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In recent years, along with the increasing popularity of multi-hop wireless networks, there has been a growing demand in the coupling of these networks to external ones such as the Internet. As traffic destined for external networks increases, special attention is required not only in gateway selection, but also in optimized routing and scheduling in order to maximize the network performance. In this...
In wireless mesh networks, joint optimization of routing and link scheduling within a time-division multiplexing approach is commonly sought to provide end users with high data rates. However, the strategies proposed to this end usually proceed by means of complex optimization models, which also often rely on oversimplified assumptions, especially for what concerns wireless interference. In the present...
The rapid development of communication technology provides a enormous support for municipal mesh network. Nowadays many cities across the world have setup or prepare to setup wireless mesh networks (WMNs), includes Beijing city for its 2008 Olympic Games. However, Internet Gateway (IGW) placement, which is one of essential issues in a WMN design, has not been considered seriously in practice both...
This paper focuses on the congestion control problem on a multi-hop path in mobile wireless networks. Conventional congestion control algorithms do not consider highly mobile devices in a network where link status changes frequently. The assumption of link validity in proactive algorithms results in high network overhead. In this paper, a new on-demand method of congestion control in multi-hop communication...
Infrastructure wireless mesh networks are a promising technology for cost-effective broadband provision which utilise consumer access points to relay data through the network, hence requiring little fixed infrastructure. Because of this, during the initial network rollout, relatively low investment in infrastructure has the potential to give good levels of coverage within the network area. However,...
In a wireless mesh network, the traffic is aggregated at mesh router and most of them forwarded towards the Internet through GW (Internet gateway). Thus easily leads to a bottleneck for network performance at GW. Aimed to this problem ,we firstly treated the GW and mesh router as the alike node equivalently. Then used the logarithm-normal distribution model of shadow affect in wireless communication...
A wise network planning becomes the most important phase in determining the network efficiency. In this paper we consider the wireless mesh network (WMN) planning problem where no much work has been done. We propose a new multi-objective optimization model for planning WMNs, where the two conflicting objectives, namely network deployment cost and network channels' interferences, are simultaneously...
A modern wireless network can be neither successfully deployed nor successfully expanded without proper planning. In this paper we consider the wireless mesh network (WMN) planning problem where not much work has been done. We propose a more realistic multi-objective approach to model this problem where the two conflicting objectives of total deployment cost and network throughput are to be optimized...
Wireless mesh network deployments are popular as a cost-effective means to provide broadband connectivity to large user populations. As the network usage grows, network planners need to evolve an existing mesh network to provide additional capacity. In this paper, we study the problem of adding new capacity points (e.g., gateway nodes) to an existing mesh network. We first present a new technique...
Several factors greatly influence the quality of service (QoS) in multihop wireless mesh networks (WMNs). These include the transmission range, number of gateways, number of nodes served by each gateway, gateway location, relay load and access fairness. While finding an optimal solution to simultaneously satisfy the above constraints is known to be MV-hard, near optimal solutions can be found within...
Infrastructure wireless mesh networks promise a flexible and cost-effective means for providing last-mile delivery for broadband access, particularly in rural areas. Each customer forwards traffic between their neighbors and an Internet gateway, thus providing high coverage for little upfront investment. However, particularly during the early stages of deployment, seed nodes may be necessary to provide...
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