• Sweetu Sureja
• Vrunda Joshi

The WSN is built of "nodes" – from a few to several hundreds or even thousands, where each node is connected to one (or sometimes several) sensors. Each such sensor network node has typically several parts: a radio transceiver with an internal antenna or connection to an external antenna, a microcontroller, an electronic circuit for interfacing with the sensors and an energy source, usually a battery or an embedded form of energy harvesting. MAC layer is concern with the sharing physical connection to the network among several computers. It is responsible for moving data packets to and from one Network Interface Card (NIC) to another across shared channel. The main purpose of MAC is to provide addressing, framing, and perhaps error detection for the type of the media that will be used. MAC protocols are used in MAC sub layer. There are two different types of MAC protocols: the fixed assignment channel access methods which assign nodes onto different time slots to avoid collision (TDMA), and the contention-based channel access methods in which nodes compete for the wireless communication channel, an example such as carrier sense multiple access (CSMA) but in MOD-MAC use energy parameters before sent data based on the energy value, data rate and location information each node participate in communication. MOD-MAC also check criticality of each mode- energy mode and critical mode base on energy threshold. Using this approach we can improve energy consumption, delay and throughput of network with NS2 tool.

Sensor Network, Data link layer, MAC, CSMA, TDMA, NIC

"An Enhance Approach of Modified MAC Using Energy & Latency Factor in Wireless Sensor Network", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 1, page no.c724-c729, January-2024, Available :http://www.jetir.org/papers/JETIR2401279.pdf

"An Enhance Approach of Modified MAC Using Energy & Latency Factor in Wireless Sensor Network", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 1, page no. ppc724-c729, January-2024, Available at : http://www.jetir.org/papers/JETIR2401279.pdf