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RISS 인기검색어
- 검색키워드
- 저자 : Javed Ahmad Shaheen (검색결과 2 건)
- 무료
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Mobile Computing: Wireless Networking Security Issues
Javed Ahmad Shaheen 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.10
Mobile wireless has detonated in popularity just of its simplicity, revolution in communication and Mobile computing has become very famous now days in reward of the services offered during the mobile communication and. Mobile computing has become the reality not the luxury. Mobile wireless market is increasing by leaps and bounds as Cell phones, mobile computing and communication devices have become very trendy because of their ease and portability. However, the use of such devices in this platform is accompanied by new security risks that must be recognized and addressed to protect the physical devices, the communication medium, and the information used. Security is key issue that needs to be considered. For this security protocols are proposed for different applications like Wireless Application Protocol, 802.11a etc. Most of them are based on the public and private key cryptography. The challenge for mobile network is in providing very large footprint of mobile services with high speed and security. In this paper, we have discussed security issues arising due to wireless networking of mobile computing in distributed systems. We discussed the operational model of mobile computing environment, and try to demonstrate proposed solutions. We also discuss security problems and mechanisms that can be applied one of three main components of mobile computing. The goal of paper is to point out some of the limitations, characteristics, applications and issues on security of mobile computing.
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Architecture of Task Manager for Real Time OS Explaining Real Time Operating Systems Issues
Javed Ahmad Shaheen MSCS 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.9
Complications of embedded applications are increasing. Within due time delivery to the market is also a pressure. So, the demand and use of real time operating systems is also increasing. However, it is an redundant fact that the Real Time Operating System (Real Time OS) can significantly degrade the performance. To face performance degradation, a Real-Time Task Manger (RTTM) has been presented in this paper. The Real-Time Task Manger is a hardware based extension to the processor that decreases performance bottleneck attributed to Real Time Operating System. Real-Time Task Manger decreases these performance bottlenecks introduced by Real Time Operating System by its hardware based architecture. The architecture of Real-Time Task Manger is being discussed in this paper provides an aid to deal with some common operations of Real Time Operating System that reason the performance degradation. For example event management, time management, and task scheduling. These operations have a property of some inborn parallelism. The Real-Time Task Manger uses this property to complete these operations in a constant time, and as a result, minimizes the overhead introduced by Real Time Operating System. The proposed architecture yields two benefits: It reduces the processor time taken by Real Time Operating System, and improves the response time to a considerable amount.
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