RSS-170 — Mobile Earth Stations (MESs) and Ancillary Terrestrial Component (ATC) Equipment Operating in the Mobile-Satellite Service (MSS) Bands

Issue 3

Posted on Industry Canada website: July 9, 2015

Preface

Radio Standards Specification RSS‑170, Issue 3, Mobile Earth Stations (MESs) and Ancillary Terrestrial Component (ATC) Equipment Operating in the Mobile‑Satellite Service (MSS) Bands, replaces RSS‑170, Issue 2, dated March 2011.

This document will be in force upon publication on Industry Canada's website.

Listed below are the changes:

  1. Requirements for ATC equipment operating in the bands 2000-2020 MHz and 2180-2200 MHz have been modified. These frequency bands are also referred to as AWS‑4 bands in Industry Canada's decision paper SLPB-008-14. The changes are the removal of the requirement for a dual‑mode handset (working with both satellite and terrestrial systems) and the possibility to use the band 2000-2020 MHz for ATC downlink.
  2. The requirement for MESs operating in the bands 2000-2020 MHz and 2180-2200 MHz to comply with emission limits to protect radionavigation‑satellite service has been withdrawn.
  3. The requirement for receiver standard spurious emissions has been removed, as it is incorporated in RSS‑Gen, General Requirements for Compliance of Radio Apparatus.

Issued under the authority of
the Minister of Industry

 

space to insert signature
Daniel Duguay
Director General
Engineering, Planning and Standards Branch



1. Scope

This Radio Standard Specification (RSS) sets out standards for the certification of radio transmitters and receivers operating in the mobile‑satellite service (MSS), including mobile ancillary terrestrial component (ATC) equipment, for the frequency bands listed in Table 1 and Table 2 respectively.

2. General Information

The equipment covered by this standard is classified as Category I equipment and a technical acceptance certificate (TAC), issued by the Certification and Engineering Bureau of Industry Canada, or a certificate, issued by a recognized certification body (CB), is required.

2.1 Licensing Requirements

The equipment covered by this standard is subject to licensing pursuant to subsection 4(1) of the Radiocommunication Act.

2.2 Definitions

Ancillary Terrestrial Component (ATC) is a ground communications network complementary to and operating as a part of an integrated MSS system, and which, together with the satellite component, provides an integrated satellite offering. In such a system, the ground component is controlled by the satellite resource and network management system. Furthermore, the ground component uses the same authorized frequency band as the associated operating MSS system.

ATC Base Station Equipment is terrestrial fixed equipment designed for communicating with ATC mobile equipment.

ATC Mobile Equipment is equipment designed for single- or dual‑mode operation and is intended to be used while in motion or during halts at unspecified locations. ATC single‑mode mobile equipment shall be capable of communicating only with the terrestrial ATC system, whereas ATC dual‑mode mobile equipment shall be capable of communicating with both the mobile satellite network and the terrestrial ATC system.

Broadband Emissions are emissions with a bandwidth greater than 700 Hz.

Discrete Emissions are emissions with a bandwidth lesser than or equal to 700 Hz.

Carrier‑off state is the state when either a mobile earth station (MES) is authorized by the network control facility (NCF) to transmit but does not transmit a signal, or when it is not authorized by the NCF to transmit.

Mobile Earth Station (MES) is equipment designed for communicating with a satellite in the MSS and intended to be used while in motion or during halts at unspecified locations.

2.3 Related Documents

All Spectrum Management and Telecommunications publications are available on the departmental website at www.ic.gc.ca/spectrum, under Official Publications.

In addition to related documents specified in RSS‑Gen, General Requirements for Compliance of Radio Apparatus, the following Industry Canada documents should be consulted:

RP‑023Spectrum and Licensing Policy to Permit Ancillary Terrestrial Mobile Services as Part of Mobile‑Satellite Service Offerings

SRSP‑519Technical Requirements for the Ancillary Terrestrial Component (ATC) of Mobile‑Satellite Service (MSS) Systems Operating in the Bands 2000-2020 MHz and 2180-2200 MHz

SLPB-008-14Decision on a Policy, Technical and Licensing Framework for Mobile Satellite Service and Advanced Wireless Service (AWS‑4) in the Bands 2000-2020 MHz and 2180-2200 MHz Footnote 1

horizontal line
RP – Radio Systems Policy
SLPB – Decision Paper
SRSP – Standard Radio System Plan

3. General Requirements

3.1 RSS‑Gen Compliance

This issue of RSS‑170 shall be used in conjunction with RSS‑Gen, General Requirements for Compliance of Radio Apparatus, for general specifications and information relevant to the equipment for which this standard applies.

