No licence shall be required under indoor and outdoor environment to establish, maintain, work, possess or deal in any wireless equipment for the purpose of low power wireless access systems, including radio local area networks operating in the frequency band 5 150-5 250 MHz; 5 250-5 350 MHz; 5 470-5 725 MHz; and 5 725-5 875 MHz and complying with the following technical parameters; namely:-
(i) in the band 5 150-5 250 MHz, for access points operating with transmitting antennas of antenna gain of 6 dBi and less, the maximum conducted output power over the frequency band of operation shall not exceed 30 dBm (1 Watt) and; the maximum power spectral density shall not exceed 17 dBm (50 mW) in any 1 MHz band. If transmitting antennas of directional gain greater than 6 dBi are used, the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the antenna gain exceeds 6 dBi. When used for outdoor access point applications, the maximum e.i.r.p. at any elevation angle above 30 degrees as measured from the horizontal direction shall not exceed 21 dBm (125 mW);
(ii) fixed point-to-point access points operating in the frequency band 5 150-5 250 MHz may employ antennas with directional gain up to 23 dBi and use the maximum conducted output power and maximum power spectral density as indicated at sub-paragraph (i) above. With access points’/ devices’ directional antenna gain higher than of 23 dBi, maximum conducted output power and maximum power spectral density shall be reduced by the amount in dB that the antenna gain exceeds 23 dBi; point-to-multipoint systems, omni directional applications, and multiple collocated transmitters transmitting the same information shall not be considered as point-to-point systems for the purpose of these rules;
(iii) for mobile and portable client devices in the 5 150-5 250 MHz band, the maximum conducted output power over the frequency band of operation shall not exceed 250 mW provided the maximum antenna gain does not exceed 6 dBi and in addition, the maximum power spectral density shall not exceed 11 dBm in any 1 MHz band; if transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi;
(iv) in the frequency bands 5 250 – 5 350 MHz and 5 470- 5 725 MHz for access points operating with transmitting antennas of antenna gain 6 dBi and less, the maximum conducted output power over the frequency band of operation shall not exceed 24 dBm (250 mW) or 11dBm + 10 log B, whichever is less, where ‘B’ is the emission bandwidth in MHz. In addition, the maximum power spectral density shall not exceed 11dBm in any 1 MHz band.
If transmitting antennas of directional gain greater than 6 dBi are used, the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi.
The use of appropriate interference mitigation technique dynamic frequency selection and or transmit power control shall be mandatory. Transmit power control mechanism may not be required for systems with an e.i.r.p. of less than 500 mW;
(v) in the band 5 725-5 875 MHz, the minimum 6 dB bandwidth of the devices shall be at least 500 kHz and with transmitting antennas of antenna gain 6 dBi and less, the maximum conducted output power over the frequency band of operation shall not exceed 30 dBm (1 W).
In addition, the maximum power spectral density shall not exceed 30 dBm in any 500 kHz band. If the transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi;
(vi) Fixed point-to-point access points operating in the 5 725-5 875 MHz band may employ antennas with directional gain up to 23 dBi and use the maximum conducted output power and maximum power spectral density as indicated at sub-paragraph (iv) above. With access point devices directional antenna gain higher than of 23 dBi, maximum conducted output power and maximum power spectral density shall be reduced by the amount in dB that the antenna gain exceeds 23 dBi.
Point-to-multipoint systems, omni directional applications, and multiple collocated transmitters transmitting the same information shall not be considered as point-to-point systems for the purpose of these rules.
8 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(i)]