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Low-power 6LoWPAN Protocol Design  

Kim, Chang-Hoon (대구대학교)
Kim, Il-Hyu (대구대학교)
Cha, Jung-Woo (대구대학교)
Nam, In-Gil (대구대학교)
Lee, Chae-Wook (대구대학교)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.12, no.4, 2011 , pp. 274-280 More about this Journal
Abstract
Due to their rapid growth and new paradigm applications, wireless sensor networks(WSNs) are morphing into low power personal area networks(LoWPANs), which are envisioned to grow radically. The fragmentation and reassembly of IP data packet is one of the most important function in the 6LoWPAN based communication between Internet and wireless sensor network. However, since the 6LoWPAN data unit size is 102 byte for IPv6 MTU size is 1200 byte, it increases the number of fragmentation and reassembly. In order to reduce the number of fragmentation and reassembly, this paper presents a new scheme that can be applicable to 6LoWPAN. When a fragmented packet header is constructed, we can have more space for data. This is because we use 8-bits routing table ill instead of 16-bits or 54-bits MAC address to decide the destination node. Analysis shows that our design has roughly 7% or 22% less transmission number of fragmented packets, depending on MAC address size(16-bits or 54-bits), compared with the previously proposed scheme in RFC4944. The reduced fragmented packet transmission means a low power consumption since the packet transmission is the very high power function in wireless sensor networks. Therefore the presented fragmented transmission scheme is well suited for low-power wireless sensor networks.
Keywords
Wireless Sensor Networks; 6LoWPAN; Fragmentation; LOAD Routing;
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