Abstract
The characteristics of delay-tolerant and opportunistic communication require fundamentally different approaches at the network layer for routing and forwarding. Unpredictable or large latencies require task divisions according to traditional layering to be reconsidered: Larger messages take the place of series of individual packets exchanged within end-to-end transport connections as virtually instant feedback loops between endpoints disappear. This (forced) move to message-based communication brings along new opportunities for application protocol design; at the same time, the lack of instant feedback and of instant infrastructure access creates a new set of challenges. In this chapter we will explore these challanges and opportunities. Since application design and development is more about practice than theory, this chapter extensively uses examples from real DTN applications and experiments. In this chapter we will explore the challenges that face application designers working on DTNs. We will first introduce typical scenarios in Section 9.1, and we will then look at some of the typical challenges in Section 9.2.We then look in more depth at some of the critical issues including security, legacy system support, and user interfaces in Section 9.3. Section 9.4 presents four in-depth case studies that look at different aspects of DTN applications.
Original language | English |
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Title of host publication | Mobile Ad Hoc Networking |
Subtitle of host publication | Cutting Edge Directions: Second Edition |
Publisher | John Wiley and Sons |
Pages | 315-359 |
Number of pages | 45 |
ISBN (Print) | 9781118087282 |
DOIs | |
State | Published - 4 Mar 2013 |
Externally published | Yes |
Keywords
- DTN/opportunistic, applications
- Disruptions, and design
- Offload/connectivity in real-time
- Opportunistic networking
- Real DTN, predictability/control