TY - GEN
T1 - Reactive clock synchronization for wireless sensor networks with asynchronous wakeup scheduling
AU - Lee, Sang Hoon
AU - Nah, Yunmook
AU - Choi, Lynn
N1 - Funding Information:
This work was supported by a Korea University Grant.
Funding Information:
This work was supported by Mid-career Researcher Program through NRF grant funded by the MEST (No. 2010-0011271).
PY - 2010
Y1 - 2010
N2 - Most of the existing clock synchronization algorithms for wireless sensor networks can be viewed as proactive clock synchronization since they require nodes to periodically synchronize their clock to a reference node regardless of whether they use time information or not. However, the proactive approach wastes unnecessary energy and bandwidth when nodes don't use time information for their operations. In this paper, we propose a new clock synchronization scheme called Reactive Clock Synchronization (RCS) that can be carried out on demand. The main idea is that a source node initiates a synchronization process in parallel with a data communication. To propagate clock information only when there is traffic, we embed the synchronization process in a data communication process. The results from detailed simulations confirm that RCS consumes only less than 1 percent of the energy consumption compared to two representative existing algorithms while it improves the clock accuracy by up to 75.8%.
AB - Most of the existing clock synchronization algorithms for wireless sensor networks can be viewed as proactive clock synchronization since they require nodes to periodically synchronize their clock to a reference node regardless of whether they use time information or not. However, the proactive approach wastes unnecessary energy and bandwidth when nodes don't use time information for their operations. In this paper, we propose a new clock synchronization scheme called Reactive Clock Synchronization (RCS) that can be carried out on demand. The main idea is that a source node initiates a synchronization process in parallel with a data communication. To propagate clock information only when there is traffic, we embed the synchronization process in a data communication process. The results from detailed simulations confirm that RCS consumes only less than 1 percent of the energy consumption compared to two representative existing algorithms while it improves the clock accuracy by up to 75.8%.
KW - Clock synchronization
KW - media access control
KW - preamble sampling
KW - wakeup scheduling
KW - wireless sensor network
UR - http://www.scopus.com/inward/record.url?scp=78449277041&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-16256-5_12
DO - 10.1007/978-3-642-16256-5_12
M3 - Conference contribution
AN - SCOPUS:78449277041
SN - 364216255X
SN - 9783642162558
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 107
EP - 118
BT - Software Technologies for Embedded and Ubiquitous Systems - 8th IFIP WG 10.2 International Workshop, SEUS 2010, Proceedings
T2 - 8th IFIP Workshop on Software Technologies for Embedded and Ubiquitous Systems, SEUS 2010
Y2 - 13 October 2010 through 15 October 2010
ER -