Study and Investigation of Performance of Reactive and Proactive Protocols of MANET on the Basis of CBR and TCP Traffic Pattern

Mobile Ad-hoc Network is a collection of wireless mobile nodes dynamically forming a temporary network without the aid of any established infrastructure or centralized administration. The system may operate in isolation, or may have gateways to interface with a fixed network. Routing in MANET is intrinsically different from traditional routing found on infrastructure networks. The Internet Engineering Task Force (IETF) created a working group, Mobile Ad-hoc Networks (MANET), to standardize IP routing protocols in MANETs. The RFC (Request for Comments) - 2501 specifies the charter for the working group. The RFCs still has unanswered questions about the implementation or deployment of the protocols. Several studies and research have been done on the performance evaluation of some Reactive routing protocols based on CBR traffic pattern. Different methods and simulation environments give different results. It is observed that there is need to broaden the spectrum to account for different environmental and performance parameters.. It is observed that most of the research work is based on CBR traffic pattern, whereas most of the traffic approximately 95% on the Internet carries TCP. So, It is desirable to study and investigate the performance of different MANET routing protocols under both CBR and TCP traffic patterns. In this paper, we will evaluate the performance of Reactive and Proactive mobile ad-hoc network routing protocols for both CBR and TCP traffic patterns. We will also investigate the effect of environmental parameter i.e. change in speed on the performance of these protocols. The performance of these routing protocols is evaluated with respect to various parameters such as average end-to-end delay, packet delivery ratio, routing overhead, normalized routing load, throughput and jitter. We have performed extensive simulation by using NS-2 simulator.