Resumen
In recent years, the Mobile Ad Hoc Network (MANET) has a vital role in many fields such as healthcare, military, rescue and smart city. Because of its mobility and ad hoc, each mobile network node acts as a router with limited battery energy. The out of energy network node not only affects its own ability to receive/receive packets but also affects the overall performance of the entire network. Therefore, designing an energy-efficient routing protocol will help to optimize the efficiency of MANET. Many routing protocols have been proposing to solve this problem. In this paper, we conducted a survey of the proposed energy-saving routing protocols in the last decade for MANET. Based on the survey results, we propose open research directions. We hope that this work will make a strong motivation in the field of energy-efficient routing research for MANET. The survey results are also a vital basis to serve the in-depth researches in the routing field for MANET of our research team.