Bug 2166 – SteadyStateRandomWaypointMobilityModel directs the node to the ground

Bug 2166 - SteadyStateRandomWaypointMobilityModel directs the node to the ground


Summary:	SteadyStateRandomWaypointMobilityModel directs the node to the ground

Status:	RESOLVED FIXED

Product:	ns-3
Classification:	Unclassified
Component:	mobility models
Version:	ns-3-dev
Hardware:	All All

Importance:	P5 major
Assigned To:	ns-bugs

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2015-08-08 07:41 EDT by Tommaso Pecorella
Modified:	2015-08-22 11:10 EDT (History)
CC List:	0 users

See Also:

Attachments
patch (2.06 KB, text/plain) 2015-08-08 07:41 EDT, Tommaso Pecorella	Details
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Description Tommaso Pecorella 2015-08-08 07:41:36 EDT

Created attachment 2114 [details]
patch

SteadyStateRandomWaypointMobilityModel is turning the nodes down. To the ground to be precise.

The culprit is that the node's z position is not considered, and the model is ignoring it when calculating the new point to be reached.
Since the new point is derived from RandomRectanglePositionAllocator (2D model), the Z axis value for the new point is zero.

The alternatives are:
1) use a RandomBoxPositionAllocator (as in the attached patch), or
2) force the z position of the destination point to be the same as the one of the original point.

The bug was reported here by Ziyi He.
https://groups.google.com/forum/#!topic/ns-3-users/Z3I1aajP7RU

Comment 1 Tommaso Pecorella 2015-08-22 11:10:07 EDT

Fixed in changeset:   11612:47c1048095f0