Santiago, Chile


(Patricio Gallardo Puelma) #1

Hello there,
I am looking into creating a Lorawan Network in Santiago, Chile, which could later be used to implement IoT applications in different areas.
Who can kindly give some advice where to start looking for information regarding the implementation plan, hardware, issues, resources, teams, etc.
Thanks very much

Patricio Gallardo P.
patricio.gallardo@innovosen.cl
Cel +56994691778
www.innovosen.cl


(Andres Wagner) #2

Hola Patricio! Nosotros nos estamos sumando a TTN. ÂżCĂłmo te ha ido con LoRaWAN?

Saludos,
Andrés


(Felipe Astroza) #3

Hola @awagner,

Que frecuencias estas usando para tu GW?

saludos


(Andres Wagner) #4

We are using the US config: US902-928. What has been your experience with LoRaWAN so far?


(Felipe Astroza) #6

@awagner echale un vistazo a esto

https://www.thethingsnetwork.org/community/santiago/post/subtel-y-frecuencias-disponibles


(Andres Wagner) #7

Excellent contribution Patricio! A pity that part of the range has been tendered. What do you think if we assemble and publish a CL_local_conf.json for Chile?


(Andres Wagner) #8

Hi Patricio,
This is the frequency we configured. Any comments?

INFO: radio 0 enabled (type SX1257), center frequency 921500000, RSSI offset -166.000000, tx enabled 1
INFO: radio 1 enabled (type SX1257), center frequency 922300000, RSSI offset -166.000000, tx enabled 0
INFO: Lora multi-SF channel 0> radio 0, IF -300000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 1> radio 0, IF -100000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 2> radio 0, IF 100000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 3> radio 0, IF 300000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 4> radio 1, IF -300000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 5> radio 1, IF -100000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 6> radio 1, IF 100000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 7> radio 1, IF 300000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora std channel> radio 0, IF 300000 Hz, 500000 Hz bw, SF 8


#9

Hola Andres

english please :sunglasses:


(Andres Wagner) #10

Sure, just give me a second :wink:


(Andres Wagner) #11

Hi Patricio, take a look at this document from the SubTel. Apparently it is clear for the SubTel that the 902-928 range can’t be considered as exclusive in any way, as: “many industrial, scientific and medical equipments are using it”. The Subtel also goes further and states that, “anyone operating in this band has to accept the interference that is now assumed to be part of this band”. This documents is dated March 2014… before the one you mentioned which is dated December 2014. In my opinion this is another demonstration off poor/lack government management around these “modern issues”, where first everyone is allowed to use a certain frequency band, and at the same time the government agency is tendering part of it. Certainly the worst part of it is the point where it states that: “is responsibility of the interested part in avoiding those interferences”, which clearly translates into cases like the one you mentioned, where one of the biggest telecommunication companies in Chile is demanding a home-owner for using some surveillance cameras at his home. Only in Chile…


(Felipe Astroza) #12

hey @awagner , I’m Felipe, I don’t know why you call me Patricio :stuck_out_tongue:

Yes, maybe we need an organization https://www.eff.org like to protect some electronic rights. We should take care of keep 915-928 as ISM band at least.

Regarding the gateway conf, I think Australian config fits to Chile laws. Should we adopt AU-global_conf.json for Chile?


(Felipe Astroza) #13

Hi again,

I have news:

  1. I set up a gateway bridge in Chile to reduce traffic latency, to use national traffic only on gateway devices and help to collect network statistics. The hostname is thethings.cl.beehub.io . It is hosted on a Data center at Curico, Region del Maule, Chile.

  2. I made a pull request to TTN for including a CL config https://github.com/TheThingsNetwork/gateway-conf/pull/31
    The config is based on Australian one
    Also you can get it from here: https://github.com/Orixen/gateway-conf/blob/master/CL-global_conf.json

Cheers


(Andres Wagner) #14

Brilliant @astroza. Australia is leading in many other ways too, we should follow their path. Great work!


