دانلود مقاله بهبود بازیابی شکست لینک در شبکه حسگر بی سیم نسل بعدی
چکیده
مقدمه
مروری بر مطالعات مرتبط
مدل سیستم
بهبود راه حل های بازیابی شبکه مبتنی بر چرخه p
نتایج و بحث
نتیجه گیری
منابع
Abstract
Introduction
Review of related literature
System model
Improving p-cycle-based network restoration solutions
Results and discussion
Conclusion
References
چکیده
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توجه! این متن ترجمه ماشینی بوده و توسط مترجمین ای ترجمه، ترجمه نشده است.
Abstract
Next-generation wireless sensor networks (xWSN) have applications in many emerging wireless technologies, such as fifth-generation, internet-of-things, device-to-device communications, e-health, e-agriculture, etc. For most of these xWSN applications, network reliability and robustness against failures are crucial considerations. In this paper, an appropriate network restoration model is developed to help achieve network protection and/or restoration for xWSN in the event of link failures. In the model, effective network restoration is achieved by investigating efficient pre-configured-cycle (p-cycle)-based restoration solutions for the xWSN. Furthermore, to achieve significant improvement in the capacity efficiency of the p-cycle solutions realised, the concepts of p-cycle selectivity, load redistribution and the use of single p-cycles for double failure restoration are investigated and incorporated in the network restoration design. The restoration model developed, alongside the various improvement concepts incorporated, is shown to achieve better performance in terms of average path length and total capacity cost when compared with similar restoration models for modern wireless communication applications.
Introduction
Emerging next-generation (xG) wireless communication technologies such as fifth-generation (5G) and beyond, internet-of-things (IoT), cognitive radio networks, etc. promise fast speed, high capacity, low latency and impressive reliability, among others [1], [2]. Wireless sensor networks (WSN), despite no longer being a new technology, are also developing modern models and prototypes that are being designed and deployed to help achieve the promises and expectations of xG wireless communication. The new WSN designs for modern applications are referred to as next-generation wireless sensor networks (xWSN) [3]. Alongside other xG technologies, these modern xWSN models and prototypes do have practical applications in smart cities, device-to-device (D2D) communications (such as machine-to-machine and vehicle-to-vehicle communications), e-health, e-agriculture, e-transportation, e-education, and several other modern sensor-dependent xG wireless communication applications.
Conclusion
This paper has developed and investigated an appropriate p-cycle-based network restoration model for xWSN being employed for D2D communications. The p-cycle restoration model is employed because of the important advantages that p-cycles have over most other restoration mechanisms, especially because they provide adequate network restoration at very high speeds and optimal capacity. Further, a number of improvement concepts are advanced for the network restoration model for xWSN applications. The particular improvement concepts investigated are the concepts of p-cycle selectivity, load redistribution, and the use of a single p-cycle to achieve double failure restoration. The improvement in the capacity efficiency realised through the various concepts incorporated makes the restoration model an ideal model for protecting and restoring the xWSN against link failures in practical xWSN applications. It is noted that there could be several external parameters (such as an unexpected increase in network traffic demand) and external events (such as natural disasters) that may influence the probability of the occurrence of failures and the performance of the network restoration solutions that has been explored in this paper. The cases and impacts of such external factors have not been considered in this paper and would be explored in future works.