Co channel Interference and Channel bonding simulation issue in WLAN

[sumon Debnath]

Hello every one

When two APs are within transmission range of each other, then they may interference each other. I want to simulate this scenario with respect to channel difference and distance between two APs. I have three relevent questions.

1. I have found in the mailing list that Spectrum module can model adjacent channel and co-channel interference. I try to write a simple script using spectrumPhy to model interference effect between two APs when they are within transmission range of each other. Can you tell me the configuration is ok or not for both type of interference modeling in ns3? I did not find any reference code for this type of problem. If i need additional modification please help me.

2. How I can change the transmission range of AP in ns3. I just know Range Propagation Loss Model that depends only on the distance (range) between transmitter and receiver.

3. For channel bonding case, two 20Mhz channels combined together to become 40Mhz bonded channel. I also want to simulate the bonded channel interference effect in ns3. Is it possible?

I set 40Mhz channel width by following global declaration

Config::Set ("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/Phy/ChannelWidth", UintegerValue (40));

Then I assign Channel 1 to AP1 and channe 11 with AP2 by the following command

spectrumPhy.Set ("ChannelNumber", UintegerValue(1));

spectrumPhy.Set ("ChannelNumber", UintegerValue(11));

Fow detail please find the attach file (Interference.cc).

My question is in addition of 20Mhz channel 1 which another 20 Mhz channel is used by simulator to make 40 Mhz bonded channel for AP1. Similarly what about for AP2?

According to my understanding AP1 may use (1, 5) channel pair and AP2 (9,13) channel pair. Right?

Please guide me to solve my proble and for my clarification.

Thank you very much.

With Best Regards,

Sumon

[sumon Debnath]

For more clarification I want to simulate adjacent channel and co channel interference of two APs

with respect to

i) Channel difference

ii) Distance between two Aps (for each channel pair we increase the distance between them)

iii) To configure two bonded channels, (1, 5) channel pairs for AP1 and (9, 13) channel pair for AP2

So if anyone please help me by answering my first mail then it will be very helpful for me.

Best Regards

Sumon

[Tommaso Pecorella]

Answers in-line.

On Thursday, February 9, 2017 at 11:52:59 AM UTC+1, sumon Debnath wrote:

Hello every one

When two APs are within transmission range of each other, then they may interference each other. I want to simulate this scenario with respect to channel difference and distance between two APs. I have three relevent questions.

1. I have found in the mailing list that Spectrum module can model adjacent channel and co-channel interference. I try to write a simple script using spectrumPhy to model interference effect between two APs when they are within transmission range of each other. Can you tell me the configuration is ok or not for both type of interference modeling in ns3? I did not find any reference code for this type of problem. If i need additional modification please help me.

Why don't you try ?

If the results are compliant with your expectation, then you're on the right path. If there's no interference... then there's an issue.

 

2. How I can change the transmission range of AP in ns3. I just know Range Propagation Loss Model that depends only on the distance (range) between transmitter and receiver.

Please search the group, we discussed many times about this. The short answer is: no, Range Propagation Loss Model is not he answer. The Tx power is.

 

3. For channel bonding case, two 20Mhz channels combined together to become 40Mhz bonded channel. I also want to simulate the bonded channel interference effect in ns3. Is it possible?

no idea. It is supported in 802.11ac, but that's still under development (as far as I know).

T.