Page 959 - 5G Basics - Core Network Aspects

Transport aspects 2

Table 12-50 – RMC path descriptor

Byte Field Format Description

1 KRMC One byte Contains the value of KFEC for the RMC path.
Field 4 "RMCPds" is a field that contains the PMS-TC parameters required for RMC in the downstream
direction. The "RMC path descriptor" format specified in Table 12-50 shall be used.
Field 5 "Upstream ACK window shift" is a field that contains the ACK window shift in symbol periods for the
upstream direction (see clause 9.7), expressed as an unsigned integer.
Field 6 "Upstream MNDSNOI" is the minimum number of data symbols in the NOI for the upstream
direction. Valid values are zero, one and two. This number does not include the RMC symbol.

12.3.4.2.6 R-PMS
The R-PMS message conveys the initial PMS-TC parameter settings that shall be used in the downstream
direction during showtime. The list of parameters carried by the R-PMS message is shown in Table 12-51.

Table 12-51 – R-PMS message

Field Field name Format
1 Message descriptor Message code
2 DPds Data path descriptor
3 Downstream ACK window shift One byte
4 Downstream MNDSNOI One byte

Field 1 "Message descriptor" is a unique one-byte code (8816) that identifies the message. See Table 12-7
for a complete list of codes.
Field 2 "DPds" is a field that contains the PMS-TC parameters required for data path in the downstream
direction. The data path descriptor format specified in Table 12-49 shall be used.
Field 3 "Downstream ACK window shift" is a field that contains the ACK window shift in symbol periods for
the downstream direction (see clause 9.7), expressed as an unsigned integer.
Field 4 "Downstream MNDSNOI" is the minimum number of data symbols in the NOI for the downstream
direction. Valid values are 0, 1 and 2. This number does not include the RMC symbol.

12.3.4.2.7 O-PMD
The O-PMD message conveys the initial PMD parameter settings that shall be used in the upstream
direction during showtime. The list of parameters carried by the O-PMD message is shown in Table 12-52.

Table 12-52 – O-PMD message

Field Field name Format
1 Message descriptor Message code
2 Bit-loading table for data symbol during NOI ceiling(NSCus/2) bytes
3 Number of RMC US subcarriers (NSCRus) Two bytes

4 Upstream RMC tone set (RTSus) 3 × ceiling(NSCRus/2) bytes coded as follows:
• Bits 0-11: rsc2n–1
• Bits 12-23: rsc2n
5 Bit-loading table for RMC US subcarriers ceiling(NSCRus/2) bytes

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