1 research outputs found
Opportunistic Routing Metrics: A Timely One-Stop Tutorial Survey
High-speed, low latency, and heterogeneity features of 5G, as the common
denominator of many emerging and classic wireless applications, have put
wireless technology back in the spotlight. Continuous connectivity requirement
in low-power and wide-reach networks underlines the need for more efficient
routing over scarce wireless resources, in multi-hp scenarios. In this regard,
Opportunistic Routing (OR), which utilizes the broadcast nature of wireless
media to provide transmission cooperation amongst a selected number of
overhearing nodes, has become more promising than ever. Crucial to the overall
network performance, which nodes to participate and where they stand on the
transmission-priority hierarchy, are decided by user-defined OR metrics
embedded in OR protocols. Therefore, the task of choosing or designing an
appropriate OR metric is a critical one. The numerousness, proprietary
notations, and the objective variousness of OR metrics can cause the interested
researcher to lose insight and become overwhelmed, making the metric selection
or design effort-intensive. While there are not any comprehensive OR metrics
surveys in the literature, those who partially address the subject are
non-exhaustive and lacking in detail. Furthermore, they offer limited insight
regarding related taxonomy and future research recommendations. In this paper,
starting with a custom tutorial with a new look to OR and OR metrics, we devise
a new framework for OR metric design. Introducing a new taxonomy enables us to
take a structured, investigative, and comparative approach to OR metrics,
supported by extensive simulations. Exhaustive coverage of OR metrics,
formulated in a unified notation, is presented with sufficient details.
Self-explanatory, easy-to-grasp, and visual-friendly quick references are
provided, which can be used independently from the rest of the paper.Comment: 41 Pages, 28 figure