Specifications

2-14 800 MHz System Planner R4-11-4G
SYSTEM DESIGN
Performance Requirements
The system engineer must identify and analyze the following architectural
requirements before proceeding to the system design phase:
• Computer site availability
• Base site availability
• Computer to base site communications links
• Radio channel availability
• Mobile computer geographic distribution
2.6.3 Performance Requirements
Performance requirements describe messaging capacity, response times, and
data radio coverage in objective terms of numbers and time.
The systems engineer must identify and analyze the following performance
requirements before proceeding to the system design phase:
• System capacity
• System response times
• Radio coverage area
• Availability
2.7 System Design
This system design section is the final phase leading to the equipment list,
proposal, and SOW.
After documenting the specific customer requirements, the systems engineer
decides which standard Private DataTAC network topology can meet the
customer’s system-level requirements. The systems engineer decides which
type of design fulfills the customer’s requirements.
2.7.1 Functional Design
The Private DataTAC network uses the transport layer of the data radio
communications interface for host and wireless computer applications. The
Private DataTAC Network Capabilities Specification document describes the
end-to-end functions of the Private DataTAC network.
The systems engineer must prepare a functional system design for a formal
technical review (FTR). It minimally includes the following items:
• high-level system functional capabilities description
• Host and terminal connectivity description
• Private DataTAC network services utilization description
• Private DataTAC network functional ATP