[wiki:Internal/Mapping/Topologies Back]

= Topology 2: Simple Hotspot AP scenario with a distribution of clients (at different PHY rates) =
== Goal ==
This represents the simplest basic topology comprising a point to point link (either infrastructure AP to client or peer to peer) with a configurable packet error rate for certain packet sizes

[[Image(topo2.png)]]
== Steps ==
In order to achieve this, the following steps are needed
 * The corner node (1,2) is selected as the AP 
 * Select the set of nodes on the grid as required (clients)
 * Disable autorate adaptation in the card
 * Set the PHY rates to fixed rates based on the distribution required by the experimenter

== Scripts ==
The script to run this experiment can be found [http://www.orbit-lab.org/attachment/wiki/Internal/Mapping/Topologies/Topo2/hotspotAP-10nodes.rb here]

== Sample Results ==
We plot the total system throughput using the experiment script provided below. This is compared against the system throughput obtained 
if all the clients in the experiment experienced 54 Mbps links. The results indicate that users at the edge of coverage affect the total system
throughput.

[[Image(APtopology.png)]]