LoWPAN simple fragment Recovery

Document Type Expired Internet-Draft (individual)
Author Pascal Thubert 
Last updated 2008-02-07
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Considering that 6LoWPAN packets can be as large as 2K bytes and that an 802.15.4 frame with security will carry in the order of 80 bytes of effective payload, a packet might end up fragmented into as many as 25 fragments at the 6LoWPAN shim layer. If a single one of those fragments is lost in transmission, all fragments must be resent, further contributing to the congestion that might have caused the initial packet loss. This draft introduces a simple protocol to recover individual fragments between 6LoWPAN endpoints.


Pascal Thubert (pthubert@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)