Page 1063 - 5G Basics - Core Network Aspects

Transport aspects 2

Table Z.12 – Valid battery operation status driven link state transitions

Permitted battery To
operation status driven link
state transitions L0 L2.1N L2.1B L2.2

L0 – N/A Normal to Battery N/A
From L2.1N N/A – Normal to Battery N/A
L2.1B N/A Battery to Normal – N/A
L2.2 N/A Battery to Normal N/A –

In each of these four link states, one battery operation state driven link state change trigger criterion is
defined:
1. BAT_TRIGR (LinkState)

The LRCC-O shall request a transition L0_L2.1B or L2.1N_L2.1B only on detection of a TRUE BAT signal and
after a trigger persistency check with period L0_L2.1B_TRIGR_PERSIST_BAT or
L2.1N_L2.1B_TRIGR_PERSIST_BAT respectively.

The LRCC-O shall request transition L2.1B_L2.1N or L2.2_L2.1N only on detection of a FALSE BAT signal and
after trigger persistency check for a period L2.1B_L2.1N_TRIGR_PERSIST_BAT or
L2.2_L2.1N_TRIGR_PERSIST_BAT respectively.
Trigger criteria for the valid battery operation status driven low power mode state transitions of Table Z.12
are shown in Table Z.13.

Table Z.13 – Trigger criteria for the valid battery operation status driven link state transitions

Trigger BAT criterion Persistency criterion

L0_L2.1B BAT=TRUE TRUE for period > L0_L2.1B_TRIGR_PERSIST_BAT

L2.1N_L2.1B BAT=TRUE TRUE for period > L2.1N_L2.1B_TRIGR_PERSIST_BAT
L2.1B_L2.1N BAT=FALSE FALSE for period > L2.1B_L2.1N_TRIGR_PERSIST_BAT

L2.2_L2.1N BAT=FALSE FALSE for period > L2.2_L2.1N_TRIGR_PERSIST_BAT

Z.7 Link state management and reporting parameters
The management parameters and their valid values for configuration of the link state operation are listed in
Table Z.14.
A DPU supporting Annex Z shall support these management parameters and all their valid values.

1053