The Wireless Telegraphy (Ultra-Wideband Equipment) (Exemption) Regulations 2009

PART 3 USE OF ULTRA-WIDEBAND EQUIPMENT IN AUTOMOTIVE VEHICLES AND RAILWAY VEHICLES

Exemption

8.  The establishment, installation or use of ultra-wideband equipment complying with the terms, provisions and limitations in regulation 9 is hereby exempt from the provisions of section 8(1) of the Act.

Terms, provisions and limitations

9.—(1) The exemption provided for in regulation 8 shall apply to ultra-wideband equipment which complies with the requirements of paragraphs (2) to (4) of this regulation.

(2) The ultra-wideband equipment must be used in an automotive vehicle or in a railway vehicle.

(3) The ultra-wideband equipment must not cause or contribute to undue interference to other users of the electromagnetic spectrum.

(4) The ultra-wideband equipment must—

(a) emit transmissions which are in accordance with the condition in regulation 10; or

(b) operate using mitigation techniques described in regulation 11 to reduce interference to other users of the electromagnetic spectrum.

Transmission limits

10.  The condition referred to in regulation 9(4)(a) is that the ultra-wideband equipment only emits transmissions—

(a) which—

(i) in frequencies up to 4.2 GHz;

(ii) in the frequency band 4.8 GHz to 6.0 GHz; and

(iii) in frequencies above 8.5 GHz;

when measured in any direction, have a maximum mean e.i.r.p. density and a maximum peak e.i.r.p. density no greater than the limits prescribed for those frequencies in regulation 6; and

(b) which in the frequency band 4.2 GHz to 4.8 GHz and in the frequency band 6.0 GHz to 8.5 GHz—

(i) when measured in any direction, have a maximum mean e.i.r.p. density no greater than -41.3 dBm/MHz provided that—

(aa) a transmitter power control mechanism of at least 12 dB is used to mitigate interference that provides at least equivalent performance to techniques described in harmonised standards; and

(bb) the maximum peak e.i.r.p. density is no greater than 0.0 dBm or the equivalent transmission level; or

(ii) when measured in any direction have a maximum mean e.i.r.p. density no greater than -53.3 dBm/MHz and a maximum peak e.i.r.p. density no greater than 0.0 dBm or the equivalent transmission level.

Mitigation techniques

11.—(1) The mitigation techniques referred to in regulation 9(4)(b) are—

(a) techniques for mitigating interference described in harmonised standards; or

(b) techniques for mitigating interference which achieve at least an equivalent level of protection from interference to other users of the electromagnetic spectrum as that provided by the condition in regulation 10.

(2) The mitigation techniques that may be used under regulation 11(1)(b) for equipment operating in the frequency band 3.1 GHz to 4.8 GHz include a low duty cycle mitigation technique which results in transmissions which—

(a) when measured in any direction, have a maximum mean e.i.r.p. density no greater than

-41.3 dBm/MHz;

(b) do not exceed five milliseconds in duration;

(c) in any second, the sum of all transmitted signals is less than 5% of that second;

(d) in any hour, the sum of all transmitted signals is less than 0.5% of that hour; and

(e) have a maximum peak e.i.r.p. density no greater than 0.0 dBm or the equivalent transmission level.

(3) The mitigation techniques that may be used under regulation 11(1)(b) also include, for equipment operating in the frequency band 3.1 GHz to 4.8 GHz or in the frequency band 8.5 GHz to 9.0 GHz, a technique for detecting other transmissions and avoiding interference with those transmissions (described in harmonised standards) which results in transmissions which—

(a) when measured in any direction, have a maximum e.i.r.p. density no greater than -41.3 dBm/MHz provided that—

(i) a transmitter power control mechanism of at least 12 dB is used to mitigate interference; and

(ii) the maximum peak e.i.r.p. density is no greater than 0.0 dBm or the equivalent transmission level; or

(b) when measured in any direction, have a maximum e.i.r.p. density no greater than -53.3 dBm/MHz.