%0 Journal Article
%T Improved Dynamic Spectrum Allocation Mechanism Based on Real-time Spectrum Demand and Offer Mapping<br>一种基于频谱供需实时匹配的改进动态频谱分配机制
%A WANG Fan
%A ZHANG Jian-zhao
%A ZHAO Hang-sheng
%A YAO Fu-qiang
%A FENG Shao-dong
%A <br>王凡
%A 张建照
%A 赵杭生
%A 姚富强
%A 冯少栋
%J 计算机科学
%D 2011
%I 
%X The rapid development of modern wireless communication technology requires more and more spectrum which renders the transaction from static spectrum allocation to dynamic spectrum allocation. Aimed at the question that multiple networks access an coordinated spectrum access spectrum(CSAB) through a central spectrum broker, an improved dynamic spectrum allocation mechanism was proposed based on real-time spectrum demand and offer mapping (RT-DOM). As contrast with general sequential dynamic spectrum allocation(S-DSA) mechanism, the RT-DOM focuses on the spectrum requirement change between two consecutive dynamic periods, and maps the released spectrum (spectrum offer) and the new spectrum demand,in order to make less the spectrum handover than S-DSA And the simirlation results show that the spectrum handover reduces at least 75% while allocation gain reduces very little.
%K Dynamic spectrum allocation
%K Real-time spectrum demand and offer mapping
%K Allocation gain
%K Spectrum handover efficiency<br>动态频谱分配，频谱供需实时匹配，分配增益，频谱切换有效率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=D5E07B47B1F5CF58BD4AB380FF0D422F&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=E158A972A605785F&sid=228A710F49B6CE58&eid=9C65ADEB5990B252&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=0