International Journal of
Information and Education Technology

Abstract

Wireless ad hoc networks of mobile devices enables users to communicate with each other in an infrastrucre-less environment. This paper presents the design and implementation a middleware on mobile Android devices for managing wireless multi-hop ad hoc networks. The middleware is implemented in the user space over Android OS and requires no kernel modification. It uses the Ad hoc On-demand Distance Vector (AODV) protocol for application layer routing and the Reliable User Datagram Protocol (RUDP) for reliable data delivery. It is implemented in two ways, one using traditional layered networking structure and the other based on software-defined networking principles. The implementations are portable across different versions of Android and provide easy-to-use interfaces for Android applications. To evaluate our middleware implementations, a text chat and a file sharing application were implemented based on the middleware and experimental results show good performance, up to 5Mb/s and 4Mb/s throughput in single-hop and two-hop communications, respectively.