(Ignacio GĂłmez) #15

Hi, guys. With @dhinojosacm we too have been working with Lora for some months now and we own 3 different gateways. We set them up using the US conf example, i.e.:

"SX1301_conf": {
	"lorawan_public": true,
        "clksrc": 0,
        "clksrc_desc": "radio_0 provides clock to concentrator",
        "antenna_gain": 0,
        "antenna_gain_desc": "antenna gain, in dBi",
        "radio_0": {
            "enable": true,
            "type": "SX1257",
            "freq": 904300000,
            "rssi_offset": -166,
            "tx_enable": true,
            "tx_freq_min": 923000000,
            "tx_freq_max": 928000000
        },
        "radio_1": {
            "enable": true,
            "type": "SX1257",
            "freq": 905000000,
            "rssi_offset": -166,
            "tx_enable": false
        },
        "chan_multiSF_0": {
            "desc": "Lora MAC, 125kHz, all SF, 903.9 MHz",
            "enable": true,
            "radio": 0,
            "if": -400000
        },
        "chan_multiSF_1": {
            "desc": "Lora MAC, 125kHz, all SF, 904.1 MHz",
            "enable": true,
            "radio": 0,
            "if": -200000
        },
        "chan_multiSF_2": {
            "desc": "Lora MAC, 125kHz, all SF, 904.3 MHz",
            "enable": true,
            "radio": 0,
            "if": 0
        },
        "chan_multiSF_3": {
            "desc": "Lora MAC, 125kHz, all SF, 904.5 MHz",
            "enable": true,
            "radio": 0,
            "if": 200000
        },
        "chan_multiSF_4": {
            "desc": "Lora MAC, 125kHz, all SF, 904.7 MHz",
            "enable": true,
            "radio": 1,
            "if": -300000
        },
        "chan_multiSF_5": {
            "desc": "Lora MAC, 125kHz, all SF, 904.9 MHz",
            "enable": true,
            "radio": 1,
            "if": -100000
        },
        "chan_multiSF_6": {
            "desc": "Lora MAC, 125kHz, all SF, 905.1 MHz",
            "enable": true,
            "radio": 1,
            "if": 100000
        },
        "chan_multiSF_7": {
            "desc": "Lora MAC, 125kHz, all SF, 905.3 MHz",
            "enable": true,
            "radio": 1,
            "if": 300000
        },
        "chan_Lora_std": {
            "desc": "Lora MAC, 500kHz, SF8, 904.6 MHz",
            "enable": true,
            "radio": 0,
            "if": 300000,
            "bandwidth": 500000,
            "spread_factor": 8
        },
        "chan_FSK": {
            "desc": "FSK disabled",
            "enable": false
        },
        "tx_lut_0": {
            "desc": "TX gain table, index 0",
            "pa_gain": 0,
            "mix_gain": 8,
            "rf_power": -6,
            "dig_gain": 0
        },
        "tx_lut_1": {
            "desc": "TX gain table, index 1",
            "pa_gain": 0,
            "mix_gain": 10,
            "rf_power": -3,
            "dig_gain": 0
        },
        "tx_lut_2": {
            "desc": "TX gain table, index 2",
            "pa_gain": 0,
            "mix_gain": 12,
            "rf_power": 0,
            "dig_gain": 0
        },
        "tx_lut_3": {
            "desc": "TX gain table, index 3",
            "pa_gain": 1,
            "mix_gain": 8,
            "rf_power": 3,
            "dig_gain": 0
        },
        "tx_lut_4": {
            "desc": "TX gain table, index 4",
            "pa_gain": 1,
            "mix_gain": 10,
            "rf_power": 6,
            "dig_gain": 0
        },
        "tx_lut_5": {
            "desc": "TX gain table, index 5",
            "pa_gain": 1,
            "mix_gain": 12,
            "rf_power": 10,
            "dig_gain": 0
        },
        "tx_lut_6": {
            "desc": "TX gain table, index 6",
            "pa_gain": 1,
            "mix_gain": 13,
            "rf_power": 11,
            "dig_gain": 0
        },
        "tx_lut_7": {
            "desc": "TX gain table, index 7",
            "pa_gain": 2,
            "mix_gain": 9,
            "rf_power": 12,
            "dig_gain": 0
        },
        "tx_lut_8": {
            "desc": "TX gain table, index 8",
            "pa_gain": 1,
            "mix_gain": 15,
            "rf_power": 13,
            "dig_gain": 0
        },
        "tx_lut_9": {
            "desc": "TX gain table, index 9",
            "pa_gain": 2,
            "mix_gain": 10,
            "rf_power": 14,
            "dig_gain": 0
        },
        "tx_lut_10": {
            "desc": "TX gain table, index 10",
            "pa_gain": 2,
            "mix_gain": 11,
            "rf_power": 16,
            "dig_gain": 0
        },
        "tx_lut_11": {
            "desc": "TX gain table, index 11",
            "pa_gain": 3,
            "mix_gain": 10,
            "rf_power": 20,
            "dig_gain": 0
        },
        "tx_lut_12": {
            "desc": "TX gain table, index 12",
            "pa_gain": 3,
            "mix_gain": 11,
            "rf_power": 23,
            "dig_gain": 0
        },
        "tx_lut_13": {
            "desc": "TX gain table, index 13",
            "pa_gain": 3,
            "mix_gain": 12,
            "rf_power": 24,
            "dig_gain": 0
        },
        "tx_lut_14": {
            "desc": "TX gain table, index 14",
            "pa_gain": 3,
            "mix_gain": 13,
            "rf_power": 25,
            "dig_gain": 0
        },
        "tx_lut_15": {
            "desc": "TX gain table, index 15",
            "pa_gain": 3,
            "mix_gain": 15,
            "rf_power": 26,
            "dig_gain": 0
        }
    }

