[Ns-developers] access point selection based on the received signal strength

[ichrak amdouni]

Hi all,


 I am developing an application for access point selection in vehicular
adhoc networks.


 Concerning the association and disassociation procedures management in ns3,

I noticed that the NqstaWifiMac triggers association as an answer to the
first beacon (which has to belong to a NqapWifiMac having the same ssid or a
broadcast ssid) it receives.

Here I need to guide the station to the strongest received signal quality.
This parameter is the rxPowerDbm of the beacon that
WifiPhy::StartReceivePacket calculates giving the RxGain. The station can
listen for beacons for a beacon interval, and then triggers association to
the selected AP.



 Concerning the detection of disassociation, it is controlled by the
NqstaWifiMac::RestartBeaconWatchdog and NqstaWifiMac::MissedBeacons method.
Here, nothing says that it is the access point to which the station is
associated is not sending beacons anymore, I expected to find something that
keep track of that particular access point. So how can we set the station
state to beacon_missed and trigger probe requests' sending?


 Am I right?


 Does anyone see how can I change this behavior to make the disassociation
detection based on the received signal using the same philosophy of the
missed beacons events.


 Thank you in advance for any remarks.


 Regards,

Ichrak.