Page 793 - 5G Basics - Core Network Aspects

Transport aspects 2

Figure 10-21(a) depicts an example of the reported bits for a block of VF samples for different padding
types, with F_block=2, B_min=2, B_max=7, L_w=5, rounding=1 and Figure 10-21(b) uses L_w=6.

F_block = 2 , B_min = 2 , B_max = 7 , L_w = 5 , rounding = 1
MSB LSB MSB LSB MSB LSB
B_max = 7 5 4 3 2 1 0 B_max = 7 5 4 3 2 1 0 B_max = 7 5 4 3 2 1 0

0 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1
1 1 1 1 0 0 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 0 1 1

S = 5 B_L = 2 S = 5 B_L = 1 S = 5 B_L = 1
B_M = 5 B_M = 5 B_M = 5

0 1 1 1 0 1 1 1 1 0 1 1 1 1
1 1 0 1 1 1 0 1 0 1 1 0 1 0
L_w = 5, B_min = 2, L_w = 5, B_min = 2, L_w = 5, B_min = 2,
padding = 0 padding = 1, with sign-extension padding = 1, with zero-padding
NOTE 1 – The value of shown in this example is assumed to be the largest value in S F_block = 2.
NOTE 2 – Use of padding = 0 (padding disabled) with F_block = 1 is an invalid configuration.
a)

F_block = 2 , B_min = 2 , B_max = 7 , L_w = 6 , rounding = 1
MSB LSB MSB LSB MSB LSB
B_max = 7 5 4 3 2 1 0 B_max = 7 5 4 3 2 1 0 –1 B_max = 7 5 4 3 2 1 0 –1

0 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1 0 0 0 0 1 1 1 1 1 0
1 1 1 1 0 0 1 1 1 1 1 1 0 0 1 1 0 1 1 1 1 0 0 1 1 0

S = 5 B_L = 2 S = 5 B_L = 0 S = 5 B_L = 0
B_M = 5 B_M = 5 B_M = 5

0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1
1 1 0 1 1 1 0 0 1 1 1 1 0 0 1 1
L_w = 6, B_min = 2, L_w = 6, B_min = 2, L_w = 6, B_min = 2,
padding = 0 padding = 1, with sign-extension padding = 1, with zero-padding
NOTE 1 – The value of shown in this example is assumed to be the largest value in S F_block = 2.
NOTE 2 – Use of padding = 0 (padding disabled) with F_block = 1 is an invalid configuration.
b) G.9701(14)-Cor.1(15)_F10-21

Figure 10-21 – Example of reported bits for a block of VF samples for
different padding types with rounding

10.3.2.3.2.2 Grouping of VF samples in case of DFT output sample reporting
The values of the reported VF sample components (f_x, f_y) shall be formatted using the two's-
complement representation containing L_w bits. The parameter B_M shall be calculated corresponding to
the definition of DFT output samples (see section 10.3.2.2), and its value shall always satisfy: 0  B_M  15.
The value of B_L shall be set as: B _ L  B _ M  L _ w  1.

NOTE – In case of DFT output sample reporting (this clause), the values B_M and B_L have a different meaning than in
the case of error samples reporting (clause 10.3.2.3.2.1), although the same name is used.
The FTU-R shall implement padding using sign extension.

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