Table 1 The ECMP key features.
( | Use of a simple ad hoc routing protocol which creates a breadth-first spanning tree rooted at the sink through recursive broadcasting of routing update beacon messages and recording of parents. |
|---|---|
( | The beacon messages are ( |
( | The transmission of the beacon is build around a source marking, progressive propagation to neighbors and rebroadcasting progress which sets up a breadth-first spanning tree rooted at the sink. |
( | The energy-aware routing is integrated into the process by selecting a subset of neigbhors which is sorted by distance and includes only a minimum number of close neighbors. This subset excludes neighbors that largely increase the path set power consumption. |
)
)
) broadcasted at periodic intervals called epochs, (
) propagated progressively to neighbors, and (
) received by a few nodes which are in the vicinity of the source of the beacon message.
)
)