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In this paper, we propose a throughput-maximum resource provision scheme in the OFDMA-based Wireless Virtual Network (WVN). The proposed scheme takes the dynamics of both traffic arrivals and wireless channels into consideration. Furthermore, we consider a more flexible service contract where average resource provision is guaranteed for each slice. As it is practically impossible to know future traffic...
In this work, we study the effect of energy harvesting in a cognitive shared access network with delay constraints on the primary user. We model the distribution of secondary nodes by a homogeneous Poisson point process (PPP), while the primary user is located at fixed location. The secondary users are assumed to have always packets to transmit whilst the primary transmitter has bursty traffic. We...
In this paper, we analyze a shared access network with one primary device and randomly distributed smart objects with secondary priority. Assuming random traffic at the primary device and saturated queues at the smart objects with secondary priority, an access protocol is employed to adjust the random access probabilities of the smart objects depending on the congestion level of the primary. We characterize...
Digitally controlled system has been widely used for the multi-inverter systems. However, the effects of time delay have not been fully studied in the grid-connected large-scale photovoltaic (LSPV) systems. To address this issue, this paper develops the general Norton model for grid-connected LSPV models by adding delay module into the inverter control system model. Meanwhile, based on the model of...
In this letter, the delay-aware uplink user association problem in conjunction with power control is considered for energy efficiency in heterogeneous cellular networks. We aim at minimizing the energy consumption of user terminals under the delay constraints. Due to the mutual interference and the coupled queue dynamics, the problem is NP-hard and thus is difficult to solve. To overcome this issue,...
Bilateral teleoperation technology has caused wide attentions due to its applications in various remote operation systems. However, to really realize teleoperation requirements, there still exist some challenging control issues: a) the communication delay between master and slave manipulators may lead to system instability or performance decreasing; b) in some applications, the sensors are not easily...
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