| 认知无线网络中基于业务区分的多信道MAC协议 |
| |
| 引用本文： | 江帆,王本超.认知无线网络中基于业务区分的多信道MAC协议[J].西安建筑科技大学学报(自然科学版),2012(1):141-146. |
| |
| 作者姓名： | 江帆 王本超 |
| |
| 作者单位： | 西安邮电学院通信与信息工程学院;华为技术有限公司 |
| |
| 基金项目： | 国家自然科学基金资助项目(61172071);陕西省自然科学基础基金资助项目(2011JQ8027);陕西省教育厅自然科学基金资助项目(11JK1009) |
| |
| 摘 要： | 为了满足认知无线网络中认知用户的业务服务质量需求,提出了一种基于业务区分的多信道媒体接入协议(SD-MAC).根据授权用户的信道使用模型以及认知用户的业务类型,实时业务采用基于预约的接入机制,而非实时业务则通过采用基于竞争的接入算法实现信道共享.理论分析和仿真结果表明,所提出的MAC协议能够有效提高实时业务的吞吐率,保证较低的接入时延,从而有效地提升系统性能.
|
| 关 键 词： | 认知无线网络 MAC 动态频谱共享 服务质量 |
A service differentiating based MAC for multichannel cognitive radio networks |
| |
| JIANG Fan,WANG Ben-chao.A service differentiating based MAC for multichannel cognitive radio networks[J].Journal of Xi'an University of Architecture & Technology,2012(1):141-146. |
| |
| Authors: | JIANG Fan WANG Ben-chao |
| |
| Affiliation: | 1.School of Communications and Information Engineering,Xi′an University of Posts and Telecommunications, Xi′an 710121,China;2.Huawei Technologies Co.,Ltd.Bantian,Shenzhen 518129,China) |
| |
| Abstract: | A service differentiating based MAC(SD-MAC) protocol is proposed in this paper to meet the secondary user’s requirement of quality of service for multi-channel cognitive radio networks.Specifically,according to channel utilization patterns of primary users as well as QoS requirements of secondary users,real time services reserve the leftover licensed channel for data transmission,while nON-real time service adopts contention based algorithm to compete for channel access.Theoretical analysis and simulations demonstrate the performance benefits in terms of throughput and access delay,which leads to improved system performances. |
| |
| Keywords: | cognitive radio network medium access control dynamic spectrum sharing quality of service(QoS) |
| 本文献已被 CNKI 等数据库收录！ |
|
