Page 1058 - 5G Basics - Core Network Aspects

2 Transport aspects

Table Z.3 – Information flows at the R reference point

Primitive name Content Direction

Requests queue status information for all US
QS.request (Note 1) DRRUSF → TMF-R
QoS queues
Queue status information for all US QoS queues
QS.response in response to QS.request request (See Table TMF-R → DRRUSF
Z.4)

NOTE – QS.request is a forwarding of the DRRus.request (see Figure Z.5), which is asserted by the FTU-R periodically at a rate of
once per N DRR logical frames and is synchronised with upstream RMC transmission.

Table Z.4 – Traffic monitoring parameters at the R reference point

Primitive name Primitive parameter Description
QS.response QSR-US-QF Array [1  NQOSQus] of QFU Q the number of bytes in
the L2+ upstream QoS Queue Q, for all provisioned
queues in the NT, measured on receipt of the
QS.request.

Z.5.2.3 The O reference point
Traffic monitoring primitives at the O reference point are the same as for the O reference point as defined
in Table Z.1 and Table Z.2.
Link state primitives at the O reference point are listed in Table Z.5.

Table Z.5 – Link state primitives at the O reference point

Primitive name (parameters) Content Direction
Boolean: True if at least one of the
FTU-R or PSE indicates it is
Battery Operation (BAT) DRA → LRCC-O
operating on reserve battery
power. False otherwise.
Request link to transition to
LinkState.request (LinkState) LRCC-O → DRA
LinkState (Note 1)
Confirmation whether or not the
LinkState.confirm (LinkStateResult) link has transitioned to LinkState DRA → LRCC-O
(Note 2)
NOTE 1 – LinkState  {L0, L2.1N, L2.1B, L2.2}
NOTE 2 – LinkStateResult  {L0, L2.1N, L2.1B, L2.2, FAIL} and is either equal to LinkState or equal to ''FAIL''.

Z.5.2.4 The R reference point
Traffic monitoring primitives at the R reference point are the same as for the γR reference point defined in
Table 8-4. They are also listed in Table Z.6 for introduction of the DRRUSF.

Table Z.6 – Traffic monitoring primitives at the R reference point

Primitive name (parameters) Content Direction
DRRus.request Described in Table 8-4 FTU-R → DRRUSF
DRRus.confirm (DRRus) Described in Table 8-4 DRRUSF → FTU-R
DRRus.indicate (N DRR, N RM) Described in Table 8-4 FTU-R → DRRUSF
DRR.config.request (DRRdata) Described in Table 8-4 FTU-R → DRRUSF
DRR.config.confirm (DRRdata) Described in Table 8-4 DRRUSF → FTU-R

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