mirror of
https://github.com/Telecominfraproject/oopt-gnpy.git
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f2039fbe1c
In order to be used by API. Co-authored-by: Renato Ambrosone <renato.ambrosone@polito.it> Signed-off-by: EstherLerouzic <esther.lerouzic@orange.com> Change-Id: I12111427c8a90b85b3158cdd95f4ee771cb39316
992 lines
44 KiB
Python
992 lines
44 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# SPDX-License-Identifier: BSD-3-Clause
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# test_equalization
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# Copyright (C) 2025 Telecom Infra Project and GNPy contributors
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# see AUTHORS.rst for a list of contributors
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"""
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checks that new equalization option give the same output as old one:
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"""
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from pathlib import Path
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import pytest
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from numpy.testing import assert_allclose, assert_array_equal, assert_raises
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from numpy import array
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from copy import deepcopy
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from gnpy.core.utils import lin2db, automatic_nch, dbm2watt, power_dbm_to_psd_mw_ghz, watt2dbm, psd2powerdbm
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from gnpy.core.network import build_network
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from gnpy.core.elements import Roadm
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from gnpy.core.info import create_input_spectral_information, create_arbitrary_spectral_information, ReferenceCarrier, \
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carriers_to_spectral_information
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from gnpy.core.equipment import trx_mode_params
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from gnpy.core.exceptions import ConfigurationError
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from gnpy.tools.json_io import network_from_json, load_equipment, load_network, _spectrum_from_json, load_json, \
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Transceiver, requests_from_json
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from gnpy.topology.request import PathRequest, compute_constrained_path, propagate, propagate_and_optimize_mode
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from gnpy.topology.spectrum_assignment import build_oms_list
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TEST_DIR = Path(__file__).parent
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DATA_DIR = TEST_DIR / 'data'
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EQPT_FILENAME = DATA_DIR / 'eqpt_config.json'
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NETWORK_FILENAME = DATA_DIR / 'testTopology_expected.json'
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EXTRA_CONFIGS = {"std_medium_gain_advanced_config.json": load_json(DATA_DIR / "std_medium_gain_advanced_config.json")}
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@pytest.mark.parametrize('degree, equalization_type, target, expected_pch_out_dbm, expected_si',
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[('east edfa in Lannion_CAS to Morlaix', 'target_pch_out_db', -20, -20, [-20, -20, -20, -20, -20]),
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('east edfa in Lannion_CAS to Morlaix', 'target_psd_out_mWperGHz', 5e-4, -17.9588,
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[-17.9588, -16.7778, -14.9485, -16.7778, -17.9588]),
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('east edfa in Lannion_CAS to Morlaix', 'target_out_mWperSlotWidth', 3e-4, -18.2390,
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[-19.4885, -18.2390, -16.4781, -18.2390, -19.4885]),
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('east edfa in Lannion_CAS to Corlay', 'target_pch_out_db', -20, -16, [-16, -16, -16, -16, -16]),
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('east edfa in Lannion_CAS to Corlay', 'target_psd_out_mWperGHz', 5e-4, -16, [-16, -16, -16, -16, -16]),
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('east edfa in Lannion_CAS to Corlay', 'target_out_mWperSlotWidth', 5e-4, -16, [-16, -16, -16, -16, -16]),
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('east edfa in Lannion_CAS to Stbrieuc', 'target_pch_out_db', -20, -17.16699,
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[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771]),
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('east edfa in Lannion_CAS to Stbrieuc', 'target_psd_out_mWperGHz', 5e-4, -17.16699,
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[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771]),
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('east edfa in Lannion_CAS to Stbrieuc', 'target_out_mWperSlotWidth', 5e-4, -17.16699,
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[-17.16698771, -15.98599459, -14.15668776, -15.98599459, -17.16698771])])
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@pytest.mark.parametrize('delta_pdb_per_channel', [[0, 0, 0, 0, 0], [1, 3, 0, -5, 0]])
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def test_equalization_combination_degree(delta_pdb_per_channel, degree, equalization_type, target,
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expected_pch_out_dbm, expected_si):
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"""Check that ROADM correctly computes power of thr reference channel based on different
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combination of equalization for ROADM and per degree
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"""
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roadm_config = {
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"uid": "roadm Lannion_CAS",
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"type_variety": "default",
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"params": {
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"per_degree_pch_out_db": {
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"east edfa in Lannion_CAS to Corlay": -16
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},
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"per_degree_psd_out_mWperGHz": {
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"east edfa in Lannion_CAS to Stbrieuc": 6e-4
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},
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equalization_type: target,
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"add_drop_osnr": 38,
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"pmd": 0,
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"pdl": 0,
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"restrictions": {
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"preamp_variety_list": [],
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"booster_variety_list": []
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},
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"roadm-path-impairments": [],
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"design_bands": None
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}
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}
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roadm = Roadm(**roadm_config)
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roadm.set_roadm_paths(from_degree='tata', to_degree=degree, path_type='express')
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roadm.ref_pch_in_dbm['tata'] = 0
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roadm.ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
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frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
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slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
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baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
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signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
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si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
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signal=signal, baud_rate=baud_rate, roll_off=0.15,
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delta_pdb_per_channel=delta_pdb_per_channel,
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tx_osnr=None)
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to_json_before_propagation = {
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'uid': 'roadm Lannion_CAS',
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'type': 'Roadm',
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"type_variety": "default",
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'params': {
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equalization_type: target,
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'restrictions': {'preamp_variety_list': [], 'booster_variety_list': []},
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'per_degree_pch_out_db': {
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'east edfa in Lannion_CAS to Corlay': -16},
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"per_degree_psd_out_mWperGHz": {
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"east edfa in Lannion_CAS to Stbrieuc": 6e-4
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}
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},
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'metadata': {'location': {'latitude': 0, 'longitude': 0, 'city': None, 'region': None}}
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}
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assert roadm.to_json == to_json_before_propagation
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si = roadm(si, degree=degree, from_degree='tata')
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assert roadm.ref_pch_out_dbm == pytest.approx(expected_pch_out_dbm, rel=1e-4)
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assert_allclose(expected_si, roadm.get_per_degree_power(degree, spectral_info=si), rtol=1e-3)
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@pytest.mark.parametrize('equalization_type', ["target_psd_out_mWperGHz", "target_out_mWperSlotWidth"])
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def test_wrong_element_config(equalization_type):
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"""Check that 2 equalization correcty raise a config error
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"""
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roadm_config = {
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"uid": "roadm Brest_KLA",
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"params": {
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"per_degree_pch_out_db": {},
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"target_pch_out_db": -20,
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equalization_type: 3.125e-4,
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"add_drop_osnr": 38,
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"pmd": 0,
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"pdl": 0,
