Improved MAC Protocol Synchronization Algorithm using Compensating value in Wireless Mesh Networks
Sang-Man Yun, Soon-Sik Lee, Sangwook Lee, Seong-Geun Jeon, Woo‐Jae Lee · The Journal of the Korean Institute of Information and Communication Engineering · 2009
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.