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Added comments in mesh.cc

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This commit is contained in:
Kirill Andreev
2009-09-10 14:13:48 +04:00
parent 61ac2171bd
commit 5cccb40d46
1 changed files with 50 additions and 13 deletions
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63
examples/mesh.cc
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@@ -16,6 +16,31 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Kirill Andreev <andreev@iitp.ru>
*
*
* By default this script creates m_xSize * m_ySize square grid topology with
* IEEE802.11s stack installed at each node with peering management
* and HWMP protocol.
* The side of the square cell is defined by m_step parameter.
* When topology is created, UDP ping is installed to opposite corners
* by diagonals. packet size of the UDP ping and interval between two
* successive packets is configurable.
*
* m_xSize * step
* |<--------->|
* step
* |<--->|
* * --- * --- * <---Ping sink _
* | \ | / | ^
* | \ | / | |
* * --- * --- * m_ySize * step |
* | / | \ | |
* | / | \ | |
* * --- * --- * _
* ^ Ping source
*
* See also MeshTest::Configure to read more about configurable
* parameters.
*/
@@ -97,16 +122,20 @@ MeshTest::Configure (int argc, char *argv[])
CommandLine cmd;
cmd.AddValue ("x-size", "Number of nodes in a row grid. [6]", m_xSize);
cmd.AddValue ("y-size", "Number of rows in a grid. [6]", m_ySize);
cmd.AddValue ("m_step", "Size of edge in our grid, meters. [100 m]", m_step);
cmd.AddValue ("step", "Size of edge in our grid, meters. [100 m]", m_step);
/*
* As soon as starting node means that it sends a beacon,
* simultaneous start is not good.
*/
cmd.AddValue ("start", "Maximum random start delay, seconds. [0.1 s]", m_randomStart);
cmd.AddValue ("time", "Simulation time, seconds [100 s]", m_totalTime);
cmd.AddValue ("packet-interval", "Interval between packets, seconds [0.001 s]", m_packetInterval);
cmd.AddValue ("packet-size", "Size of packets", m_packetSize);
cmd.AddValue ("packet-interval", "Interval between packets in UDP ping, seconds [0.001 s]", m_packetInterval);
cmd.AddValue ("packet-size", "Size of packets in UDP ping", m_packetSize);
cmd.AddValue ("interfaces", "Number of radio interfaces used by each mesh point. [1]", m_nIfaces);
cmd.AddValue ("m_channels", "Use different frequency m_channels for different interfaces. [0]", m_chan);
cmd.AddValue ("m_pcap", "Enable PCAP traces on interfaces. [0]", m_pcap);
cmd.AddValue ("m_stack", "Type of protocol m_stack. ns3::Dot11sStack by default", m_stack);
cmd.AddValue ("m_root", "Mac address of m_root mesh point", m_root);
cmd.AddValue ("channels", "Use different frequency channels for different interfaces. [0]", m_chan);
cmd.AddValue ("pcap", "Enable PCAP traces on interfaces. [0]", m_pcap);
cmd.AddValue ("stack", "Type of protocol stack. ns3::Dot11sStack by default", m_stack);
cmd.AddValue ("root", "Mac address of root mesh point in HWMP", m_root);
cmd.Parse (argc, argv);
NS_LOG_DEBUG ("Grid:" << m_xSize << "*" << m_ySize);
@@ -115,13 +144,20 @@ MeshTest::Configure (int argc, char *argv[])
void
MeshTest::CreateNodes ()
{
/*
* Create m_ySize*m_xSize stations to form a grid topology
*/
nodes.Create (m_ySize*m_xSize);
// Setting m_channel
// Configure YansWifiChannel
YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();
YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();
wifiPhy.SetChannel (wifiChannel.Create ());
/*
* Create mesh helper and set stack installer to it
* Stack installer creates all needed protocols and install them to
* mesh point device
*/
mesh = MeshHelper::Default ();
// Install mesh point devices & protocols
mesh.SetStackInstaller (m_stack, "Root", Mac48AddressValue (Mac48Address (m_root.c_str ())));
if (m_chan)
{
@@ -131,11 +167,12 @@ MeshTest::CreateNodes ()
{
mesh.SetSpreadInterfaceChannels (MeshHelper::ZERO_CHANNEL);
}
//MeshInterfaceHelper interface = MeshInterfaceHelper::Default ();
mesh.SetMacType ("RandomStart", TimeValue (Seconds(m_randomStart)));
// Set number of interfaces - default is single-interface mesh point
mesh.SetNumberOfInterfaces (m_nIfaces);
// Install protocols and return container if MeshPointDevices
meshDevices = mesh.Install (wifiPhy, nodes);
// Setup mobility
// Setup mobility - static grid topology
MobilityHelper mobility;
mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
"MinX", DoubleValue (0.0),
@@ -152,8 +189,8 @@ MeshTest::CreateNodes ()
void
MeshTest::InstallInternetStack ()
{
InternetStackHelper m_stack;
m_stack.Install (nodes);
InternetStackHelper internetStack;
internetStack.Install (nodes);
Ipv4AddressHelper address;
address.SetBase ("10.1.1.0", "255.255.255.0");
interfaces = address.Assign (meshDevices);