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Propagate power per band during autodesign

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Target setting computation is done going through each element of the OMS
and computing resulting delta power after each amplifier element. In order
to account for different delta power per band (multi band autodesign), the
computation must be made per band. The previous introduction of a standard
name for bands ("CBAND", "LBAND") ensures a stable key to index these
delta power computation.

Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com>
Change-Id: Ida4b2486ebde4f2a1fb21a44458d1fe34a788d1f
This commit is contained in:
EstherLerouzic
2024-06-21 15:35:24 +02:00
committed by Esther Le Rouzic
parent bdcffc2a5e
commit 64a91256fc
1 changed files with 41 additions and 31 deletions
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72
gnpy/core/network.py
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@@ -19,7 +19,7 @@ from gnpy.core.exceptions import ConfigurationError, NetworkTopologyError
from gnpy.core.utils import round2float, convert_length, psd2powerdbm, lin2db, watt2dbm, dbm2watt, automatic_nch, \
find_common_range
from gnpy.core.info import ReferenceCarrier, create_input_spectral_information
from gnpy.core.parameters import SimParams, EdfaParams
from gnpy.core.parameters import SimParams, EdfaParams, find_band_name, FrequencyBand
from gnpy.core.science_utils import RamanSolver
@@ -569,43 +569,53 @@ def set_egress_amplifier(network: DiGraph, this_node: Union[elements.Roadm, elem
power_mode = equipment['Span']['default'].power_mode
next_oms = (n for n in network.successors(this_node) if not isinstance(n, elements.Transceiver))
for oms in next_oms:
_design_bands = {find_band_name(FrequencyBand(f_min=e["f_min"], f_max=e["f_max"])): e
for e in this_node.per_degree_design_bands[oms.uid]}
oms_nodes = get_oms_edge_list(oms, network)
# go through all the OMS departing from the ROADM
prev_node = this_node
node = oms
if isinstance(this_node, elements.Transceiver):
# todo change pref to a ref channel
if equipment['SI']['default'].tx_power_dbm is not None:
this_node_out_power = equipment['SI']['default'].tx_power_dbm
else:
this_node_out_power = pref_ch_db
if isinstance(this_node, elements.Roadm):
# get target power out from ROADM for the reference carrier based on equalization settings
this_node_out_power = this_node.get_per_degree_ref_power(degree=node.uid)
# use the target power on this degree
prev_dp = this_node_out_power - pref_ch_db
dp = prev_dp
prev_voa = 0
voa = 0
visited_nodes = []
while not (isinstance(node, elements.Roadm) or isinstance(node, elements.Transceiver)):
# initialize dp and prev_dp with roadm out target or transceiver power. Use design bands.
dp = {}
prev_dp = {}
voa = {}
prev_voa = {}
for band_name, band in _design_bands.items():
if isinstance(this_node, elements.Transceiver):
# todo change pref to a ref channel
if equipment['SI']['default'].tx_power_dbm is not None:
this_node_out_power = equipment['SI']['default'].tx_power_dbm
else:
this_node_out_power = pref_ch_db
if isinstance(this_node, elements.Roadm):
# get target power out from ROADM for the reference carrier based on equalization settings
this_node_out_power = this_node.get_per_degree_ref_power(degree=node.uid)
# use the target power on this degree
prev_dp[band_name] = this_node_out_power - pref_ch_db
dp[band_name] = prev_dp[band_name]
prev_voa[band_name] = 0
voa[band_name] = 0
for node, next_node in oms_nodes:
# go through all nodes in the OMS (loop until next Roadm instance)
next_node = get_next_node(node, network)
visited_nodes.append(node)
if next_node in visited_nodes:
raise NetworkTopologyError(f'Loop detected for {type(node).__name__} {node.uid}, '
+ 'please check network topology')
if isinstance(node, elements.Edfa):
dp, voa = set_one_amplifier(node, prev_node, next_node, power_mode, prev_voa, prev_dp,
pref_ch_db, pref_total_db, network, equipment, verbose)
band_name, _ = next((n, b) for n, b in _design_bands.items())
dp[band_name], voa[band_name] = set_one_amplifier(node, prev_node, next_node, power_mode,
prev_voa[band_name], prev_dp[band_name],
pref_ch_db, pref_total_db,
network, equipment, verbose)
elif isinstance(node, elements.RamanFiber):
# this is to record the expected gain in Raman fiber in its .estimated_gain attribute.
_ = span_loss(network, node, equipment, input_power=pref_ch_db + dp)
if isinstance(node, elements.Multiband_amplifier):
for amp in node.amplifiers.values():
dp, voa = set_one_amplifier(amp, prev_node, next_node, power_mode, prev_voa, prev_dp,
pref_ch_db, pref_total_db, network, equipment, verbose)
prev_dp = dp
prev_voa = voa
band_name, _ = next((n, b) for n, b in _design_bands.items())
_ = span_loss(network, node, equipment, input_power=pref_ch_db + dp[band_name])
elif isinstance(node, elements.Multiband_amplifier):
for band_name, amp in node.amplifiers.items():
dp[band_name], voa[band_name] = \
set_one_amplifier(amp, prev_node, next_node, power_mode,
prev_voa[band_name], prev_dp[band_name],
pref_ch_db, pref_total_db, network, equipment, verbose)
prev_dp.update(**dp)
prev_voa.update(**voa)
prev_node = node
node = next_node