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Publisher DOI: 10.4108/mca.2.5.e5
Title: Route-over forwarding techniques in a 6LoWPAN
Language: English (United States)
Authors: Weigel, Andreas 
Ringwelski, Martin 
Turau, Volker 
Timm-Giel, Andreas  
Keywords: 6LoWPAN;fragmentation;802.15.4;CometOS;forwarding;route-over;wireless sensor networks
Issue Date: 28-Dec-2014
Publisher: ICST
Source: EAI Endorsed Transactions on Mobile Communications and Applications 5 (2): e5 (2014)
Journal or Series Name: EAI endorsed transactions on mobile communications and applications 
Abstract (english): 6LoWPAN plays a major role within the protocol stack for the future Internet of Things. Its fragmentation mechanism enables transport of IPv6 datagrams with the required minimum MTU of 1280 bytes over 802.15.4-based networks. With the goal of a fully standardized WSN protocol stack currently necessitating a route-over approach, i.e., routing at the IP-layer, there are two main choices for any 6LoWPAN implementation with regard to datagram fragmentation: Hop-by-hop assembly or a cross-layered direct mode, which forwards individual 6LoWPAN fragments before the whole datagram has arrived. In addition to these two straightforward approaches, we propose enhancements based on adaptive rate-restriction for the direct forwarding and a retry control for both modes to reduce the number of losses of larger datagrams. An evaluation of these modes in a simulation environment and a hardware testbed indicate that the proposed enhancements can considerably improve PRR and latency within 6LoWPAN networks.
DOI: 10.15480/882.1700
ISSN: 2032-9504
Institute: Kommunikationsnetze E-4 
Telematik E-17 
Type: (wissenschaftlicher) Artikel
Appears in Collections:Publications (tub.dok)

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