Page 848 - 5G Basics - Core Network Aspects

2 Transport aspects

Table 11-48.1 – L2 link state transition command (FTU-O to FTU-R)

Length
Name Byte Content
(Bytes)
9 and 10 Two bytes containing the minimal value of downstream BDR
in bytes in L2.1, L2.1_BDR_min (Note 3)

11 and 12 Upstream RMC transmission schedule represented as a bit
map:
0 – indicates an inactive TDD frame
1 – indicates an active TDD frame
The LSB of byte 10 corresponds to the TDD sync frame
(index 0). The MSB of byte 10 corresponds to the TDD
frame with index 7. The LSB of byte 9 corresponds to the
TDD frame with index 8 (see clause 10.6). Bits
corresponding with indices ≥ MSF shall be set to 0.
13 One octet containing the upstream L2 PSD power reduction
(L2_PSDRus) value in the range from 0 to 10 dB in units of 1
dB, represented as an unsigned integer.
14 and 15 Two bytes containing the last subcarrier index on which the
upstream L2 PSD power reduction is applied (fL2_PSDR-US).
Valid values are in the range from 0 to NSC-1.

16 [0000 000a]
a = Link state transition type:
- a = 0: from L0 to L2.1N.
- a = 1: from L0 to L2.1B.
Variable Used subcarriers, relative gain compensation factors (ri),
and proposed bit loading for the downstream RMC symbols
(see Table 11-48.3)
Variable DTU framing parameters, and bit loading for the upstream
RMC symbols (see Table 11-48.2)

L2.2-Entry-Request Variable 2 0216 (Note 1)
3 Segment code (SC)
4 Time interval between two adjacent downstream RMC
symbols (or upstream RMC symbols) represented in the
number of superframes X (see clause 13.4.2.1), indicated as
an unsigned integer in the range from 1 to 32 (Note 2)

5 and 6 Two bytes containing the minimum BDR in bytes in L2.2,
L2.2_BDR_min (Note 3)
Variable Used subcarriers and proposed bit loading for the
downstream RMC symbols (see Table 11-48.4) (Note 4)

Variable DTU framing parameters, and bit loading for the upstream
RMC symbols (see Table 11-48.2)

L2.1-Exit-Request 2 2 0316 (Note 1)
L2.2-Exit-Request 3 2 0416 (Note 1)

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