1. TCP&UDP interaction in ns3 with priority queues
Jiayong Chen z
Li Zeng z

2. Aim of the project
Find out if there are any impacts on TCP and UDP interaction when queue system given TCP or UDP flows different priorities.
all statistic data from NS-3 simulation

3. Topology Create Carrier Sense Multiple Access (CSMA)channel like below
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LAN
Tools: CsmaHelper
NodeContainer
Ipv4AddressHelper
etc.

4. Observation Tools Use the APIs provided by ns-3 FlowMonitor
TCP throughput
UDP-client-server packet loss counter
 UDP packet loss

5. First In First Out queue

6. High Priority given to TCP flow

7. High Priority given to UDP flow

8. Conclusions
When UDP flows have higher priority in queue system, UDP packet loss decrease significantly
But if TCP flows given higher priority, the throughput increase not that much
So we suggest to give UDP flows higher priority in queue system when UDP & TCP share the same link.

9. Reference 1. ns-3 Tutorial
2. ns-3 Doxygen/Manual: Documentation of the public APIs of the simulator
3. ns-3 wiki

10. THANKS