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This paper proposes a method of TCP multi-pathization for IoT network by SDN. The method distributes packets according to the congestion between paths and IP packet length. Since it is performed over SDN, no changes of existing protocols and devices are required. The authors implement the method by actual IoT devices and evaluate QoS by experiment. The results of the experiment show that the TCP throughput...
With the rapid development of the Internet, especially in recent years, the development of mobile Internet is increasingly rapid. Message push, which is an important way for mobile client to publish information and make communication, plays a significant role in mobile Internet. MQTT protocol is one of the implementation technologies of message push in Android system with low power consumption and...
The ability to provide a high Quality of Service is a crucial aspect in the acceptance and widespread dispersion of the Industrial Internet of Things and it has a key role to enhance the end user experience. The emerging fog cloud computing architectural concept aims to diminish the experienced latency while simultaneously providing a seemingly unlimited quantity of computational power by moving computations...
Standard applications are unable to perform well in delay- and disruption-tolerant networks (DTNs) due to frequent lack of end-to-end connectivity and long communication delays. Such applications must be thus adapted to be able to operate in disadvantageous network conditions. In a previous work on adapting standard tactical applications for DTN networks, we proposed how such an adaptation may be...
The rapid growth in market demands for high-quality, state-of-the-art, and reliable communication services increases the amount of session-control signaling, which is mainly based on the Session Initiation Protocol (SIP). Many research activities dealing with the Quality of Service (QoS) have been focused on media-related service components, whereas signaling-related service components have received...
Streaming media applications generate a sizable part of network traffic and represent a significant proportion of network providers' income. The commitment to user satisfaction can be summarized by different concepts, content providers emphasizing quality of experience (QoE), whereas network providers are more focused on quality of service (QoS). Measuring QoS parameters, and understanding the relationship...
Internet of Things (IoT) applications consist of diverse Things (sensors and devices) in terms of hardware resources. Furthermore, such applications are characterized by the Things' mobility and multiple interaction types, such as synchronous, asynchronous, and streaming. Middleware IoT protocols consider the above limitations and support the development of effective applications by providing several...
The Trafïîc Flow Description (TFD) option is an experimental option of the IP protocol, designed by the Authors, able to assure signaling for QoS purposes. The option is used as a carrier of knowledge about forthcoming traffic. If planning horizons are short enough, this knowledge can be used for dynamic bandwidth allocation. In the paper an analysis of QoS assurance using the TFD option is presented...
Trading of cloud services suffers from the lack of market liquidity. Market liquidity ensures sustainable market activity of cloud services and it can be enhanced by introducing novel negotiation processes between the cloud vendors and cloud buyers. Such negotiation processes are ice breakers in case of rigid customer requirements and/or service offers. In this paper we propose a formal model of Service...
Software-Defined Networking (SDN) is a new paradigm that is attracting significant attention from both academy and industry. In recent years, increasing research efforts have addressed the conception of programming interfaces—northbound APIs—which allow business-applications to properly communicate with SDN controllers and program the network. However, most of current SDN controllers still offer low-level...
With the advancements in electronics and communication, the electronic devices are being interconnected to create a controlled environment. The number of devices that are being connected to the Internet is booming day-by-day. However, the existing protocols are verbose and overburden the embedded devices having constrained resources in terms of memory, computational power, battery etc. As a relief,...
In the current Internet system, there are many problems using anonymity of the network communication such as personal information leaks and crimes using the Internet system. As the study for solving this problem, there is the study of Policy Based Network Management (PBNM). This is the scheme for managing a whole Local Area Network (LAN) through communication control for every user. As one scheme...
The backbone of Internet of Things (IoT) is the communication protocols which seamlessly integrate thousands of nodes and enable a light weight data transfer process. This research is to analyze the efficiency and applicability of different M2M protocols that are available for IoT communication. For the purpose of evaluating the protocols a Raspberry-Pi with Raspbian OS and a temperature sensor are...
By the virtue of blooming automation industry and wireless connectivity, all the devices within the home can be connected. This improves the comfort, energy efficiency, indoor security, cost savings of the home. Small and constrained embedded devices are used to remotely monitor the conditions within home and control the home appliances. In such case, power consumption and network bandwidth become...
The Internet of things (IoT) interconnects every object of our living space to the Internet. Its adoption relies on the settling down of robust security solutions, especially key management ones. In this paper, we address key management protocols in the Internet of things (IoT). Since the IoT interconnects heterogeneous nodes, key management protocols used in the Internet might not be adapted for...
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...
In this paper, a realtime testbed for Software Defined Networks (SDN) was implemented using Raspberry Pi as OpenFlow (OF) switches. The implemented testbed provides practical development and testing environment for SDNs. Open vSwitch (OVS) was used to observe the flows and events in the network. With the POX integration, this paper easily provide detailed analysis results for any testing process....
Mobile and smart health care exists some questions and challenges including signs and symptoms information collection, remote real-time detection and online information push. In this paper, remote network vital sign information monitoring system and cloud data storage platform is designed and implemented to solve the problems mentioned above. The system is realized based on STM32 wearable hardware...
The Traffic Flow Description (TFD) is a new option of the IP protocol, designed by the Authors for Quality of Service (QoS) signaling. In contrast to the traditional, long-term, RSVP-based signaling, which is able to serve only static QoS assurance, the TFD option provides signaling on different time horizons, enabling dynamic QoS assurance. The TFD option conveys information about forthcoming traffic...
The paper describes a management model where aservice provider (SP) maintains multiple protocol modules to exercisethe infrastructure resources (e.g., bandwidth and processing cycles) under various environment conditions. Here, each protocol exhibitsa certain degree of performance optimality and service resiliencein distinct operating regions of the network infrastructure and theenvironment. At run-time,...
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