Advance Flexitp

Research Proposal

Sumitbhai Jansari jansas01@student.uwa.edu.au School of Computer Science and Software Engineering The University of Western Australia

Title: Revised FlexiTP for Wireless Sensor Network Supervisor: Professor Amitava Datta

Background

Wireless sensor network consists of many small, low-power and intelligent sensor nodes. These sensor nodes are placed in a physical area of interest for example natural ecosystems, battlefields and man-made environments to gather relative information. These nodes need MAC layer protocols to communicate with each other. There are several Mac Layer protocol has been implemented based on TDMA, or CSMA, or a hybrid concept of TDMA & CSMA. Such protocols (TRAMA, FLAMA, PMAC, ZMAC) can be adopted at the expense of high-energy consumption for sharing traffic information.[1] It also does idle listening. FlexiTP attempts to address these disadvantages.

Previous Work

FlexiTP, designed by Winnie Louis Lee under supervision of Prof Amitava Datta, is a TDMA based protocol with the loose slot structure. Nodes wake up at their scheduled slots, otherwise be in a power saver mode to reduce the idle listening. It is highly energy efficient. Even the designer of the protocol has conducted several testing and proved FlexiTP as a better protocol than the ZMAC protocol.[2]

1

Problem

FlexiTP requires the data gathering cycle to stabilize the network against the topology changes and network contention. This time synchronization scheme to stabilize the network depends on the length of the fault-tolerance slots.[3] Current FlexiTP protocol has fewer fault-tolerance slots. As we increase the size of fault tolerance slot, it makes the reduction in the length of the communication slots. This will result into high network contention due to less communication slots. So, we have to come with redesigned slot structure to overcome this problem without affecting the network communication channel.

Aim

The aim of this project is to make...