ANNEX 3: WIDEBAND DATA TRANSMISSION SYSTEMS

Scope of annex
This annex covers frequency bands and regulatory as well as informative parameters recommended for Wideband Data Transmission Systems including: - Data Networks in the band 863-868 MHz; - Wireless Access Systems including Radio Local Area Networks (WAS/RLANs) in the band 2400-2483.5 MHz; - Multiple-Gigabit WAS/RLAN in the band 57-66 GHz.

Frequency Band Power / Magnetic Field Spectrum access and mitigation requirements Modulation / maximum occupied bandwidth ECC/ERC Deliverable Notes
a 863MHz  -  868MHz
25 mW e.r.p. ≤ 10% duty cycle for network access points (note 1). ≤ 2.8% duty cycle otherwise ≤ 1 MHz Data Networks. The frequency band is also identified in Annexes 1, 2 and 11
b 2400MHz  -  2483.5MHz
100 mW e.i.r.p. Adequate spectrum sharing mechanism (e.g. Listen-before-Talk, Detect-And-Avoid) shall be implemented by the equipment Not specified For wide band modulations other than FHSS, the maximum e.i.r.p. density is limited to 10 mW/MHz
c 57GHz  -  66GHz
40 dBm mean e.i.r.p.. This refers to the highest power level of the transmitter power control range during the transmission burst if transmitter power control is implemented Adequate spectrum sharing mechanism (e.g. Listen-before-Talk, Detect-And-Avoid) shall be implemented by the equipment Not specified Fixed outdoor installations are not allowed. The maximum mean e.i.r.p. density is limited to 13 dBm/MHz. Point-to-point links of the Fixed Service are regulated by ECC/REC/(05)02 and ECC/REC/(09)01

Note 1 A network access point in a data network is a fixed terrestrial short range device that acts as a connection point for the other short range devices in the data network to service platforms located outside of that data network. The term data network refers to several short range devices, including the network access point, as network components and to the wireless connections between them.

Additional Information

Harmonised Standards
To be defined for sub-band a) EN 300 328 sub-band b) EN 302 567 sub-band c)

Technical parameters also referred to in the harmonised standard
No information

Frequency issues
Sub-band a): The harmonised standard needs to define minimum requirements for the spectrum access protocol to lower the interference probability towards audio applications including ALD in 863-865 MHz, with a detection threshold requirement in line with ECC Report 261.