Network Design and Dimensioning

Abstract

The system acquisition process for our system (that we have called WIS), or indeed any similar system is divided into four phases:

• i) Establishment of the concept: Taking into account requirements, analysis, assumptions, state of technology and standards, objectives, design rules leading to network characteristics.

• ii) Development of the architecture: Definition of the Performance requirements of the subsystems and their integration in a manner which satisfies the end to end performance required. This involves the study of each aspect of the concept in sufficient detail to produce costed proposals for budgetary cost estimates and to identify the major parameters and subsystem characteristics. This will then allow the project to pass into Phase iii), which will include preparation of detailed cost estimates, technical specifications and implementation planning

• iii) Development of System Engineering Plans and Preparation of Specifications and Implementation Plan: When approval is given from the Authority to the designer’s proposals and recommendations developed in phase ii above, it will be possible to enter phase iii) activities of specification writing and implementation planning (e.g. site surveys and plans). In this phase, the design authority will be required to produce a detailed cost estimate.

• iv) Procurement, Installation and Commissioning: The last phase of system acquisition when the equipment and services as specified in phase ii) will be procured and installed according to the time phased plan and consistent with the operational requirements and funding constraints.