def handover(self, sta, ap, wlan, dist):
"""
handover
:param sta: station
:param ap: access point
:param wlan: wlan ID
:param dist: distance between source and destination
"""
changeAP = False
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != '' and sta.params['associatedTo'][wlan] != ap \
and sta.params['associatedTo'][wlan] != '':
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
if sta.params['associatedTo'][wlan] == '' or changeAP == True:
if ap not in sta.params['associatedTo']:
cls = Association
if 'encrypt' not in ap.params:
cls.associate_noEncrypt(sta, ap, wlan)
else:
if ap.params['encrypt'][0] == 'wpa' or ap.params[
'encrypt'][0] == 'wpa2':
cls.associate_wpa(sta, ap, wlan)
elif ap.params['encrypt'][0] == 'wep':
cls.associate_wep(sta, ap, wlan)
self.updateAssociation(sta, ap, wlan)
def handover(self, sta, ap, wlan, dist):
"""
handover
:param sta: station
:param ap: access point
:param wlan: wlan ID
:param dist: distance between source and destination
"""
associated = True
if dist > ap.params['range']:
if ap == sta.params['associatedTo'][wlan]:
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
sta.params['channel'][wlan] = 0
sta.params['frequency'][wlan] = 0
ap.params['associatedStations'].pop(sta, None)
else:
if dist >= 0.01 and sta.params['associatedTo'][wlan] == ap:
self.updateParams(sta, ap, wlan)
setChannelParams(sta, ap, wlan, dist)
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][wlan] or dist <= ap.params['range']:
changeAP = False
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False and sta.params['associatedTo'][wlan] != '':
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
if associated == False or changeAP == True:
if ap not in sta.params['associatedTo']:
if sta.params['associatedTo'][wlan] == '' or changeAP == True:
if 'encrypt' not in ap.params:
self.associate_infra(sta, ap, wlan)
else:
if ap.params['encrypt'][0] == 'wpa' or ap.params['encrypt'][0] == 'wpa2':
self.associate_wpa(sta, ap, wlan)
elif ap.params['encrypt'][0] == 'wep':
self.associate_wep(sta, ap, wlan)
if dist >= 0.01 and sta.params['associatedTo'][wlan] != '':
self.updateParams(sta, ap, wlan)
setChannelParams(sta, ap, wlan, dist)
def handover(self, sta, ap, wlan, dist):
"""handover"""
associated = True
if dist > ap.params['range']:
if ap == sta.params['associatedTo'][wlan]:
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
ap.params['associatedStations'].remove(sta)
else:
if dist >= 0.01 and sta.params['associatedTo'][wlan] == ap:
self.updateParams(sta, ap, wlan)
setInfraChannelParams(sta, ap, wlan, dist, self.staList)
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][
wlan] or dist <= ap.params['range']:
changeAP = False
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False and sta.params[
'associatedTo'][wlan] != '':
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
# Go to handover
if associated == False or changeAP == True:
if ap not in sta.params['associatedTo']:
if sta.params['associatedTo'][
wlan] == '' or changeAP == True:
if 'encrypt' not in ap.params:
self.associate_infra(sta, ap, wlan)
else:
if ap.params['encrypt'][
0] == 'wpa' or ap.params['encrypt'][
0] == 'wpa2':
self.associate_wpa(sta, ap, wlan)
elif ap.params['encrypt'][0] == 'wep':
self.associate_wep(sta, ap, wlan)
if dist >= 0.01 and sta.params['associatedTo'][
wlan] != '':
setInfraChannelParams(sta, ap, wlan, dist,
self.staList)
# have to verify this
time.sleep(0.01)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
time = abs(sta.speed)
staList = emulationEnvironment.staList
if ap == sta.associatedAp[wlan]:
if dist > ap.range + sta.range:
sta.pexec('iw dev %s-wlan%s disconnect' % (sta, wlan))
sta.associatedAp[wlan] = 'NoAssociated'
sta.rssi[wlan] = 0
sta.snr[wlan] = 0
emulationEnvironment.numberOfAssociatedStations(ap)
else:
#if emulationEnvironment.continue_:
channelParameters(sta, ap, wlan, dist, staList, time)
else:
if dist < ap.range + sta.range:
aps = 0
