摘要
认知无线电是无线访问领域出现的新技术,目的在于大幅度提高无线频谱的使用。其基本思想是:次用户(非授权用户)在不干扰主用户(授权用户)的条件下允许使用授权频谱。提出一种新的基于独占模式的认知MAC协议。在该协议中,次用户被划分为若干不重叠的组,每个组使用特定的拍卖算法来对其需要租用的信道进行投标。实验表明,这种新协议能够最大化利用频谱资源,并且保证信道在组间分配的公平性和动态性。
Cognitive radio （CR） which radio spectrum is utilized. is an emerging technology in wireless Its basic idea is that a secondary user access, aiming at vastly improving the way in （unlicensed user） can be permitted to use licensed spectrum,provided that it does not interfere with any primary users （licensed users）. This paper proposed a novel cognitive MAC protocol under the property-rights model, in which, secondary users are divided into several non-overlapping groups, and each group uses the proposed auction algorithm to bid for leasing the required channels. Simulations indicate that proposed MAC protocol utilizes spectrum resources to the maximum, guarantees the fairness and dynamics of channels allocation among groups.
出处
《计算机科学》
CSCD
北大核心
2010年第7期97-101,共5页
Computer Science
基金
国家自然科学基金(60773199
U0735001)资助
