def update(self):
"""
"""
# update the RBs used by each ue
self._update_ue_rb()
# ---
total_rb_demand = sum(self._rb_map.values())
# IDEAL CASE: we have more RBs than the UEs demand
# == all UEs are satified with their demand
if total_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
self._grid.logger.log("op:antenna_good_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" +
str(total_rb_demand/Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", nconnected_ues:" + str(len(self.connected_ues))
)
# --
for ue in self.connected_ues:
ue.tx_rate = ue.demand
# NOT IDEAL CASE: we have less RBs than the UEs demand
# == available RBs split evenly among UEs
else:
# quantity of RBs available
avail_rb = Antenna.BW_RB_MAP[self._cur_ch_bw]
# bivide equaly among all UEs
rb_per_ue = math.floor(avail_rb/len(self.connected_ues))
# set UE tx_rate based
for ue in self.connected_ues:
ue.tx_rate = rb_per_ue * util.snr_to_bit(util.snr(ue, self) )
self._grid.logger.log("op:antenna_bad_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" + str(1.0) +
", nconnected_ues:" + str(len(self.connected_ues))
)
if len(self.connected_ues) != self.prev_n_ues:
if self.prev_n_ues == 0:
self._grid.logger.log("op:antenna_wake_up")
elif len(self.connected_ues) == 0:
self._grid.logger.log("op:antenna_idle")
self.prev_n_ues = len(self.connected_ues)
# Notify BBU that this antenna requires more bandwidth
self._ch_bw_required = self.rb_demand_to_ch_bw(total_rb_demand)
if self._ch_bw_required != self._cur_ch_bw:
self._bbu.event(controller.ANTENNA_BW_UPDATE, self)
def _update_ue_rb(self):
""" Check the total RBs required to satisfy UEs demands
"""
self._rb_map = {}
for ue in self.connected_ues:
# calculate the total RBs for each UE
# mult per 84 because: 84 ofdm symbons in a RB
self._rb_map[ue] = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
def _update_ue_rb(self):
""" Check the total RBs required to satisfy UEs demands
"""
self._rb_map = {}
for ue in self._ues:
# calculate the total RBs for each UE
# mult per 84 because: 84 ofdm symbons in a RB
self._rb_map[ue] = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
def can_fit_ue(self, ue):
# BS always can fit an UE
if self.type == Antenna.BS_ID:
return True
total_rb_demand = sum(self._rb_map.values())
ue_rb_demand = ue.demand / (util.snr_to_bit(util.snr(ue, self, 0)) * 84.0)
if total_rb_demand + ue_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
return True
else:
return False
def update(self):
"""
"""
# update the RBs used by each ue
self._update_ue_rb()
# ---
total_rb_demand = sum(self._rb_map.values())
# IDEAL CASE: we have more RBs than the UEs demand
# == all UEs are satified with their demand
if total_rb_demand < Antenna.BW_RB_MAP[self._cur_ch_bw]:
self._grid.logger.log("op:antenna_good_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" +
str(total_rb_demand/Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", n_ues:" + str(len(self._ues))
)
# --
for ue in self._ues:
ue.tx_rate = ue.demand
# NOT IDEAL CASE: we have less RBs than the UEs demand
# == available RBs split evenly among UEs
else:
# quantity of RBs available
avail_rb = Antenna.BW_RB_MAP[self._cur_ch_bw]
# bivide equaly among all UEs
rb_per_ue = math.floor(avail_rb/len(self._ues))
# set UE tx_rate based
for ue in self._ues:
ue.tx_rate = rb_per_ue * util.snr_to_bit(util.snr(ue, self) )
self._grid.logger.log("op:antenna_bad_cap, antenna:" +
str(self) +
", rb_demand:" + str(total_rb_demand) +
", avail_rb:" + str(Antenna.BW_RB_MAP[self._cur_ch_bw]) +
", per_used:" + str(1.0) +
", n_ues:" + str(len(self._ues))
)
# Notify BBU that this antenna requires more bandwidth
self._ch_bw_required = self.rb_demand_to_ch_bw(total_rb_demand)
if self._ch_bw_required != self._cur_ch_bw:
self._bbu.event(controller.ANTENNA_BW_UPDATE, self)