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Mobile ad hoc networks (MANETs) are self-configuring, dynamically adaptable networks of heterogeneous devices, some of which can assume the role of routers. Meanwhile, mobile computing is an increasingly pervasive technology worldwide, thus positioning MANETs as a very suitable technology for disaster scenarios. This article addresses the problem of guaranteeing a minimum operational infrastructure...
SIP (Session Initiation Protocol) is standardized by Internet Engineering Task Force (IETF) as a signaling and control functionality for multimedia services (video and audio). However, SIP is a text-based protocol with messages usually exceeding several hundred bytes in size, thus causing high call set-up latency over low bit-rate links. As a consequence, SIP suffers from undesirable delay which is...
Routing, the act of moving information across an Internet work from a source to a destination is one of the major issues in computer network literature. When it comes to mobile ad hoc network, the complexity increases due to various characteristics like dynamic topology, absence of centralized authority, time varying QoS requirements etc. The biggest challenge in this kind of networks is to find a...
The following topics were dealt with: wireless sensor networks; MANET; WLAN; IEEE 802.11; MIMO; OFDMA; scheduling; mobility and resource management; Internet; localization; WiMax; coding; OFDM; media streaming; QoS; security; WiMob; cryptographic protocols; ad hoc networks security; broadband wireless access; wireless and mobile computing.
This paper examines the problem of quality-of-service group communications in a heterogeneous network, which consists of multiple mobile ad hoc networks attached to the backbone Internet. A heuristic multicast algorithm named delay and delay variation multicast algorithm (DDVMA) is proposed. DDVMA is designed for solving the delay- and delay-variation-bounded multicast tree problem, which has been...
Ad-hoc networks are flexible, self-configurable, easy and fast to deploy. Research has been done mainly in the area of routing and for isolated ad-hoc networks. Some efforts are on the way to connect ad-hoc networks to the Internet. It is however important to support QoS aware multimedia applications in this environment. Therefore, a QoS architecture for ad-hoc networks is necessary that can interwork...
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