Performance Evaluation and Analysis of MAC Protocol in Mobile Ad Hoc Wireless Network using NS-2
Keywords:
AWN , QOS , MAC , MACA , CSMA, DSR , Throughput , packet delivery ratio , Average jitter , Routing overhead wireless network.Abstract
A Mobile Ad Hoc Network (MANETs) is a collection of wireless hosts that can be rapidly deployed as a multi hop packet radio network without the aid of any established infrastructure or centralized administration [1]. medium Access Control (MAC) protocols are responsible for coordinating the access from active nodes. Carrier Sense Multiple Access (CSMA) refers to a family of protocols used by stations contending for access to a shared medium like an Ethernet cable or a radio channel. MACA (Multiple Accesses with Collision Avoidance) Protocol is a Contention based Sender initiated Protocol which uses Three-way handshaking means that Request to send packet, clear to send packet, Data packet exchange. by the help of binary exponential back off Algorithm avoid congestion problem and this algorithm help to determine correct sending rate. in which if any packet transmitted by a node is drop, the node uses the back-off (BEB) algorithm to random amount of time . A comparative study was done on Ns-2 2.35 Version simulator over CSMA & MACA . DSR routing protocol will use to evaluate the CSMA& MACA performance.
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