Globase.KOM - A P2P Overlay for Fully Retrievable Location-based Search

Kova!cevi, Aleksandra; Liebau, Nicolas; Steinmetz, Ralf

doi:10.1109/p2p.2007.4343468

Cited by 17 publications

(29 citation statements)

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“…As an example, the Globase.KOM architecture proposed by Kovacevic et al [15] apparently needs more hops and shows higher delay than our approach. However, their simulated scenario is different (and impossible to be reproduced) with respect to ours and, therefore, the comparison may not be meaningful.…”

Section: Sn Disconnections Over the Second Half Of The Observed Periomentioning

confidence: 64%

Combining geo‐referencing and network coding for distributed large‐scale information management

Picone

Amoretti

Martalò

et al. 2014

Concurrency and Computation

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The widespread and ubiquitous availability of Internet access enables the collective sharing of huge amount of data generated by heterogeneous sources. For example, the information, which will be exchanged among entities (sensors, people, and services) of future smart cities to enhance the security and lifestyle of their citizens, poses the challenging question of how this information can be efficiently and effectively maintained across the city. In this article, we propose a decentralized approach, based on the distributed geographic table (DGT) overlay scheme, which exploits geo-referenced information about nodes to achieve efficient data management. After recalling DGT main concepts, we illustrate the possible node types and how information can be published and retrieved within the network. To cope with the unavoidable node failures and disconnections, our approach leverages upon randomized network coding to increase the robustness of publish/retrieval operations. Evaluation is carried out through an extensive simulation analysis for a realistic urban scenario using the metrics of efficiency in data publication/search, resource availability, and storage occupancy requirements. Results show the approach effectiveness for large-scale sharing of geo-referenced information and tradeoffs between redundancy overhead and resource availability. A few results obtained with a preliminary DGT implementation are also presented in the paper

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Section: Sn Disconnections Over the Second Half Of The Observed Periomentioning

confidence: 64%

Combining geo‐referencing and network coding for distributed large‐scale information management

Picone

Amoretti

Martalò

et al. 2014

Concurrency and Computation

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“…A mapping of each point in space to exactly one node is derived. Globase [4] implements a hierarchical partitioning of the geographic space into layers of non-overlapping rectangular zones managed by dedicated superpeers. As in other superpeer-based systems, the relocation or failure of a superpeer triggers complex operations that lead Locality-extended DHT -----+ Location-Based NodeIds + ---+ + GeoPeer + --+ + + Globase + --+ + -GeoKad + + --+ + Geodemlia + --+ + + to a high maintenance overhead.…”

Section: Related Workmentioning

confidence: 99%

Overdrive an overlay-based geocast service for smart traffic applications

Heep

Florian

Volz

et al. 2013

2013 10th Annual Conference on Wireless on-Demand Network Systems and Services (WONS)

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Abstract-For smart traffic scenarios, communication between traffic participants is of high importance. Classical approaches (e.g. for information about congestions) employ a server-based architecture, which raises scalability and privacy concerns. In this paper, we propose OverDrive, a decentralized overlay-based geocast service that is applicable in smart traffic scenarios and not prone to the shortcomings of centralized designs. Information requests for points in geographic space are routed directly via traffic participants until they reach a node in the proximity of that point. In contrast to other approaches, our overlay is specifically tailored towards supporting mobile nodes-vehicles connected via cellular networks-and leverages their speed and direction for optimizing peering decisions and minimizing maintenance overhead. Exhaustive simulations in complex smart traffic scenarios show that OverDrive achieves high delivery ratios even in high mobility environments. At the same time, communication overhead is kept low, making OverDrive suitable for the use with cellular networks.

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“…For example, on wireless local area networks techniques that would be appropriate to use include those presented by Chandra, et al [22], or Vasudevan, et al [23] for nodes to discover one-hop or multi-hop neighbors connected via ad hoc routing or connected to neighboring access points. On cellular networks, a TSN would leverage geographically-aware peer-to-peer overlays such as Globase.KOM [24] and GeoPeer [25] for maintaining content distribution between peer nodes. Messages transmitted by each node can then be bounded by limiting them to nodes within the participant's current geographical locality.…”

Section: A Assumptionsmentioning

confidence: 99%

Community Membership Management for Transient Social Networks

Yusuf

Ramachandran

2012

2012 21st International Conference on Computer Communications and Networks (ICCCN)

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Abstract-Confluence of technologies represented by geolocation, geo-sensing, context and activity recognition, and smart phones with rich sensors is opening up new avenues for media-rich social interactions for a spectrum of applications from entertainment, to commerce, to emergency response. This paper addresses the challenges in membership management of a transient social network (TSN), a community of users with mobile devices engaging in social activities of common interest within specific temporal and geographical locality (e.g., flea market, emergency response, local auctions, etc.). Creating and maintaining viable transient social communities requires solving a number of significant challenges including managing the dynamically created social graph, maintaining connectivity across heterogeneous nodes and interfaces and efficient message delivery among the nodes in a community.Micrograph is a middleware for managing community membership in TSNs. It helps nodes to discover and participate with other nodes based on device-level, or application-level attributes. It allows a node to simultaneously participate in multiple distinct social communities by overlaying multiple TSNs on top of the available nodes in the physical network. Micrograph gives complete isolation for the activities of a node in each of the TSNs that a node may be participating in simultaneously and it also gives complete transparency to a participant as to the membership of a TSN in which he/she is involved in. In this paper, we present the design and implementation of Micrograph, a proof-of-concept implementation of the middleware using Android platforms, four applications to show the feasibility of Micrograph, and simulation-based evaluation of the implemented prototype.

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Globase.KOM - A P2P Overlay for Fully Retrievable Location-based Search

Cited by 17 publications

References 0 publications

Combining geo‐referencing and network coding for distributed large‐scale information management

Combining geo‐referencing and network coding for distributed large‐scale information management

Overdrive an overlay-based geocast service for smart traffic applications

Community Membership Management for Transient Social Networks

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