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OLSR is a well-known proactive protocol for wireless networks. Although very efficient by many points, it suffers from the drawbacks of not taking into account QoS metrics such as delay or bandwidth. To overcome this pitfall, some QOLSR (QoS OLSR) solutions have been designed. Nevertheless, they still provide weak performance regarding QoS metrics. In this paper, we introduce a novel and simple neighbor...
Fairness and system throughput, influenced by wireless interference, are major objectives of resource allocation in wireless networks. Whereas traditionally max-min fairness protocols have been developed for wired networks (where interference is not a factor for network performance), in this paper we investigate the problem of flow routing and fair bandwidth allocation under the constraints of the...
As wireless mesh networks become more popular, there exists a need to provide centralized management solutions, which facilitate network administrators to control, troubleshoot and collect statistics from their networks. Managing wireless mesh networks poses unique challenges due to limited bandwidth resources and dynamic channel quality. A robust management solution should function despite network...
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...
In this paper, we consider the throughput scaling laws for the dual-radio random wireless networks under the well-known protocol model. The dual-radio network is one kind of heterogeneous wireless network, where some among the n nodes in the network are equipped with a secondary wireless interface, which has stronger connectivity and larger data transmission capability than the first normal wireless...
NS2 is an object-oriented simulation tool to simulate and analyze network elements; it is also a powerful tool to develop new protocol and scheme. In the paper, we analyze the features and models of wireless network in details; discuss the simulation process and implementation of wireless network on the basis of NS2. Also, AODV protocol and self-defined MFlood protocol in wireless network are simulated...
In mesh networks, various types of routing matrix are applicable. This document proposes a routing methodology, which makes use of the ETR (Expected Transmission Rate). The ETR is based on a load balancing metric contingent on the linked bandwidth of each integrated node. This routing methodology can be applied when selecting a relay node based on the present link efficiency between the available...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Delay tolerant networks (DTN) are wireless networks where disconnections may occur frequently. In order to achieve data delivery in DTNs, researchers have proposed the use of store-carry-and-forward protocols: there, a node may store a message in its buffer and carry it along for long periods of time, until an appropriate forwarding opportunity arises. Multiple message replicas are often propagated...
Three applications in wireless networks where model-free stochastic learning is applicable, are discussed. The learning based optimization problems are formulated and simulation results are presented. Some open issues are also discussed.
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