Understanding Requirements Analysis

Definition of a requirement from the IEEE Standard Glossary of Software Engineering Terminology

  1. A condition or capability needed by a user to solve a problem or achieve an objective
  2. A condition or capability that must be met or possessed by a system or system component to satisfy a contract, standard, specification, or other formally imposed document
  3. A documented representation of a condition or capability as in number one or number two above

Business Requirements

Business objectives provide an explanation for the purpose to implement a WLAN.

User Requirements

User requirements include the goals or tasks that users must perform when using the WLAN.

Technical Requirements

Functional or technical requirements are capabilities that, when implemented, allow the WLAN to meet the business and users’ requirements.

Requirement Type Definition Example
User User goals or tasks that users must perform using the WLAN Walk around while maintaining connectivity to a web server
Business Business goals or objectives that must be met by the WLAN Compliance with corporate security policy
Functional The technical capabilities of the WLAN that allow for or support user and business requirements WLAN Fast Secure Roaming or IEEE 802.11i support

Regulatory Requirements

Also called regulatory constraints, imposed by regulations or parent companies.

Budgetary Procedures

BoM = Bill of Materials

The BoM will act as the materials budget and the manager can use this to perform complete budget management.

BCWP = Budgeted Cost of Work Performed

ACWP = Actual Cost of Work Performed

BCWS = Budgeted Cost of Work Scheduled

Business Justification

All organizations have the following objectives:

  • Quality Improvement
  • Efficiency Improvement
  • Cost Reduction
  • Increased Production
  • Organizational Continuity

Information Gathering

The WLAN designer must discover the needs of the organization.

Aruba Portfolio

AP Product Line

  • 100 Series: 802.11n / 2×2+3×3 streams
  • 200 Series: 802.11ac / CAP + IAP
  • 300 Series: 802.11ac Wave 2 / BLE
  • MSR Aps = Outdoor Mesh APs
  • xx4 = Indoor / xx5 = Outdoor (ex: 274 vs 275)

Aruba Controller Portfolio

  • Mobility Master (MM) Master Controller v8.x / VM + appliance
  • Virtual Mobility Controller (VMC) Virtual Controller / VM
  • 70xx Series Controller Cloud Services and Branch Offices (16 to 64 Aps)
  • 72xx Series Controller Campus and Large Networks (256 to 2048 Aps) 7205/7210/7220/7240

  • Airwave Management and Monitoring Platform
  • Clearpass Network Control, Access Security and Guest
  • Meridian Location Awareness