Safe Clock Synchronization Mechanism for Multi-Cluster TTEthernet Networks

被引：0
|
作者：
Tang, Xueqian [1 ]
Li, Qiao [1 ]
Lu, Guangshan [1 ]
Xiong, Huagang [1 ]
机构：
[1] Beihang Univ, Sch Elect & Informat Engn, Beijing, Peoples R China
来源：
2018 10TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS AND SIGNAL PROCESSING (WCSP) | 2018年
基金：
中国国家自然科学基金;
关键词：
IoT; SoS; clock synchronization; multi-cluster; TTEthernet; DESIGN;
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：
The rapid progress in the area of The Internet-of-Things (IoT) promises a new generation of systems and system-of-systems(SoS). Multi-cluster systems with real-time communication networks are gaining increasing importance to meet the communication needs of SoS. To guarantee the required Quality of Service (QoS), SAE AS6802 specified a distributed clock synchronization method for the intra-cluster domain of Time-Triggered Ethernet (TTEthernet) and master-slave paradigm for the inter-cluster domain of multi-cluster TTEthernet. But the detailed clock synchronization operations for the multi-cluster TTEthernet are not presented. This paper proposes a safe clock synchronization mechanism for multi-cluster TTEthernet Networks. The proposed inter-cluster synchronization mechanism is executed to establish a global time base and not disturb clock synchronization mechanism of the infra-cluster domain. Besides, in consideration of the uncertainties derived front the accumulated jitter of time-triggered traffic, a fixed offset is introduced to guarantee a safe inter-cluster time-triggered communication. Moreover, the worst-case precision of the clock synchronization for multi-cluster TTEthernet networks is analyzed and validated by Symbolic Analysis Laboratory(SAL).
引用
收藏
页数：6
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