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Load balancing and delay optimizing play significant roles in improving network performance. However, in the current networks, only local load balance (LB) and mean delay optimization mechanisms are adopted, which ignore the jitter and the network's status. In this paper, a dynamic LB algorithm is proposed to optimize the network delay with a global view (LBGV). It makes a traffic distribution decision...
Usage of wireless networks is rising in popularity. In this setting different kinds of networks for indoor environments, such as Ad-Hoc, IEEE 802.11b (Wi-Fi) and Wireless Distribution System (WDS) has been developed. In this paper, an analysis of Quality of Service (QoS) has been made for each network in order to verify the values of bit rate, delay, jitter and packet loss. For performance comparison...
Vehicular Adhoc NETworks (VANET), a special category of Mobile Adhoc Networks (MANET) are networks formed by vehicles which help the vehicles communicate with one another. The challenging mode of communication in VANETs is the video mode which can be used to give faster and clear information to the end users in vehicles. The transmission of video streams is prevalently seen in the applications of...
Industrial application of wireless sensor networks require timelines in exchanging messages among nodes. IEEE 802.15.4 is a standard to address the need for low-rate low-power low-cost wireless networking. In wired connection, the components such as actuators or sensors provides high performance besides wired links consist of many mechanical problems. Hence to achieve low latency, high performance...
Virtualization is a technology and a trend most studies and industries are putting their interest on. The capability of virtualization to carry out, perform, and deliver the task which a physical computer/server does is just one of the many benefits it has. A term open source is also buzzing the internet world; platforms OpenNode, Proxmox, and OpenVPN are examples of such. This paper evaluated the...
With the wireless technologies being widely used, it is for sure that all types of wireless networking will become more and more popular now and in the near future. Therefore, measurement-based performance evaluation of different wireless network standards and traffics is becoming very important. In this research paper, the wireless local area network performance differences between IEEE 802.11n and...
Wireless Sensor Network has been widely used in various application areas like patient care, habitat monitoring, sensing physical parameters, traffic monitoring and so on. The resource limitation of sensor nodes has forced the researchers to innovate new techniques for improving the network lifetime. Many techniques have been proposed like clustering, data fusion, data filtering, routing in homogenous...
Internet has had offered plethora of services availed by the users either free of cost or at unimaginable price. Voice over Internet Protocol (VoIP) is also one of such boons provided by the net. It is a technique for transferring Voice (analog signals) over the Internet (packet switched based) using Internet Protocol (IP). Voice transmission through a non-circuit switched network rather than a dedicated...
The paper focuses on analyzing the affects of wireless mesh networks with some mobile nodes on Voice over Internet Protocol service quality. Our interest is to examine this in simulation to learn how to better deploy voice services on such a network in a rural community. Wireless mesh networks' unique characteristics like multi-hop, node mobility, coverage, and medium usage cause quality of service...
Wimax is an broadband wireless technology based on IEEE 802.16. It is very helpful and cheaper than other possible solutions. It is purely based on the 4G technology for the upcoming generation. In wireless technology the major problem is speed, Quality of Service, data rates in order to overcome that they going for some valuable technology. In this paper we consider WIMAX and WLAN for controlling...
This paper presents the development of next generation e-learning systems for real-time video, voice conferencing and streaming technology over secure socket layer (SSL) IPv6 in campus environment. Development of the V2oIP e-learning systems has contributed a significant value to distance learning. The aim of this study is to design real time interactive learning systems with security over SSL IPv6...
This paper presents an analysis of the effects of multiple Quality of Experience (QoE) parameters applicable to the Network domain. The aim was to investigate the best candidate parameters for model development. The Taguchi orthogonal array method was used to achieve this aim by enabling a reduction in the number of trials required in our experiments whilst maintaining accuracy of the results. This...
Wireless Local Area Network (WLAN) has enabled greater communication capabilities compared to LAN counterpart. However, when it comes to quality of service (QoS), WLAN has lower reliability, where it has higher latency and packet-loss, especially for real-time streaming applications such as voice over internet protocol (VoIP) and multimedia. Thus, improving QoS in WLAN is a major research challenge,...
Video streaming is the real time delivery process of video to the user's media player services. In multimedia streaming technique, the user can access data while it is being transferred. To meet the demand of providing high-quality of video streaming, it is important to design suitable QoS model. Hence, in this project, we designed around streaming services using an Internet topology on expected video...
Wireless Mesh Networks (WMNs) extend the range of the IEEE 802.11 Wi-Fi beyond the one-hop range. This has made it an attractive research topic given the exponential growth in Wi-Fi portable devices. However, the multi-hop nature of WMNs creates many new challenges, primarily in the Medium Access Control (MAC) layer. Specifically, the IEEE 802.11 Medium Access Control (MAC) layer is designed for a...
This paper considers the IEEE 802.11g network behavior in different situations and topologies for video transmission. They were precisely chosen with the focus put on gathering as much information about the network as possible. Speaking of measuring the network, the parameters as bandwidth, delay, jitter and packet loss, were obtained as results of simulations performed in NS-2 (Network Simulator...
Period selection based techniques for resource distribution among concurrent control tasks have gained significant research interest in the last decade. The application of these techniques in the networked control environment may give rise to an asynchronous data communication between the sensor and the controller and may result in a variable delay in the loop. This work investigates the degrading...
This paper presents a low power clock and data recovery (CDR) circuit for a wireless body sensor node. The proposed circuit interfaces the RF receiver output with the digital processing. It consumes 50nW at 100kbps. It uses a delay locked loop (DLL) that is calibrated in one-shot fashion to save power, locking over 18X faster than prior art. The proposed circuit is fabricated in a 0.13?m CMOS technology...
In WiMAX architecture to avoid congestion at the base station, a mechanism namely WiMAX Fair Intelligent Congestion Control (WFICC) was proposed in [11]. WFICC ensures that the traffic is scheduled in such a way that the base station output buffer operates around a target operating point, without violating the Quality of Service (QoS) requirements of connections. However, only preliminary results...
This paper presents the performance evaluation of Voice over Internet Protocol (VoIP) in Multi-hop Wireless Network (MWN) developed using Multi-radio Access Relay (MAR). The MWN is deployed using 3 MARs in Universiti Teknikal Malaysia campus. The performance of VoIP are investigated using Real Time Protocol (RTP) and Compress Real Time Protocol (CRTP) header techniques. RTP and CRTP are used to transport...
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