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"restrictions": {
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"preamp_variety_list": [],
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"booster_variety_list": []
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},
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"design_bands": None
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},
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"metadata": {
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"location": {
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"city": "Brest_KLA",
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"region": "RLD",
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"latitude": 4.0,
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"longitude": 0.0
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}
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}
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}
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with pytest.raises(ConfigurationError):
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_ = Roadm(**roadm_config)
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def test_merge_equalization():
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"""Check that if equalization is not defined default one is correctly take and
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else that it is not overwritten
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"""
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json_data = {
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"elements": [{
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"uid": "roadm Brest_KLA",
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"type": "Roadm"}],
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"connections": []
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}
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equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
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network = network_from_json(json_data, equipment)
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roadm = [n for n in network.nodes()][0]
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assert roadm.target_pch_out_dbm == -20
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delattr(equipment['Roadm']['default'], 'target_pch_out_db')
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setattr(equipment['Roadm']['default'], 'target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 32e9))
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# json_data is changed (type is popped from json_data with network_from_json_function). Create a new one:
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json_data = {
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"elements": [{
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"uid": "roadm Brest_KLA",
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"type": "Roadm"}],
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"connections": []
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}
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network = network_from_json(json_data, equipment)
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roadm = [n for n in network.nodes()][0]
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assert roadm.target_pch_out_dbm is None
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assert roadm.target_psd_out_mWperGHz == 3.125e-4
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assert roadm.target_out_mWperSlotWidth is None
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json_data = {
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"elements": [{
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"uid": "roadm Brest_KLA",
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"type": "Roadm",
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"params": {"target_pch_out_db": -18}}],
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"connections": []
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}
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network = network_from_json(json_data, equipment)
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roadm = [n for n in network.nodes()][0]
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assert roadm.target_pch_out_dbm == -18
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assert roadm.target_psd_out_mWperGHz is None
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assert roadm.target_out_mWperSlotWidth is None
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json_data = {
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"elements": [{
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"uid": "roadm Brest_KLA",
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"type": "Roadm",
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"params": {"target_psd_out_mWperGHz": 5e-4}}],
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"connections": []
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}
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network = network_from_json(json_data, equipment)
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roadm = [n for n in network.nodes()][0]
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assert roadm.target_pch_out_dbm is None
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assert roadm.target_psd_out_mWperGHz == 5e-4
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assert roadm.target_out_mWperSlotWidth is None
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json_data = {
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"elements": [{
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"uid": "roadm Brest_KLA",
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"type": "Roadm",
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"params": {"target_out_mWperSlotWidth": 3e-4}}],
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"connections": []
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}
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network = network_from_json(json_data, equipment)
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roadm = [n for n in network.nodes()][0]
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assert roadm.target_pch_out_dbm is None
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assert roadm.target_psd_out_mWperGHz is None
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assert roadm.target_out_mWperSlotWidth == 3e-4
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@pytest.mark.parametrize('target_out, delta_pdb_per_channel, correction',
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[(-20, [0, 1, 3, 0.5, -2], [0, 0, 5, 5.5, 0]),
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(-20, [0, 0, 0, 0, 0], [0, 0, 2, 5, 0]),
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(-20, [-2, -2, -2, -2, -2], [0, 0, 0, 3, 0]),
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(-20, [0, 2, -2, -5, 4], [0, 0, 0, 0, 0]),
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(-25.5, [0, 1, 3, 0.5, -2], [0, 0, 0, 0, 0]), ])
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def test_low_input_power(target_out, delta_pdb_per_channel, correction):
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"""check that ROADM correctly equalizes on small examples, assumes p_span_0 = 0
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case of power equalisation
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"""
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frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
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slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
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baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
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signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
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target = target_out + array(delta_pdb_per_channel)
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si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
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signal=signal, baud_rate=baud_rate, roll_off=0.15,
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delta_pdb_per_channel=delta_pdb_per_channel,
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tx_osnr=None)
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roadm_config = {
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"uid": "roadm Brest_KLA",
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"params": {
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"per_degree_pch_out_db": {},
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"target_pch_out_db": target_out,
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"add_drop_osnr": 38,
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"pmd": 0,
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"pdl": 0,
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"restrictions": {
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"preamp_variety_list": [],
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"booster_variety_list": []
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},
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"roadm-path-impairments": [],
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"design_bands": None
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},
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"metadata": {
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"location": {
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"city": "Brest_KLA",
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"region": "RLD",
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"latitude": 4.0,
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"longitude": 0.0
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}
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}
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}
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roadm = Roadm(**roadm_config)
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roadm.set_roadm_paths(from_degree='tata', to_degree='toto', path_type='express')
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roadm.ref_pch_in_dbm['tata'] = 0
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roadm.ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
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si = roadm(si, degree='toto', from_degree='tata')
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assert_allclose(watt2dbm(si.signal), target - correction, rtol=1e-5)
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# in other words check that if target is below input power, target is applied else power is unchanged
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assert_allclose((watt2dbm(signal) >= target) * target + (watt2dbm(signal) < target) * watt2dbm(signal),
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watt2dbm(si.signal), rtol=1e-5)
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@pytest.mark.parametrize('target_out, delta_pdb_per_channel, correction',
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[(3.125e-4,
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[0, 0, 0, 0, 0],
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[0, 0, 2 + lin2db(64 / 32), 5 + lin2db(42 / 32), 0]),
