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Aimed to reduce the overheads using the Time Management (TM) in HLA based distributed simulations, the TM based on publish-subscribe topology information is investigated. The condition under which the message may be received before its causal predecessor is firstly analyzed. And then, the TM algorithms using vector clock are put forward, in which the condition is judged before the clock is comparing...
Limited resources in Wireless Sensor Networks (WSNs) are the key concern that needs to be given a careful consideration when studying virtually any aspect of a sensor network. Therefore, energy demands and radio bandwidth utilization should be addressed, especially in one-to-many communication. To define the problem, this article presents and categorizes the most common WSN multicast procedures depending...
The paper proposes an FPGA-like approach to on-chip communication and comes up with a design methodology where switches are avoided and where two any IPs are connected if and only if they are communicating. It avoids the problem of costly (time, area, energy) intermediate hop counts of on-chip networks (NOCs) between any two source-destination pairs. The second novelty is that without knowing the...
Due to the heterogeneous, opaqueness and dynamic nature of Cloud Computing, existing MapReduce approach is not suitable for perform Parallel Computing on the cloud. In this paper, we propose a modified MapReduce framework which extracts the physical network topology information from the Virtual Machine Monitor (VMM) feature of VMs, in order to exploit dynamic resource allocations, and hence enable...
As SoC applications demand high performance and integration density, SoC designers consider multiple aspects during the design phase. This paper presents a Network-on-Chip (NoC) design methodology for generating high quality interconnects for multi-core System-on-Chip architectures. The design process incorporates the main objectives of low power and high performance during topology synthesis. A rendezvous...
In this paper, we investigated the problem of finding an efficient topology for delay-constrained data in WSNs. As we know topology control is one of the important mechanisms designed for decreasing energy consumption in WSNs. Since topology control may increase the end-to-end delay, one of the criteria's should be considered in topology control algorithms is delay constraint. Most existing works...
This work investigates the performance of Optical Burst Switched (OBS) mesh networks using Wavelength Division Multiplexing (WDM) and Localized Functional Resources (LFC). These OBS networks were designed to have the same amount of wavelengths in all the links of a mesh topology, but some nodes or links chosen from the knowledge of network utilization, have additional functional resources as Wavelength...
In order to reach a high performance level in a street lighting control system, two important aspects must be taken into account: the selection of the adequate communication protocol, on the one hand, and the selection of the network topology that supports the architecture, on the other hand. Given these circumstances, the present paper focuses on an assessment of the performance of the mesh and tree...
The field of Wireless Sensor Networks (WSN) is undergoing a major revolution, opening the prospect of significant impact in many application areas (safety, health, environment, food safety, manufacturing, telecommunications. Routing isfundamental such a network because there is no infrastructure that manages the information exchanged between network nodes. Two major classes of routing algorithms are...
Rectangular Mesh is the most commonly used topology in the field of Network-on-Chip (NoC) due to its high regularity, symmetry and scalability. In this paper, we examine Honeycomb topology as another candidate for NoC architectures. Based on the simulations of Mesh and Honeycomb routers and network, we compare these two topologies in terms of power consumption, area cost and communication delay. Results...
Skyline queries have played an increasingly important role in many applications such as web mining, multi-preference analysis and decision making. Most existing studies mainly focus on centralized systems, and skyline query processing in distributed environments is still an emerging and challenging topic. In this paper we propose SkyStorm, a delay-bounded skyline computing approach by exploiting the...
Increased commodity use of mobile devices has the potential to enable mission-critical monitoring applications. However, these mobile-enabled monitoring applications have to often work in environments where a delay-tolerant network (DTN) is the only feasible communication paradigm. Detection of complex (composite) events is fundamental to monitoring applications. However, the existing plan-based CED...
The multicast communication is one of the fundamental types of the modern network connections. Even though the concept is not new, and exists as a part of the TCP/IP protocol stack, the reality of the backbone networks has been rejecting the technology, mostly due to the economical reasons. On the other hand the development of the basic point to point connections increased the overall Internet capabilities...
In the CMOS technologies below 65 nm the wire delay dominates the gate delay. 3D IC design is one solution to deal with this problem. We propose in this work to implement two different MPSOC architectures based on Mesh and Butterfly NoC topologies. We use the 3D IC technology from the Tezzaron Company. Thanks to its symmetry, the mesh based NoC architecture is easier to implement compared to the other...
Wireless sensor networks are appealing to researchers due to their wide range of application potential in areas such as target detection and tracking, environmental monitoring, and tactical systems. However, lower sensing ranges result in dense networks, which bring the necessity to achieve an effcient medium access protocl subject to power constraints. Various MAC protocols with different objectives...
Using Peer-to-Peer (P2P) overlay networks have become a progressively popular approach for streaming live media over the Internet due to their deployment simplicity and scalability. In this paper, we propose a new hybrid push-pull live P2P video streaming protocol called PPM that combines the benefits of pull and push mechanisms for video delivery. Our main goal is to minimize the network end-to-end...
Equal-Cost Multipath (ECMP) routing has been widely adopted to perform load balancing. With ECMP, a router can maintain multiple next hops for a destination IP prefix. The most common method used by such routers is to split traffic with per-flow basis evenly among those next hops. This approach, although simple, cannot achieve optimal load balancing. In this paper we study the optimal configuration...
This paper presents a correction technique of microwave/digital signal integrity with a negative group delay (NGD) active circuit potentially integrable. A theoretical approach illustrating the functioning of the NGD topology is established. The method for synthesizing the NGD circuit in function of the signal degradation parameters is developed. The relevance of the technique is verified with a proof...
3D Tele-immersive systems create real-time multi-stream and multi-view 3D collaborative contents from multiple sites to allow interactive shared activities in virtual environments. Applications of 3DTI include online sports, tele-health, remote learning and collaborative arts. In addition to interactive participants in 3DTI environments, we envision a large number of passive non-interactive viewers...
As the number of processing elements in the future Networks on Chip (NoC) increases from multi-cores to many-cores, the role of the interconnection communications becomes more critical. The number of cores on a System on Chip (SoC) will reach thousands in the near future as predicted by the International Technology Roadmap for Semiconductors (ITRS). Currently, NoC interconnections are mostly implemented...
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