The data rates specified in section 8 shall at least be achieved for transmissions over the distances specified in table 9.2. For the various use cases different antennas may be applied. In the proposal the antenna characteristics (gain, antenna diagrams) to achieve the transmission distance have to be given (see also section 13). Table 9.2: Transmission Ranges for different use cases Use case Required minimum Transmission Distance Intra-Device Communication 10 cm Proximity Communication 10 cm Wireless Fronthauling 200 m Wireless Backhauling 1 km Wireless Data Center 100 m Operational frequency bands This section describes the operational frequency bands. The THz frequency is quite large, with some frequencies exhibiting better propagation qualities than others. Also influencing this issue are practical limits on implementation physics. In this section the operational frequency bands are discussed. Each use case may operate in a different band. The operational frequency bands are from 252 to 325 GHz. The frequency bands 252 to 275 GHz have already an allocation for MOBILE and FIXED services in the radio regulations. The band 275 325 GHz is not allocated to any servcie in the radio regulations, but may be used for active – services, if the conditions in footnote 5.565 of the radio regulations are met. Figure 2: Options for utilization of the available spectrum In Figure 2 three options for the utilization of the available spectrum are introduced. In the first option the whole available bandwidth is dedicated to the communication link of one device. Please note that it’s not required that a proposal utilizes the complete bandwidth of 73 GHz. In option two still the whole bandwidth is dedicated to one communication link but it is split into several subchannels. Again not the whole bandwidth has to be utilized. Such sub-channels can e.g. be realised in an OFDM system or by several RF frontends with smaller bandwidths. This can be beneficial for hardware implementation or for the equalization of the dispersion introduced by the RF frontend in combination with the transmission channel. In the third option sub-channels are dedicated to different links. In a proposal either option 1 or 2 has to be chosen and the reasons for this decision have to be provided together with the exact parameters for the utilization of the frequency band, e.g.
The data rates specified in section 8 shall at least be achieved for transmissions over the distances specified in table 9.2. For the various use cases different antennas may be applied. In the proposal the antenna characteristics (gain, antenna diagrams) to achieve the transmission distance have to be given (see also section 13). Table 9.2: Transmission Ranges for different use cases Use case Required minimum Transmission Distance Intra-Device Communication 10 cm Proximity Communication 10 cm Wireless Fronthauling 200 m Wireless Backhauling 1 km Wireless Data Center 100 m Operational frequency bands This section describes the operational frequency bands. The THz frequency is quite large, with some frequencies exhibiting better propagation qualities than others. Also influencing this issue are practical limits on implementation physics. In this section the operational frequency bands are discussed. Each use case may operate in a different band. The operational frequency bands are from 252 to 325 GHz. The frequency bands 252 to 275 GHz have already an allocation for MOBILE and FIXED services in the radio regulations. The band 275 – 325 GHz is not allocated to any servcie in the radio regulations, but may be used for active services, if the conditions in footnote 5.565 of the radio regulations are met. Figure 2: Options for utilization of the available spectrum In Figure 2 three options for the utilization of the available spectrum are introduced. In the first option the whole available bandwidth is dedicated to the communication link of one device. Please note that it’s not required that a proposal utilizes the complete bandwidth of 73 GHz. In option two still the whole bandwidth is dedicated to one communication link but it is split into several subchannels. Again not the whole bandwidth has to be utilized. Such sub-channels can e.g. be realised in an OFDM system or by several RF frontends with smaller bandwidths. This can be beneficial for hardware implementation or for the equalization of the dispersion introduced by the RF frontend in combination with the transmission channel. In the third option sub-channels are dedicated to different links. In a proposal either option 1 or 2 has to be chosen and the reasons for this decision have to be provided together with the exact parameters for the utilization of the frequency band, e.g.
15-14-0309-12-003d-technical-requirements-document.docx