摘要
为了对抗衰落,提高传输的可靠性,从而提高网络吞吐量,提出了一种用于提高水下通信可靠性的协作多址接入层(MAC)协议.该协议利用物理层的信噪比信息,设计协作竞争机制、协作节点参与及调度机制.该机制既保证了网络在恶劣信道环境下的可靠通信,又能避免良好信道环境下的协作资源过度消耗.仿真实验分析了提高水下通信可靠性的协作MAC(URC-MAC)的实际性能随设计参数值的变化趋势,并与基于时隙的实地捕获多址接入协议(SFAMA)进行了比较.结果表明:URC-MAC能提高网络的吞吐量.
In order to combat fading and improve the reliability of transmission ,and to improve the network throughput ,an underwater reliability improved cooperation MAC （media access control） pro‐tocol （URC‐MAC） was proposed .Based on the signal to noise ratio information of physical layer ,the cooperation competition mechanism and collaboration node involvement and scheduling mechanism were proposed in the protocol .This protocol not only ensured reliable communication in severe chan‐nel ,but also avoided the excessive consumption of cooperation resources in good channel .The simula‐tion analyzed the performance of URC‐MAC as the designed parameter values changed and compared it with slotted floor acquisition multiple access protocol （SFAMA） .The results show that URC‐MAC can improve the throughput of networks .
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第9期73-78,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61162003)
海南省应用技术研发与适用推广专项基金资助项目(ZDXM2014086)
青海省科技计划资助项目(2012-ZR-2989)
关键词
水声通信
多址接入层
协作通信
信噪比
可靠性
吞吐量
underwater acoustic communication
MAC （media access control）
cooperative communication
signal to noise ratio
reliability
throughput
