concludes that it is unnecessary to maintain the transmitter ID requirement whose purpose was to avoid interference.) - No network identifier shall be included. - Network topology is always limited to two active devices. - No mechanisms for multiple-access nor bandwidth reservation. - No CSMA/CA and no periodic transmissions such as beacons after link establishment. Note: When the transmission time is sufficiently short (e.g., < 1sec), the system can regard the channel response as constant and beacon transmission is not necessary. . - Link shall be disconnected immediately when the devices are drawn apart. Example of detection of device approach: utilization of near-field communication (NFC) As described above, fast link establishment within the required time duration is required in the kiosk application. In addition to link establishment realized purely through 60 GHz, field communications (NFC) can also be used to assist in detecting the approach of a portable terminal towards a kiosk terminal. NFC is widely used at the toll gates in train stations and the NFC modules are included in most cellular phone terminals. Figure 9 illustrates the link setup utilizing NFC. When the user’s portable terminal approaches and enters the NFC communications range, the NFC modules of both sides establishes communications and the passive module inside the portable terminal turns on the 60 GHz module within the same portable terminal. Next, the 60 GHz modules complete their own link setup and start the data transfer. The NFC communications may also be used for user identification (authentication/authorization). In such case, the kiosk terminal may determine which file is to be transferred to the user after the user identification. The NFC communications can also execute payment functions. Figure detection of approach NFC Spatial division transmission method for 100 Gbps To attain higher throughput, higher multilevel modulation and spatial division multiplexing such as MIMO should be utilized. shows the combination of modulation and MIMO for higher transmission rates.This table is based on the frequency channels for the 60-GHz band shown in . By utilizing MIMO, more than 100 Gbps rates becomes possible. As described above for the kiosk application, the propagation channel will not be multipath-rich. Thus the use of short-range MIMO transmission employing appropriate element spacing in the array antennas is effective [5]. Without spatial division but only multilevel modulation and channel aggregation, it is difficult to achieve 100 Gbps. 1024-QAM with four-channel aggregation can only provide 45
concludes that it is unnecessary to maintain the transmitter ID requirement whose purpose was to avoid interference.) - No network identifier shall be included. - Network topology is always limited to two active devices. - No mechanisms for multiple-access nor bandwidth reservation. - No CSMA/CA and no periodic transmissions such as beacons after link establishment. Note: When the transmission time is sufficiently short (e.g., < 1sec), the system can regard the channel response as constant and beacon transmission is not necessary. . - Link shall be disconnected immediately when the devices are drawn apart. Example of detection of device approach: utilization of near-field communication (NFC) As described above, fast link establishment within the required time duration is required in the kiosk application. In addition to link establishment realized purely through 60 GHz, communications (NFC) can also be used to assist in detecting the approach of a portable terminal towards a kiosk terminal. NFC is widely used at the toll gates in train stations and the NFC modules are included in most cellular phone terminals. Figure 9 illustrates the link setup utilizing NFC. When the user’s portable terminal approaches and enters the NFC communications range, the NFC modules of both sides establishes communications and the passive module inside the portable terminal turns on the 60 GHz module within the same portable terminal. Next, the 60 GHz modules complete their own link setup and start the data transfer. The NFC communications may also be used for user identification (authentication/authorization). In such case, the kiosk terminal may determine which file is to be transferred to the user after the user identification. The NFC communications can also execute payment functions. Figure detection of approach NFC Spatial division transmission method for 100 Gbps To attain higher throughput, higher multilevel modulation and spatial division multiplexing such as MIMO should be utilized. shows the combination of modulation and MIMO for higher transmission rates.This table is based on the frequency channels for the 60-GHz band shown in . By utilizing MIMO, more than 100 Gbps rates becomes possible. As described above for the kiosk application, the propagation channel will not be multipath-rich. Thus the use of short-range MIMO transmission employing appropriate element spacing in the array antennas is effective [5]. Without spatial division but only multilevel modulation and channel aggregation, it is difficult to achieve 100 Gbps. 1024-QAM with four-channel aggregation can only provide 45 field
15-14-0528-00-003d-modification-of-tg3d-ard-after-july-meeting.docx