use of void ns3::YansWifiPhy::SetChannelNumber ( uint16_t id )

[Michael]

I am trying to set up a wireless adhoc network where groups of nodes
are on different channels. What all needs to be set on each node to
enable this to work? I tried just setting the channel numbers
differently, but all nodes are still able to transmit/receive to all
nodes, regardless of which channel number they are assigned. Does
this require a separate instance of WifiPhyChannel for each channel
number? I didn't see any of the examples that use SetChannelNumber.

Thanks!
Michael

[Mathieu Lacage]

Which version of ns-3 are you using ?

No: all devices should be connected to the same instance of a
WifiPhyChannel but they should be assigned different 'channel
number's. YansWifiPhyChannel does use the 'channel number' to decide
when to forward a packet to a PHY or not.

Mathieu
--
Mathieu Lacage <mathieu...@gmail.com>

[Michael]

I am using the latest dev version of ns-3.

I added the following lines into third.cc to see if I can figure out
how to use ChannelNumber:
insert at line 86 (above the phy.SetChannel (channel.Create ()); line:
YansWifiPhy testCN;
testCN.SetChannelNumber (1000);

When I do this I get an error:
"assert failed. file=../src/devices/wifi/wifi-phy-state-helper.cc,
line=379, cond="IsStateSwitching()"
line 379 is NS_ASSERT(IsStateSwitching());

I checked in yans-wifi-phy.cc for the same assert, and on line 311 it
is NS_ASSERT(!IsStateSwitching());

When I added the ! to line 379 of wifi-phy-state-helper.cc so that it
would be the same as line 311 of yans-wifi-phy.cc, the error went
away.

I'm not sure if I did something wrong with my attempt at using
ChannelNumber, or if the ! got lost.

Michael

On Sep 15, 3:08 am, Mathieu Lacage <mathieu.lac...@gmail.com> wrote:
> Which version of ns-3 are you using ?
>

> On Fri, Sep 11, 2009 at 6:22 PM, Michael <nowat...@gmail.com> wrote:
> > wireless adhoc network where groups of nodes
> > are on different channels.  What all needs to be set on each node to
> > enable this to work?  I tried just setting the channel numbers
> > differently, but all nodes are still able to transmit/receive to all
> > nodes, regardless of which channel number they are assigned.  Does
> > this require a separate instance of WifiPhyChannel for each channel
> > number?  I didn't see any of the examples that use SetChannelNumber
>
> No: all devices should be connected to the same instance of a
> WifiPhyChannel but they should be assigned different 'channel
> number's. YansWifiPhyChannel does use the 'channel number' to decide
> when to forward a packet to a PHY or not.
>
> Mathieu
> --

> Mathieu Lacage <mathieu.lac...@gmail.com>

[Raad Qandah]

Dear Micheal,

I need help in the same topic you have been asking about I need an example of how I can make different network (nodes) operate on different channels
can you provide me with an example or document about this
thanks in advance

Regards,
Raad Qandah