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Regarding the dynamic nature of cognitive radio networks and the delay of the central decision algorithms due to collecting necessary information in a multi-hop wireless network, distributed resource allocation algorithms are of crucial importance. In this paper we propose a new distributed resource allocation algorithm that properly selects link/frequency in a multi-hop cognitive radio network for...
Wireless multihop networking has been typically considered for industrial, military, or sensing applications [1][2]. Nevertheless, it has not been explicitly considered thus far for large-scale commercial access networks. This is mainly due to the fact that existing multihop networking technologies do not readily scale up in terms of number of terminals. Instead, an alternative packet relaying scheme...
Wireless Mesh Networks (WMNs) have received much attention in recent years thanks to their desirable features such as its capability of enhancing coverage with low transmission power. A WMN is dynamically self-organized and self-configured, with the nodes in the network automatically establishing and maintaining mesh connectivity among themselves. Mobility management, with provisioning of Quality...
Advances in wireless communication technologies as well as the low cost of wireless equipment have increased the ubiquity of network connectivity, as is illustrated by the large deployment of IEEE 802.11 access points (APs). Anytime, anywhere, users are being connected to networks and consequently they expect more services on their mobile devices. Internet access from vehicles, in particular short...
Content distribution applications such as video streaming, file sharing, and network gaming are posing strict requirements on the development and enhancement of communications technologies, architectures, and protocols. Collaboration is one of the central techniques for designing enhanced communication networks. In this work, we address the problem of collaborative content distribution where destination...
Sensors are emerging devices on a world leading to ubiquity and pervasiveness. For the sake of users' convenience, the organization of these sensors in operational networks must be done in an autonomic and self-sustained way. This paper proposes BiO4SeL (Bio-Inspired Optimization for Sensor Network Lifetime), a biologically-inspired routing algorithm for sensor networks where the main goal is autonomy,...
We investigate the energy-time efficiency of two reactive route discovery protocols (BERS and DTC) with chase packets in the expanding ring search (ERS). BERS introduces deliberately waiting time in broadcasts of RREQs. DTC uses a threshold to switch between two different channel speeds to allow the chase packets to catch up with fulfilled RREQs. Taking an analytical approach, we gain the insight...
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