Number of transmitted/received packet in the Mac layer

[Rosa Linda]

Hello,

Are the number of dropped/received/ transmitted frames calculated at the Mac layer? if not, could you please tell me where can I find information that is useful in such calculation in ns3.

Thank you.

[Tommaso Pecorella]

It is all in the manual. Feel free to ask for clarifications after you have read it.

T.

[Rosa Linda]

Thank Mr. Tom for your reply.

I found the statistical frame work in the manual very helpful and informative. However, I still need some clarification on how to get the number of transmitted frame at the mac layer.

I wrote the following code but I am still not able to get number of transmitted frame.

Ptr<PacketCounterCalculator> totalTx = CreateObject<PacketCounterCalculator>();
 totalTx->SetKey("wifi-tx-frames");
 
 Ptr<WifiNetDevice> dev = DynamicCast<WifiNetDevice> (m_node->GetDevice(0));
 
 NS_ASSERT (dev != NULL);
 
 PointerValue ptr;

 dev->GetAttribute ("Mac",ptr);
 
 Ptr<AdhocWifiMac> mac = ptr.Get<AdhocWifiMac> ();
 
 NS_ASSERT (mac != NULL);
 
 mac->TraceConnectWithoutContext ("MacTx", MakeCallback(&PacketCounterCalculator::FrameUpdate, totalTx));

Please, is there any example that show how the mac tracecallback  can be used?

Thanks in advance for your cooperation.
 

[Mehmet Ali Ertürk]

You can find a working simulation at simulator source folder examples/wireless/wifi-ap.cc  

28 Ekim 2014 Salı 17:43:44 UTC+2 tarihinde Rosa Linda yazdı:

[Rosa Linda]

Thank you Mr. Erturk for your reply.

The example uses the information in the application layer. I would like to ask if there is another example that show how to get this mac information in the routing protocol.

Thank you.

[Mehmet Ali Ertürk]

List of available trace sources; 

http://www.nsnam.org/docs/release/3.19/doxygen/group___trace_source_list.html

You can attach callback for almost all layers.

 

29 Ekim 2014 Çarşamba 17:06:58 UTC+2 tarihinde Rosa Linda yazdı:

[Rosa Linda]

Thank you Mr.Erturk for your quick reply.

I have  some difficulties to deal with tracecallback from the routing. I tried to follow the example of wifi-ap.cc in the routing and this is the way that I access the mac from the routing then I place the callback. Please correct me if I have it wrong

Ptr<WifiNetDevice> dev = DynamicCast<WifiNetDevice> (m_node->GetDevice(0));
NS_ASSERT (dev != NULL);
PointerValue ptr;

dev->GetAttribute ("Mac",ptr);
Ptr<AdhocWifiMac> mac = ptr.Get<AdhocWifiMac> ();
NS_ASSERT (mac != NULL);
 

mac->TraceConnectWithoutContext ("MacTx", MakeCallback (&ITSRoutingProtocol::DevTxTrace ()));

[Mehmet Ali Ertürk]

You can also add callback using this syntax;  

  Config::Connect ("/NodeList/*/DeviceList/*/Mac/MacTx", MakeCallback (&DevTxTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Mac/MacRx", MakeCallback (&DevRxTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/RxOk", MakeCallback (&PhyRxOkTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/RxError", MakeCallback (&PhyRxErrorTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/Tx", MakeCallback (&PhyTxTrace));

  Config::Connect ("/NodeList/*/DeviceList/*/Phy/State/State", MakeCallback (&PhyStateTrace));

Adding callback to the Mac/MacTx will trigger every tx in this layer, if you want to count transmitted packets you should use Phy/State/Tx and you can extract information   from packet header such as source and the destination addresses of the packets. 

29 Ekim 2014 Çarşamba 19:50:02 UTC+2 tarihinde Rosa Linda yazdı:

[Rosa Linda]

Thank you Mr. Erturk for your cooperation. Your posts were very helpful. I tried the tracecallback and it is working fine and I am working right now on adding the counter.

Thanks again.