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(3.125e-4,
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[1, 3, 0, -5, 0],
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[1, 1 + lin2db(42 / 32), 2 + lin2db(64 / 32), 0 + lin2db(42 / 32), 0]), ])
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def test_2low_input_power(target_out, delta_pdb_per_channel, correction):
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"""check that ROADM correctly equalizes on small examples, assumes p_span_0 = 0
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case of PSD equalisation
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"""
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frequency = 191e12 + array([0, 50e9, 150e9, 225e9, 275e9])
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slot_width = array([37.5e9, 50e9, 75e9, 50e9, 37.5e9])
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baud_rate = array([32e9, 42e9, 64e9, 42e9, 32e9])
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signal = dbm2watt(array([-20.0, -18.0, -22.0, -25.0, -16.0]))
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target = psd2powerdbm(target_out, baud_rate) + array(delta_pdb_per_channel)
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si = create_arbitrary_spectral_information(frequency=frequency, slot_width=slot_width,
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signal=signal, baud_rate=baud_rate, roll_off=0.15,
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delta_pdb_per_channel=delta_pdb_per_channel,
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tx_osnr=None)
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roadm_config = {
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"uid": "roadm Brest_KLA",
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"params": {
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"per_degree_pch_out_db": {},
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"target_psd_out_mWperGHz": target_out,
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"add_drop_osnr": 38,
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"pmd": 0,
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"pdl": 0,
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"restrictions": {
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"preamp_variety_list": [],
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"booster_variety_list": []
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},
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"roadm-path-impairments": [],
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"design_bands": None
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},
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"metadata": {
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"location": {
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"city": "Brest_KLA",
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"region": "RLD",
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"latitude": 4.0,
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"longitude": 0.0
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}
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}
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}
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roadm = Roadm(**roadm_config)
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roadm.set_roadm_paths(from_degree='tata', to_degree='toto', path_type='express')
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roadm.ref_pch_in_dbm['tata'] = 0
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roadm.ref_carrier = ReferenceCarrier(baud_rate=32e9, slot_width=50e9)
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si = roadm(si, degree='toto', from_degree='tata')
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assert_allclose(watt2dbm(si.signal), target - correction, rtol=1e-5)
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def pathrequest(pch_dbm, nb_channels):
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"""create ref channel for defined power settings
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"""
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params = {
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"power": dbm2watt(pch_dbm),
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"tx_power": dbm2watt(pch_dbm),
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"nb_channel": nb_channels,
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'request_id': None,
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'trx_type': None,
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'trx_mode': None,
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'source': None,
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'destination': None,
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'bidir': False,
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'nodes_list': [],
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'loose_list': [],
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'format': '',
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'baud_rate': None,
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'bit_rate': None,
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'roll_off': None,
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'OSNR': None,
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'penalties': None,
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'path_bandwidth': None,
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'effective_freq_slot': None,
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'f_min': None,
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'f_max': None,
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'spacing': None,
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'min_spacing': None,
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'cost': None,
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'equalization_offset_db': None,
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'tx_osnr': None
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}
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return PathRequest(**params)
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def net_setup(equipment, deltap=0):
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"""common setup for tests: builds network, equipment and oms only once"""
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network = load_network(NETWORK_FILENAME, equipment)
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spectrum = equipment['SI']['default']
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p_db = spectrum.power_dbm + deltap
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nb_channels = automatic_nch(spectrum.f_min, spectrum.f_max, spectrum.spacing)
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build_network(network, equipment, pathrequest(p_db, nb_channels))
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build_oms_list(network, equipment)
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return network
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def create_voyager_req(equipment, source, dest, bidir, nodes_list, loose_list, mode, spacing, power_dbm):
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"""create the usual request list according to parameters"""
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params = {'request_id': 'test_request',
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'source': source,
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'bidir': bidir,
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'destination': dest,
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'trx_type': 'Voyager',
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'trx_mode': mode,
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'format': mode,
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'spacing': spacing,
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'nodes_list': nodes_list,
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'loose_list': loose_list,
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'path_bandwidth': 100.0e9,
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'effective_freq_slot': None,
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'power': 1e-3,
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'tx_power': 1e-3}
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trx_params = trx_mode_params(equipment, params['trx_type'], params['trx_mode'], True)
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params.update(trx_params)
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f_min = params['f_min']
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f_max_from_si = params['f_max']
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params['nb_channel'] = automatic_nch(f_min, f_max_from_si, params['spacing'])
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return PathRequest(**params)
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@pytest.mark.parametrize('power_dbm', [0, 1, -2, None])
|
|
@pytest.mark.parametrize('mode, slot_width', (['mode 1', 50e9], ['mode 2', 75e9]))
|
|
def test_initial_spectrum(mode, slot_width, power_dbm):
|
|
"""checks that propagation using the user defined spectrum identical to SI, gives same result as SI"""
|
|
# first propagate without any req.initial_spectrum attribute
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
mode, slot_width, power_dbm)
|
|
network = net_setup(equipment)
|
|
path = compute_constrained_path(network, req)
|
|
infos_expected = propagate(path, req, equipment)
|
|
# then creates req.initial_spectrum attribute exactly corresponding to -spectrum option files
|
|
temp = [{
|
|
"f_min": 191.35e12 + slot_width,
|
|
"f_max": 196.15e12 - slot_width,
|
|
"baud_rate": req.baud_rate,
|
|
"slot_width": slot_width,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40
|
|
}]
|
|
req.initial_spectrum = _spectrum_from_json(temp)
|
|
infos_actual = propagate(path, req, equipment)
|
|
print(infos_actual.frequency[0], infos_actual.frequency[-1])
|
|
print(infos_expected.frequency[0], infos_expected.frequency[-1])
|
|
|
|
assert_array_equal(infos_expected.frequency, infos_actual.frequency)
|
|
assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
|
|
assert_array_equal(infos_expected.slot_width, infos_actual.slot_width)
|
|
assert_allclose(infos_expected.signal, infos_actual.signal, rtol=1e-10)
|
|
assert_allclose(infos_expected.nli, infos_actual.nli, rtol=1e-10)
|
|
assert_allclose(infos_expected.ase, infos_actual.ase, rtol=1e-10)
|
|
assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
|
|
assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
|
|
assert_array_equal(infos_expected.pmd, infos_actual.pmd)
|
|
assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
|
|
assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
|
|
|
|
|
|
def test_initial_spectrum_not_identical():
|
|
"""checks that user defined spectrum overrides spectrum defined in SI
|
|
"""
|
|
# first propagate without any req.initial_spectrum attribute
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
'mode 1', 50e9, 0)
|
|
network = net_setup(equipment)
|
|
path = compute_constrained_path(network, req)
|
|
infos_expected = propagate(path, req, equipment)
|
|
# then creates req.initial_spectrum attribute exactly corresponding to -spectrum option files
|
|
temp = [{
|
|
"f_min": 191.4e12, # align f_min , f_max on Voyager f_min, f_mix and not SI !
