Index: src/simple-wireless-tdma/test/tdma-test.cc |
=================================================================== |
new file mode 100755 |
--- /dev/null |
+++ b/src/simple-wireless-tdma/test/tdma-test.cc |
@@ -0,0 +1,226 @@ |
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
+/* |
+ * Copyright (c) 2011 Hemanth Narra |
+ * |
+ * This program is free software; you can redistribute it and/or modify |
+ * it under the terms of the GNU General Public License version 2 as |
+ * published by the Free Software Foundation; |
+ * |
+ * This program is distributed in the hope that it will be useful, |
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
+ * GNU General Public License for more details. |
+ * |
+ * You should have received a copy of the GNU General Public License |
+ * along with this program; if not, write to the Free Software |
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
+ * |
+ * Author: Hemanth Narra <hemanthnarra222@gmail.com> |
+ * |
+ * James P.G. Sterbenz <jpgs@ittc.ku.edu>, director |
+ * ResiliNets Research Group http://wiki.ittc.ku.edu/resilinets |
+ * Information and Telecommunication Technology Center (ITTC) |
+ * and Department of Electrical Engineering and Computer Science |
+ * The University of Kansas Lawrence, KS USA. |
+ * |
+ * Work supported in part by NSF FIND (Future Internet Design) Program |
+ * under grant CNS-0626918 (Postmodern Internet Architecture), |
+ * NSF grant CNS-1050226 (Multilayer Network Resilience Analysis and Experimentation on GENI), |
+ * US Department of Defense (DoD), and ITTC at The University of Kansas. |
+ */ |
+#include "ns3/test.h" |
+#include "ns3/simulator.h" |
+#include "ns3/random-variable.h" |
+#include "ns3/tdma-helper.h" |
+#include "ns3/double.h" |
+#include "ns3/uinteger.h" |
+#include "ns3/string.h" |
+#include "ns3/boolean.h" |
+#include "ns3/tdma-controller.h" |
+#include "ns3/tdma-central-mac.h" |
+#include "ns3/tdma-mac.h" |
+#include "ns3/simple-wireless-channel.h" |
+#include "ns3/names.h" |
+#include "ns3/callback.h" |
+#include "ns3/config.h" |
+#include "ns3/node-container.h" |
+#include "ns3/mobility-helper.h" |
+ |
+namespace ns3 { |
+class TdmaSlotAllocationTestCase : public TestCase |
+{ |
+public: |
+ TdmaSlotAllocationTestCase (); |
+ ~TdmaSlotAllocationTestCase (); |
+ virtual void DoRun (void); |
+ void MacTxTrace (Ptr<Packet> packet, const WifiMacHeader *hdr); |
+ void CreateNodes (); |
+private: |
+ NodeContainer * m_nodes; |
+ std::vector<Ptr<Packet> > m_packets; |
+}; |
+ |
+TdmaSlotAllocationTestCase::TdmaSlotAllocationTestCase (void) |
+ : TestCase ("Tdma slot allocation test case"), |
+ m_nodes (0) |
+{ |
+} |
+TdmaSlotAllocationTestCase::~TdmaSlotAllocationTestCase () |
+{ |
+ delete m_nodes; |
+ m_packets.clear (); |
+} |
+void |
+TdmaSlotAllocationTestCase::DoRun () |
+{ |
+ // set the tx range of a node |
+ Config::SetDefault ("ns3::SimpleWirelessChannel::MaxRange", DoubleValue (303)); |
+ /** |
+ * CreateNodes and assign mobility models; |
+ * **required by simple-wireless-channel to identify distance between them** |
+ */ |
+ CreateNodes (); |
+ Ptr<TdmaController> tdmaController = CreateObject<TdmaController> (); |
+ tdmaController->SetSlotTime (MicroSeconds (1100)); |
+ tdmaController->SetGaurdTime (MicroSeconds (100)); |
+ tdmaController->SetInterFrameTimeInterval (MicroSeconds (200)); |
+ tdmaController->SetTotalSlotsAllowed (3); |
+ Ptr<SimpleWirelessChannel> channel = CreateObject<SimpleWirelessChannel> (); |
+ |
+ //create and initialize node1 |
+ Ptr<TdmaNetDevice> device1 = CreateObject<TdmaNetDevice> (); |
+ device1->SetNode (m_nodes->Get (0)); |
+ Ptr<TdmaCentralMac> mac1 = CreateObject<TdmaCentralMac> (); |
+ mac1->SetAddress (Mac48Address::Allocate ()); |
+ device1->SetMac (mac1); |
+ device1->SetTdmaController (tdmaController); |
+ device1->SetChannel (channel); |
+ mac1->GetTdmaMacLow ()->SetRxCallback (MakeCallback (&TdmaSlotAllocationTestCase::MacTxTrace, this)); |
+ |
