移動(dòng)云計(jì)算中基于SLA的動(dòng)態(tài)帶寬分配方法研究與實(shí)現(xiàn)
[Abstract]:Cloud computing (Cloud Computing), as a new computing mode which can access the pool of shared resources anytime and anywhere, has been paid more and more attention. With the continuous development of cloud computing and mobile Internet, cloud computing services supporting smart devices such as Android and IOS have emerged. Mobile cloud computing technology has emerged as the times require and has become a new research hotspot in academia. At present, most of cloud computing research is based on computing power, memory CPU utilization and other parameters to allocate resources to improve resource utilization. However, with the emergence of mobile cloud computing, network bandwidth gradually becomes an important factor affecting the development of mobile cloud computing technology, and plays an important role in resource sharing of data center network. At the same time, with the increasing demand for bandwidth by mobile end users, the performance of mobile cloud central servers will be greatly reduced when multiple mobile terminal users simultaneously send requests. Based on the analysis and summary of the related technologies of mobile cloud computing and SLA, this paper proposes a dynamic bandwidth allocation method based on SLA, aiming at the dynamic and diversity of bandwidth requirements of different end users in mobile cloud computing. The method matches the request bandwidth of mobile terminal user with the negotiated bandwidth allocation interval defined by SLA, and maps the mobile terminal bandwidth according to the matching result to make dynamic bandwidth allocation for mobile terminal users of different levels. The main work of this paper is as follows: (1) A dynamic bandwidth allocation method for mobile cloud computing is proposed. The method uses hierarchical mapping and bandwidth reservation to divide the bandwidth reserved by cloud computing center into three levels: Hum M and L, and then according to whether the reserved bandwidth resources of each level satisfy the bandwidth request of the mobile terminal user. Dynamic bandwidth allocation in mobile cloud center is realized. (2) A dynamic bandwidth allocation framework based on SLA is proposed. In this framework, two modules, similarity matching and dynamic bandwidth allocation, are implemented by WSLA language. The similarity matching algorithm is based on the similarity matching algorithm between the bandwidth request of mobile terminal user and the bandwidth allocation interval negotiated by SLA. The matching result is calculated and the rank mapping is carried out. The dynamic bandwidth allocation module performs dynamic bandwidth allocation for different mobile end users according to the hierarchical mapping results. (3) the dynamic bandwidth allocation prototype system based on SLA in mobile cloud computing is implemented by cloud computing simulation simulator CloudSim. The experimental results show that the proposed dynamic bandwidth allocation method based on SLA in mobile cloud computing can improve bandwidth resource utilization and system throughput to a certain extent, reduce delay and ensure quality of service (QoS).
【學(xué)位授予單位】:江蘇大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:TP393.09
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