Enhancing Opportunistic Networks with Legacy Nodes

Nagy, Marcin; Kärkkäinen, Teemu; Ott, Jörg

doi:10.1145/2721896.2721899

Cited by 3 publications

(3 citation statements)

References 31 publications

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“…Ref. [38] follows the "gateway-based" structure to make the contents inside DTN accessible to users who are not DTN-aware by leveraging shared access points as gateway nodes. Taken together, in this work, we adopt the "gateway-based" approach, for reasons that, firstly, from the perspective of implementation the least effort is required for modification on existing functionalities of clients and servers; secondly, little knowledge about DTN is requisite for users; thirdly, the isolation of DTN makes the system more general-purpose, extensible, and flexible.…”

Section: Bridging Dtn With Http-based Servicesmentioning

confidence: 99%

“…Taken together, in this work, we adopt the "gateway-based" approach, for reasons that, firstly, from the perspective of implementation the least effort is required for modification on existing functionalities of clients and servers; secondly, little knowledge about DTN is requisite for users; thirdly, the isolation of DTN makes the system more general-purpose, extensible, and flexible. Although the basic idea of our work bears some resemblance to [38], in our design, the gateway nodes are not specialized APs, but ordinary human-carried or vehicle-mounted devices instead. Apart from the three typical models, aiming at rendering support for a wider range of applications with a unified bottom layer, Ref.…”

Section: Bridging Dtn With Http-based Servicesmentioning

confidence: 99%

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Geo-DMP: A DTN-Based Mobile Prototype for Geospatial Data Retrieval

Xiang

et al. 2019

IJGI

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Geospatial information is gaining immense interest and importance as we enter the era of highly developed transportation and communication. Despite the proliferation of cellular network and WiFi, on some occasions, users still face barriers to accessing geospatial data. In this paper, we design and implement a distributed prototype system with a delay/disruption tolerant network (DTN), named Geo-DMP, for cooperatively and opportunistically sharing and exchanging named geospatial contents in a device-to-device fashion. First of all, we construct a lightweight “content agent” module to bridge the gap between the application layer and the underlying DTN protocol stack. Afterwards, to profile the mobility history of users in practical geospatial environments, we present a map segmentation scheme based on road network and administrative subdivision information. Subsequently, we associate the regional movement history information with the content retrieval process to devise a hierarchical and region-oriented DTN routing scheme for both requests and responses. Finally, we conduct extensive experiments with real-world trajectories and complete implementations on the emulation platform composed of virtual machines. The experiments corroborate that Geo-DMP has the capability of successfully retrieving geospatial contents for users for most of the time under mobile circumstances with episodic connectivity. Moreover, en-route caches can be efficiently exploited to provision contents from multiple sources with less network resource consumption and shorter user-perceived latencies.

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Section: Bridging Dtn With Http-based Servicesmentioning

confidence: 99%

Section: Bridging Dtn With Http-based Servicesmentioning

confidence: 99%

Geo-DMP: A DTN-Based Mobile Prototype for Geospatial Data Retrieval

Xiang

et al. 2019

IJGI

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“…A related question is if web users moving between access points would also contribute to the connectivity of a disconnected ICN. We have shown that they can make a difference if the Liberouter nodes instrument the web storage of mobile browsers for relaying messages [35].…”

Section: Validationmentioning

confidence: 99%

Bringing Modern Web Applications to Disconnected Networks

Nagy,

Kärkkäinen,

Kurnikov

et al. 2015

Preprint

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Disconnected networks arise in environments where stable, wellconnected infrastructure connectivity is not ubiquitous. In practice, these arise particularly in mobile systems, where the connectivity can be achieved through short-range, pair-wise contacts between mobile nodes. Information-centric Networking provides a highlevel framework through which many different systems for disconnected networking can be understood. In this paper, we present a system built on top of the ICN abstraction that allows interactive web applications to be developed and deployed in disconnected networks. We describe our system and protocol design, validate its operation using simulations, and report on our implementation including adaptations of six existing apps into web applications capable of being deployed in disconnected networks.

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