Page 749 - 5G Basics - Core Network Aspects
P. 749

Transport aspects                                              2


                                             Table 9-12 – FRA adjustment data

                  Field name              Format                              Description

             BLT status            One byte: [aa00 0000]   Bit-loading adjustment status, see clause 13.3.1.1:
                                                         aa = 00 – no adjustment
                                                         aa = 01 – decrease the bit-loading per sub-band by the
                                                         specified parameter value
                                                         aa = 10 – limit the maximum bit loading by the specified
                                                         parameter value
                                                         aa = 11 – reserved by ITU-T
             SubBand01Params       One byte: [bbbb aaaa]   aaaa = parameter value to be used for sub-band 0 (Note)
                                                         bbbb = parameter value to be used for sub-band 1 (Note)
             SubBand23Params       One byte: [bbbb aaaa]   aaaa = parameter value to be used for sub-band 2 (Note)
                                                         bbbb = parameter value to be used for sub-band 3 (Note)
             SubBand45Params       One byte: [bbbb aaaa]   aaaa = parameter value to be used for sub-band 4 (Note)
                                                         bbbb = parameter value to be used for sub-band 5 (Note)
             SubBand67Params       One byte: [bbbb aaaa]   aaaa = parameter value to be used for sub-band 6 (Note)
                                                         bbbb = parameter value to be used for sub-band 7 (Note)
             NOTE – The 4-bit SubBandParams fields specify the parameter values to be used for implementing the bit-loading adjustment
             over the various sub-bands as defined by the BLT status field. The valid parameter values are integers in the range between zero
             and 12, inclusive.


                     Table 9-13 – Reply to FRA request command for the NOI (sent by the FTU-O and FTU-R)

                   Field name              Format                             Description

             Command header      One byte: [00 aaaaaa]   aaaaaa = 0516
             FRA response data   One byte: [bbbb aaaa]   aaaa = LFDC (see clause 13.3.1.1.4) to the implementation of
                                                         a new active configuration. (Note 1)
                                                         bbbb = FCCC identifier of the configuration to be applied in
                                                         the logical frame when LFDC reaches the value zero. The
                                                         value of FCCC shall be the one received in the FRA request
                                                         command.
             NOTE – The transmitter reply shall be repeated in subsequent logical frames with a decrementing count of LFDC until the count
             reaches the value zero.


                     Table 9-14 – Reply to FRA request command for the DOI (sent by the FTU-O and FTU-R)

                  Field name              Format                              Description

             Command header       One byte: [00 aaaaaa]   aaaaaa = 0616
             FRA response data    One byte: [bbbb aaaa]   aaaa = LFDC (see clause 13.3.1.1.3) to the implementation of
                                                          a new active configuration. (Note)
                                                          bbbb = FCCC identifier of the configuration to be applied in
                                                          the logical frame when LFDC reaches the value of zero. The
                                                          value of FCCC shall be the one received in the FRA request
                                                          command.
             NOTE – The transmitter reply shall be repeated in subsequent logical frames with a decrementing count of LFDC until the count
             reaches the value zero.









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