Page 1034 - 5G Basics - Core Network Aspects

2 Transport aspects

Table X.1 – Annex X profiles for operation over coaxial cables

Parameter value for profile Reference
Parameter
106c 212c

Maximum aggregate downstream transmit See clause X.12.3
+2 dBm +2 dBm
power (dBm)
Maximum aggregate upstream transmit See clause X.12.3
+2 dBm +2 dBm
power (dBm)
Precoding type Not applicable Not applicable
Subcarrier spacing (kHz) 51.75 51.75 See clause 10.4.2

Aggregate net data-rate (ANDR) capability 1 000 Mbit/s 2 000 Mbit/s See clause 3.2.2
(Note 1) (Note 1)
Maximum number of FEC codewords in one 16 16 See clause 8.2
DTU (Qmax)
Parameter (1/S)max downstream 12 24 (Note 2)

Parameter (1/S)max upstream 12 24 (Note 2)
Index of the lowest supported downstream (Note 3)
43 43
data-bearing subcarrier (lower band-edge
(2.22525 MHz) (2.22525 MHz)
frequency (informative))
Index of the lowest supported upstream (Note 3)
43 43
data-bearing subcarrier (lower band-edge
(2.22525 MHz) (2.22525 MHz)
frequency (informative))
Index of the highest supported downstream (Note 3)
2047 4095
data-bearing subcarrier (upper band-edge
(105.93225 MHz) (211.91625 MHz)
frequency (informative))
Index of the highest supported upstream (Note 3)
2047 4095
data-bearing subcarrier (upper band-edge
(105.93225 MHz) (211.91625 MHz)
frequency (informative))
MF = 36 MF = 23 MF = 36 MF = 23 See clause 10.5
Maximum number of eoc bytes per direction
per logical frame period (Note 4) 1500 1100 1500 1100

NOTE 1 – Achievable aggregate net data rate will depend on channel conditions and system configurations.
NOTE 2 – The value of 1/S is the number of FEC codewords transmitted during one symbol period and shall be computed as the
total number of data bytes loaded onto a discrete multitone (DMT) symbol, which is equal to the maximum of B D and B DR divided
by the applied FEC codeword size N FEC (see clauses 9.3 and 9.5). Parameter (1/S) max defines the maximum value of 1/S.
NOTE 3 – The allowed frequency band is further determined by applicable PSD mask requirements specified in [ITU-T G.9700],
constrained by the capabilities guaranteed by the profile(s) that the implementation supports. The band-edge frequency in MHz
appears in parentheses below the subcarrier index (informative).
NOTE 4 – Other values of M F and the corresponding maximum number of eoc bytes are for further study.

X.5.2 Profiles for operation over twisted-pair cables in a crosstalk-free environment

ITU-T G.9701 transceivers for operation over twisted-pair cables in a crosstalk-free environment shall
comply with at least one profile specified in Table 6-1 except that precoding is not applicable. Compliance
with more than one profile is allowed.

X.5.3 Profile compliance
See clause § 6.2 for rules regarding profile compliance.

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