Protecting Clock Synchronization: Adversary Detection through Network Monitoring

Protecting Clock Synchronization: Adversary Detection through Network Monitoring

Today, industrial networks are often used for safetycritical applications with real-time requirements. The architecture of such applications usually has a time-triggered nature that has message scheduling as a core property. Real-time scheduling can be applied only in networks where nodes share the same notion of time, i.e., they are synchronized. Therefore, clock synchronization is one of the ...

Clock Synchronization through Handshake Signalling

We present a method for synchronizing pausible clocks in GALS (Globally Asynchronous, Locally Synchronous) systems. In contrast to most conventional GALS schemes the method is not based on including in each ring oscillator a synchronizing element (such as for instance an arbiter) which on one side can pause the clock and on the other side offers a handshake interface. Instead, we propose a sche...

Experiments in network clock synchronization

Status of this Memo This RFC discusses some experiments in clock synchronization in the ARPA-Internet community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.

Network Time Synchronization Using Clock Offset Optimization

Fast distributed smoothing for network clock synchronization

We consider the problem of estimating node variables from noisy relative measurements in a wireless network. In previous work, a distributed smoothing scheme was developed based on the Jacobi algorithm for obtaining leastsquares (LS) estimates. Although the synchronous version of the algorithm was shown to converge exponentially to the optimal estimate, an analysis of the asynchronous scheme is...