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The paper presents a continuous comparison comparator as an IP block. The comparator is developed in a standard semiconductor manufacturing process of 180 nm and can be applied in the design of system-on-a-chip devices, a dual-slope ADC in particular. This ADC can be used in the design of multimeters, digital thermometers, and other devices. The comparator is modeled in Cadence software. The result...
With the rapid development of hardware and the improvement of control performance requirements, digital control is widely used in power electronics. And due to the mature analysis methods and convenient implantation, the traditional linear control strategies, such as PID control, are directly applied to the design of digital controllers in industrial application. However, as the control delay and...
With the omnipresence of the Internet of Things and poorly secured devices with it in combination with high bandwidth networks, Distributed Denial of Service (DDoS) attacks have become one of the biggest threats for network security. With high bandwidth attacks flooding network infrastructure, the pressure to secure the attack targets shifts more and more to the network operators. Often without direct...
Quality of Service (QoS) in data networks refers to control mechanisms for reservation of network resources and traffic prioritization for specific network applications and types of data flows. Every network application can have their own demands for specific QoS parameters, such as bandwidth, delay, jitter or packet loss. Rapid grow of Internet has initiated the development of the Internet protocol...
Ad-Hoc and Delay-Tolerant Networks (AHDTNs) can be very useful in environments where more traditional networking technologies fail. Determining the practical effectiveness of AHDTNs can however be challenging. We review design considerations and practical experience with a novel mechanism for monitoring and analyzing the performance of AHDTNs. This new mechanism, AllNet Trace, somewhat resembles a...
The economic aspects of peering and transit interconnections between ISPs have been extensively studied in prior literature. Prior research primarily focuses on the economic issues associated with establishing peering and transit connectivity among ISPs to model interconnection strategies. Performance analysis, on the other hand, while understood intuitively, has not been empirically quantified and...
Explosion of mobile traffic will bring a heavy burden to the core network, and rapid growth of mobile devices, as well as increasing demand for delay-sensitive services poses severe challenges to future wireless communication systems. In this regard, local breakout is a promising solution to save core network load and, more importantly, to reduce end-to-end (e2e) delay of packets with local significance...
For reenterable models of IP networks with dynamic routing according to RIP protocol, measuring subnets for QoS parameters evaluation have been essentially modified and extended. Online algorithms of statistical analysis have been specified by colored Petri nets. The mean and variance of the packet delivery time have been evaluated. As a result, the computation precision has grown and an essential...
The performance evaluation in the case of communication radio networks is different from that the single-link communication. The formation of complex heterogeneous communication networks due to the different levels of communication makes the lack of a unified and systematic assessment framework in terms of assessment principles, criteria, methods and evaluation index systems. According to the network...
Qos of broadband network is important. ISPs have some methods for evaluate it. But they are not efficient enough. This paper present a new method in which delay and scale of windows of TCP messages are used for evaluating performance of broadband. Comparison between delay or scale of window s of samples is the core idea of the method. There are two kinds of comparison. One is absolute terms of above-mentioned...
IPv6 is an ultimate solution to the Internet address exhaustion. It is believed, the protocol will be requested by not only human but also everything on the earth surface. Furthermore, the improvement on the protocol is important to achieve IP packets transmission efficiently. Processing technology has been improved to become very fast packet processing both in host as well as intermediate systems...
In the rapid growth environment, internet plays a vital role in each and every one's life. As to reach high performance communication in the network, electronic devices are the most important element to forward multimedia messages from one place to another place. Whenever unaccountable messages are passing from one node to another node there are heavy collision and congestion in the network because...
High accurate time synchronization is very important for many applications and industrial environments. In a computer network, synchronization of time for connected devices is provided by the Precision Time Protocol (PTP), which in principal allows for device time synchronization down to microsecond level. However, PTP and network infrastructures are vulnerable to cyber-attacks, which can de-synchronize...
This paper is an up-to-date short overview of the QoS for Satellite IP networks. Some definitions, parameters and requirements for QoS are given. IP QoS Architectures are presented and various contributions to end-to-end QoS at each layer are included. DVB-RCS and evolution to standard DVB-S2 - RCS to support emerging Internet services via satellite is also briefly approached. Possible integration...
Named Data Networking (NDN) has natural advantages in the consumer mobility support for its design characteristics, while the producer mobility support was left unspecified. Some producer mobility support schemes have been proposed in recent years, which better solved the huge overhead caused by the route aggregation in normal NDN, yet critical issues like long handover latency and high packet loss...
Serving user requests from near-by caches or servers has been a powerful technique for localizing Internet traffic with the intent of providing lower delay and higher throughput to end users while also lowering the cost for network operators. This basic concept has led to the deployment of different types of infrastructures of varying degrees of complexity that large CDNs, ISPs, and content providers...
Distribution networks are increasingly hosting embedded generators, most of them converting renewable energy primary sources. These units are usually interfaced with the main network by means of static power converters. Grid codes have recently introduced stabilizing functions to engage distributed plants in supporting the main system stability during network events and consequent voltage/frequency...
To speed up the recovery from network failures, an extensive list of methods have been proposed. Many failure-recovery methods are proposed based on tunneling or marking, which increase the packet processing burden on routers and consume extra bandwidth. With neither tunneling nor marking, existing methods guarantee recovery from any single-link failure if a detour for the failed link exists, but...
Centralized RAN processing has been identified as one of the major enablers for 5G mobile network access. By moving the baseband units (BBU) to the Cloud, multiple instances can be instantiated on the fly, serving several Remote Radio Head (RRH) units. The goal is to satisfy the existing demand of particular geographical areas, whereas drastically reducing the overall CAPEX and OPEX costs of the mobile...
Cross-layer design is a suitable approach that can address some of throughput challenges for future multimedia applications. In this regard, effective capacity concept offers a suitable metric to assess the implications that physical layer design may have on link layer performance. However, most reported studies in this aspect consider the case of downlink scenario for convenience multiple input multiple...
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