Simulation example: Measuring the effects of RTS/CTS on 802.11 link

How to turn off RTS/CTS?


put this line in the TCL script.

#disable RTS for 802.11 MAC
Mac/802_11 set RTSThreshold_   3000

Simulation Topology:

Link Connectivity Graph:





Two flows are given: 1--> 3 , and 5---> 7


Simulation Parameters:

Datarate	1Mbps
IFQ Length	50
Routing Protocol	DSDV
Packet size	1000Bytes
Packet rate	25-200 per second
Transmission Range	250m
Test duration	150 sec.

Simulation Results:

Observations & Conclusions:

• Observed route establish time, depends on the number of hops in DSDV is 30-50 seconds. why?
• RTS/CTS does not improve throughout in multi-hop wireless network
• Actully, we cannot draw general conlcusion from this specific case of flow and routing protocols.