/
band_us902_928.go
506 lines (471 loc) · 13 KB
/
band_us902_928.go
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package band
import (
"encoding/binary"
"sort"
"time"
"github.com/brocaar/lorawan"
)
type us902Band struct {
band
}
func (b *us902Band) Name() string {
return "US915"
}
func (b *us902Band) GetDefaults() Defaults {
return Defaults{
RX2Frequency: 923300000,
RX2DataRate: 8,
ReceiveDelay1: time.Second,
ReceiveDelay2: time.Second * 2,
JoinAcceptDelay1: time.Second * 5,
JoinAcceptDelay2: time.Second * 6,
}
}
func (b *us902Band) GetDownlinkTXPower(freq uint32) int {
return 20
}
func (b *us902Band) GetDefaultMaxUplinkEIRP() float32 {
return 30
}
func (b *us902Band) GetPingSlotFrequency(devAddr lorawan.DevAddr, beaconTime time.Duration) (uint32, error) {
downlinkChannel := (int(binary.BigEndian.Uint32(devAddr[:])) + int(beaconTime/(128*time.Second))) % 8
// Beaconing is performed on the same channel that normal downstream traffic as
// defined in the Class A specification.
return b.downlinkChannels[downlinkChannel].Frequency, nil
}
func (b *us902Band) GetRX1ChannelIndexForUplinkChannelIndex(uplinkChannel int) (int, error) {
return uplinkChannel % 8, nil
}
func (b *us902Band) GetRX1FrequencyForUplinkFrequency(uplinkFrequency uint32) (uint32, error) {
uplinkChan, err := b.GetUplinkChannelIndex(uplinkFrequency, true)
if err != nil {
return 0, err
}
rx1Chan, err := b.GetRX1ChannelIndexForUplinkChannelIndex(uplinkChan)
if err != nil {
return 0, err
}
return b.downlinkChannels[rx1Chan].Frequency, nil
}
func (b *us902Band) GetLinkADRReqPayloadsForEnabledUplinkChannelIndices(deviceEnabledChannels []int) []lorawan.LinkADRReqPayload {
payloadsA := b.band.GetLinkADRReqPayloadsForEnabledUplinkChannelIndices(deviceEnabledChannels)
enabledChannels := b.GetEnabledUplinkChannelIndices()
sort.Ints(enabledChannels)
out := []lorawan.LinkADRReqPayload{
{Redundancy: lorawan.Redundancy{ChMaskCntl: 7}}, // All 125 kHz OFF ChMask applies to channels 64 to 71
}
chMaskCntl := -1
for _, c := range enabledChannels {
// use the ChMask of the first LinkADRReqPayload, besides
// turning off all 125 kHz this payload contains the ChMask
// for the last block of channels.
if c >= 64 {
out[0].ChMask[c%16] = true
continue
}
if c/16 != chMaskCntl {
chMaskCntl = c / 16
pl := lorawan.LinkADRReqPayload{
Redundancy: lorawan.Redundancy{
ChMaskCntl: uint8(chMaskCntl),
},
}
// set the channel mask for this block
for _, ec := range enabledChannels {
if ec >= chMaskCntl*16 && ec < (chMaskCntl+1)*16 {
pl.ChMask[ec%16] = true
}
}
out = append(out, pl)
}
}
if len(payloadsA) < len(out) {
return payloadsA
}
return out
}
func (b *us902Band) GetEnabledUplinkChannelIndicesForLinkADRReqPayloads(deviceEnabledChannels []int, pls []lorawan.LinkADRReqPayload) ([]int, error) {
chMask := make([]bool, len(b.uplinkChannels))
for _, c := range deviceEnabledChannels {
// make sure that we don't exceed the chMask length. in case we exceed
// we ignore the channel as it might have been removed from the network
if c < len(chMask) {
chMask[c] = true
}
}
for _, pl := range pls {
if pl.Redundancy.ChMaskCntl == 6 || pl.Redundancy.ChMaskCntl == 7 {
for i := 0; i < 64; i++ {
if pl.Redundancy.ChMaskCntl == 6 {
chMask[i] = true
} else {
chMask[i] = false
}
}
for i, cm := range pl.ChMask[0:8] {
chMask[64+i] = cm
}
} else {
for i, enabled := range pl.ChMask {
if int(pl.Redundancy.ChMaskCntl*16)+i >= len(chMask) && !enabled {
continue
}
if int(pl.Redundancy.ChMaskCntl*16)+i >= len(chMask) {
return nil, ErrChannelDoesNotExist
}
chMask[int(pl.Redundancy.ChMaskCntl*16)+i] = enabled
}
}
}
// turn the chMask into a slice of enabled channel numbers
var out []int
for i, enabled := range chMask {
if enabled {
out = append(out, i)
}
}
return out, nil
}
func (b *us902Band) ImplementsTXParamSetup(protocolVersion string) bool {
return false
}
func newUS902Band(repeaterCompatible bool) (Band, error) {
b := us902Band{
band: band{
dataRates: map[int]DataRate{
0: {Modulation: LoRaModulation, SpreadFactor: 10, Bandwidth: 125, uplink: true},
1: {Modulation: LoRaModulation, SpreadFactor: 9, Bandwidth: 125, uplink: true},
2: {Modulation: LoRaModulation, SpreadFactor: 8, Bandwidth: 125, uplink: true},
3: {Modulation: LoRaModulation, SpreadFactor: 7, Bandwidth: 125, uplink: true},
4: {Modulation: LoRaModulation, SpreadFactor: 8, Bandwidth: 500, uplink: true},
5: {Modulation: LRFHSSModulation, CodingRate: "1/3", OccupiedChannelWidth: 1523000, uplink: true, downlink: false},
6: {Modulation: LRFHSSModulation, CodingRate: "4/6", OccupiedChannelWidth: 1523000, uplink: true, downlink: false},
// 7
8: {Modulation: LoRaModulation, SpreadFactor: 12, Bandwidth: 500, downlink: true},