We weren’t aware of any limitations regarding this range, and apart from the resolution @astroza linked, haven’t seen any reports on it. Do you have any more information about this?

Also, we were under the impression that Chile uses the US 902-928 band, as seen here, here or here, and that’s why at the beginning we set our gateways following that configuration.


(Ignacio GĂłmez) #16

I just found the modification to the grant that is cited in the resolution here. Similarly to what @awagner cited, it states the following:

3. El uso de la bandas de frecuencia asignadas deberá aceptar la interferencia perjudicial resultante de aplicaciones industriales, científicas y médicas (ICM) que operen en la banda 902 - 928 MHz, conforme a lo dispuesto en la Nota 42 del Cuadro de Atribución de Bandas de Frecuencias, del Plan General de Uso del Espectro Radioeléctrico, aprobado por decreto supremo Nº127, de 2006, del Ministerio de Transportes y Telecomunicaciones, y sus modificaciones

I haven’t found something that refers to this decree, and as I understand it, it states that though there is a grant, they have to cope with use of the band by third parties. If someone can provide more recent information or any modifications to his or other decrees, that’d be great.


(Felipe Astroza) #17

I saw that but the fact is Subtel from 2014 [1] is asking to stop transmission on 902.1-912.1 range. What I don’t want is once we are deployed a network along chilean territory someone comes to us to stop the project. There is a preceding complaint and resolution from Subtel, what could be different in our case ?

Would it be a good idea to ask directly to Subtel about this misunderstanding ? o maybe, meet to AUTOMOTRIZ PETRIC to know how they handled the requirement.

just in case, we still have two available plans AU915 and AS923 to evaluate

[1] http://www.subtel.gob.cl/transparencia/Perfiles/Transparencia20285/Normativas/Oficios/14oo_13939.pdf


(Ignacio GĂłmez) #18

I think that’s the key. We have no problem with switching ranges, but it’d be good to know if there are real limitations or not, since everything we’ve seen dates from 2014. Who’s to tell that later on they don’t grant another range to someone else and we must keep switching? Are they even able to do that? What could we as a whole community do against it? Those are the things that concern me if indeed that range is banned for our use.

Anyway, we’ll let you know if we find anything else.


(Ignacio GĂłmez) #19

Hi, guys.

@dhinojosacm, from work, created a Telegram group called LoRaWAN Chile so that we can discuss everything involving LoRa adn LoRaWAN, not only TTN, and share our experiences. You can find the group here: https://t.me/LorawanChile.

Cheers!