for n in range(0,len(sta.associatedAp)):
if str(sta.associatedAp[n]) != 'NoAssociated':
aps+=1
if len(sta.associatedAp) == aps:
associated = True
else:
associated = False
else:
associated = False
if ap == sta.associatedAp[wlan] or dist < (ap.range + sta.range):
#Only if it is a mobility environment
changeAP = False
association_Control = dict ()
"""Association Control: mechanisms that optimize the use of the APs"""
if emulationEnvironment.associationControlMethod != False:
ac = emulationEnvironment.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
association_Control.setdefault( 'ac', ac )
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, **association_Control)
channelParameters(sta, ap, wlan, dist, staList, time)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
time = abs(sta.params['speed'])
staList = self.staList
if ap == sta.associatedAp[wlan]:
if dist > ap.range + sta.range:
debug( '\niw dev %s disconnect' % sta.params['wlan'][wlan] )
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.associatedAp[wlan] = 'NoAssociated'
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
self.numberOfAssociatedStations(ap)
else:
channelParameters(sta, ap, wlan, dist, staList, time)
else:
if dist < ap.range + sta.range:
aps = 0
for n in range(0,len(sta.associatedAp)):
if str(sta.associatedAp[n]) != 'NoAssociated':
aps+=1
if len(sta.associatedAp) == aps:
associated = True
else:
associated = False
else:
associated = False
if ap == sta.associatedAp[wlan] or dist < (ap.range + sta.range):
#Only if it is a mobility environment
changeAP = False
association_Control = dict ()
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False:
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
association_Control.setdefault( 'ac', ac )
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, **association_Control)
channelParameters(sta, ap, wlan, dist, staList, time)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
#time = abs(sta.params['speed'])
staList = self.staList
if ap == sta.params['associatedTo'][wlan]:
if dist > ap.range:
debug('\niw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
ap.associatedStations.remove(sta)
else:
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
if dist < ap.range:
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][wlan] or dist < ap.range:
changeAP = False
ac = None
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
sta.params['channel'][wlan] = ap.params['channel'][0]
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False:
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, ac)
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
#have to verify this
time.sleep(0.01)
def setChannelParameters(self, sta, ap, dist, wlan):
""" Wifi Parameters """
associated = True
#time = abs(sta.params['speed'])
staList = self.staList
if ap == sta.params['associatedTo'][wlan]:
if dist > ap.params['range']:
debug('\niw dev %s disconnect' % sta.params['wlan'][wlan])
sta.pexec('iw dev %s disconnect' % sta.params['wlan'][wlan])
sta.params['associatedTo'][wlan] = ''
sta.params['rssi'][wlan] = 0
sta.params['snr'][wlan] = 0
ap.associatedStations.remove(sta)
else:
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
if dist < ap.params['range']:
if sta.params['associatedTo'][wlan] == '':
associated = False
else:
associated = False
if ap == sta.params['associatedTo'][wlan] or dist < ap.params['range']:
changeAP = False
ac = None
sta.params['frequency'][wlan] = channelParameters.frequency(ap, 0)
sta.params['channel'][wlan] = ap.params['channel'][0]
"""Association Control: mechanisms that optimize the use of the APs"""
if self.associationControlMethod != False:
ac = self.associationControlMethod
value = associationControl(sta, ap, wlan, ac)
changeAP = value.changeAP
#Go to handover
if associated == False or changeAP == True:
self.handover(sta, ap, wlan, dist, changeAP, ac)
channelParameters(sta, ap, wlan, dist, staList, 0)
else:
#have to verify this
time.sleep(0.01)
