The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Network convergence paradigm will substantially increase the pervasive use of WiFi-enabled smart mobile devices. Although various on-demand streaming services are already available over mobile WiFi-enabled devices, it remains a challenging problem due to WiFi's limited communication range, mobility and user population density issues. In this paper, we enhance our previous work on MOVi (Mobile Opportunistic...
Transmission scheduling to improve the capacity in wireless mesh networks (WMNs) is challenging. One promising candidate solution is backpressure scheduling, which was shown to provide throughput optimality and queue stability. Several recent practical systems that implement approximations of backpressure scheduling show performance benefits in WMNs that are based on IEEE 802.11, which is the most...
Existing network operator-friendly P2P traffic control techniques like P4P argue that network operators can reduce inter-domain traffic while peer-to-peer (P2P) applications can improve their performance through the traffic localization. However, the existing work has not addressed how the traffic localization affects an intra-domain traffic control in detail. In fact, not considering the impact on...
Even though BitTorrent-like file sharing is successful for P2P (peer-to-peer) content-sharing over Internet, it suffers from the content unavailability problem when the contents are not popular (i.e., the absence of seed). This content unavailability can be mitigated by using multi-swarm cooperation and/or by bundling popular/unpopular contents. In this paper, by employing user-driven virtualized...
In spite of its success, BitTorrent is facing a content unavailability problem where peers can not finish their content download due to an absence of seeders. Although some approaches have been proposed to improve the content availability, the prior conditions such as a downloaded content and a set of related contents to be bundled limit their application scopes. Our main contribution is a multi-swarm...
Recently several P2P-based mobile media distribution systems including MOVi (Mobile Opportunistic Video on demand) are proposed as a complimentary solution for mobile VoD services. In this paper, we propose a three-step segment-based scheduling algorithm incorporating the notion of ORC (Opportunistic Regional Clusters) for mobile media distribution. By intelligently designing a centralized scheduling...
The volume of P2P application traffic has increased so much that network-operator-driven traffic control techniques such as P4P for localizing the P2P traffic are recently proposed. The gist of the existing approach is that the network operators provide traffic and topology information as a guidance to peers so that P2P traffic will flow as the network operators intend, thus, realizing unilateral...
For large-scale wireless sensor networks (WSNs), cluster-based architecture is desirable. Conventional short range sensor radio, however, is often inefficient for the inter-cluster communication due to the large distance between cluster heads. One solution is to use a longer range radio for inter-cluster head communication. In this paper, we consider a dual-radio cluster head with IEEE 802.15.4 and...
As an alternative solution to solve the tussles between the network operators and the peer-to-peer (P2P) applications, an informed peer selection (IPS) scheme like P4P is proposed. In IPS, each network operator installs a server that provides their network information to the peers as a guidance for peer selection and each peer chooses its communicating partner based on the guidance. Most existing...
In this paper, we will study an broadcast protocol based on prioritization for delay-tolerant networks (DTNs). Considering the feature of the DTNs where there may be rare stable links, we propose an application-oriented broadcast (AOB) protocol built atop "bundle layer" in DTNs, which adjusts the forwarding probability for different types of traffic categories. As a result, AOB can provide...
As the importance of service availability is increasing, we need to reflect the service availability when we build service overlay networks. With this requirement, we also have to achieve two goals for service providers and users: maximization of service provider's revenue and guarantee of service availability of user service requests. For this, in this paper, we propose B-Greedy (service availability-Bounded...
Chord is a scalable peer-to-peer (P2P) lookup protocol that solves the problem of efficiently locating nodes with designed data items. However, Chord is known to be limited in routing efficiency since all nodes are placed on the overlay without taking into account the underlying network topology. In this paper, we introduce AChord, a topology-aware version of Chord that utilizes anycast, along with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.