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A key property in tactical network environments is that the wireless network itself is typically the major limiting factor in how much information can be shared between users. In such environments, tactical operations often employ group communication protocols (one-to-many or many-to-many) to send information between users. This often results in situations where every message sent gets delivered to...
Software-Defined Networking (SDN) provides the potential for highly configurable, automated networks by separating the control and forwarding functions of network devices. While SDN appears to have many potential benefits for coalition tactical networking, including rapid reconfigurability and improved network situational awareness, there are significant obstacles to overcome. In particular, the low...
The software defined networking is attracting significant attention from business and private end-users. With characteristic of virtualization and programmability, Service Providers (SPs) can pay for the resources in the term of virtual data centers (VDCs) to deploy their services without maintaining expertise. Despite advantages the new paradigm brings, offering VDCs as a service still faces a new...
In the last few years, when two Internet users want to communicate via chatting application, they have to use the same application since each chatting application uses a certain signaling protocol to handle the chatting sessions. As a result, many researchers proposed some mapping architectures when two users want to communicate using different chatting applications by proposing a translation gateway...
Now, SDN (Software Defined Networking) has been accepted as an unavoidable networking architecture since the ONF (Open Networking Forum) foundation, the release of Google's B4 project, and several respective deployments of cloud and transport SDNs. In addition, SDN has been investigated for a basic networking infrastructure for the 5G/IoT's era and an integration between SDN based cloud and transport...
In this paper we describe how we realized event-based signaling for large scale artificial robotic skin. We developed a new algorithm for the event generation on multi-modal skin cells. The skin cells have two modes, the conventional data sampling mode and the event mode. A comprehensive performance evaluation and comparison of these two modes is presented. We perform different experiments on our...
The paper describes a management model where a service provider (SP) maintains multiple protocol modules to exercise the infrastructure resources (e.g., bandwidth, storage, servers) under various environment conditions. Each protocol depicts a distinctive work-flow among the networked entities (i.e., message exchanges and task coordination), incurring a certain amount of resource use. Different levels...
Cloud computing is a relatively new idea where virtualized computers communicating with each other perform a multitude of services such as general purpose computing, cloud services to local applications for storage or processing power, and hosting services for entire applications executed within the cloud. This paper focuses on network bandwidth utilization within the cloud-computing environment and...
Multi-hop broadcast communication is one of the main communication mechanisms to propagate safety and non-safety messages through vehicles in Vehicular Ad hoc Networks (VANETs). In our previous work, we proposed two broadcast schemes, fuzzy logic-based broadcast (FLB) and bandwidth-efficient fuzzy logic-assisted broadcast (BEFLAB). FLB offers high level of reachability where BEFLAB is more bandwidth...
Software-Defined Networking (SDN) is an emerging networking paradigm aims to improve network management flexibility and efficiency. OpenFlow is the popular SDN de-facto standard, which has been prevalently adopted by both academia and industry for research and development purpose. OpenFlow provides rich programmable interface to network administrator to ease traffic monitoring and control. Because...
Time-Sensitive Networking (TSN) standards aim to support hard real-time communication with minimum latency based on Ethernet technology. They can also support the automotive domain considering upcoming and challenging application requirements in intelligent vehicles of the future. Despite all advantages, Time-Aware Shaper (TAS), a significant feature of TSN, increases the network configuration overhead...
Achieving the quality of service (QoS) is an important requirement in a communication network. Satellite communication is posing many challenges due to the limitation of transmission control protocol (TCP) over networks with high latency. To overcome these issues, the wide area network (WAN) optimization provides the data transfer on such long-distance networks. However, this optimization is not able...
This paper presents a novel quality-of-service (QoS) management system for SDN networks with the feature of distributing bandwidth for applications in different slicing networks. Thus, the applications in different sliced networks (different divisions of an enterprise) can have different bandwidth management policies. The proposed system is also integrated into a vCPE framework to achieve network...
Large-scale distributed file system is an important technology for big data sciences. Several works so far have succeeded in high-bandwidth data I/O on multi-point to multi-point remote storage systems. However, for easy use by many scientific researchers, high-bandwidth remote storage tools working on a single client computer are preferable. As for high-bandwidth multi-point to single-point remote...
Control of congestion in case of wireless sensor networks (WSNs) is a very crucial area of interest, where an increase in data transmission by sensor nodes results in a proportionately smaller increase, or even a reduction in throughput. Therefore, more sophisticated techniques are required to combat with network congestion. Various constrained resources of the WSN are to be taken into account while...
Cloud computing has started to gain acceptance for adoption and implementation among organizations, however, this new technology area has already started to deal with security, performance and availability challenges. Within Cloud Security issues being paramount for the corporates, private enterprises, the denial of service attacks are rated as the highest priority threat to the cloud environments...
The improvement of the scalability of routing decisions is quite relevant in modern telecommunication networks. In this regard, effective approach is associated with the implementation of hierarchical routing. This involves carrying out a structural and functional decomposition of the network, based on the introduction and supporting of multi-level routing decisions. However, the existing protocol...
Proofs of Retrievability (POR) is a scheme to build a verifiable storage on a remote server that a client can access the data randomly, and periodically execute an efficient Audit protocol to ensure that the data is intact. In dynamic POR, the difficulties are to maintain the latest version of the data while achieving efficient Update and Audit. In this paper, we propose PDPOR that achieves the best...
While addressing cache coherency in shared memory multiprocessors, traditional snoopy based pure write update (PWU) and pure write invalidate (PWI) protocols have many issues including low bandwidth, high memory latency, and large cache miss ratio. This paper presents a directory based hybrid cache coherence protocol to better address the cache coherency and improve performance of shared memory multiprocessors...
4G/3G Networks have been widely deployed around the world to provide high wireless bandwidth for mobile users. However, the achievable 3G/4G bandwidth is still much lower than their theoretic maximum. Signal strengths and available backhaul capacities may vary significantly at different locations and times, often leading to unsatisfactory performance. Band-width aggregation, which uses multiple interfaces...
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