Database-Assisted Dynamic Spectrum Access with QoS Guarantees:A Double-Phase Auction Approach  

作　　者：ZHOU Haibo LIU Bo HOU Fen ZHANG Ning GUI Lin CHEN Jiacheng Xuemin(Sherman) Shen 

机构地区：[1]Shanghai Jiao Tong University [2]University of Waterloo [3]University of Macao

出　　处：《China Communications》2015年第1期66-77,共12页中国通信（英文版）

基　　金：supported in part by Major State Basic Research Development Program of China(973 Program)(No.2009CB320403);National Natural Science Foundation of China(61420106008,61221001, 61201222,61100213);the 111 Project (B07022);China Scholarship Council;Shanghai Key Laboratory of Digital Media Processing and Transmissions;the funds of MIIT of China(Grant No.2011ZX03001-007-03);Research Grant SRG030-FST13-HF from the University of Macao;the NSERC,Canada

摘　　要：Since FCC's opening for white space(WS) utilization,database-assisted dynamic spectrum access(DSA) has become the de facto solution for the realization of dynamic spectrum sharing(DSS),due to its simplicity and compatibility with commercial off-the-shelf(COTS) devices.It is envisioned that such technology will strongly support the prosperous wireless multimedia networking(WMN) applications with satisfying QoS guarantees in the future.However,how to counter the time-frequency variant property when exploiting the WS spectrum for the provision of these services to secondary users(SUs) still remains a great challenge.In such context,a dynamic secondary access scheme for database-assisted spectrum sharing networks is proposed in this paper.In the beginning,the spectrum requirements of SUs for diverse services are modeled by considering the minimum required service data-rate and spectrum access duration.Afterwards,the spectrum demand evaluation and bidding policy are formulated based on the service classes of SUs.Furthermore,a doublephase(DP) spectrum allocation scheme,which consists of the initial resource allocation phase and resource allocation adjustment phase,is carefully designed for DSA.Finally,extensive simulations are conducted and the results demonstrate that our scheme can increase the spectrum trading revenue and adapt to varying service requirements.Since FCC＇s opening for white space （WS） utilization, database-assisted dynamic spectrum access （DSA） has become the de facto solution for the realization of dynamic spectrum sharing （DSS）, due to its simplicity and compatibility with commercial off-the-shelf （COTS） devices. It is envisioned that such technology will strongly support the prosperous wireless multimedia networking （WMN） applications with satisfying QoS guarantees in the future. However, how to counter the time-frequency variant property when exploiting the WS spectrum for the provision of these services to secondary users （SUs） still remains a great challenge. In such context, a dynamic secondary access scheme for database-assisted spectrum sharing networks is proposed in this paper. In the beginning, the spectrum requirements of SUs for diverse services are modeled by considering the minimum required service data-rate and spectrum access duration. Afterwards, the spectrum demand evaluation and bidding policy are formulated based on the service classes of SUs. Furthermore, a doublephase （DP） spectrum allocation scheme, which consists of the initial resource allocation phase and resource allocation adjustment phase, is carefully designed for DSA. Finally, extensive simulations are conducted and the results demonstrate that our scheme can increase the spectrum trading revenue and adapt to varying service requirements.

关 键 词：dynamic spectrum allocation quality of service white-space spectrum secondary access networks 

分 类 号：TN925[电子电信—通信与信息系统]