Network Entry Phase Optimization for WiMAX Network.

Abstract:

In the last few years, there has been a large growth in wireless broadband communication including Worldwide Interoperability for Microwave Access (WiMAX) technologies. The network entry process in WiMAX is the first process for Subscriber Station (SS) to join the WiMAX network. It is refer to the early procedure performed by SS to register with Base Station (BS) that controls the WiMAX network. The problem of long channel scanning and collision in ranging process can lead to the delay to the access time for initialization and recovery of service between SS and BS connection. Most of the current approaches are focused on reducing the scanning time and optimizing the ranging process but nearly everyone has ignore the influence of system parameters setting. Through this research, a technique is proposed to be used for IEEE 802.16 WiMAX standard with consideration on WiMAX network entry system parameter settings. The simulation environment has been set up to test different configuration condition in WiMAX environment. The intention is to investigate and make recommendation for necessary configuration for IEEE 802.16 standard. Simulation are done using ns-3 simulator and the findings are presented. Simulation results indicate proposed optimum key parameter value with effect on QoS parameters that will allow the WiMAX network to operate in a higher level of performance and environments.

Connection ID

To support various multimedia applications, the IEEE 802.16 standard defines four specific types of service flows (UGS, rtPS, nrtPS, BE) that meet different user requirements.

Each connection between a subscriber or a mobile station (SS or MS) and a base station (BS) is identified as one service flow by the connection ID.

-J.-Y. Pan et. all

Microwave Network Transmission

What are we know about microwave transmission?

1. It is a technology of transmitting information or power.

2. It uses radio waves called microwaves.

3. It is widely used for point-to-point communication.

Redirect Output Information into a File

You can redirect output information into a file and open it with any editor with this command (example):

./waf --run scratch/myfirst > log.out 2>&1

The log data is one of the ways to harness data from ns-3 simulation and only provide least amount of information.

The other ways to harness data from ns-3 simulation is through trace file data and topology animation.

The topology animation will confirms the topology visually and all the data will be in trace file data.

Regression

When a feature stops functioning as intended after some kind of of change to the system is integrated, it is called regression. Originally the term regression referred to a change that caused a previously fixed bug to reappear, but the term has evolved to describe any kind of change that breaks existing functionality. There are many kinds of regression that may occur in practice.

-ns-3 testing documentation

Why use simulation?

The main reasons to use simulation are:

1. Diagnosing process issue

2. Test performance improvement idea

3. Evaluating decisions

4. Stress test a system

pygccxml on Ubuntu

The steps to install pygccxml on Ubuntu:

1. Download pygccxml 1.0.0

2. Move to download directory

3. Extract pygccxml zip file

4. Move to extracted pygccxml file

5. Use this command : sudo python setup.py install