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A modern web service or the Internet of Things (IoT) based service is composed of various loosely-coupled service components, called microservices, running on the cloud resource. It enables that the number of active servers be adjusted following the load fluctuation, so an efficient cloud resource allocation is required. This situation is modeled as variable-sized dynamic bin packing problem where...
The installation of residential grid-connected PV systems has been increasing considerably over the past few years. However, these PV installations at the low voltage (LV) distribution networks might have negative impacts on the networks operation. In light of this, the main purpose of this paper is to investigate the impacts of residential grid-connected PV systems on the typical LV network at Malaysia...
Adaptive borrow-repay resource allocation uses the positioning information when temporal communication disconnection is expected. It borrow the required bandwidth and repay later. Obstructions such as tunnels or buildings between satellite terminals and satellites may temporarily disconnect the satellite communication and result in the performance degradation of TCP. In this paper, we propose the...
Due to the expansion of the unmanned aerial vehicle (UAV) market, there is the issue of spectrum scarcity for unmanned aerial system (UAS). Thus, it needs to allocate the resource effectively in the limited bandwidth considering the network environment. In this paper, we propose the frame structure and the resource allocation algorithm which can maximize the network throughput as well as satisfy the...
Recent distributed key-value data stores, such as Aerospike are getting the momentum with ever-increasing need for large-scale real-time data processing. While these data stores can provide significantly improved performance, they still struggle to meet Quality of Service (QoS) during workload surges. In this paper, we address the problem of QoS-aware resource allocation for burst workloads in key-value...
He VMware ESXi hypervisor attracts a wide range of customers and is deployed in domains ranging from desktop computing to server computing. While the software systems are increasingly moving towards consolidation, hardware has already transitioned into multi-socket Non-Uniform Memory Access (NUMA)-based systems. The marriage of increasing consolidation and the multi-socket based systems warrants low-overhead,...
Autonomous mobile robots have been deployed at hospitals to cope with numerous delivery services. Robots deliver items from point to point through autonomous navigation. Conventional robots work individually conducting only one task at a time. This paper proposes a fleet optimization method to maximize the advantages of operating a group of robots concurrently by assigning multiple tasks to a robot...
Graphs are very widely used to represent datasets in various real-world applications. Many algorithms dealing with graphs represent them in the form of sparse matrices and process them through sparse matrix operations. Recently, as the size of a graph increases rapidly, a single-machine-based graph engine has emerged as a general framework for effectively performing large-scale sparse matrix operations...
Many-Task Computing (MTC) has been a new computing paradigm to address challenging applications that cannot be effectively supported through existing HTC or HPC systems. MTC applications often require a very large number of tasks, relatively short per task execution times, and data-intensive tasks. Each task in MTC applications may require relatively small amount of data processing especially compared...
Recent developments in storage class memory such as PCM, MRAM, RRAM, and STT-RAM have strengthened their leadership as storage media for memory-based file systems. Traditional Linux memory-based file systems such as Ramfs and Tmpfs utilize the Linux page cache as a file system. These file systems, when adopted as a file system for SCM, have the following problems. First, current implementation of...
In this paper, we interpret the polar codes based on Plotkin construction perspective. We briefly review the rate allocation for component codes of Plotkin codes and the construction of polar codes based on Gaussian approximation. Then, we show that the recursively constructed Plotkin codes can be a class of polar codes. And also, the polar codes are a class of Plotkin code having minimum threshold.
Activities related to the 3GPP high speed train (HST) scenario in the super high frequency (SHF) band are described in this paper. Communication between an onboard relay station and remote radio head placed along the railway is considered in the scenario. The content of the paper focuses on motivations for considering the scenario in 3GPP, descriptions of the HST channel model, proposed new radio...
This paper describes an adaptive time-to-live (TTL) allocation scheme based on dynamic caching of content delivery network (CDN). This is advantageous in that when a client watches a real-time private broadcast, the load of the origin server can be efficiently reduced when a certain scene from the past is viewed again, and a storage space of a cache server can be efficiently used. Therefore, the adaptive...
In topology representations such as maps, carbon nanotubes, and cellular networks, neighboring cells are assigned different exclusive colors to represent different characteristics. In the previous research, based on the fourcolor theorem, an algorithm that can allocate exclusive channels among neighbors using only four channels in a polygonal cluster sensor network is proposed. The performance of...
This paper focuses on task allocation problem in multi-agent system and we consider the solution for regulating the proportion of groups performing tasks equally to the proportion of task demands. The response threshold model inspired by division of labor observed in insect societies is applied. Each agent converts the information from surrounding environment to the spike and decides its task based...
The conventional multi-target tracking (MTT) algorithms usually suffer from computational intractability problem. The appearance of Iterative Joint Integrated Probabilistic Data Association (iJIPDA) filter solves this problem by providing a tradeoff between the tracking performance and computational cost for computational resource management of sensor systems. However, the iJIPDA filter essentially...
Device-to-device (D2D) communication allows mobile devices to directly communicate with each other without infrastructures. It is considered as a promising solution to improve communication performance such as spectral efficiency and network capacity of the fifth generation (5G) wireless communication systems as well as LTE-Advanced (LTE-A) systems. It generally requires D2D discovery and data communication...
This paper introduces a novel paradigm for resource management in distributed systems, called decision-driven execution. The paradigm is appropriate for mission-driven systems, where the goal is to enable faster, leaner, and more effective decision making. All resource consumption, in this paradigm, is tied to the needs of making decisions on alternative courses of action. A point of departure from...
In this paper, we study a wireless powered communication network (WPCN) in a two-user interference channel, where two hybrid access-points (H-APs) support a user in each cell. In this two cell scenario, the H-APs first transmit the energy signal to charge both users in the downlink (DL) phase. Then, in the subsequent uplink (UL) phase, each user sends its information signal to the corresponding H-AP...
One of the goals of 5G wireless systems stated by the NGMN alliance is to provide moderate rates (50+ Mbps) everywhere and with very high reliability. We term this service Ultra-Reliable Ubiquitous-Rate Communication (UR2C). This paper investigates the role of frequency reuse in supporting UR2C in the downlink. To this end, two frequency reuse schemes are considered: user-specific frequency reuse...
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