Page 914 - 5G Basics - Core Network Aspects

2 Transport aspects

Table 12-18 – FTU-R MS message SPar(2) bit definitions

ITU-T G.994.1 SPar(2) bit Definition of SPar(2) bit
Number of SOC symbol Always set to ZERO.
repetitions (RS)
Number of DS Always set to ZERO.
initialization data symbols
(sds)
Downstream RMC offset Always set to ZERO.
CD time out Shall be set to ONE if and only if this bit is set to ONE in both the last previous CLR
message and the last previous CL message. If set to ONE, indicates that the
CD_time_out_1 value and the CD_time_out_2 value to be used by both the FTU-O and
the FTU-R shall be communicated in the corresponding CD time out 1 and CD time out
2 NPar(3) fields.
If set to ZERO, the default CD_time_out_1 value of ten seconds and the default
CD_time_out_2 value of twenty seconds shall be used.

Table 12-19 – FTU-R MS message NPar(3) bit definitions

ITU-T G.994.1 SPar(2) bit Definition of NPar(3) bits
Profiles Each valid profile is represented by one bit in a field of 6 bits. The valid profiles are:
106a, 106b and 212a. The profile selected by the FTU-R is indicated by setting its
corresponding bit to ONE.
CE length multiplier Each bit of this 9-bit field represents a CE length multiplier m, excluding the default
value 10 (see clause 10.4.4). The FTU-R shall indicate the selected CE length multiplier
by setting the corresponding bit to ONE. All other bits in this 9-bit field shall be set to
ZERO.
The selected CE length multiplier shall be a CE length multiplier that was indicated as a
supported value in both the last previous CLR message and the last previous CL
message.
Number of symbol Each bit of this 6-bit field represents an MF value other than 36. The FTU-R shall
periods in TDD frame indicate the selected MF value by setting the corresponding bit to ONE. All other bits of
this 6-bit field shall be set to ZERO.
The selected MF value shall be an MF value that was indicated as a supported value in
both the last previous CLR message and the last previous CL message.
CD time out 1 This 3-bit field shall be coded as an unsigned integer n=0 to 7, indicating that the
CD_time_out_1 value that shall be used by both the FTU-O and FTU-R equals (n+1)
times five seconds. The CD_time_out_1 value indicated shall not exceed the lowest of
the maximum CD_time_out_1 values indicated in the last previous CLR and the last
previous CL message.
NOTE – The maximum CD_time_out_1 value indicated in the CLR message is the highest valid
value and hence implies no bound on the value indicated in the MS message.

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