|
|
"f_max": 196.1e12,
|
|
"baud_rate": 40e9,
|
|
"slot_width": 62.5e9,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40
|
|
}]
|
|
req.initial_spectrum = _spectrum_from_json(temp)
|
|
infos_actual = propagate(path, req, equipment)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.frequency, infos_actual.frequency)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.baud_rate, infos_actual.baud_rate)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.slot_width, infos_actual.slot_width)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.signal, infos_actual.signal)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.nli, infos_actual.nli)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.ase, infos_actual.ase)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.channel_number, infos_actual.channel_number)
|
|
assert_raises(AssertionError, assert_array_equal, infos_expected.number_of_channels, infos_actual.number_of_channels)
|
|
|
|
|
|
@pytest.mark.parametrize('equalization, target_value', [
|
|
('target_out_mWperSlotWidth', power_dbm_to_psd_mw_ghz(-20, 50e9)),
|
|
('target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 32e9))])
|
|
@pytest.mark.parametrize('power_dbm', [0, 2, -0.5])
|
|
def test_target_psd_or_psw(power_dbm, equalization, target_value):
|
|
"""checks that if target_out_mWperSlotWidth or target_psd_out_mWperGHz is defined, it is used as equalization
|
|
and it gives same result if computed target is the same
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
network = net_setup(equipment)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
'mode 1', 50e9, power_dbm)
|
|
path = compute_constrained_path(network, req)
|
|
infos_expected = propagate(path, req, equipment)
|
|
# change default equalization to power spectral density
|
|
delattr(equipment['Roadm']['default'], 'target_pch_out_db')
|
|
setattr(equipment['Roadm']['default'], equalization, target_value)
|
|
# create a second instance with this roadm settings,
|
|
network2 = net_setup(equipment)
|
|
path2 = compute_constrained_path(network2, req)
|
|
infos_actual = propagate(path2, req, equipment)
|
|
# since baudrate is the same, resulting propagation should be the same as for power equalization
|
|
assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
|
|
assert_array_equal(infos_expected.slot_width, infos_actual.slot_width)
|
|
assert_array_equal(infos_expected.signal, infos_actual.signal)
|
|
assert_array_equal(infos_expected.nli, infos_actual.nli)
|
|
assert_array_equal(infos_expected.ase, infos_actual.ase)
|
|
assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
|
|
assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
|
|
assert_array_equal(infos_expected.pmd, infos_actual.pmd)
|
|
assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
|
|
assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
|
|
|
|
|
|
def ref_network():
|
|
"""Create a network instance with a instance of propagated path"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
network = net_setup(equipment)
|
|
req0 = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
'mode 1', 50e9, 0)
|
|
path0 = compute_constrained_path(network, req0)
|
|
_ = propagate(path0, req0, equipment)
|
|
return network
|
|
|
|
|
|
@pytest.mark.parametrize('deltap', [0, +1.18, -0.5])
|
|
def test_target_psd_out_mwperghz_deltap(deltap):
|
|
"""checks that if target_psd_out_mWperGHz is defined, delta_p of amps is correctly updated
|
|
|
|
Power over 1.18dBm saturate amp with this test: TODO add a test on this saturation
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
network = net_setup(equipment, deltap)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
'mode 1', 50e9, deltap)
|
|
temp = [{
|
|
"f_min": 191.35e12, # align f_min , f_max on Voyager f_min, f_mix and not SI !
