Page 700 - 5G Basics - Core Network Aspects

2 Transport aspects

Table 6-1 – ITU-T G.9701 profiles

Parameter value for profile (Note 1) Reference
Parameter
106a 106b 212a
NOTE 1 – Other profiles are for further study.
NOTE 2 – Achievable aggregate net data rate will depend on channel conditions and system configurations.
NOTE 3 – 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 multitoned (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 4 – 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 5 – Other values of M F and the corresponding maximum number of eoc bytes are for further study.
NOTE 6 – Supporting profile 106b with its maximum aggregate transmit power of +8 dBm may lead to increased power
consumption at the transmitter or the receiver or both relative to profile 106a.

6.2 Profile compliance

To be compliant with a selected profile, an FTU-O shall:
• Be capable of transmitting data on all subcarriers, with indices within the range from the index of
the lowest supported downstream data-bearing subcarrier and the index of the highest supported
downstream data-bearing subcarrier;
• Support the specified type of precoding;

• Support all values of 1/S up to and including (1/S)max upstream and (1/S)max downstream;
• Support any number of FEC codewords per DTU less than or equal to the value of Qmax specified in
the profile; and

• Support its aggregate net data-rate (ANDR) capability.
To be compliant with a selected profile, an FTU-R shall:
• Be capable of transmitting data on all subcarriers, with indices within the range from the index of
the lowest supported upstream data-bearing subcarrier and the index of the highest supported
upstream data-bearing subcarrier;
• Support the specified type of precoding;
• Support all values of 1/S up to and including (1/S)max upstream and (1/S)max downstream;
• Support any number of FEC codewords per DTU less than or equal to the value of Qmax specified in
the profile; and
• Support its ANDR capability.
Furthermore, an FTU complying with a selected profile shall:

• Use only the subcarrier spacing value specified in the profile;
• Transmit in a passband that includes only subcarriers specified for the profile, with indices within
the range from the index of the lowest supported downstream (upstream) data-bearing subcarrier
and the index of the highest supported downstream (upstream) data-bearing subcarrier;
• Use a value of 1/S less than or equal to the value of (1/S)max specified in the profile;

• Use a number of FEC codewords per DTU less than or equal to the value of Qmax specified in the
profile; and
• Transmit at a power level within the maximum aggregate transmit power specified in the profile.

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