Somayeh Rahmani - Department of Electronic, Computer and IT, Qazvin Branch, Islamic Azad University, Qazvin, Iran
Ahmad Khademzadeh - Head of Education & National Scientific and International Scientific Cooperation Department at CyberSpace Research Institute, Iran, Tehran
Amir Masoud Eftekhari Moghadam - Department of Electronic, Computer and IT, Qazvin Branch, Islamic Azad University, Qazvin, Iran

In recent years, many researchers have worked in the area of wireless sensornetworks that has led to the variety of algorithms and methods for the collection andtransmission of environment information; but still many challenges faced bywireless sensor networks using methodologies are applied in various fields. Such asMedia Access Control that due to the media being shared on these networks, there isa possibility of collision and data loss. Since the retransmission increases networklatency and consequently reduces network energy, therefore various solutions havebeen proposed for media access control that their main purpose is media accesscontrol and prevention of collisions. Hence media access control protocolsrequirement, more and more felt. In this study, a free collision algorithm with theacceptable ability to media access channel is presented in which we have tried toreduce the number of time slots and increase the network throughput as much aspossible.

Sensor Networks, throughput, time slots, Media Access Control, collision