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Opportunistic spectrum sharing in software defined wireless network

ISSN号：1004-4132
期刊名称：《系统工程与电子技术：英文版》
时间：0
分类：TP311.52[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术] TN92[电子电信—通信与信息系统;电子电信—信息与通信工程]
作者机构：[1]Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
相关基金：supported by the National Natural Science Foundation of China（61021001;61133015;61171065）; the National Natural Science Foundation of China（973 Program）（2013CB329001）; the National High Technology Research; Development Program（863 Program）（2013AA010605;2013AA013500）

作者： Mao Yang Yong Li Depeng Jin Li Su Lieguang Zeng[1]

关键词：无线网络, 频谱资源, 软件定义, 共享, 虚拟网络, 分配问题, 人类生活, 物理网络, software-defined network（SDN）,wireless virtualiza-tion,opportunistic spectrum sharing,dynamic programming,graph theory

中文摘要：

Over the past few decades, the world has witnessed a rapid growth in mobile and wireless networks(MWNs) which significantly change human life. However, proliferating mobile demands lead to several intractable challenges that MWN has to face. Software-defined network is expected as a promising way for future network and has captured growing attention. Network virtualization is an essential feature in software-defined wireless network(SDWN), and it brings two new entities, physical networks and virtual networks. Accordingly, efficiently assigning spectrum resource to virtual networks is one of the fundamental problems in SDWN. Directly orienting towards the spectrum resource allocation problem, firstly, the fluctuation features of virtual network requirements in SDWN are researched, and the opportunistic spectrum sharing method is introduced to SDWN. Then, the problem is proved as NP-hardness. After that, a dynamic programming and graph theory based spectrum sharing algorithm is proposed.Simulations demonstrate that the opportunistic spectrum sharing method conspicuously improves the system performance up to around 20%–30% in SDWN, and the proposed algorithm achieves more efficient performance.

英文摘要：

Over the past few decades, the world has witnessed a rapid growth in mobile and wireless networks（MWNs） which significantly change human life. However, proliferating mobile demands lead to several intractable challenges that MWN has to face. Software-defined network is expected as a promising way for future network and has captured growing attention. Network virtualization is an essential feature in software-defined wireless network（SDWN）, and it brings two new entities, physical networks and virtual networks. Accordingly, efficiently assigning spectrum resource to virtual networks is one of the fundamental problems in SDWN. Directly orienting towards the spectrum resource allocation problem, firstly, the fluctuation features of virtual network requirements in SDWN are researched, and the opportunistic spectrum sharing method is introduced to SDWN. Then, the problem is proved as NP-hardness. After that, a dynamic programming and graph theory based spectrum sharing algorithm is proposed.Simulations demonstrate that the opportunistic spectrum sharing method conspicuously improves the system performance up to around 20%–30% in SDWN, and the proposed algorithm achieves more efficient performance.

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