Futuristic Trends in Networks and Computing Technologies: Second International Conference, FTNCT 2019, Chandigarh, India, November 22–23, 2019, Revised Selected Papers

LEACH model was proposed 19 years back and research community from the field of WSN has been exploring LEACH variants. To discover unseen areas in the field of WSN it is a great idea to study approved variants of LEACH through the time. Present paper studies the popular and approved versions of LEACH. The study categorizes all the variants in single and multi-hop communication mode, depends upon packets transmitted from the CH and the BS. The paper makes a comparative analysis based on parameters like cluster formation, complexity, energy efficiency, overhead, and scalability. Advantages and disadvantages of all the variants are discussed. Finally, the paper suggests upcoming research in the field of WSN.