A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : The ETX Objective Function for RPL
Author(s) : O. Gnawali, P. Levis
Filename : draft-gnawali-roll-etxof-00.txt
Pages : 7
Date : 2010-02-22
The ETX metric of a wireless link is the expected number of
transmissions required to successfully transmit and acknowledge a
packet on the link. The Routing Protocol for Low Power and Lossy
Networks (RPL) allows the use of objective functions to construct
routes that optimize or constrain a routing metric on the paths.
This specification describes ETXOF, an objective function that
minimizes ETX. The RPL path computation using ETXOF results in
minimum-ETX paths from the nodes to the DAG roots, i.e., paths that
minimize the number of packet transmissions for packet delivery from
nodes in the network to the DAG root.
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