• V Silpa
• C M Sri Priya

In sensor network, we focus on IEEE 802.15.4 WSNs and show that they provide a very low reliability in terms of packet delivery ratio when power management is enabled. We found that this behavior is caused by the 802.15.4 MAC protocol and therefore, throughout we will refer to it as the 802.15.4 MAC unreliability problem. Specifically, we found that this problem – which is originated by the CSMA/CA algorithm used for channel access – becomes critical when power management is enabled due to the default MAC parameters setting suggested by the standard. Indeed, the IEEE 802.16 standard allows some flexibility in choosing CSMA/CA parameters, as it defines a range of allowed values for each of them We focus on the average throughput and delay analysis. We carry out a transient analysis that is of particular interest when sensor networks are deployed to provide -coverage for real-time applications. We validate our analytical results against simulation results obtained through NS2.

IEEE 802.16 MAC; Single-hop; Multi-hop; WIMAX technology; Wireless sensor network

"IMPROVING THROUGHPUT AND DELAY PERFORMANCE IN SENSOR NETWORKS USING MAC PROTOCOL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.317-322, August-2018, Available :http://www.jetir.org/papers/JETIR1808944.pdf

"IMPROVING THROUGHPUT AND DELAY PERFORMANCE IN SENSOR NETWORKS USING MAC PROTOCOL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp317-322, August-2018, Available at : http://www.jetir.org/papers/JETIR1808944.pdf