9: {Modulation: LoRaModulation, SpreadFactor: 11, Bandwidth: 500, downlink: true},
10: {Modulation: LoRaModulation, SpreadFactor: 10, Bandwidth: 500, downlink: true},
11: {Modulation: LoRaModulation, SpreadFactor: 9, Bandwidth: 500, downlink: true},
12: {Modulation: LoRaModulation, SpreadFactor: 8, Bandwidth: 500, downlink: true},
13: {Modulation: LoRaModulation, SpreadFactor: 7, Bandwidth: 500, downlink: true},
},
rx1DataRateTable: map[int][]int{
0: {10, 9, 8, 8},
1: {11, 10, 9, 8},
2: {12, 11, 10, 9},
3: {13, 12, 11, 10},
4: {13, 13, 12, 11},
5: {10, 9, 8, 8},
6: {11, 10, 9, 8},
// 7
8: {8, 8, 8, 8},
9: {9, 8, 8, 8},
10: {10, 9, 8, 8},
11: {11, 10, 9, 8},
12: {12, 11, 10, 9},
13: {13, 12, 11, 10},
},
txPowerOffsets: []int{
0,
-2,
-4,
-6,
-8,
-10,
-12,
-14,
-16,
-18,
-20,
},
uplinkChannels: make([]Channel, 72),
downlinkChannels: make([]Channel, 8),
},
}
if repeaterCompatible {
b.band.maxPayloadSizePerDR = map[string]map[string]map[int]MaxPayloadSize{
LoRaWAN_1_0_0: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.0
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 137, N: 129},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
LoRaWAN_1_0_1: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.1
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 134, N: 126},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
LoRaWAN_1_0_2: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.2A, LoRaWAN 1.0.2B
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
LoRaWAN_1_0_3: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.3A
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
LoRaWAN_1_1_0: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.1.0A, LoRaWAN 1.1.0B
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
latest: map[string]map[int]MaxPayloadSize{
RegParamRevRP002_1_0_0: map[int]MaxPayloadSize{
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 230, N: 222},
4: {M: 230, N: 222},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
RegParamRevRP002_1_0_1: map[int]MaxPayloadSize{
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 230, N: 222},
4: {M: 230, N: 222},
// 5-7
8: {M: 41, N: 33},
9: {M: 117, N: 109},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
latest: map[int]MaxPayloadSize{ // RP002-1.0.2, RP002-1.0.3
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 230, N: 222},
4: {M: 230, N: 222},
5: {M: 58, N: 50},
6: {M: 133, N: 125},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 230, N: 222},
11: {M: 230, N: 222},
12: {M: 230, N: 222},
13: {M: 230, N: 222},
},
},
}
} else {
b.band.maxPayloadSizePerDR = map[string]map[string]map[int]MaxPayloadSize{
LoRaWAN_1_0_0: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.0
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 137, N: 129},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
LoRaWAN_1_0_1: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.1
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 134, N: 126},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
LoRaWAN_1_0_2: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.2A, LoRaWAN 1.0.2B
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
LoRaWAN_1_0_3: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.0.3A
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
LoRaWAN_1_1_0: map[string]map[int]MaxPayloadSize{
latest: map[int]MaxPayloadSize{ // LoRaWAN 1.1.0A, LoRaWAN 1.1.0B
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
latest: map[string]map[int]MaxPayloadSize{
RegParamRevRP002_1_0_0: map[int]MaxPayloadSize{
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
RegParamRevRP002_1_0_1: map[int]MaxPayloadSize{
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
// 5-7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
latest: map[int]MaxPayloadSize{ // RP002-1.0.2, RP002-1.0.3
0: {M: 19, N: 11},
1: {M: 61, N: 53},
2: {M: 133, N: 125},
3: {M: 250, N: 242},
4: {M: 250, N: 242},
5: {M: 58, N: 50},
6: {M: 133, N: 125},
// 7
8: {M: 61, N: 53},
9: {M: 137, N: 129},
10: {M: 250, N: 242},
11: {M: 250, N: 242},
12: {M: 250, N: 242},
13: {M: 250, N: 242},
},
},
}
}
// initialize uplink channel 0 - 63
for i := uint32(0); i < 64; i++ {
b.uplinkChannels[i] = Channel{
Frequency: 902300000 + (i * 200000),
MinDR: 0,
MaxDR: 3,
enabled: true,
}
}
// initialize uplink channel 64 - 71
for i := uint32(0); i < 8; i++ {
b.uplinkChannels[i+64] = Channel{
Frequency: 903000000 + (i * 1600000),
MinDR: 4,
MaxDR: 6,
enabled: true,
}
}
// initialize downlink channel 0 - 7
for i := uint32(0); i < 8; i++ {
b.downlinkChannels[i] = Channel{
Frequency: 923300000 + (i * 600000),
MinDR: 8,
MaxDR: 13,
enabled: true,
}
}
return &b, nil
}