Case Study Info

Wi-Fi System Design

.pdfWi-Fi system design.pdf

Challenge

The customer contacted Softage and five other companies in three different countries to provide a competitive cooperation proposal for R&D and software development services. Softage won this bid for the project because of its expertise, experience, value proposition, and quick response.

Our customer is a prominent wireless systems integrator, specializing in point-to-point and point to multipoint wireless system solutions.Our customer needs to develop a next generation software and hardware product, a point-to-multipoint fixed broadband wireless local loop platform.

Solution Overview

The system designed by our team is a complete software solution satisfying customer’s requirements. The system consists of three basic building blocks:

  • Access Point (AP) units
  • Customer Premises Equipment (CPE) units
  • Network Management Software (NMS)

AP units are installed in a central location and provide coverage for an area planned by the local operator and as permitted by sector antennas. CPE units are installed at the end-user location within coverage of a particular AP and provide the end user connection to the network. NMS software is adapted to the new software and hardware product.

The main specific requirement of this project is implementation of Medium Access Control layer scheduling and management techniques. The MAC layer is being managed by user-defined Quality of Service values. This allows solving the hidden node problem, resulting in increased efficiency of long range and quality of bandwidth-critical communication.

  • The MAC layer supports up to 512 remote CPE units active simultaneously.
  • The MAC layer gives a mechanism to provide configurable, independent uplink and downlink bandwidth restrictions per CPE unit with a granularity of 32 kilobits per second in real time.
  • The system provides dynamic scheduling of MAC according to CPE priorities.

Network management package tools provide utilities for remote and local AP and CPE configuration.

Tools

C/C++, Wi-Fi

Operating systems

Linux, FreeBSD, OpenBSD, NetBSD