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The aviation community is currently working on the standardization of data communication systems for the future air traffic management. In this context, the ICAO and EUROCONTROL are working on the standardization of IP-based aeronautical telecommunications network and future radio access technologies, respectively. With this work, for the first time, we integrate L-DACS 1, which is one candidate for...
Recently, femtocells, which cover a cell area of several tens of meters, have been attracting considerable attention in the field of mobile data communications. In the standard method, when a femtocell for data communication is connected through a public network such as a broadband access network or the Internet, an IPSec tunnel is established between the femtocell and the security gateway located...
Pervasive information gathering has became more and more important in people's daily life during the last decade. However, in some critical network scenarios such as Delay-Tolerant Mobile Sensor Network (DT-MSN), due to the sparse connectivity, node mobility and limited buffer, the traditional approaches for collecting information application may not work effectively without a stable end-to-end path...
Due to the network topology of an ad hoc network changes frequently and unpredictable, the security of multicast routing becomes more challenging than the traditional networks. In this paper, we describes a dynamic multicast height balanced group key agreement that allows a user in a multicast group to dynamically compose the group key and securely deliver multicast data for a multicast source to...
In this article, we have discussed about routing methods in mobile intermittent networks. In conventional data networks, assumption of existence of a path between sender and receiver is an essential hypothesis. In other words, if there is no path between sender and receiver, the whole process of routing and therefore transmission fails. However, in practice, there exist various scenarios that owing...
Group mobility management in wireless sensor network (WSN) is of particular importance as it is can be found in many practical application scenarios. In this paper, a group mobility scenario in WSN is considered and the data collected by the sensor nodes in the group is assumed to transmit either inside the group or to the corresponding node (CN) through the IP-based backbone network. Traditional...
The mobile communication systems services are shifting from voice conversation to data transmission through the Internet. The information transferred over the Internet is becoming increasingly rich, there will be a demand of peak data transmission rates of around 100 Mbps-1Gbps even in mobile communications systems. However, as the data transmission rate becomes higher, the peak transmit power becomes...
In partially connected ad hoc networks (PCANETs), the whole structure is partitioned into several unconnected regions. To address the communication problem between these regions, an on-demand routing technology based on task-relay (OR-TR) is proposed. Single or multiple task-relay nodes are adopted to act as the special communication medium in PCANETs. Simulations have been conducted to study the...
Proxy Mobile IPv6 outperforms previous mobility protocols have been standardized by the Internet Engineering Task Force. However, Proxy Mobile IPv6 still involves the triangle routing problem in where data packets for the mobile node are delivered throughout inefficient routing paths. To address the triangle routing problem, two different Route Optimization schemes proposed that exclude the inefficient...
The monitoring system in coal mine has special requirements for data query. Analysis shows that routing in the system should have four features: data-centric routing, supporting query of geographic position, low delay and high reliability of data transmission, robustness of topology. A mobile agent based routing algorithm with mobile sink and a dynamical weight metric which is derived from its current...
In this paper, we analyze a new type of delay tolerant networks (DTN) where each node owns multiple dedicated messengers, called pigeons. The only form of inter- node communication is for a pigeon to periodically carry a batch of messages originated at the home node, deliver to the corresponding destination nodes and return home. We name this as homing-pigeon (HoP) based routing mechanism, which is...
A Sensor network is composed of sensor nodes and sink nodes. Since the sensor nodes have limited resources a routing method should be energy efficient. Also it is simple and applicable to many sensor nodes. A location-based routing protocol, where each sensor uses its location and that of neighbor nodes to transmit data to a destination, can support a variety of application services with its efficient...
This paper presents the design of a MESH network to provide services simultaneous of voice, video and data. The network architecture is constituted by two access points(APpsilas), two mobile wireless routers (WRpsilas), a mobile unit, a portable unit and a control center. The network was implemented at Instituto Politecnico Nacional (IPN), campus Zacatenco. We make different communications tests of...
The following topics are dealt with: service oriented architecture; MAC rate adaptation and TCP ;data mining; cellular and mobile communication; telecommunication network security; mesh networks; telecommunication network architecture; peer to peer computing; applications in computer and communications ; software and applications; data communications; network management; document retrieval; telecommunication...
Communication in delay tolerant networks can be facilitated by the use of dedicated mobile ldquoferriesrdquo which physically transport data packets between network nodes. The goal is for the ferry to autonomously find routes which minimize the average packet delay in the network. We prove that paths which visit all nodes in a round-trip fashion, i.e., solutions to the traveling salesman problem,...
In this paper the new algorithm to improve the performance of data delivery percentage over Bangkok Train System Network (BTSnet) is presented. BTSnet can be implemented in regular traffic patterns by the public transportation authority to improve the performance of mobile ad hoc networks (MANET) for inter-vehicular communication systems (IVCS) in Bangkok. Since ad hoc networks consist of mobile nodes...
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