Goal
mHOP is a real-time experimental platform for the study of the connectivity and end-to-end performance of device- centric wireless networks, in particular Multi-hop Cellular Networks (MCN) using mobile relays and Device-to-Device (D2D) communications; D2D communications are based on the 802.11 standard. The platform operates using live cellular networks, and allows evaluating the performance benefits of MCN over traditional cellular systems, and the operating conditions under which such benefits can be obtained. The mHOP nodes include sniffer and GPS software tools to monitor and geo-reference all the performance measurements both at the cellular and D2D links. mHOP has been evolved to integrate opportunistic networking both at the D2D and cellular connections. The code for the link-aware opportunistic (multi-hop) D2D communications scheme is released open source to the community at www.uwicore.umh.es/opportunities/Opp-D2D.html