Abstract.
Heterogeneous wireless sensor network (heterogeneous WSN) consists of sensor nodes with different ability, such as different computing power and sensing range. Compared with homogeneous WSN, deployment and topology control are more complex in heterogeneous WSN. In this paper, a deployment and topology control method is presented for heterogeneous sensor nodes with different communication and sensing range. It is based on the irregular sensor model used to approximate the behavior of sensor nodes. Besides, a cost model is proposed t ....etc

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2G-5G Networks: Evolution of Technologies, Standards, and Deployment



ABSTRACT

This article presents an overview of the evolution of technologies, standards, and deployment from second to fifth generation mobile networks with emphasis on current and future trends in the areas of wireless networking, multimedia technology, network architecture, and network services. Related research in the development of future mobile systems has been highlighted.

INTRODUCTION

The fourth and fifth generation ....etc

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Introduction

The emergence of optical transport systems has dramatically increased the raw capacity of optical networks and has enabled new sophisticated applications. For example, network-based storage, bandwidth leasing, data mirroring, add/drop multiplexing , dense wavelength division multiplexing , optical cross-connect , photonic cross-connect , and multiservice switching platforms are some of the devices that may make up an optical network and are expected to be the main carriers for the growth in data traffic.

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ABSTRACT
In IP routing each packet travels from one router to the next, each router makes an independent forwarding decision for that packet. That is each router analyses packet header, and each router runs a network layer routing algorithm. Each router independently chooses a next hop for the packet, based on its analysis and the results of running the routing algorithm.
In conventional IP forwarding a particular router will typically consider two packets to be in the same FEC(forward equivalence class) if there i ....etc

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As sensor networks edge closer towards wide-spread deployment



security issues become a central concern. Sensor networks have been identified as being useful in a variety of domains to include the battlefield and perimeter defense. So far, much research has focused on making sensor networks feasible and useful, and has not concentrated on security.
We present a suite of security building blocks optimized for resource constrained environments and wireless communication. SPINS has tw ....etc

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QUALITY FUNCTION DEPLOYMENT

Presented By:
Vijay

Our basic intent is to support your work as a requirements engineer with concepts and practices from QFD, in other words, to take what we can from QFD and apply it in our requirements engineering practice. In order to do this, we will briefly review the following:

Definition “ what is QFD?
Benefits “ why QFD?
History “ where did QFD come from?
Software Engineering Context “ how does QFD fit into SE?
Requirements Engineering Context ....etc

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INTRODUCTION


Quality function deployment is the conversion of the consumer's demands into quality characteristics and developing a designed quality for the finished product by systematically deploying the relationships between the demands and the characteristics, starting with the quality of each functional part and extending the deployment to each part process.
Dr, Mizuno, professor emeritus of the Tokyo institute of technology, is credited with initiating the quality function deployment (QFD) system. The first application of QFD was at ....etc

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Selective Encryption of Still Image
Abstract: In some applications, it is relevant to hide the content of a message when it enters an insecure channel. The accepted view among professional cryptographers is that the encryption algorithm should be published, whereas the key must be kept secret. In the field of image cryptography, the focus has been put on steganography and in particular on watermarking during the last years. Watermarking, as opposed to steganography has the additional requirement of robustness against possible image transform ....etc

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Incremental deployment service of Hop by hop multicast routing protocol
Abstract: IP multicast is facing a slow take-off although it has been a hotly debated topic for more than a decade. Many reasons are responsible for this status. Hence, the Internet is likely to be organized with both unicast and multicast enabled networks. Thus, it is of utmost importance to design protocols that allow the progressive deployment of the multicast service by supporting unicast clouds. This paper presents HBH (hop-by-hop multicast routing protocol). HBH adop ....etc

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ASTN (Automatic Switched Transport Network) allows traffic paths to be set up through a switched network automatically. The term ASTN replaces the term ASON (Automatically Switched Optical Network) and is often used interchangeably with GMPLS (Generalized MPLS). This is not completely correct as GMPLS is a family of protocols, but ASON/ASTN is an optical/transport network architecture. The requirements of the ASON/ASTN architecture can be satisfied using GMPLS protocols developed by the IETF or by GMPLS protocols that have been modified by the ....etc

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