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Device managementPrinciples

Radio Configuration

What is a Radio Configuration? What does it stand for?

Definition

Sigfox service operates in the ISM and SRD bands worldwide from 862 to 928 MHz.

Global operations are split into three geographical zones: each zone has a different set of parameters which clearly dimension the device hardware implementation: mainly frequency range, maximum radiated power and radio front end specificities:

 

Zone 1

EMEAI

Zone 2

AMERICAS/ APAC 1

Zone 3

APAC 2 (Japan, South Korea)

Frequency range (MHz)

862-876

902-928

RC

RC1

RC2,4

RC3a, RC3c, RC5

Radio configuration

Within a given Sigfox zone, local regulations may impose specific rules to operate in the unlicensed bands.

Sigfox Radio Configuration (RC) defines the radio parameters in which the device shall operate: Sigfox operating frequencies, output power, spectrum access mechanism, throughput, coexistence with other radio technologies.

 

Each radio configuration includes 4 uplink classes: 0u, 1u, 2u and 3u

Sigfox’s high limit EIRP recommendation is included in each column although regulation sometimes allows more radiated power than the Sigfox recommendation.

Sigfox’s recommendation is set to comply with the Sigfox technological approach of:

  • Low current consumption
  • Balanced link budget between uplink and downlink communication

RC1

Uplink class 

 

Class 0u

Class 1u

Class 2u

Class 3u

EIRP (dBm)

High limit: device should comply with the normative limit of the target countries standard in the 868-868.6MHz frequency band for non-specific use applications

 

Sigfox high limit recommendation: 16dBm

 

Low limit: 12dBm

12dBm>EIRP≥7dBm

7dBm>EIRP≥2dBm

Below 2dBm

RC2

Uplink class 

 

Class 0u

Class 1u

Class 2u

Class 3u

EIRP (dBm)

High limit: device should comply with the limit of the target countries standard 902.1375-904.6625MHz frequency band.

 

Sigfox high limit recommendation: 24dBm

 

Low limit: 20dBm

20dBm>EIRP≥15dBm

15dBm>EIRP≥10dBm

Below 10dBm

RC3a RC3c

Uplink class 

 

Class 0u

Class 1u

Class 2u

Class 3u

EIRP (dBm)

High limit: device should comply with the normative limit of the ARIB STD -T108 standard in the 920.5-929.7MHz frequency band.

 

Sigfox high limit recommendation: 16dBm ( * )

 

Low limit: 12dBm

12dBm>EIRP≥7dBm

7dBm>EIRP≥2dBm

Below 2dBm

( * ) warning : conducted power is limited to 13dBm in Japan

Note : RC3 was renamed RC3a

RC4

Uplink class 

 

Class 0u

Class 1u

Class 2u

Class 3u

EIRP (dBm)

High limit: device should comply with the limit of the target countries standard in the 920.1375-922.6625MHz frequency band.

 

Sigfox high limit recommendation: 24dBm

 

Low limit: 20dBm

20dBm>EIRP≥15dBm

15dBm>EIRP≥10dBm

Below 10dBm

RC5

Uplink class 

 

Class 0u

Class 1u

Class 2u

Class 3u

EIRP (dBm)

High limit: device should comply with the limit of the target countries standard in the 920.8-923.4MHz frequency band.

 

Sigfox high limit recommendation: 14dBm

 

Low limit: 10dBm

10dBm>EIRP≥5dBm

5dBm>EIRP≥0dBm

Below 0dBm

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