CONTENTS - REPORT ITU-R M.2417-0 - Technical and operational characteristics of land-mobile service applications in the frequency range 275-450 GHz

Policy on Intellectual Property Right (IPR)
Fixed service
Radio astronomy
Remote sensing systems
1     Introduction
2     Scope
3     Related Recommendations and Reports
4     List of acronyms and abbreviations
5     Frequency ranges
10
3 to 30 GHz
Centimetric waves
11
30 to 300 GHz
Millimetric waves
12
300 to 3 000 GHz
Decimillimetric waves
6     Overview of land-mobile service applications in the frequency range 275-450 GHz
        6.1     Close proximity mobile systems in the frequency band on 275-325 GHz and 275‑450 GHz
                  6.1.1     KIOSK downloading mobile system
                  6.1.2     Ticket gate downloading mobile system
                  6.1.3     Inter-chip communication system
        6.2     Intra-device communications
        6.3     Wireless links for data centers
7     System characteristics
        7.1     Close proximity mobile systems (CPMSs) operating in the frequency range 275-450 GHz
Frequency band (GHz)
275-325
275-450
Deployment density¹
0.6 devices/km²
0.6 devices/km²
Tx output power density (dBm/GHz)
˗3.8….6.9
˗10.1…6.7
Max. e.i.r.p. density(dBm/GHz)
26.2…...36.9
19.9…36.7
Duplex Method
FDD/TDD
FDD/TDD
Modulation
OOK-SC/BPSK-SC/QPSK-SC/16QAM-SC/64QAM-SC
BPSK-OFDM/QPSK-OFDM/ 16QAM-OFDM/32QAM-OFDM/64QAM-OFDM
OOK-SC/BPSK-SC/QPSK-SC/16QAM-SC/64QAM-SC/8PSK-SC/8APSK-SC
BPSK-OFDM/QPSK-OFDM/ 16QAM-OFDM/32QAM-OFDM/64QAM-OFDM
Average distance between CPMS fixed and mobile devices (m)
0.1
0.1
Maximum distance between CPMS fixed and mobile devices (m)
1
1
Antenna height (m)
1…2
-
Antenna beamwidth (degree)
3…10
5…90
Antenna elevation (degree)
±90
±90
Frequency reuse
1
1
Antenna type
Horn
Horn
Antenna pattern
Gaussian
Gaussian
Antenna polarization
Linear
Linear
Indoor CPMS fixed device deployment (%)
100
90
Feeder loss (dB)
2
2
Maximum CPMS fixed/mobile device output power (dBm)
10
10
Channel bandwidth (GHz)
2.16/4.32/8.64/12.96/17.28/ 25.92/51.8
2.16/4.32/8.64/12.96/17.28/25.92/51.84/69.12/103.68
Transmitter spectrum mask
see Annex 4
see Annex 4
Maximum CPMS fixed device antenna gain (dBi)
30
30
Maximum CPMS mobile device antenna gain (dBi)
15
15
Maximum CPMS fixed device output power (e.i.r.p.) (dBm)
40
40
Maximum CPMS mobile device output power (e.i.r.p.) (dBm)
25
25
Average activity factor (%)
0.76
0.2
Average CPMS fixed device power (dBm (e.i.r.p))
20
20
Receiver noise figure typical (dB)
15
15
¹ Detailed information of deployment density is shown in Annex 3.
        7.2     Intra-device communications
Frequency band (GHz)
275-450
Deployment density
0.23⁽¹⁾ /km²
Maximum device output power (dBm)
10
Maximum device output power (e.i.r.p.) (dBm)
30
Maximum Tx output power density (dBm/GHz)
˗10.1…6.7
Maximum e.i.r.p. density (dBm/GHz)
19.9…36.7
Indoor Deployment (%)
50
Duplex Method
TDD, FDD, SDD
Modulation
OOK-SC/BPSK-SC/QPSK-SC/16QAM-SC/64QAM-SC
8PSK-SC/8APSK-SC
Maximum distance between devices
<1 m
Antenna height (m)
1…3
Antenna beamwidth (degree)
15…180 (expected)
Frequency reuse
1
Antenna pattern
Gaussian
Antenna polarization
Linear
Channel bandwidth (GHz)
2.16/4.32/8.64/12.96/17.28//25.92/51.84/69.12/103.68
Maximum device antenna gain (dBi)
20
Typical expected device antenna gain (dBi)
6
Maximum device activity (%)
100
Receiver noise figure typical (dB)
10⁽²⁾
⁽¹⁾ The deployment density is estimated as an average based on assuming that everyone thousandths citizen in Germany is using such a device. In highly populated cities the density could increase to e.g. 3.95/km²under the same assumptions.
⁽²⁾ Also systems with a noise figure as low as 8 dB have been reported in publications. This value is a worst case of the published parameters.
        7.3     Wireless links in data centers
Frequency band (GHz)
275-450
Deployment density
0.07⁽¹⁾ /km²
Maximum device output power (dBm)
10
Maximum device output power (e.i.r.p.) (dBm)
40
Tx output power density (dBm/GHz)
˗10.1…6.7
e.i.r.p. density (dBm/GHz)
9.9…26.7
Duplex Method
TDD, FDD, SDD
Modulation
OOK-SC/BPSK-SC/QPSK-SC/16QAM-SC/64QAM-SC
8PSK-SC/8APSK-SC
Maximum distance between devices
100 m
Antenna beamwidth (degree)
< 25 (expected)
Frequency reuse
1
Antenna pattern
Gaussian
Antenna polarization
Linear
Indoor deployment (%)
100
Channel bandwidth (GHz)
2.16/4.32/8.64/12.96/17.28/ 25.92/51.84/69.12/103.68
Maximum device antenna gain (dBi)
30
Maximum device activity (%)
100
Receiver noise figure typical (dB)
10²
⁽¹⁾     Based on an evaluation in Germany [3] there are 2170 data centres with more than 100 servers. Assuming that in each 10 links are deployed and taking the area of Germany into account a density of approx. 0.07 links per k m²
⁽²⁾     Also systems with a noise figure as low as 8 dB have been reported in publications. This value is a worst case of the published parameters.
8     Summary of spectrum needs for land-mobile service applications in the 275-450 GHz frequency range
CPMS application
50 GHz (see Annex 5)
Intra-device communication
50 GHz (see Note 1)
Wireless links for data centers
50 GHz (see Note 1)
Note 1: For intra-device communication and data center wireless link center applications operating simultaneously in close proximity, different channels should be used.
9     Bibliography
Annex 1 Examples of radio-frequency channel arrangement
Annex 2 Measurement results of antenna patterns at 300 GHz
Annex 3 Deployment density and activity factor of KIOSK downloading systems