|
|
"f_max": 196.05e12,
|
|
"baud_rate": req.baud_rate,
|
|
"slot_width": 50e9,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40
|
|
}]
|
|
req.initial_spectrum = _spectrum_from_json(temp)
|
|
path = compute_constrained_path(network, req)
|
|
_ = propagate(path, req, equipment)
|
|
# check that gain of booster is changed accordingly whereas gain of preamp and ila is not (no saturation case)
|
|
boosters = ['east edfa in Brest_KLA to Quimper', 'east edfa in Lorient_KMA to Vannes_KBE']
|
|
ila_preamps = ['east edfa in Quimper to Lorient_KMA', 'west edfa in Lorient_KMA to Quimper',
|
|
'west edfa in Vannes_KBE to Lorient_KMA']
|
|
for amp in boosters + ila_preamps:
|
|
expected_amp = next(n for n in ref_network() if n.uid == amp)
|
|
actual_amp = next(n for n in network.nodes() if n.uid == amp)
|
|
expected_gain = expected_amp.pout_db - expected_amp.pin_db
|
|
actual_gain = actual_amp.pout_db - actual_amp.pin_db
|
|
print(actual_amp)
|
|
if amp in boosters:
|
|
assert expected_gain + deltap == pytest.approx(actual_gain, rel=1e-3)
|
|
if amp in ila_preamps:
|
|
assert expected_gain == pytest.approx(actual_gain, rel=1e-3)
|
|
|
|
|
|
@pytest.mark.parametrize('equalization', ['target_psd_out_mWperGHz', 'target_out_mWperSlotWidth'])
|
|
@pytest.mark.parametrize('case', ['SI', 'nodes'])
|
|
@pytest.mark.parametrize('deltap', [0, +2, -0.5])
|
|
@pytest.mark.parametrize('target', [-20, -21, -18])
|
|
@pytest.mark.parametrize('mode, slot_width', (['mode 1', 50e9], ['mode 2', 75e9]))
|
|
def test_equalization(case, deltap, target, mode, slot_width, equalization):
|
|
"""check that power target on roadm is correct for these cases; check on booster
|
|
- SI : target_pch_out_db / target_psd_out_mWperGHz
|
|
- node : target_pch_out_db / target_psd_out_mWperGHz
|
|
- per degree : target_pch_out_db / target_psd_out_mWperGHz
|
|
for these cases with and without power from user
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
setattr(equipment['Roadm']['default'], 'target_pch_out_db', target)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Rennes_STA', False,
|
|
['east edfa in Brest_KLA to Quimper', 'roadm Lannion_CAS', 'trx Rennes_STA'],
|
|
['STRICT', 'STRICT', 'STRICT'],
|
|
mode, slot_width, deltap)
|
|
roadms = ['roadm Brest_KLA', 'roadm Lorient_KMA', 'roadm Lannion_CAS', 'roadm Rennes_STA']
|
|
# degree = {'roadm Brest_KLA': 'east edfa in Brest_KLA to Quimper',
|
|
# 'roadm Lorient_KMA': 'east edfa in Lorient_KMA to Loudeac'}
|
|
# boosters = ['east edfa in Brest_KLA to Quimper', 'east edfa in Lorient_KMA to Loudeac',
|
|
# 'east edfa in Lannion_CAS to Stbrieuc']
|
|
target_psd = power_dbm_to_psd_mw_ghz(target, 32e9)
|
|
if case == 'SI':
|
|
delattr(equipment['Roadm']['default'], 'target_pch_out_db')
|
|
setattr(equipment['Roadm']['default'], equalization, target_psd)
|
|
network = net_setup(equipment)
|
|
elif case == 'nodes':
|
|
json_data = load_json(NETWORK_FILENAME)
|
|
for el in json_data['elements']:
|
|
if el['uid'] in roadms:
|
|
el['params'] = {equalization: target_psd}
|
|
network = network_from_json(json_data, equipment)
|
|
spectrum = equipment['SI']['default']
|
|
p_db = spectrum.power_dbm
|
|
nb_channels = automatic_nch(spectrum.f_min, spectrum.f_max, spectrum.spacing)
|
|
build_network(network, equipment, pathrequest(p_db, nb_channels))
|
|
build_oms_list(network, equipment)
|
|
# check that nodes not in roadms have target_pch_out_db not None
|
|
pw_roadms = [r for r in network.nodes() if r.uid not in roadms and isinstance(r, Roadm)]
|
|
for roadm in pw_roadms:
|
|
assert roadm.target_psd_out_mWperGHz is None
|
|
assert roadm.target_pch_out_dbm == target
|
|
for roadm in [r for r in network.nodes() if r.uid in roadms and isinstance(r, Roadm)]:
|
|
assert roadm.target_pch_out_dbm is None
|
|
assert getattr(roadm, equalization) == target_psd
|
|
path = compute_constrained_path(network, req)
|
|
si = create_input_spectral_information(
|
|
f_min=req.f_min, f_max=req.f_max, roll_off=req.roll_off, baud_rate=req.baud_rate,
|
|
spacing=req.spacing, tx_osnr=req.tx_osnr, tx_power=req.power)
|
|
for i, el in enumerate(path):
|
|
if isinstance(el, Roadm):
|
|
si = el(si, degree=path[i + 1].uid, from_degree=path[i - 1].uid)
|
|
if case in ['SI', 'nodes', 'degrees']:
|
|
if equalization == 'target_psd_out_mWperGHz':
|
|
assert_allclose(power_dbm_to_psd_mw_ghz(watt2dbm(si.signal + si.ase + si.nli), si.baud_rate),
|
|
target_psd, rtol=1e-3)
|
|
if equalization == 'target_out_mWperSlotWidth':
|
|
assert_allclose(power_dbm_to_psd_mw_ghz(watt2dbm(si.signal + si.ase + si.nli), si.slot_width),
|
|
target_psd, rtol=1e-3)
|
|
else:
|
|
si = el(si)
|
|
print(el.uid)
|
|
|
|
|
|
@pytest.mark.parametrize('req_power', [0, 2, -1.5])
|
|
def test_power_option(req_power):
|
|
"""check that --po option adds correctly power with spectral information
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
setattr(equipment['Roadm']['default'], 'target_pch_out_db', None)
|
|
setattr(equipment['Roadm']['default'], 'target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 32e9))
|
|
network = net_setup(equipment)
|
|
req = create_voyager_req(equipment, 'trx Brest_KLA', 'trx Vannes_KBE', False, ['trx Vannes_KBE'], ['STRICT'],
|
|
'mode 1', 50e9, req_power)
|
|
path = compute_constrained_path(network, req)
|
|
infos_expected = propagate(path, req, equipment)
|
|
|
|
temp = [{
|
|
"f_min": 191.4e12, # align f_min , f_max on Voyager f_min, f_max and not SI !
