一种基于虚拟公共安全信道的多频率MAC协议  

A Multi-Frequency MAC Protocol based on Virtual Public Security Channel

作　　者：代亚楠[1,2] 张驰[1] 俞能海[1] 

机构地区：[1]中国科学院电磁空间信息重点实验室,中国科学技术大学电子工程与信息科学系,安徽合肥230027 [2]装甲兵学院,安徽蚌埠233050

出　　处：《通信技术》2016年第2期174-181,共8页Communications Technology

基　　金：国家自然科学基金资助项目(No.61371192)~~

摘　　要：常用的多频率MAC协议大多需要至少一条固定不变的公共频率,为了改进这一缺陷,并进一步提升协议的网络吞吐量,提出一种基于虚拟公共安全信道的多频率MAC协议。该协议不需要公共的同步频率,也不需要公共的控制频率,它以公共密钥产生的跳频序列做为虚拟公共安全信道,采用跳频的模式既保证了全局的同步,又保证了各节点安全有效地进行频率分配与接入协商。通过理论分析和仿真实验表明,在节点负载处于较大程度时,所提出的MAC协议依然能够保持很高的网络吞吐量。Most commonly-used muhi-channel MAC protocols usually require at least one fixed public frequency, and for purpose to improve this defect and further enhance the throughput of the protocol, a multi -channel MAC protocol based on virtual public security channel is proposed. This protocol, requiring neither common synchronous frequency nor public control frequency, takes the frequency sequence of the public key as the virtual public security channel, adopts frequency-hopping mode to only ensures global synchronization and that all the nodes could negotiate frequency allocation and access safely and effectively. Theoretical analysis and simulation indicate that the proposed MAC protocol remains valid in maintaining high network throughput when the load is in a fairly large degree.

关 键 词：跳频 虚拟公共安全信道 全局同步 频率协商 吞吐量 

分 类 号：TN915[电子电信—通信与信息系统]