Radio Standards Specification RSS-213, Issue 3, 2 GHz License-Exempt Personal Communications Services (LE-PCS) Devices, replaces Issue 2 of RSS-213, 2 GHz Licence-exempt Personal Communications Service Devices (PCS), dated December 2005.
This document will be in force upon publication on the Industry Canada website.
Listed below are the changes:
- (1) The title of the document has been changed from 2 GHz Licence-exempt Personal Communications Services Devices (LE-PCS) to 2 GHz Licence-Exempt Personal Communications Services (LE-PCS) Devices
- (2) The number of duplex system access channels has been reduced from 40 to 20.
- (3) The latest version of the ANSI C63.17-2013 standard is referenced as normative.
Issued under the authority of
the Minister of Industry
Engineering, Planning and Standards Branch
This Radio Standards Specification (RSS) sets out the certification requirements for licensed-exempt personal communications services (LE-PCS) devices operating in the band 1920-1930 MHz.
Equipment covered by this standard is classified as Category I equipment. Either a technical acceptance certificate (TAC) issued by the Certification and Engineering Bureau of Industry Canada or a certificate issued by a certification body (CB) is required.
Equipment covered by this standard is exempt from licensing requirements pursuant to section 15 of the Radiocommunication Regulations.
2.2.1 Industry Canada Documents
All Spectrum Management and Telecommunications publications are available on Industry Canada’s website at www.ic.gc.ca/spectrum under Official Publications.
The following documents should be consulted:
2.2.2 Reference Documents
The above document can be obtained from IEEE’s website at http://www.ieee.org.
RSS-213 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.
This standard refers to ANSI C63.17-2013 for measurement methods, and where there are discrepancies between the requirements stated in the RSS-213 text and the relevant text of ANSI C63.17-2013, the RSS-213 text shall take precedence.
If the equipment is a cordless telephone, the base station shall comply with this standard and with the applicable requirements of CS-03.
In addition to the requirements in RSS-Gen, the limits and requirements set out in this standard and in associated Industry Canada standards shall apply. Compliance with these limits shall be demonstrated using the method of measurement described in Section 3 of this standard.
A test report shall be prepared in accordance with RSS-Gen and ANSI C63.17-2013.
Equipment certified under this standard shall use digital modulation. Both asynchronous and isochronous operations are permitted within the band 1920-1930 MHz.
In order to provide equitable access to the radio frequency spectrum, the LE-PCS device must possess an access protocol as described below.
LE-PCS devices shall automatically discontinue transmission in case of absence of information to transmit or operational failure. This is not intended to preclude the transmission of control and signalling information or the use of repetitive codes employed by certain digital technologies to complete frame or burst intervals.
Devices must incorporate a mechanism for monitoring the time and spectrum windows that their transmission is intended to occupy. The following criteria must be met:
Periodic acknowledgements must be received at least every 30 s or transmission must cease.
Channels used exclusively for control and signalling information may transmit continuously for 30 s without receiving an acknowledgement, at which time the access criteria must be repeated.
A device utilizing the provisions of this paragraph 5.2(5) must have monitored all access channels defined for its system within the last 10 s and must verify, within the 20 ms (40 ms for devices designed to use a 20 ms frame period) immediately preceding actual channel access, that the detected power of the selected time and spectrum windows is no higher than the previously detected value.
The power measurement resolution bandwidth for this comparison must be accurate to within 6 dB.
No device or group of cooperating devices located within 1 m of each other shall during any frame period occupy more than 6 MHz of aggregate bandwidth, or alternatively, more than one third of the time and spectrum windows defined by the system.
The maximum reaction time of the monitor shall be less than 50√ (1.25/occupied bandwidth in MHz) μs for signals at the applicable threshold level but shall not be required to be less than 50 μs.
If a signal of 6 dB or more above the threshold level is detected, the maximum reaction time shall be 35√ (1.25/occupied bandwidth in MHz) μs but shall not be required to be less than 35 μs.
If both the intended transmit and receive time and spectrum windows meet the access criteria, then the initiating device can initiate a transmission in the intended transmit time and spectrum window.
If the power detected by the responding device can be decoded as a duplex connection signal from the initiating device, then the responding device may immediately begin transmitting in the receive time and spectrum window monitored by the initiating device.
The monitored time and spectrum window must total at least 50% of the 10 ms frame interval and the monitored spectrum must be within 1.25 MHz of the centre frequency of channel(s) already occupied by that device or co-located cooperating devices.
If the access criteria are met for the intended receive time and spectrum window under the above conditions, then transmission in the intended transmit window by the initiating device may commence.
Each device that implements time division for the purpose of maintaining a duplex connection on a given frequency carrier shall maintain a frame repetition rate with a frequency stability of at least 50 parts per million (ppm).
Each device that further divides access in time in order to support multiple communication links on a given frequency carrier shall maintain a frame repetition rate with a frequency stability of at least 10 ppm.
The jitter (time-related, abrupt, spurious variations in the duration of the frame interval) introduced at the 2 ends of such a communication link shall not exceed 25 μs for any 2 consecutive transmissions.
Transmissions shall be continuous in every time and spectrum window during the frame period defined for the device.
The carrier frequency stability shall be maintained within ±10 ppm (±0.001%).
The limits of AC power line conducted emissions are given in RSS-Gen.
The emission bandwidth shall not be less than 50 kHz nor more than 2.5 MHz.
Peak transmit power shall not exceed 100 μW multiplied by the square root of the occupied bandwidth in hertz. The peak transmit power shall be reduced by the amount in decibels that the maximum directional gain of the antenna exceeds 3 dBi.
The peak-hold power spectral density of transmitters shall not exceed 12 mW per any 3 kHz bandwidth.
As an alternative to the peak-hold power spectral density, the time-averaged power spectral density may be measured and it shall not exceed 3 mW per any 3 kHz bandwidth.
5.8.1 Emissions Outside the Band 1920-1930 MHz
Emissions outside the band 1920-1930 MHz shall be attenuated below a reference power of 112 mW (–9.5 dBW) by at least:
- 30 dB between the band edges and 1.25 MHz above and below the band edges;
- 50 dB between 1.25 MHz and 2.5 MHz above or below the band edges; and
- 60 dB at 2.5 MHz or greater above or below the band edges.
5.8.2 Emissions Inside the Band 1920-1930 MHz
Emissions inside the band 1920-1930 MHz shall be attenuated below the transmit power permitted for that device, as follows:
- 30 dB between the frequencies 1B and 2B measured from the centre of the occupied bandwidth;
- 50 dB between the frequencies 2B and 3B measured from the centre of the occupied bandwidth;
- 60 dB between the frequencies 3B and band edges;
where B is the occupied bandwidth in hertz.