Volume 10, Issue 3, May 2019

Comparative Study of WAN Services and Technologies in Enterprise Business Networks
Pages: 1-9 (9) | [Full Text] PDF (686K)
Muhammad Shoaib Mazhar
Computer Science & Engineering Department, University of Engineering & Technology, Lahore, Pakistan

Abstract - An enterprise business network develops to incorporate more branch offices, internet business administrations, or worldwide operations, a small network like office LAN is never again adequate. It is impossible to handle requirements by LAN. This issue has made WAN an integral part of the enterprises because WAN offers various technologies and services to meet the requirements of the network. Geographically, WAN covers more area than other networks which arises problems of security and management. Purpose of this paper is to explore all major choices for structuring enterprise WAN. How a local business evolves to enterprise business? How evolving business affect network requirements and also provide general enterprise architecture. This paper provides basic knowledge of selecting the appropriate WAN services, technologies and suitable protocols for these technologies to meet the changing business requirements to enable integrated WAN services over a multi-area enterprise network.
 Index Terms - LAN, WAN, MAN, UET, ATM and MPLS
Medical Image Application by Hybrid Transform Coding Scheme
Pages: 10-16 (7) | [Full Text] PDF (537K)
Hawbir Mhamad, Raza Ahmad
Kscien Organization, Hamdi Street, Sulaimany, Iraq

Abstract - Efficient compression of images using hybrid schemes has become the spotlight for developers in recent times. Hybrid compression techniques (DWT and DCT) are the basis of the proposed compression scheme presented in this paper. The aim here is to achieve higher compression threshold while maintaining the quality of the reconstructed image, attempting to achieve this by using different compression levels on wavelet coefficients of the DWT (HH and LL) bands, in the time when (HL and LH) bands are undergoing DCT transform. According to the type of transformation, adaptive quantization of the retained coefficient is performed. Lastly the quantization indices are encoded using entropy coding (variable shift coding). Results of our trails indicate using hybrid DWT-DCT algorithm significantly improves coding performance.
 Index Terms - Medical Image, Application, Hybrid and Performance
Telecommunication Networks Architecture to Control Data Flow for Next Generation Internet: A Survey
Pages: 17-24 (8) | [Full Text] PDF (343K)
Shahzaib Zahid and M. J. Arshad
Department of Computer Science and Engineering, University of Engineering and Technology, Lahore, Pakistan

Abstract - This paper shows a DC-driven design of telecommunication systems for Internet of new generation. Information stream turns into the real traffic in existing media transmission systems. Conventional PC systems and telecom systems address numerous difficulties in high quality administration, advancement, development, and executives. In light of the examination of existing and standard telecommunication frameworks challenges, a DC driven telecom interfaces with part the data plane from the control plane is presented. It is a comprehensively passed on server ranch mastermind (data center network), which is made out of many open or private data centers (DCs). Every DC does not just anticipate the fundamental work of limit and enlisting, yet additionally is a system focus purpose of data collection, trading, and coordinating. The study shows that SDN is the solution for the DC-centric telecom networks which implemets software based data handling rules, which is better than embedding them in hardware.
 Index Terms - Data Center (DC), Internet of Things (IoT), Over-the-top (OTT), Service function changing (SFC), Information Technology (IT), Software-Defined Networking (SDN), Virtual Machine (VM), Composite Disaggregated Infrastructure (CDI) and Software-Defined Infrastructure (SDI)
Improve the Performance of the LLREF Algorithm to Schedule Tasks in Real Time Systems
Pages: 25-30 (6) | [Full Text] PDF (426K)
Khaldon Faqi, Mohammed Hijazieh
Department of Computer and Control Engineering, University of Tishreen, Latakia, Syria

Abstract - Real-time systems are one of the most widely used scientific and technical fields because of their widespread use in many control, communication and information systems. Task scheduling in real-time systems is a sensitive subject that attracts researchers' attention to develop real-time systems performance and overcoming problems and challenges. Many scheduling algorithms were developed by researchers in this field, which varied in their performance and mode of operation and the method of assigning priorities to tasks of different types such as periodic, sporadic or aperiodic tasks in addition to the type of workstation platform that used and their properties such as the number of cores and the size of memory Cache and the number of its levels. Some of these algorithms are event-driven, others are time-slice driven, and some of them provide optimal scheduling performance, especially when working on a multi-processor platform or a single processor. In this research, one of the optimal scheduling algorithms for the multi-core processor was selected. The idea of improving the algorithm's performance is to assign priorities to tasks with a lower execution time first when the latency of tasks which is equal to the difference between execution time and according deadline, which produces delay reduction that arisen from scheduling overhead and context switching overhead that yields to improve the whole algorithm performance.
 Index Terms - Scheduling, Sporadic, Aperiodic, Periodic Tasks and Multicore
Comparative Analysis of Messaging Protocols used in IoT for M2M Communication
Pages: 31-40 (10) | [Full Text] PDF (426K)
Mughees Ahmed and Junaid Arshad
Department of Computer Science and Engineering, University of Engineering and Technology, Lahore

Abstract - IoT applications requires real-time communication either with things or humans as an integral part. Real-time communication is very basic service provided by IoT applications. Due to its diverse nature in application and implementation, choice of effective standard and protocol for messaging is a challenging task. Depending upon the use cases and deployment requirements, many standards and protocols for real-time messaging have been developed by IEEE, IETF and ITU since the evolution of IoT. As, no single protocol can fulfill all requirements of all IoT applications scenario so various messaging protocols have been developed by keeping different applications in view. Selection of suitable messaging protocol for real-time communication is always and ongoing dilemma, so it is important to understand features or key parameters of the different real-time messaging protocols. In this paper, we review four real-time communication protocols namely HTTP, MQTT, AMQP and CoAP. Comparison has been made by keeping certain parameters in mind which a user or developer might be interested while choosing a best-fit protocols for his IoT application.
 Index Terms - IoT Systems, Real time Communication, Messaging Protocols and Standards, M2M Communication, QoS, Interoperability, HTTP, MQTT, AMQP and CoAP

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