A Scheme of Multipath Gateway Discovery and Selection for MANET Using Multi-Metric

When the mobile ad hoc network (MANET) is connected to the Internet, it is important for the mobile nodes to detect available Internet gateway (IGW) providing access to the Internet. We propose a new approach of IGW discovery and selection for MANET to connect with Internet. In the scheme, the multi-path is used to find all paths to IGW by source node in MANET, and multi-metric is used to select the optimum path to IGW. The result of evaluation shows that performance of the new approach is better than others'.