Radio Standards Specification RSS-195, Issue 3, sets out the certification requirements for Wireless Communication Service (WCS) equipment operating in the frequency bands 2305-2320 MHz and 2345-2360 MHz.

Scope and Application

This standard applies to base station, fixed station, and subscriber equipment used for local broadband access services. These services may be deployed in mobile, point-to-point, and point-to-multipoint configurations within the following frequency blocks:

Block W: 2305 – 2320 MHz (15 MHz total spectrum)

Block W': 2345 – 2360 MHz (15 MHz total spectrum)

Regulatory Status and Transition

RSS-195, Issue 3, replaces Issue 2. A transition period of six months is provided from the date of publication. During this time, applications for certification under either Issue 2 or Issue 3 will be accepted. After this period, only Issue 3 applications will be accepted, and all equipment manufactured, imported, or sold in Canada must comply with the current issue. Equipment covered by this standard is classified as Category I and requires a technical acceptance certificate (TAC) or certification by a recognized certification body.

Key Technical Requirements

Equipment must meet specific radio frequency parameters to ensure efficient spectrum use and minimize interference:

Modulation: The equipment must utilize digital modulation.

Automatic Transmit Power Control: Subscriber equipment must employ automatic transmit power control to operate at the minimum power necessary for successful communication.

Frequency Stability: The carrier frequency must remain within the occupied bandwidth when tested over the temperature and voltage variations specified in RSS-Gen.

Peak-to-Average Power Ratio (PAPR): For base and fixed stations in the 2305-2315 MHz and 2350-2360 MHz bands, the PAPR must not exceed 13 dB for more than 0.1% of the time.

Transmitter Power Limits

Power limits are defined based on equipment type and technology (AAS vs. non-AAS):

Non-AAS: Maximum 400 W/MHz e.i.r.p.

Active Antenna Systems (AAS): Maximum 38 dBm/MHz TRP (Total Radiated Power).

Non-AAS: Maximum 2000 W/5 MHz e.i.r.p.

AAS: Maximum 45 dBm/5 MHz TRP.

Fixed Subscriber Equipment: Maximum 20 W/5 MHz e.i.r.p.

Mobile Subscriber Equipment: Maximum 250 mW/5 MHz e.i.r.p.

Unwanted Emission Limits

Unwanted emissions must be measured as average values with a resolution bandwidth (RBW) of 1 MHz. However, immediately adjacent to the frequency range edges, a RBW of at least 1% of the occupied bandwidth is permitted. The limits vary by equipment class:

Base, Fixed, and High-Power Fixed Subscriber Equipment: Emissions are strictly limited across various frequency ranges, with limits as low as -45 dBm/MHz in sensitive bands (e.g., 2200-2285 MHz and 2370-2395 MHz) to protect adjacent services.

Mobile and Low-Power Fixed Subscriber Equipment: These devices follow a specific mask to prevent interference with satellite radio services and other users, with requirements ranging from -13 dBm/MHz to -40 dBm/MHz depending on the frequency offset.

Testing Methods and Procedures

Compliance must be demonstrated using the following procedures:

General Measurements: All measurements must follow the requirements of RSS-Gen unless otherwise specified.

Multi-carrier Operation: If the transmitter supports multi-carrier operation, tests must be performed using both the maximum and minimum number of intended carriers.

AAS Equipment: Active Antenna Systems must demonstrate compliance using TRP (Total Radiated Power) limits. AAS equipment with eight or fewer antenna elements may alternatively demonstrate compliance using e.i.r.p. limits specified for non-AAS equipment.

Radiated Emissions: For equipment with non-detachable antennas, radiated measurements are required to determine e.i.r.p. and unwanted emission levels.

In-Country Requirements

In addition to RSS-195, equipment must comply with:

RSS-Gen: For general radio apparatus requirements (EMC and safety-related testing).

SRSP-516: Technical requirements for the Wireless Communication Service, which includes deployment details and band plan specifics.

Licensing: Operation of this equipment is subject to licensing requirements pursuant to the Radiocommunication Act.