-network
• Coverage considerations
• Capacity considerations
• Small cell Connectivity
• Small cell architectures
• Power consideration

Testing, optimization, and final acceptance

• Installation and integration management
• Project management of installation and testing with all systems
• Integration with other systems and trades
• Verify proper interconnect
• Configuration of access points
• Tests of system performance
• System security demonstration
• Operational verification tests through facility with client staff
• As-built and test documentation for completeness

Case Study 2: Designing an Indoor Wireless System with PCS/Cellular/LTE and Public Safety Coverage Extension

• Dedicated radio resources
• General Technical Features
• Frequency range 100 MHz to 100 GHz
• Accurate propagation predictions
• Propagation models
• Conductivity, permittivity and transmission loss
• Time dispersion/multipath (RMS delay spread) studies
• Angle of arrival calculations
• 2D and 3D ray-tracing models for outdoor microcell
• Indoor wireless LAN/PBX/cell-extender studies.
• Line-of-sight (LOS) and NLOS rays
• Wall transmission
• Corner diffraction
• Attenuation due to partial Fresnel zone obstruction.
• Hata propagation model
• COST-231 propagation model
• Walfisch-Ikegami propagation model
• Simplified outdoor microcell studies
• Multi-story indoor studies
• Calculate attenuation between floors
• Plot results in a 3D, multi-story projection.
• Free-space propagation
• Reflection
• Diffraction
• Diffuse wall scattering
• Pico and microcells
• High and low powered passive repeaters
• Passive coax-based transport
• Low and high powered active distributed antenna systems
• Radio over Fiber (RoF)
• Cable-distributed vs. Fiber-distributed

Case Study 3: In-Building Wireless, DAS and Small Cell System Design Case

• Application and Design Principles
• Using BDA devices and systems
• Repeaters, Boosters, Cell Enhancers
• HVAC ducting “waveguide” distributed
• Over-the-air donors
• Microcell and on-Site donors
• Community and Multi-Operator
• Public Cellular and PCS
• Law Enforcement, Public Safety
• 150, 450, 800-900 trunked
• SCADA telemetry: 150, 450, 900 MHz
• Public Unlicensed Mobile
• Basic Modulation Types
• Law Enforcement, Public Safety: FM, QPSK
• SCADA telemetry : FM, QPSK, others
• Public Unlicensed Mobile
• Signal Quality Criteria
• C/I, Linearity, Dynamic Range
• Headroom and Noise Performance
• Interference – External sources
• Internal sources generated
• Reflection-mode in cluttered environment
• Obstructions and Diffraction
• In-Building Propagation
• Free-space in rooms, hallways
• Attenuation through walls, floors, ceilings, doors, windows
• Frequency variability (“tilt”) of losses
• Loss, Tilt, and coupling in the use of HVAC ducts as waveguide
• Gains and Losses of system components
• Basic Design, Operational, and Troubleshooting discussions

Discussions and Solution Case Studies to focus on:

• Challenges in designing and executing in-building wireless projects
• Factors affect ROI and ongoing costs
• Gain a holistic approach to RF planning and solution integration
• Auditing In-building Wireless Deployment
• Active Distributed Antenna System (DAS)
• Passive DAS
• Repeater
• Pico or microcell
• Facility and Installation Considerations
• What is the type of facility?
• Open/warehouse
• Industrial/Manufacturing
• Cubed office
• Drywall office
• Hi-rise building
• Government building
• Hospital building
• Mall
• Airport
• Convention center
• Stadium/Arena
• Calculating number of subscribers within the venue
• Single-mode fiber vs. multi-mode fiber
• CAT3/5 cable
• CATV
• Coax
• Installation of conduit/innerduct required
• Plenum-rated cables
• Leaky Coax
• RF carriers per band