4. Certification Requirements

Before equipment can be certified, the applicant shall provide a declaration from the licensed satellite operator that the equipment works satisfactorily with the satellite system.

ATC mobile equipment operating in the bands 2000-2020 MHz and 2180-2200 MHz can be certified for either dual‑mode or single‑mode operation (i.e. the equipment is not required to be capable of communicating with both the mobile‑satellite network and the terrestrial ATC system). ATC mobile equipment operating in frequency bands other than the bands 2000-2020 MHz and 2180-2200 MHz shall be certified only if it is dual‑mode equipment.

5. Transmitter Standard Specifications

5.1 Frequency Bands

The frequency bands for equipment operating in the MSS that are to be certified under this standard are listed in tables 1 and 2. The bands 2000-2020 MHz and 2180-2200 MHz are divided into two frequency blocks of 10 MHz for each frequency band.

Table 1 – Frequency Bands for MESs
MESs
Transmit Frequency (MHz)
Receive Frequency (MHz) Application
148-150.05 137-138 Non-voice
399.9-400.05 400.15-401 Voice and Data
1610-1626.5 2483.5-2500
1626.5-1660.5 1525-1559
2000-2020 2180-2200


Table 2 – Frequency Bands for ATC Equipment
ATC Base Station ATC Mobile Equipment
Transmit Frequency (MHz) Receive Frequency (MHz) Transmit Frequency(MHz) Receive Frequency (MHz)
2483.5-2500 1610-1626.5 1610-1626.5 2483.5-2500
1525-1559 1626.5-1660.5 1626.5-1660.5 1525-1559
2000-2020/ 2180-2200 2000-2020 2000-2020 2000-2020/ 2180-2200

5.2 Frequency Stability

For mobile earth station equipment, the carrier frequency shall not depart from the reference frequency by more than ±10 ppm.

For ATC equipment operating in the bands 2000-2020 MHz and 2180-2200 MHz, the frequency stability shall be sufficient to ensure that the emission bandwidth stays within the operating frequency block when tested to the temperature and supply voltage variations specified in RSS‑Gen.

For ATC equipment operating in frequency bands other than the bands 2000-2020 MHz and 2180–2200 MHz, the carrier frequency shall not depart from the reference frequency in excess of ±2.5 ppm for mobile equipment, and ±1.5 ppm for base station equipment.

5.3 Transmitter Equivalent Isotropically Radiated Power (e.i.r.p.)

5.3.1 ATC Equipment

The maximum e.i.r.p. of ATC mobile equipment transmitting in the band 1610-1626.5 MHz shall not exceed 1 dBW in a 1.25 MHz bandwidth.

The maximum e.i.r.p. of ATC mobile equipment transmitting in the band 1626.5-1660.5 MHz shall not exceed 0 dBW in a channel.

The maximum e.i.r.p. of ATC mobile equipment transmitting in the band 2000-2020 MHz shall not exceed 2W measured in terms of root‑mean‑square (RMS) average value. In addition, the peak‑to‑average power ratio (PAPR) of the equipment shall not exceed 13 dB for more than 0.1% of the time, using a signal that corresponds to the highest PAPR during periods of continuous transmission.

Consult SRSP‑519 for e.i.r.p. limits on ATC base stations operating in the bands 2000-2020 MHz and 2180-2200 MHz.

5.3.2 Mobile Earth Stations (MESs)

The application for MES certification shall state the MES e.i.r.p. that is necessary for satisfactory communication. The maximum permissible e.i.r.p. will be the stated e.i.r.p. plus a 2 dB margin. If a detachable antenna is used, the certification application shall state the recommended antenna type and manufacturer, the antenna gain and the maximum transmitter output power at the antenna terminal.

5.4 Transmitter Unwanted Emissions

The transmitter unwanted emissions shall be measured for all channel bandwidths with the carrier frequency set at both the highest and lowest channels in which the equipment is designed to operate.

The e.i.r.p. density of unwanted and carrier‑off state emissions outlined in this section (Section 5.4) shall be averaged over any 2‑ms active transmission using an RMS detector with a resolution bandwidth of 1 MHz for broadband emissions and a resolution bandwidth of 1 kHz for discrete emissions, unless stated otherwise.