|
|
"f_max": 196.1e12,
|
|
"baud_rate": req.baud_rate,
|
|
"slot_width": 50e9,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40
|
|
}]
|
|
req.initial_spectrum = _spectrum_from_json(temp)
|
|
network2 = net_setup(equipment)
|
|
path2 = compute_constrained_path(network2, req)
|
|
infos_actual = propagate(path2, req, equipment)
|
|
assert_array_equal(infos_expected.baud_rate, infos_actual.baud_rate)
|
|
assert_array_equal(infos_expected.slot_width, infos_actual.slot_width)
|
|
assert_allclose(infos_expected.signal, infos_actual.signal, rtol=1e-10)
|
|
assert_allclose(infos_expected.nli, infos_actual.nli, rtol=1e-10)
|
|
assert_allclose(infos_expected.ase, infos_actual.ase, rtol=1e-10)
|
|
assert_array_equal(infos_expected.roll_off, infos_actual.roll_off)
|
|
assert_array_equal(infos_expected.chromatic_dispersion, infos_actual.chromatic_dispersion)
|
|
assert_array_equal(infos_expected.pmd, infos_actual.pmd)
|
|
assert_array_equal(infos_expected.channel_number, infos_actual.channel_number)
|
|
assert_array_equal(infos_expected.number_of_channels, infos_actual.number_of_channels)
|
|
|
|
|
|
def transceiver(slot_width, value):
|
|
return {
|
|
"type_variety": "test_offset",
|
|
"frequency": {
|
|
"min": 191.3e12,
|
|
"max": 196.1e12
|
|
},
|
|
"mode": [
|
|
{
|
|
"format": "mode 1",
|
|
"baud_rate": 64e9,
|
|
"OSNR": 18,
|
|
"bit_rate": 100e9,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40,
|
|
"min_spacing": 75e9,
|
|
"cost": 1
|
|
},
|
|
{
|
|
"format": "mode 3",
|
|
"baud_rate": 64e9,
|
|
"OSNR": 18,
|
|
"bit_rate": 100e9,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40,
|
|
"min_spacing": slot_width,
|
|
"equalization_offset_db": value,
|
|
"cost": 1
|
|
}
|
|
]
|
|
}
|
|
|
|
|
|
def some_requests():
|
|
route = {
|
|
"route-object-include-exclude": [
|
|
{
|
|
"explicit-route-usage": "route-include-ero",
|
|
"index": 0,
|
|
"num-unnum-hop": {
|
|
"node-id": "trx Brest_KLA",
|
|
"link-tp-id": "link-tp-id is not used",
|
|
"hop-type": "STRICT"
|
|
}
|
|
},
|
|
{
|
|
"explicit-route-usage": "route-include-ero",
|
|
"index": 1,
|
|
"num-unnum-hop": {
|
|
"node-id": "trx Vannes_KBE",
|
|
"link-tp-id": "link-tp-id is not used",
|
|
"hop-type": "STRICT"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
return {
|
|
"path-request": [{
|
|
"request-id": "2",
|
|
"source": "trx Brest_KLA",
|
|
"destination": "trx Vannes_KBE",
|
|
"src-tp-id": "trx Brest_KLA",
|
|
"dst-tp-id": "trx Vannes_KBE",
|
|
"bidirectional": False,
|
|
"path-constraints": {
|
|
"te-bandwidth": {
|
|
"technology": "flexi-grid",
|
|
"trx_type": "test_offset",
|
|
"trx_mode": "mode 1",
|
|
"spacing": 75000000000.0,
|
|
"path_bandwidth": 100000000000.0
|
|
}
|
|
},
|
|
"explicit-route-objects": route
|
|
}, {
|
|
"request-id": "3",
|
|
"source": "trx Brest_KLA",
|
|
"destination": "trx Vannes_KBE",
|
|
"src-tp-id": "trx Brest_KLA",
|
|
"dst-tp-id": "trx Vannes_KBE",
|
|
"bidirectional": False,
|
|
"path-constraints": {
|
|
"te-bandwidth": {
|
|
"technology": "flexi-grid",
|
|
"trx_type": "test_offset",
|
|
"trx_mode": "mode 3",
|
|
"spacing": 87500000000.0,
|
|
"path_bandwidth": 100000000000.0
|
|
}
|
|
},
|
|
"explicit-route-objects": route
|
|
}, {
|
|
"request-id": "4",
|
|
"source": "trx Brest_KLA",
|
|
"destination": "trx Vannes_KBE",
|
|
"src-tp-id": "trx Brest_KLA",
|
|
"dst-tp-id": "trx Vannes_KBE",
|
|
"bidirectional": False,
|
|
"path-constraints": {
|
|
"te-bandwidth": {
|
|
"technology": "flexi-grid",
|
|
"trx_type": "test_offset",
|
|
"trx_mode": "mode 1",
|
|
"spacing": 87500000000.0,
|
|
"path_bandwidth": 100000000000.0
|
|
}
|
|
},
|
|
"explicit-route-objects": route
|
|
}]
|
|
}
|
|
|
|
|
|
@pytest.mark.parametrize('slot_width, value', [(75e9, lin2db(75 / 87.5)),
|
|
(87.5e9, lin2db(75 / 87.5))])
|
|
def test_power_offset_trx_equalization_psw(slot_width, value):
|
|
"""Check that the equalization with the offset is giving the same result as with reference slot_width
|
|
Check that larger slot width but no offset takes larger slot width for equalization
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
trx = transceiver(slot_width, value)
|
|
equipment['Transceiver'][trx['type_variety']] = Transceiver(**trx)
|
|
setattr(equipment['Roadm']['default'], 'target_pch_out_db', None)
|
|
setattr(equipment['Roadm']['default'], 'target_out_mWperSlotWidth', power_dbm_to_psd_mw_ghz(-20, 50e9))
|
|
network = net_setup(equipment)
|
|
json_data = some_requests()
|
|
ref_request, request, other = requests_from_json(json_data, equipment)
|
|
# ref_request (_expected) has no offset, equalization on 75GH basis
|
|
path_expected = compute_constrained_path(network, ref_request)
|
|
_ = propagate(path_expected, ref_request, equipment)
|
|
roadm1_expected = deepcopy(path_expected[1])
