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Delay tolerant networks (DTNs) are a special type of wireless mobile networks which may lack continuous network connectivity. Multicast is an important routing function that supports the distribution of data to a group of users, a service needed for many potential DTNs applications. While multicasting in the Internet and mobile ad hoc networks has been studied extensively, efficient multicasting in...
We propose a novel routing protocol, RMR, for wireless tactical, high-mobility military networks that finds reliable routes through difficult terrains with possibly compromised regions. RMR uses an end-to-end reliability measure that includes both end-to-end connectivity as well as trustworthiness, and reactively discovers routes over spatial cells whose local reliability is proactively maintained...
The analysis of temporal connectivity graphs associated to real mobility traces in structureless Delay Tolerant Networks (DTN) has revealed the existence of a portion of nodes, called hubs, appearing frequently in optimal paths connecting arbitrary node pairs. Based on these findings, hub-based routing has become one of the most promising strategies in order to successfully deliver messages in DTNs...
The autonomous nature of Mobile Ad hoc Networks (MANETs) makes them suitable for the support of extreme emergency rescuer IP communications for next generation networks. A major hurdle towards the deployment of emergency MANETs (eMANETs) is the design of a distributed routing protocol that can adapt to its highly dynamic topology where the number of nodes in the network frequently varies. This paper...
One of the notoriously difficult problems in vehicular ad-hoc networks (VANET) is to ensure that established routing paths do not break before the end of data transmission. This is a difficult problem because the network topology is constantly changing and the wireless communication links are inherently unstable, due to high node mobility. In this paper we classify existing VANET routing protocols...
Mapping and dynamic routing in a wireless network are essential and basic operations that are the prerequisites for all higher order interactions between nodes on that network. The Intent of network mapping by multi mobile software agents is to obtain the topology of network in a distributed manner. In this paper we examine how software agents can wander in an unknown Ad hoc network with cooperation...
The trend of adopting more and more wireless mobile computers and smartphones has changed our way of living. Those devices heavily rely on the underlying wireless network systems to provide adequate communication support. As streaming audio and video becomes norm, the requests for stringent maximum end-to-end latency and minimum bandwidth make the networking process more difficult. Quality of Service...
We study the application of multipath routing to enhance reliability of high quality video in 60 GHz radio indoor networks. We propose a cross-layer approach taking into account the possibility of layered-coding for video stream transportation and the characteristics of 60 GHz radio links based on our earlier studies on the stability of 60 GHz radio links. Further three traffic allocation schemes...
Routing in delay tolerant networks (DTNs) in which most of the nodes are mobile and intermittently connected is a challenging problem because of unpredictable node movements and lack of knowledge of future node connections. To ensure reliability against failures and increase the success rate of delivery, erasure coding technique is used to route messages in DTNs. In this paper, we study how the cost...
In disruption tolerant networks, aggressive packet forwarding scheme like flooding has a major drawback in terms of network congestion. In this paper, we proposed a new routing algorithm, called adaptive randomized epidemic routing (ARER). ARER dynamically adjusts the forwarding probability for each message according to a new metric, replications density. Meanwhile, ARER arranges the forwarding sequence...
With the growth of the Internet services, voice over IP (VoIP) has been playing a key role in cutting the costs of telephone calls. It can be seen that since the demand of VoIP over wireless network is growing, the use of VoIP over mobile ad-hoc network (MANET) is expected to grow as well. We have identified some of the challenging issues to ensure robust and secure voice communication over MANET...
We describe the key design concepts of domain area planning utility (DAPU) developed by the PILSNER program to perform high-speed automated planning of future battlefield networks (FBNs). DAPU processes multiple inputs from resource planning such as nodes and their trajectories, planned ground- and air-tier nets, unit task organization (UTO) relationships, and typical communication requirements. It...
Multipath routing which has great potential to improve network characteristics for mobile wireless networks is one of central problems nowadays. Since most of the proposed multipath algorithms are On-Demand based, they need extra feedback information that lead the delay to grow. In this paper, we propose a proactive Multipath Optimized Link State Routing Protocol (MOLSR) based on OLSR(Optimized Link...
Voice over IP (VoIP) over a wireless mesh network (WMN) is a killer application candidate of the next generation services over wireless and mobile network infrastructure. Yet, the routing and transport efficiencies in consideration of specific attributes of WMNs have been little emphasized. Distinctively from conventional networks, the major traffic pattern of WMNs is anycast (one-to-one-of-many)...
Mobile ad-hoc network (MANET) is an appealing technology that has attracted lots of research efforts. Due to frequent communication failures, multipath routing is preferred than single-path routing in many applications such as multimedia streaming over MANET as the former can provide robustness, load balancing and reduce end-to-end delay. However, a security remains important factor that hinders the...
Routing to mobile nodes in a wireless network is conventionally performed by associating a static IP address (or a geographic location) to each node, and routing to that address using routing tables at intermediate nodes that are updated periodically to reflect mobility-induced network topology changes. This mode of routing works when the mobiles' speeds as well as the number of mobiles are small...
A Mobile Ad Hoc Network (MANET) is a dynamic wireless network that can be formed without the need for any pre-existing infrastructure in which each node can act as a router. In MANET, the high mobility of mobile nodes is a major reason for link failures. In This paper we propose a novel weight-based approach for routing algorithm in mobile ad hoc networks, called weight-based AODV (WBAODV). The proposed...
Mobile Ad hoc Networks (MANETs) are self configuring and self healing networks that do not require any existing infrastructure. As the nodes constituting the network are mobile, the network topology can be very dynamic. Hence, special routing protocols are designed to cater to the dynamic nature of MANETs. Optimized Link State Routing (OLSR) is once such protocol that has proven to be a potent routing...
Vehicle-based networks need energy-efficient communication to extend the battery lifetime, which subsequently extends the mission time of the node. We observe that these kinds of networks operate under different assumptions than traditional static sensor networks. The main difference is that these are small-scale networks. This motivates the need for a protocol that is optimized for such scenarios...
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