Abstract
Non PC devices and gadgets are increasing day by day, due to this increase and all the time connectivity of the devices to the Internet raised many challenges; such as memory shortage, IP configuration space, and energy consumption and security issues. Current infrastructure of internet of things (loT) is still not mature enough to handle all of these changes. Although, many attempts have been made to address these challenges in the context of loT, but the proposed solutions either address the specific issue or are very generalized. Thus there is a need to look at the proposed approaches and solutions from a holistic perspective to uncover future benefits and increase applicability and integration of the solutions proposed in literature for loT. Hence, in this paper and attempt have been made to gather and analyze all the existing and proposed solutions in the literature based on different parameters. Looking at the literature this survey helps in developing the understanding of the existing loT infrastructures and provide insights about future infrastructure for loT components and/or devices. The given future directions are based on the focused survey of many research papers.