An overview of clock synchronization
Fault-tolerant distributed computing
Interval-based Clock Synchronization
Real-Time Systems - Special issue on global time in large scale distributed real-time systems, part II
Proceedings of the 7th annual international conference on Mobile computing and networking
Time synchronization in ad hoc networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Static optimality and dynamic search-optimality in lists and trees
SODA '02 Proceedings of the thirteenth annual ACM-SIAM symposium on Discrete algorithms
Maintaining the time in a distributed system
PODC '83 Proceedings of the second annual ACM symposium on Principles of distributed computing
Fine-grained network time synchronization using reference broadcasts
ACM SIGOPS Operating Systems Review - OSDI '02: Proceedings of the 5th symposium on Operating systems design and implementation
Clock synchronization for wireless local area networks
Euromicro-RTS'00 Proceedings of the 12th Euromicro conference on Real-time systems
A resource--efficient time estimation for wireless sensor networks
Proceedings of the 2004 joint workshop on Foundations of mobile computing
Wireless ad hoc lattice computers (WAdL)
Journal of Parallel and Distributed Computing - Special issue: Algorithms for wireless and ad-hoc networks
Lowering radio duty cycle through temperature compensated timing
Proceedings of the 4th international conference on Embedded networked sensor systems
A survey on wireless multimedia sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Tiny-sync: Tight time synchronization for wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Multiband Media Access Control in Impulse-Based UWB Ad Hoc Networks
IEEE Transactions on Mobile Computing
Information fusion for wireless sensor networks: Methods, models, and classifications
ACM Computing Surveys (CSUR)
Time synchronization methods for wireless sensor networks: A survey
Programming and Computing Software
International Journal of Ad Hoc and Ubiquitous Computing
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Clock synchronization is a crucial basic service in typical sensor networks, since the observations of distributed sensors more often than not need to be ordered ("a happened before b") or otherwise related ("a and b happened within a time window of size x") in time. Ad-hoc networks may exhibit characteristics which make the use of traditional clock-synchronization algorithms infeasible. Recently, algorithms suitable for ad-hoc networks have been presented.We first propose an improvement to an existing algorithm. While needing less computation and no more communication or memory than the original algorithm, our new algorithm always yields equal or better results and thus outperforms the original algorithm. We then examine how even better synchronization can be obtained, possibly at the cost of additional computation, communication, and memory. To this end, we introduce a model for internal synchronization. This model allows us to find an algorithm which makes use of all the data a node can obtain from the network for a given communication pattern and thus provides optimal synchronization in our model.