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http://dx.doi.org/10.6109/JKIICE.2009.13.10.2218

Improved MAC Protocol Synchronization Algorithm using Compensating value in Wireless Mesh Networks  

Yun, Sang-Man (경상대학교 대학원 정보통신공학과)
Lee, Soon-Sik (경상대학교 대학원 정보통신공학과)
Lee, Sang-Wook (경상대학교 정보통신공학과)
Jeon, Seong-Geun (경상대학교 정보통신공학과)
Lee, Woo-Jae (경상대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.10, 2009 , pp. 2218-2226 More about this Journal
Abstract
TDMA based MAC protocol supporting wireless mesh network has many advantage rather than 802.11 DCF/EDCA protocol based on packet. But TDMA based MAC protocol require new synchronization method because of mobile point oscillator's difference, and distributed environments. This thesis propose synchronization method for TDMA based MAC protocol. It divides MP(Mobile Points) states into 4 types. If MP is in sync mode, it schedules TDMA local start time in time skew interval using beacon. It proposes compensation algorithms to compensate time skew caused by clock drift. This proposal show that general time error and clock drift rate value reduced and get synchronized result.
Keywords
Wireless Mesh Network; Synchronization; MAC Protocol; TDMA;
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  • Reference
1 L. Huang, T. Lai. On the scalability of IEEE 802.11 ad hoc networks. In Proc. ACM MobiHoc 2002, Lausanne, Switzerland, Jun. 2002
2 ED Kaplan. Understanding GPS: Principles and Applications. Artech House, 1996
3 IEEE Std. 802.11. Wireless LAN Media Access Control (MAC) and Physical Layer (PHY) Specification. New York, 1999
4 J. So and N. Vaidya. MTSF: A Timing Synchronization Protocol to Support Synchronous Operations in Multi-Hop Wireless Networks. Technical Report, Oct. 2004. Available from: http://www.crhc.uiuc.edu/ wireless/groupPubs.html
5 W. Zhu. TDMA frame synchronization of mobile stations using a radio clock signal for short range communications. In Proc. IEEE VTC 1994, Stockholm, Jun. 1994
6 J. Elson, L. Girod and D. Estrin. Fine-grained network time synchronization using reference broadcasts. In Proc. 5th symposium on Operating Systems Design and Implementation (OSDI), Dec. 2002