cn_470_510_26_a_rp2_v1_0_3.go

// Copyright © 2021 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package band

import "go.thethings.network/lorawan-stack/v3/pkg/ttnpb"

// CN_470_510_26_A_RP2_v1_0_3 is the band definition for CN470-510 26MHz antenna, type A in the RP002-1.0.3 specification.
var CN_470_510_26_A_RP2_v1_0_3 = Band{
	ID: CN_470_510_26_A,

	SupportsDynamicADR: true,

	MaxUplinkChannels: 48,
	UplinkChannels:    cn47051026AUplinkChannels(1),

	MaxDownlinkChannels: 24,
	DownlinkChannels:    cn47051026ADownlinkChannels(1),

	// See IEEE 11-11/0972r0
	SubBands: []SubBandParameters{
		{
			MinFrequency: 470000000,
			MaxFrequency: 510000000,
			DutyCycle:    1,
			MaxEIRP:      17.0 + eirpDelta,
		},
	},

	DataRates: map[ttnpb.DataRateIndex]DataRate{
		ttnpb.DataRateIndex_DATA_RATE_1: makeLoRaDataRate(11, 125000, Cr4_5, makeConstMaxMACPayloadSizeFunc(31)),
		ttnpb.DataRateIndex_DATA_RATE_2: makeLoRaDataRate(10, 125000, Cr4_5, makeConstMaxMACPayloadSizeFunc(94)),
		ttnpb.DataRateIndex_DATA_RATE_3: makeLoRaDataRate(9, 125000, Cr4_5, makeConstMaxMACPayloadSizeFunc(172)),
		ttnpb.DataRateIndex_DATA_RATE_4: makeLoRaDataRate(8, 125000, Cr4_5, makeConstMaxMACPayloadSizeFunc(250)),
		ttnpb.DataRateIndex_DATA_RATE_5: makeLoRaDataRate(7, 125000, Cr4_5, makeConstMaxMACPayloadSizeFunc(250)),
		ttnpb.DataRateIndex_DATA_RATE_6: makeLoRaDataRate(7, 500000, Cr4_5, makeConstMaxMACPayloadSizeFunc(250)),
		ttnpb.DataRateIndex_DATA_RATE_7: makeFSKDataRate(50000, makeConstMaxMACPayloadSizeFunc(250)),
	},
	MaxADRDataRateIndex: ttnpb.DataRateIndex_DATA_RATE_5,
	StrictCodingRate:    true,

	DefaultMaxEIRP: 19.15,
	TxOffset: []float32{
		0,
		-2,
		-4,
		-6,
		-8,
		-10,
		-12,
		-14,
	},

	Rx1Channel: channelIndexModulo(24),
	Rx1DataRate: func(idx ttnpb.DataRateIndex, offset ttnpb.DataRateOffset, _ bool) (ttnpb.DataRateIndex, error) {
		if idx > ttnpb.DataRateIndex_DATA_RATE_5 {
			return 0, errDataRateIndexTooHigh.WithAttributes("max", 5)
		}
		if offset > 5 {
			return 0, errDataRateOffsetTooHigh.WithAttributes("max", 5)
		}
		// Unchanged from the pre-RP2 CN470-510 band definition.
		return cn470510DownlinkDRTable[idx][offset], nil
	},

	GenerateChMasks: generateChMask48,
	ParseChMask:     parseChMask48,

	DefaultRx2Parameters: Rx2Parameters{ttnpb.DataRateIndex_DATA_RATE_0, 492500000},

	Beacon: Beacon{
		DataRateIndex: ttnpb.DataRateIndex_DATA_RATE_2,
		CodingRate:    Cr4_5,
		Frequencies:   cn47051026ABeaconFrequencies,
	},
	PingSlotFrequencies: cn47051026ABeaconFrequencies,

	FreqMultiplier:   100,
	ImplementsCFList: true,
	CFListType:       ttnpb.CFListType_CHANNEL_MASKS,

	SharedParameters: universalSharedParameters,
}