DakNet: rethinking connectivity in developing nations

Pentland, Alex; Fletcher, Ross A.; Hasson, Amir Alexander

doi:10.1109/mc.2004.1260729

Cited by 634 publications

(355 citation statements)

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“…Due to this, different operators are leaning towards low cost solutions. Compared to the cost for wired networks, wireless technologies are more cost-efficient, and several approaches have already been proposed [26][27][28]. So far none of these initial proposals has produced feasible solutions to offering services in these areas considering the low demand and high cost.…”

Section: The Cognitive Radio (Cr) Networkmentioning

confidence: 99%

A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces

Maloku

Fazliu

Ibrani

2018

Wireless Communications and Mobile Computing

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With the advent of analog to digital transition in TV broadcasting, a substantial amount of spectrum has become available in TV bands. To take advantage of this, the idea for cognitive radios was introduced for two major reasons: better utilization of spectrum in urban areas and facilitation of wireless connectivity in rural areas. To achieve these two goals, however, many challenges have to be addressed first. Considering that these frequencies are commonly licensed, besides primary user detection, a serious challenge remains the detection and identification of other secondary devices and networks. The problems arising from this issue concern the coexistence problems happening from having several primary and secondary networks of different technologies cohabiting the same licensed spectrum simultaneously and from many secondary systems/users coexisting at the same place while using identical or different technologies. In this survey we provide a review of existing works and outline new challenges regarding coexistence and self-coexistence in heterogeneous wireless networks in TV White Spaces including a comparative analysis between selected coexistence mechanisms.

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Section: The Cognitive Radio (Cr) Networkmentioning

confidence: 99%

A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces

Maloku

Fazliu

Ibrani

2018

Wireless Communications and Mobile Computing

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“…Along with the requirement of the communication under various extreme network conditions, such as, deep-space communication [1][2][3], maritime communication [4,5], underwater communication [6,7], and communication in remote areas [8][9][10], DTN [11] gradually get more and more focus as a new network model with intermittent connectivity.…”

Section: Introductionmentioning

confidence: 99%

NC-ODTN:Ocean DTN Network Coding Protocol

Zhang¹,

Li²

2016

Proceedings of the 2016 International Conference on Computer Science and Electronic Technology

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“…Such mobile ad-hoc networks, which deliver messages by taking advantage of any transmission opportunities that arise, have been called opportunistic networks [1]. These networks have received significant attention from researchers in recent times as they can be deployed in a number of practical scenarios, such as non-intrusive wildlife tracking (e.g., ZebraNet [2] and SWIM [3]), providing data communication to remote and rural areas (e.g., DakNet [4]) and offloading mobile data traffic [5].…”

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confidence: 99%

Routing in Opportunistic Networks

Woungang¹,

Dhurandher²,

Anpalagan³

et al. 2013

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Opportunistic networking is employed in scenarios where end-to-end communication paths between nodes cannot be assumed due to continuously changing network topology. In these networks, data is routed in a "store-carry-forward" fashion by exploiting the transient communication opportunities that arise when mobile nodes equipped with short-range wireless interfaces come within each other's transmission range. Designing efficient routing schemes for opportunistic networks is challenging as they face a trade-off between delivery performance and resource consumption. In this thesis, we propose a novel opportunistic routing algorithm that addresses this trade-off by incorporating information about the node contact pattern in the network. Aggregating contact events into a weighted graph enables us to detect communities and learn about the neighbourhoods of nodes. This information is utilized by our algorithm to assess the usefulness of every forwarding opportunity that arises. Performance evaluation of the proposed algorithm shows that it is capable of achieving good delivery performance while consuming significantly fewer resources in comparison to the existing opportunistic routing algorithms.ii Sommaire Le réseautage opportuniste est utilisé dans les scénarios où l'existence de routes de communication entre agents ne peut pasêtre présumé dûà l'altération constante de la topologie du réseau. Dans ces réseaux, l'information est acheminée grâceà une procédure de "sauvegarde-report" qui exploite les opportunités de communication transitoires qui ont lieu lorsque des agentséquippés d'interface sans-filà petite portée entrent dans leurs périmètres de portée respectifs.Établir des plans de communication efficaces dans le contexte de réseaux opportunistes est un défi puisque ceux-ci font faceà un compromis entre performance de livraison et consommation de ressources. Dans cette thèse, nous proposons un algorithme de routage opportuniste original qui addresse ce compromis en incorporant l'information liée aux contacts entre noeuds du réseau. Assembler lesévènements de contacts dans un graphe pondéré nous permet de détecter les communautés et d'apprendre le voisinage de chaque noeud. Cette information est utilisée par notre algorithme afin d'évaluer l'utilité de chaque opportunité de communication qui se présente. Une analyse de la performance de l'algorithme proposé montre qu'il est capable d'atteindre une bonne performance de livraison tout en consommant significativement moins de ressources lorsque comparé aux algorithmes de routage opportuniste actuels.iii

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DakNet: rethinking connectivity in developing nations

Cited by 634 publications

References 1 publication

A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces

A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces

NC-ODTN:Ocean DTN Network Coding Protocol

Routing in Opportunistic Networks

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