For ATC equipment operating in the bands 2000-2020 MHz and 2180-2200 MHz, the unwanted emission limits shall be determined using a measurement bandwidth of 1 MHz or greater. However, in the 1 MHz band immediately outside and adjacent to the equipment's operating frequency block, a resolution bandwidth of at least 1% of the occupied bandwidth may be employed.

5.4.1 ATC Base Station Equipment

5.4.1.1 Band 1525-1559 MHz

The e.i.r.p. density of unwanted emissions of ATC base station equipment transmitting in the band 1525-1559 MHz shall not exceed:

  1. (1)−32.4 dBW/MHz and –39.4 dBW/MHz at 1 MHz and 2 MHz beyond the edges of the equipment channel bandwidth; and
  2. (2)−70 dBW/MHz in the band 1559-1605 MHz, and linearly interpolated from −70 dBW/MHz at 1605 MHz to −46 dBW/MHz at 1610 MHz for broadband emissions; and
  3. (3) −80 dBW/kHz in the band 1559-1605 MHz, and linearly interpolated from −80 dBW/kHz at 1605 MHz to −56 dBW/kHz at 1610 MHz, for discrete emissions.
5.4.1.2 Bands 2000-2020 MHz and 2180-2200 MHz

The unwanted emissions of ATC base station equipment transmitting in the bands 2000-2020 MHz and 2180-2200 MHz shall comply with the following:

  1. (1) The power of any unwanted emissions at frequencies outside the equipment's operating frequency block shall be attenuated below the transmitter power P (dBW), by 43 + 10 log p (watts), dB.
  2. (2) For equipment operating in the band 2180-2200 MHz, in addition to (1), the power of any emissions on all frequencies between 2200 MHz and 2290 MHz shall not exceed an e.i.r.p. of −100.6 dBW/4 kHz.
5.4.1.3 Band 2483.5-2500 MHz

The unwanted emissions of ATC base station equipment transmitting in the band 2483.5-2500 MHz shall comply with the following:

  1. (1) The e.i.r.p. density of unwanted emissions shall not exceed:
    1. −44.1 dBW/30 kHz measured from the edge of the equipment channel bandwidth; and
    2. −70 dBW/MHz for broadband emissions and −80 dBW/kHz for discrete emissions in the band 1559-1610 MHz.
  2. (2) The power of any unwanted emissions above 2500 MHz shall be attenuated below the transmitter power, P (dBW), by 43 + 10 log p (watts), dB. Compliance with this limit shall be based on the use of a measurement resolution bandwidth of at least 1% of the occupied bandwidth in the 1 MHz band immediately above the 2500 MHz frequency. Above this 1 MHz, a resolution bandwidth of 1 MHz or greater shall be employed. A narrower resolution bandwidth may be used provided that the measured power is integrated over the full required measurement bandwidth (i.e. 1 MHz or 1% of the occupied bandwidth, as applicable).

5.4.2 ATC Mobile Equipment

ATC mobile equipment operating in the band 2000-2020 MHz shall comply with the unwanted emissions limit specified in Section 5.4.2.3 ATC mobile equipment operating in frequency bands other than 2000-2020 MHz shall comply with the unwanted emissions limits specified in Section 5.4.3.1 in addition to the limits in this section.

5.4.2.1 Band 1610-1626.5 MHz

The e.i.r.p. density of unwanted emissions of ATC mobile equipment transmitting in the band 1610‑1626.5 MHz shall not exceed:

  1. (1) −57.1 dBW/30 kHz measured from the edge of the equipment channel bandwidth;
  2. (2) −70 dBW/MHz in the band 1559-1605 MHz, and linearly interpolated from −70 dBW/MHz at 1605 MHz to −10 dBW/MHz at 1610 MHz for broadband emissions; and
  3. (3) −80 dBW/kHz in the band 1559-1605 MHz, and linearly interpolated from −80 dBW/kHz at 1605 MHz to −20 dBW/kHz at 1610 MHz for discrete emissions.
5.4.2.2 Band 1626.5-1660.5 MHz

The e.i.r.p. density of unwanted emissions of ATC mobile equipment transmitting in the band 1626.5–1660.5 MHz shall not exceed:

