Abstract
Integration of Mobile ad hoc network (MANET) with the fixed Internet has paid immense attention in the field of heterogeneous networks. Such integration has many advantages and offer many usage scenarios for both MANET and the Internet. The MANET routing protocol ad hoc on-demand distance vector and dynamic source routing provide communication within the MANET. However, MANET router which desires communication with the Internet require global connectivity. This paper presents a survey of most significant proposals for MANET-Internet connectivity by describing their characteristics, evaluation metrics, quality parameters and approaches referred. The study of various gateway discovery and gateway selection schemes have been presented based on routing metrics, load balancing, adaptive technique, fuzzy system, address configuration and ant colony optimization approaches. Summary of significant contributions of existing schemes and issues found in literature for MANET-Internet connectivity have been presented. The survey concludes with additional investigation for future research work.
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