|
|
# request has an offset either defined in power and a larger slot width.
|
|
# The defined offset is "equalize as if it was a 75 GHz channel" although slot_width is 87.5GHz
|
|
path = compute_constrained_path(network, request)
|
|
_ = propagate(path, request, equipment)
|
|
roadm1 = deepcopy(path[1])
|
|
# the other request has a larger slot width (spacing) but no offset. so equalization uses this slot width
|
|
path_other = compute_constrained_path(network, other)
|
|
_ = propagate(path, other, equipment)
|
|
roadm1_other = path_other[1]
|
|
# check the first frequency since all cariers have the same equalization
|
|
# Check that the power is equalized as if it was for a 75GHz channel (mode 1) instead of a 87.5GHz
|
|
assert roadm1.pch_out_dbm[0] == roadm1_expected.pch_out_dbm[0]
|
|
# Check that equalization instead uses 87.5GHz basis
|
|
assert roadm1_other.pch_out_dbm[0] == roadm1_expected.pch_out_dbm[0] + lin2db(87.5 / 75)
|
|
|
|
|
|
@pytest.mark.parametrize('slot_width, value', [(75e9, lin2db(75 / 50)),
|
|
(87.5e9, lin2db(75 / 50))])
|
|
def test_power_offset_trx_equalization_p(slot_width, value):
|
|
"""Check that the constant power equalization with the offset is applied
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
trx = transceiver(slot_width, value)
|
|
equipment['Transceiver'][trx['type_variety']] = Transceiver(**trx)
|
|
setattr(equipment['Roadm']['default'], 'target_pch_out_db', -20)
|
|
network = net_setup(equipment)
|
|
json_data = some_requests()
|
|
ref_request, request, _ = requests_from_json(json_data, equipment)
|
|
path_expected = compute_constrained_path(network, ref_request)
|
|
_ = propagate(path_expected, ref_request, equipment)
|
|
roadm1_expected = deepcopy(path_expected[1])
|
|
path = compute_constrained_path(network, request)
|
|
_ = propagate(path, request, equipment)
|
|
roadm1 = deepcopy(path[1])
|
|
assert roadm1.pch_out_dbm[0] == roadm1_expected.pch_out_dbm[0] + lin2db(75 / 50)
|
|
|
|
|
|
@pytest.mark.parametrize('equalization, target_value',
|
|
[('target_pch_out_db', -20),
|
|
('target_psd_out_mWperGHz', power_dbm_to_psd_mw_ghz(-20, 64e9)),
|
|
('target_out_mWperSlotWidth', power_dbm_to_psd_mw_ghz(-20, 50e9))])
|
|
@pytest.mark.parametrize('slot_width, value, expected_mode', [(75e9, 3.0, 'mode 3')])
|
|
def test_power_offset_automatic_mode_selection(slot_width, value, equalization,
|
|
target_value, expected_mode):
|
|
"""Check that the same result is obtained if the mode is user defined or if it is
|
|
automatically selected
|
|
"""
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
trx = transceiver(slot_width, value)
|
|
equipment['Transceiver'][trx['type_variety']] = Transceiver(**trx)
|
|
setattr(equipment['Roadm']['default'], 'target_pch_out_db', None)
|
|
setattr(equipment['Roadm']['default'], equalization, target_value)
|
|
network = net_setup(equipment)
|
|
route = {
|
|
"route-object-include-exclude": [
|
|
{
|
|
"explicit-route-usage": "route-include-ero",
|
|
"index": 0,
|
|
"num-unnum-hop": {
|
|
"node-id": "trx Brest_KLA",
|
|
"link-tp-id": "link-tp-id is not used",
|
|
"hop-type": "STRICT"
|
|
}
|
|
},
|
|
{
|
|
"explicit-route-usage": "route-include-ero",
|
|
"index": 1,
|
|
"num-unnum-hop": {
|
|
"node-id": "trx Vannes_KBE",
|
|
"link-tp-id": "link-tp-id is not used",
|
|
"hop-type": "STRICT"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
json_data = {
|
|
"path-request": [{
|
|
"request-id": "imposed_mode",
|
|
"source": "trx Brest_KLA",
|
|
"destination": "trx Vannes_KBE",
|
|
"src-tp-id": "trx Brest_KLA",
|
|
"dst-tp-id": "trx Vannes_KBE",
|
|
"bidirectional": False,
|
|
"path-constraints": {
|
|
"te-bandwidth": {
|
|
"technology": "flexi-grid",
|
|
"trx_type": "test_offset",
|
|
"trx_mode": "mode 3",
|
|
"spacing": 75000000000.0,
|
|
"path_bandwidth": 100000000000.0
|
|
}
|
|
},
|
|
"explicit-route-objects": route
|
|
}, {
|
|
"request-id": "free_mode",
|
|
"source": "trx Brest_KLA",
|
|
"destination": "trx Vannes_KBE",
|
|
"src-tp-id": "trx Brest_KLA",
|
|
"dst-tp-id": "trx Vannes_KBE",
|
|
"bidirectional": False,
|
|
"path-constraints": {
|
|
"te-bandwidth": {
|
|
"technology": "flexi-grid",
|
|
"trx_type": "test_offset",
|
|
"spacing": 75000000000.0,
|
|
"path_bandwidth": 100000000000.0
|
|
}
|
|
},
|
|
"explicit-route-objects": route
|
|
}]}
|
|
imposed_req, free_req, = requests_from_json(json_data, equipment)
|
|
assert free_req.tsp_mode is None
|
|
path_expected = compute_constrained_path(network, imposed_req)
|
|
_ = propagate(path_expected, imposed_req, equipment)
|
|
path = compute_constrained_path(network, free_req)
|
|
_, mode = propagate_and_optimize_mode(path, free_req, equipment)
|
|
assert mode['format'] == expected_mode
|
|
assert_allclose(path_expected[-1].snr_01nm, path[-1].snr_01nm, rtol=1e-5)
|
|
|
|
|
|
@pytest.mark.parametrize('tx_power_dbm', [-10, -8, 0, 10])
|
|
def test_tx_power(tx_power_dbm):
|
|
"""If carrier add power is below equalization target + ROADM add max loss, then equalizatio
|
|
can not be applied.
