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Ultra-dense heterogeneous networks (UD-Het- Nets) with non-uniform traffic hotspots are important scenarios for future wireless networks, which, however, impose challenges on efficient framework and algorithm design due to the heavy congestion incurred by massive hotspot users. Considering these challenges, this article first develops a two-layer interference-aware heterogeneous relay network architecture...
The increasing capabilities of mobile devices (MDs) enable users to run desktoplevel applications and tasks anywhere. However, the local execution of resourcedemanding mobile tasks, such as real-time rendering in 3D gaming, may result in poor performance and short battery lifetime on MDs. One solution to the resource scarcity problem on MDs is to offload resource-demanding mobile tasks to surrogates,...
In this paper, we focus on the dynamic spectrum access of infrastructure-based cognitive radio networks, a primary network and multiple secondary networks, which are collocated with each other. To improve network performance of all networks, we propose a cooperative communication-aware spectrum leasing framework. In the proposed framework, the primary network leverages secondary APs as cooperative...
Recently, cyber foraging has been proposed to reduce the application response time and to save energy for the mobile hosts by offloading the resource-demanding tasks to the surrogates via wireless networks. However, communication overheads are further aggravated in the cyber foraging network (CFN), where multi-hosts share the same spectrum to offload tasks. Therefore, it is important for the CFN to...
In this paper, we focus on the dynamic spectrum access of two infrastructure-based cognitive radio networks, primary network and secondary network, which are collocated with each other. To improve network performance of two networks, we propose a cooperative communication-aware spectrum leasing framework, in which, primary network leverages secondary users as cooperative relays, and decides the optimal...
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