Design and Evaluation of Wi-Fi Offloading Mechanism in Heterogeneous Networks

2. Related Work

The study of analyzing Wi-Fi offloading and mobile data transfer results show that 55% of battery power saved due to offloading the mobile data and 65% throughput improved in terms of data rate (Lee et al., 2012). To improve the performance of remotely connected networks with different infrastructure. They designed framework for calculating data delivery in terms of time and data size. The proposed algorithm solves the N-P hard problem in network and improved efficiency (Kouser et al., 2018). The proposed offloading scheme in Mobile networks to improve energy and network capacity. They developed offloading algorithm using dynamic programming and it is proved by N-P complete problem. The results solved computational problems and obtain better network performance (Lu et al., 2016). The SDN based framework to offload mobile network to heterogeneous networks. He proposed partial algorithm for Wi-Fi offloading with the parameters of threshold probability and offloading data (Cao et al., 2016). After the simulation result the proposed method achieves 20%-40% improvement compared to without offloading scheme (Duan et al., 2014). The collaborative method of Wi-Fi offloading scheme in MADNet for enhancing energy efficiency in smart phones and achieves 80% energy consumption. It can tolerate minor prediction in mobility, localization and offloading (Ding et al., 2013). In Ad hoc Network, Ad hoc On-Demand Distance Vector (AODV) protocol category of re-active routing protocoland it gives better performance through the on-demand connection establishment. The improvement of this type of routing protocol is that it maintains routing information and updates every route establishment. It provides more flexibility on network deployment and supports both unicast and multicast routing. Security in MANET is a more important need and many researches are going on to solve the attacks and provide trust. Generally, the Public key cryptography and private key cryptography methods are using to provide the security and avoid the vulnerabilities (Shalini et al., 2018). These two crypto system approaches use different algorithms and protocols to enhance security. For internet based applications the security aspects implemented by the way of layered mechanism like Transport Layer Security (TLS), PGP, and GPG (Kumar et al., 2019).