نتایج جستجو برای: qos

تعداد نتایج: 18718  

Journal: :amirkabir international journal of electrical & electronics engineering 2015
m. alishahi m. h. yaghmaee g. wu

nowadays, a great portion of researches research and industrial innovation is about the electric vehicles (ev) and also ev supply equipment (evse) that play an important role in this context. evse requires standardization via effective communication protocols. in this paper, we propose to customize the existing internet standard routing protocol for low power and lossy networks (rpl) to facilit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده برق و کامپیوتر 1393

امروزه با توجه به رشد محاسبات سرویسگرا، پاسخگویی به درخواستهای پیچیده کاربران با انتخاب یک سرویس منفرد یا ترکیب چند سرویس منفرد )و یا مرکب( با هم و تولید یک سرویس مرکب انجام میپذیرد. از آنجایی که سرویسهای وب فراوانی عملکررد یکسانی دارند، معیارهای کیفیت خدمات ) qos ( مانند زمان پاسخ و دسترسیپذیری اهمیت فراوانی در متمایز کردن این سرویسها از هم دارند. بنابراین میتوان سرویسهای مناسب را با در نظر...

The rapid advancement in wireless over wired has augmented the need for improving theQuality of Service (QoS) over such wireless links. However, the wireless ad hoc networkshave too low bandwidth, and establishing a QoS in these networks is a difficult issue. So,support of quality of service in ad hoc networks is the topical issue among the networkscience researchers. In this research we are go...

Service level agreement (SLA) is a powerful tool to formalize the negotiation and agreement between the service provider and service seeker with the scope of service quality characteristics, compensations and tariffs. The service quality description is the main part of a SLA which can be characterized by the use of suitable and feasible quality of service (QoS) parameters. Determining suitable ...

Journal: :journal of advances in computer engineering and technology 2015
forouz ghaffarizadeh ahmad khademzadeh

mobile ad hoc networks (manet) are constructed by mobile nodes without access point. since manet has certain constraints, including power shortages, an unstable wireless environment and node mobility, more power-efficient and reliable routing protocols are needed. the olsr protocol is an optimization of the classical link state algorithm. olsr introduces an interesting concept, the multipoint r...

, G. Khojasteh Toussi, M. H. Yaghmae,

Quality of Service (QoS) refers to a set of rules or techniques that help the network administrators use the available network resources optimally to manage the effects of congestion and to treat the applications according to their needs. The differentiated services architecture (DiffServ) allows providing quality of service to users. The major DiffServ premise is that individual flows with sim...

Today there are many techniques for web service compositions. Evaluation of quality parameters has great impact on evaluation of final product. BPEL is one of those techniques that several researches have been done on its evaluation. However, there are few researches on evaluation of QoS in eflow. This research tries to evaluate performance and reliability of eflow and BPEL through mapping them...

Quality of service (QoS) is an important issue in the design and management of web service composition. QoS in web services consists of various non-functional factors, such as execution cost, execution time, availability, successful execution rate, and security. In recent years, the number of available web services has proliferated, and then offered the same services increasingly. The same web ...

The systems in which information and communication technologies and systems engineering concepts are utilized to develop and improve transportation systems of all kinds are called “The Intelligent Transportation Systems (ITS)”. ITS integrates information, communications, computers and other technologies and uses them in the field of transportation to build an integrated system of people, roads ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده مهندسی 1393

امروزه با گسترش شبک? اینترنت و افزایش پیش بینی نشد? تعداد کاربران، فضای آدرس دهی با کمبود مواجه شده است و پروتکل اینترنت فعلی (ipv4) به زودی اشباع خواهد شد و نمی تواند پاسخگوی این مشکل باشد؛ با توجه به این مسئله و نیز نیازهایی همچون افزایش ملاحظات امنیتی، پیکره بندی خودکار، بهبود multicast و ... اینترنت نسل جدید با نام ipv6 پیشنهاد شد. از سوی دیگر با افزایش روزافزون ارتباطات و علاق? کاربران به ...

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