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Placement of mesh nodes is an important and challenging issue in the research of wireless mesh networks (WMNs). It is important that the placement occurs after careful network planning, in order to minimize deployment cost while satisfying the requirements of network performance. In this paper, we study the problem of cost-effective node placement (CeNP) in WMNs. First of all, we define the objective...
Opportunistic networking-forwarding messages in a disconnected mobile ad hoc network via any encountered nodes-offers a new mechanism for exploiting the mobile devices that many users already carry. However, forwarding messages in such a network is trapped by many particular challenges, and some protocols have contributed to solve them partly. In this paper, we propose heterogeneous content-aware...
Load balancing is a key component of P2P network. In this paper, we present a new load balancing scheme for Chord system, called dynamic group-based duplications scheme (DGDS). Firstly, we divide Chord ring into several continuous groups, in which light-loaded peers share the load of overloaded peers. Secondly, DGDS computes out how many duplications are required to lighten the load of overloaded...
In this paper, we investigate resource allocation in OFDMA cooperative networks with Best effort services and real time services. We design a utility framework to satisfy QoS requirements of different applications. We define network utility as functions of data rate, delay, and packet loss. A utility function is assigned to user-relay pairs or only the user over each subcarrier, and the relay and...
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