|
|
"""
|
|
json_data = load_json(NETWORK_FILENAME)
|
|
for el in json_data['elements']:
|
|
if el['uid'] == 'roadm Lannion_CAS':
|
|
el['type_variety'] = 'example_detailed_impairments'
|
|
equipment = load_equipment(EQPT_FILENAME, EXTRA_CONFIGS)
|
|
network = network_from_json(json_data, equipment)
|
|
default_spectrum = equipment['SI']['default']
|
|
p_db = default_spectrum.power_dbm
|
|
nb_channels = automatic_nch(default_spectrum.f_min, default_spectrum.f_max, default_spectrum.spacing)
|
|
build_network(network, equipment, pathrequest(p_db, nb_channels))
|
|
build_oms_list(network, equipment)
|
|
expected_roadm_lannion = {
|
|
"uid": "roadm Lannion_CAS",
|
|
"type": "Roadm",
|
|
"type_variety": "example_detailed_impairments",
|
|
"params": {
|
|
"restrictions": {
|
|
"preamp_variety_list": [],
|
|
"booster_variety_list": []
|
|
},
|
|
'per_degree_pch_out_db': {'east edfa in Lannion_CAS to Corlay': -20,
|
|
'east edfa in Lannion_CAS to Morlaix': -20,
|
|
'east edfa in Lannion_CAS to Stbrieuc': -20},
|
|
"target_pch_out_db": -20
|
|
},
|
|
'metadata': {
|
|
'location': {
|
|
'city': 'Lannion_CAS',
|
|
'latitude': 2.0,
|
|
'longitude': 0.0,
|
|
'region': 'RLD'
|
|
}
|
|
}
|
|
}
|
|
roadm = next(n for n in network.nodes() if n.uid == 'roadm Lannion_CAS')
|
|
assert roadm.to_json == expected_roadm_lannion
|
|
spectrum = _spectrum_from_json([
|
|
{
|
|
"f_min": 191.35e12,
|
|
"f_max": 191.35e12,
|
|
"baud_rate": 32e9,
|
|
"slot_width": 50e9,
|
|
"power_dbm": 0,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40
|
|
},
|
|
{
|
|
"f_min": 193.15e12,
|
|
"f_max": 193.15e12,
|
|
"baud_rate": 32e9,
|
|
"slot_width": 50e9,
|
|
"power_dbm": 0,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40,
|
|
"tx_power_dbm": tx_power_dbm
|
|
},
|
|
{
|
|
"f_min": 193.2e12,
|
|
"f_max": 193.2e12,
|
|
"baud_rate": 32e9,
|
|
"slot_width": 50e9,
|
|
"power_dbm": 0,
|
|
"roll_off": 0.15,
|
|
"tx_osnr": 40}])
|
|
power = 1.0e-3
|
|
si = carriers_to_spectral_information(initial_spectrum=spectrum,
|
|
power=power)
|
|
si = roadm(si, "east edfa in Lannion_CAS to Corlay", "trx Lannion_CAS")
|
|
# Checks that if tx_power on add port is below min required power, its equalization target can not be met
|
|
add_max_loss = next(e for e in getattr(equipment['Roadm']['example_detailed_impairments'], 'roadm-path-impairments')
|
|
if 'roadm-add-path' in e)['roadm-add-path'][0]['roadm-maxloss']
|
|
min_required_add_power = -20 + add_max_loss
|
|
power_reduction = max(0, min_required_add_power - tx_power_dbm)
|
|
assert_allclose(si.signal, dbm2watt(array([-20, -20 - power_reduction, -20])), rtol=1e-5)
|
|
path = ['trx Lannion_CAS',
|
|
'roadm Lannion_CAS',
|
|
'east edfa in Lannion_CAS to Stbrieuc',
|
|
'fiber (Lannion_CAS → Stbrieuc)-F056',
|
|
'east edfa in Stbrieuc to Rennes_STA',
|
|
'fiber (Stbrieuc → Rennes_STA)-F057',
|
|
'west edfa in Rennes_STA to Stbrieuc',
|
|
'roadm Rennes_STA',
|
|
'trx Rennes_STA']
|
|
|
|
si = carriers_to_spectral_information(initial_spectrum=spectrum,
|
|
power=power)
|
|
for i, uid in enumerate(path):
|
|
node = next(n for n in network.nodes() if n.uid == uid)
|
|
if isinstance(node, Roadm):
|
|
si = node(si, path[i + 1], path[i - 1])
|
|
else:
|
|
si = node(si)
|
|
assert_allclose(watt2dbm(si.signal + si.ase + si.nli), array([-20, -20, -20]), rtol=1e-5)
|