Time synchronization in ad hoc networks

Ubiquitous computing environments are typically based upon ad hoc networks of mobile computing devices. These devices may be equipped with sensor hardware to sense the physical environment and may be attached to real world artifacts to form so?called smart things. The data sensed by various smart things can then be combined to derive knowledge about the environment, which in turn enables the smart things to "react" intelligently to their environment. For this so?called sensor fusion, temporal relationships (X happened before Y) and real?time issues (X and Y happened within a certain time interval) play an important role. Thus physical time and clock synchronization are crucial in such environments. However, due to the characteristics of sparse ad hoc networks, classical clock synchronization algorithms are not applicable in this setting. We present a time synchronization scheme that is appropriate for sparse ad hoc networks. Keywords time synchronization, clock synchronizati...

• Type: Conference
• Year: 2001
• Where: MOBIHOC
• Authors: Kay Römer
• Keywords: Ad Hoc Networks, Clock Synchronization Algorithms, MOBIHOC 2001, Sparse Ad Hoc, Wireless Networks