A Distributed Routing and Time-slot Assignment Algorithm for Cognitive Radio Ad Hoc Networks with Primary-User Protection

被引:0
作者
Chen, Hao [1 ]
Ren, Pinyi [1 ]
Sun, Li [1 ]
Du, Qinghe [1 ]
机构
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China
来源
2012 7TH INTERNATIONAL ICST CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA (CHINACOM) | 2012年
关键词
Cognitive Radio; Distributed Routing; Time-slot Assignment; Primary-user Protection; PROTOCOL;
D O I
暂无
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Cognitive Radio (CR) technology enables Secondary Users (SUs) to transparently utilize the licensed spectrum bands while causing limited interference to Primary Users (PUs). In this paper, a distributed routing and time-slot assignment (DRTSA) algorithm is proposed to address the PU protection issue. Specifically, we first design a proper routing metric for distributed path selection and then we propose a time-slot assignment algorithm to improve SUs' capacity and reduce the interference to PU as well. Theoretical analysis shows that the complexity of DRTSA is no more than O(NTlogN), where N and T denote the number of nodes and the time-slot period in the network respectively. Simulation results show that, under various network scenarios, the performance of the proposed distributed algorithm can approach that of the centralized alternatives.
引用
收藏
页码:470 / 474
页数:5
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