How to modify wifi stanode ssid and channel during run time? And some related question.

[童大維]

Hello everyones , I'm new to NS3.

I modified the example file third.cc , and made it's topology just like

                                *

                                |

                                |

                                *

                              /    \

                            /        \

                           *          *

                          ap1       ap2

                                 *

                                 STA

And make sure that the distance between ap1-sta is as long as ap2-sta .

I found that if they are in same channel and same ssid the STA can't connect to any ap , so I change 2 ap in different channel and ssid.

Then , I used Simulator::Schedule to install a new WifiNetDevice  , but it didn't work well , I can't change the connection form ap1 to ap2 , how should I do .

And how to uninstall an older netdevice (i.e staDevices=wifi.install(phy , mac , wifistanode)    how to uninstall or modify it?)

Simplify to said , I want to    change the connection form ap1 to ap2 during runtime , how should i do?

Thank for any reply ,

Regards,

Tung

[Tommaso Pecorella]

Hi,

NetDevices can not be created or deleted once the simulation has begun. We have a proposal to stop and restart a NetDevice, but it has not been finalized yet. In the meantime, some netDevice support a sleep mode.

Nevertheless, what you're trying to do seems to be an handover. I'd strongly suggest to think about it.

You might also want to take a look at the StaWifiMac::StartActiveAssociation (void) function.

T.

[童大維]

Thank you so much for your reply , what I'm trying to do is Handout .

I'll try to find more information about handout and read some document  about StaWifiMac::StartActiveAssociation (void) function , 

Really thanks for your help

Regards,

Tung.