Preventing goodput collapse for multi-hop routing in IEEE 802.11 based ad-hoc networks by adjusting residual hop count

With the vision of the internet of things (IoT), it is expected that wireless networks will grow, concentrate and traffic carried will increase in the future. In wireless networks, multi-hop communication can be used instead of single-hop communication that we are accustomed today. Multi-hop communication is known to provide enhanced goodput performance for large and dense wireless networks under moderate traffic load. Nevertheless, the major problem is the goodput collapse experienced under high traffic load due to packet losses. One of the reasons of this problem in multi-hop communication is the emergence of a hidden terminal problem that we are not encountering in single-hop communication. In this study, two methods, prioritizing frames and varying contention window size according to the Residual Hop Count (RHC), are proposed and goodput performance is investigated through simulations. As a result of the studies, the goodput performance has been increased significantly under high traffic load.