  1. (1) −58 dBW/4 kHz at 1 MHz beyond the edge of the equipment channel bandwidth;
  2. (2) −70 dBW/MHz in the band 1559-1605 MHz, and linearly interpolated from −70 dBW/MHz at 1605 MHz to −46 dBW/MHz at 1610 MHz for broadband emissions; and
  3. (3) −80 dBW/kHz in the band 1559-1605 MHz, and linearly interpolated from –80 dBW/kHz at 1605 MHz to −56 dBW/kHz at 1610 MHz for discrete emissions.
5.4.2.3 Band 2000-2020 MHz

The power of any unwanted emissions of ATC mobile equipment transmitting in the band 2000-2020 MHz shall be attenuated below the transmitted power, P (dBW), as follows:

  1. (1) 43 + 10 log p, dB outside the equipment's operating frequency block and above 2020 MHz;
  2. (2) linearly interpolated from 43 + 10 log p, dB at 2000 MHz to 70 + 10 log p, dB at 1995 MHz for frequencies below 2000 MHz; and
  3. (3) 70 + 10 log p, dB at frequencies lower than 1995 MHz

where p is transmitter output power in watts.

Compliance with the above limits is based on the use of measurement instrumentation employing a resolution bandwidth of at least 1% of the occupied bandwidth in the 1 MHz bands immediately outside the equipment's frequency block of operation. Beyond this 1 MHz, a resolution bandwidth of 1 MHz or greater shall be employed. A narrower resolution bandwidth may be used provided that the measured power is integrated over the full required measurement bandwidth (i.e. 1 MHz or 1% of the occupied bandwidth, as applicable).

5.4.3 Mobile Earth Stations

5.4.3.1 Mobile Earth Stations in All Frequency Bands

The average power of unwanted emissions shall be attenuated below the average output power, P (dBW), of the transmitter, as specified below:

  1. (1) 25 dB in any 4 kHz band, the centre frequency of which is offset from the channel frequency by more than 50%, up to and including 100% of the occupied bandwidth or necessary bandwidth, whichever is greater;
  2. (2) 35 dB in any 4 kHz band, the centre frequency of which is offset from the channel frequency by more than 100%, up to and including 250% of the occupied bandwidth or necessary bandwidth, whichever is greater; and
  3. (3) 43 + 10 log p (watts) in any 4 kHz band, the centre frequency of which is offset from the channel frequency by more than 250% of the occupied bandwidth or necessary bandwidth, whichever is greater.
5.4.3.2 Additional Unwanted Emission Limits for MESs to Protect Radionavigation‑Satellite Service

Mobile earth stations with transmitting frequency in the bands 1610-1626.5 MHz and 1626.5-1660.5 MHz shall comply with the unwanted emission limits specified in this section (Section 5.4.3.2), where applicable, in addition to the limits in Section 5.4.3.1.

5.4.3.2.1 Band 1610-1626.5 MHz

Mobile earth stations with transmitting frequencies between 1610 MHz and 1626.5 MHz shall have the e.i.r.p. density of unwanted emissions in the band 1605-1610 MHz, averaged over any 2‑ms active transmission interval, not exceed the following limits:

  1. (1) −70 dBW/MHz at 1605 MHz, linearly interpolated to −10 dBW/MHz at 1610 MHz for broadband emissions; and
  2. (2) −80 dBW/kHz at 1605 MHz, linearly interpolated to −20 dBW/kHz at 1610 MHz for discrete emissions.
5.4.3.2.2 Band 1626.5-1660.5 MHz

Mobile earth stations with transmitting frequencies between 1626.5 MHz and 1660.5 MHz shall have the e.i.r.p. density of unwanted emissions in the band 1605-1610 MHz, averaged over any 2‑ms active transmission interval, not exceed the following limits:

  1. (1) −70 dBW/MHz at 1605 MHz, linearly interpolated to −46 dBW/MHz at 1610 MHz, for broadband emissions; and
  2. (2) −80 dBW/kHz at 1605 MHz, linearly interpolated to −56 dBW/kHz at 1610 MHz, for discrete emissions.

5.4.4 Carrier‑off State Emissions

Mobile equipment with transmitting frequencies between 1 GHz and 3 GHz shall have the e.i.r.p. density of carrier‑off state emissions in the band 1559-1610 MHz not exceed −80 dBW/MHz.

Footnotes

Footnote 1

In this RSS, AWS‑4 bands are referred as ATC bands 2000-2020 MHz and 2180-2200 MHz

Return to footnote 1 referrer

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