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Aiming at the problem of unbalanced distribution of the utilization rate of the charging station, which caused by the disordered charging of a large number of electric vehicles, an orderly charging strategy for electric vehicles is proposed. Firstly, the location of the electric vehicle's charging demand is clustered by using the hierarchical clustering and quadratic division based on K-means to achieve...
In this paper, we present a novel cross-stratum resources integration (CSRI) architecture in fog-computing-based radio over fiber networks (F-RoFN) for 5G services. Additionally, a cross-stratum optimization (CSO) scheme is introduced in the proposed architecture. The CSRI architecture with CSO scheme can effectively pull the remote processing resource locally to implement the cooperative radio resource...
We present a micro edge cloud (MEC) architecture for resource optimization and implement the virtualization of resource. The virtualization solution is demonstrated to verify the overall feasibility and efficiency.
The Microwave Imager Combined Active/Passive (MICAP) is a suit of active/passive instrument package, which has been proposed for demonstrating the capability of remote sensing the sea surface salinity (SSS), sea surface temperature (SST) and wind speed (WS). In this paper, a nonlinear optimization algorithm for simultaneous retrieval of the above parameters is described. The sensitivity of active/passive...
With the wide-adoption of the Internet of Things, heterogeneous smart things, serving as sensor nodes, require to work in a collective fashion for achieving complex applications. To address this challenge, this article proposes a service-oriented wireless sensor networks (WSNs) framework, where sensor nodes are encapsulated and represented as WSN services, which are energy-aware, and typically have...
Long Term Evolution (LTE) carrier aggregation with 5GHz unlicensed national informational infrastructure (UNII) band has been suggested by the industry as a good solution to handle the rapidly increasing amount of data traffic. To provide fair coexistence of LTE-licensed assisted access (LTE-LAA) and Wi-Fi on 5 GHz, several coexistence mechanisms have already been proposed. Nevertheless, as one of...
Unmanned aerial vehicles (UAVs) has shown an increasing interests in agricultural applications. However, single UAV is considered impractical for its limited flight endurance. In this paper, A VND (Variable Neighborhood Descend) enhanced Genetic-PSO (Particle Swarm Optimization) algorithm is applied to optimize the flight paths for a group of Multiple agricultural UAVs. Instead of minimizing the total...
The small companies become increasingly important in bank's lending business. But the challenge is how bank's credit assessment is made in a small amount of time and money. Compare with the big companies, the small companies often need a small amount of cash flow. They may not provide the complete certificates or documents, so that the bank has to collect information of the companies and evaluate...
Auto-localization in wireless acoustic sensor networks (WASNs) can be achieved by time-of-arrival (TOA) measurements between sensors and sources. Most existing approaches are centralized, and they require a fusion center to communicate with other nodes. In practice, WASN topologies are time-varying with nodes joining or leaving the network, which poses scalability issues for such algorithms. In particular,...
For the first time, re-provisioning is introduced into advanced reservation enabled optical transport networks as a novel perspective for optimization. Demonstration results show parallel service re-provisioning (PSRP) can improve the efficiency of network resource significantly.
This study aims to solve the problems of urban road congestion caused by traffic accident with the premise that the accident scene is preserved. First, taking the definite length of the vehicle team as a fixed value and transforming the time issue that it has experienced into a transporting issue of sales volume. And then the corresponding optimization model is established. Finally, the method is...
Cloud radio access network (C-RAN) has become a promising scenario to accommodate high-performance services with ubiquitous user coverage and real-time cloud computing using cloud BBUs. In this paper, we propose a novel multistratum resources optimization (MSRO) architecture for cloud-based radio over optical fiber networks with software defined networking. Additionally, a global evaluation strategy...
Channel-width adaptation can significantly improve the connectivity, capacity and reduce the power consumption in wireless networks. The OFDMA-based channel-width adaptation based on traffic demand has been studied in wireless networks with sufficient spectral resources. However, the traffic demand may not be fully satisfied in resource-limited scenarios. In this paper, we study the channel-width...
Urban rail transits in major cities in China are now forming complex networks due to the rapid development of themselves. Travel speed of urban rail transit network, which is an important index reflecting the service quality, has attracted much attention by those operation companies. Higher travel speed can surely lead to higher inventory turnover and less usage of trains. Till now, most related research...
As the mobile data demand keeps growing, an existing heterogeneous network (HetNet) composed of macrocells and small cells may still face the problem of not being able to provide sufficient capacity for unexpected but reoccurring hot spots. In this paper, we propose a mobile small-cell deployment strategy that avoids replanning the overall network while fulfilling the hot spot demand by optimizing...
A reference network is topologically identical to the existing network in which the generators and loads are not changed while the transmission line capacity will be optimized. By applying a reference network, the optimal transmission capacities of each line could be identified, as it takes annual operational and transmission costs into consideration. A reference network provides a standard to evaluate...
Reliability is one of the most important requirements for smart grid communications. Cooperative communications have been considered for smart grid communications to enhance the transmission reliability. In this paper, we propose reduced-complexity algorithms to minimize the total transmission power of cooperative communications while guaranteeing transmission reliability of the smart grid neighbourhood...
Significant wind power ramp events (WPREs) are those that influence the integration of wind power, and they are a concern to the continued reliable operation of the power grid. As wind power penetration has increased in recent years, so has the importance of wind power ramps. In this paper, an optimized swinging door algorithm (SDA) is developed to improve ramp detection performance. Wind power time...
This paper incorporates the stochastic day-ahead security-constrained unit commitment (DASCUC) within a multi-timescale, multi-scheduling application with commitment, dispatch, and automatic generation control. The stochastic DASCUC is solved using a progressive hedging algorithm with constrained ordinal optimization to accelerate the individual scenario solution. Sensitivity studies are performed...
We propose a global dynamic bandwidth optimization algorithm for software defined optical access and aggregation networks, which can support unified optimizations and efficient scheduling by allocating bandwidth resources from a global network view in real-time. The performance benefits of the proposed algorithm in terms of resource utilization rate, average delay and delay of a single mobile user...
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