Paper—A Review on Parameters of Internet Gateway Discovery in MANETS A Review on Parameters of Internet Gateway Discovery in MANETS https://doi.org/10.3991/ijoe.v17i08.24597 Husna Osman () , Mufind Mukaz Ebedon, Amna Saad Universiti Kuala Lumpur, Kuala Lumpur, Malaysia husna@unikl.edu.my Abstract—Mobile ad hoc Networks researchers need to apply specific pa- rameters in the simulation tools chosen to analyze and discuss their results. The challenge faced by multiple authors is on how to decide on the choice of partic- ular parameters. A wrong choice could lead to a no credible result and a doubtful result by other researchers. A best practice is to follow what other authors are using as input parameters in their paper. This review analyses 72 proceeding pa- pers and articles in different digital libraries: google scholar, IEEE Xplore, Else- vier, Springer, and snowball from 2010-2020. We present the result of our survey in this paper. We recommend the input parameters research should use base on the high utilization. Our review will also help the community in MANET and Internet gateway to improve the credibility of the input parameters. Keywords—MANET, routing protocols, mobility model, metric, simulation tool, performance 1 Introduction Mobile ad hoc networks (MANET) is a self-construction network that depends only on the node to form a network on the go. The MANET node has a double function; they can be routers and sender at the same time. MANET communication has many chal- lenges based on the network’s formation, which involves a rapid change of the topology, battery drainage, and link breakdown. Base on all the challenges mentioned above, scholars have created different protocols to improve communication in MANE. They developed proactive protocol [1], reactive protocol [2], and hybrid protocol [3]. The mobile ad hoc network cannot only rely on internal communication within the MANET. Sometimes node needs to communicate with other nodes outside the MANET, which is on the Internet (infrastructure network), to extend the communica- tion. A mobile node in MANET needs to discover and communicate with the Internet gateway (IGW), which acts as hybrid equipment that understands both Infrastructure network and no infrastructure network (MANET). The node in IGW used three ap- proaches to discover the IGW and communicate with it. The first one is the proactive approach [4], where the IGW broadcasts a packet periodically to announce its presence to the node within a transmission range based on time to live (TTL). The node outside the transmission range used a reactive approach [5]. The reactive approach node that 38 http://www.i-joe.org