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update tutorial

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This commit is contained in:
Mirko Banchi
2009-04-29 20:55:56 +02:00
parent 16b6cfbe71
commit 1a4b128917
1 changed files with 12 additions and 9 deletions
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21
doc/tutorial/building-topologies.texi
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@@ -856,23 +856,26 @@ wireless medium and can communication and interfere:
phy.SetChannel (channel.Create ());
@end verbatim
Once the PHY helper is configured, we can focus on the MAC layer:
Once the PHY helper is configured, we can focus on the MAC layer. Here we choose to
work with non-Qos MACs so we use a NqosWifiMacHelper object to set MAC parameters.
@verbatim
WifiHelper wifi = WifiHelper::Default ();
wifi.SetRemoteStationManager ("ns3::AarfWifiManager");
NqosWifiMacHelper mac = NqosWifiMacHelper::Default ();
@end verbatim
The @code{SetRemoteStationManager} method tells the helper the type of
rate control algorithm to use. Here, it is asking the helper to use the AARF
algorithm --- details are, of course, available in Doxygen.
Next, we configure the SSID of the infrastructure network we want to setup
and make sure that our stations don't perform active probing:
Next, we configure the type of MAC, the SSID of the infrastructure network we
want to setup and make sure that our stations don't perform active probing:
@verbatim
Ssid ssid = Ssid ("ns-3-ssid");
wifi.SetMac ("ns3::NqstaWifiMac",
mac.SetType ("ns3::NqstaWifiMac",
"Ssid", SsidValue (ssid),
"ActiveProbing", BooleanValue (false));
@end verbatim
@@ -891,22 +894,22 @@ create the wifi devices of these stations:
@verbatim
NetDeviceContainer staDevices;
staDevices = wifi.Install (phy, wifiStaNodes);
staDevices = wifi.Install (phy, mac, wifiStaNodes);
@end verbatim
We have configured Wifi for all of our STA nodes, and now we need to
configure the AP (access point) node. We begin this process by changing
the default @code{Attributes} of the @code{WifiHelper} to reflect the
the default @code{Attributes} of the @code{NqosWifiMacHelper} to reflect the
requirements of the AP.
@verbatim
wifi.SetMac ("ns3::NqapWifiMac",
mac.SetType ("ns3::NqapWifiMac",
"Ssid", SsidValue (ssid),
"BeaconGeneration", BooleanValue (true),
"BeaconInterval", TimeValue (Seconds (2.5)));
@end verbatim
In this case, the @code{WifiHelper} is going to create MAC layers of the
In this case, the @code{NqosWifiMacHelper} is going to create MAC layers of the
``ns3::NqapWifiMac'' (Non-Qos Access Point) type. We set the
``BeaconGeneration'' @code{Attribute} to true and also set an interval between
beacons of 2.5 seconds.
@@ -916,7 +919,7 @@ The next lines create the single AP which shares the same set of PHY-level
@verbatim
NetDeviceContainer apDevices;
apDevices = wifi.Install (phy, wifiApNode);
apDevices = wifi.Install (phy, mac, wifiApNode);
@end verbatim
Now, we are going to add mobility models. We want the STA nodes to be mobile,