+ Ptr<TdmaNetDevice> device2 = CreateObject<TdmaNetDevice> (); |
+ device2->SetNode (m_nodes->Get (1)); |
+ Ptr<TdmaCentralMac> mac2 = CreateObject<TdmaCentralMac> (); |
+ mac2->SetAddress (Mac48Address::Allocate ()); |
+ device2->SetMac (mac2); |
+ device2->SetTdmaController (tdmaController); |
+ device2->SetChannel (channel); |
+ mac2->GetTdmaMacLow ()->SetRxCallback (MakeCallback (&TdmaSlotAllocationTestCase::MacTxTrace, this)); |
+ |
+ //creating and enqueueing packets to the macs |
+ uint32_t pktSize = 1420; |
+ for (int it = 0; it < 4; it++) |
+ { |
+ Ptr<Packet> pkt = Create<Packet> (pktSize); |
+ m_packets.push_back (pkt); |
+ pktSize -= 11; |
+ if (it > 1) |
+ { |
+ mac2->Enqueue (pkt,mac1->GetAddress ()); |
+ } |
+ else |
+ { |
+ mac1->Enqueue (pkt,mac2->GetAddress ()); |
+ } |
+ } |
+ |
+ // setting slots in the TdmaController |
+ tdmaController->AddTdmaSlot (0,mac1); |
+ tdmaController->AddTdmaSlot (1,mac1); |
+ tdmaController->AddTdmaSlot (2,mac2); |
+ tdmaController->StartTdmaSessions (); |
+ |
+ Simulator::Stop (MilliSeconds (8)); |
+ Simulator::Run (); |
+ Simulator::Destroy (); |
+ device1->Dispose (); |
+ device2->Dispose (); |
+} |
+ |
+void |
+TdmaSlotAllocationTestCase::CreateNodes () |
+{ |
+ m_nodes = new NodeContainer; |
+ m_nodes->Create (2); |
+ MobilityHelper mobility; |
+ mobility.SetPositionAllocator ("ns3::GridPositionAllocator", |
+ "MinX", DoubleValue (0.0), |
+ "MinY", DoubleValue (0.0), |
+ "DeltaX", DoubleValue (303), |
+ "DeltaY", DoubleValue (0), |
+ "GridWidth", UintegerValue (2), |
+ "LayoutType", StringValue ("RowFirst")); |
+ mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel"); |
+ mobility.Install (*m_nodes); |
+} |
+ |
+/** |
+ * packet Tx times from source: |
+ * 1420 bytes: 1419*8/11000000 = 0.001032 us |
+ * 1409 bytes: 1408*8/11000000 = 0.001024 us |
+ * 1398 bytes: 1397*8/11000000 = 0.001016 us |
+ * 1387 bytes: 1386*8/11000000 = 0.001008 us |
+ * |
+ * time taken by simple-wireless-channel to move them over the medium |
+ * 303*3.3*10^(-9) = 1us |
+ * node 1 is allotted 2 slots and node 0 is allotted 1 slot |
+ * so tx start and transmission slot times for node 0 and node 1 are as follows |
+ * Also, GaurdTime is 100 us; so we should add 100 us after every tx slot. |
+ * tx start transmission slot |
+ * node 0: 0 us 2200 us (2*1100) |
+ * node 1: 2300 us 1100 us (1*1100) |
+ * |
+ * InterframeTime is set as 200 us, thus the next slot times for the nodes are |
+ * tx start transmission slot |
+ * node 0: 3700 us 2200 us (2*1100) |
+ * node 1: 6000 us 1100 us (1*1100) |
+ * |
+ * so transmit and arrival times of each packet are as follows |
+ * tx time arrival time |
+ * pkt0: 0 us 1033 us (0+1032+1) |
+ * pkt1: 1033 us 2058 us (1033+1024+1) |
+ * pkt2: 2300 us 3317 us (2300+1016+1) |
+ * pkt3: 6000 us 7009 us (6000+1008+1) |
+ * |
+ */ |
+void |
+TdmaSlotAllocationTestCase::MacTxTrace (Ptr<Packet> packet, const WifiMacHeader *hdr) |
+{ |
+ Time now = Simulator::Now (); |
+ //validation of received packets based on their sizes |
+ if (packet->GetSize () == m_packets.at (0)->GetSize ()) |
+ { |
+ // pkt0 |
+ NS_TEST_ASSERT_MSG_EQ (now.GetMicroSeconds (),1033,"XXX"); |
Tom Henderson
2011/08/16 05:39:49
suggest not using XXX; either "" or a real string.
|
+ |
+ } |
+ else if (packet->GetSize () == m_packets.at (1)->GetSize ()) |
+ { |
+ // pkt1 |
+ NS_TEST_ASSERT_MSG_EQ (now.GetMicroSeconds (),2058,"XXX"); |
+ } |
+ else if (packet->GetSize () == m_packets.at (2)->GetSize ()) |
+ { |
+ // pkt2 |
+ NS_TEST_ASSERT_MSG_EQ (now.GetMicroSeconds (),3317,"XXX"); |
+ } |
+ else if (packet->GetSize () == m_packets.at (3)->GetSize ()) |
+ { |
+ // pkt3 |
+ NS_TEST_ASSERT_MSG_EQ (now.GetMicroSeconds (),7009,"XXX"); |
+ } |
+ else |
+ { |
+ // should not come here |
+ NS_TEST_ASSERT_MSG_EQ (0,1,"XXX"); |
+ } |
+} |
+ |
+class TdmaTestSuite : public TestSuite |
+{ |
+public: |
+ TdmaTestSuite () : TestSuite ("tdma", SYSTEM) |
+ { |
+ AddTestCase (new TdmaSlotAllocationTestCase ()); |
+ } |
+} g_tdmaTestSuite; |
+} |