RAN2 agrees one threshold set can be configured for type-2 and type-3

The work concerns burst information reporting for mobile artificial intelligence (AI) traffic. The meeting report records the agreement: "Single set of triggering thresholds can be configured for both type-2 and type-3." The report names type-2 and type-3 as data types but does not define them here. The report marks threshold applicability for each data type for further study (FFS). Different thresholds can be configured for different logical channel groups (LCGs), according to the report.

Source: R2-2607786, Session Chair (Huawei), 3GPP TSG RAN WG2 #135-bis, meeting report, agenda item 8.5.2.

Burst information reporting (BIR) uses a medium access control (MAC) control element (CE). The meeting report says this BIR MAC CE contains all information the user equipment (UE) has when constructing it, regardless of trigger.

vivo proposed triggering reporting when estimated data arrival time, data volume, or both meet corresponding thresholds. China Telecom observed: "Threshold-based triggering alone may not be sufficient to prevent frequent burst information reporting when burst information or prediction results are frequently updated." 1Finity proposed that one BIR MAC CE may contain several bursts arriving in the layer 2 (L2) buffer within a short time. Those bursts may come from multiple quality of service (QoS) flows mapped to logical channels belonging to one LCG. The 1Finity contribution was not treated at RAN2 #135-bis.

Source: R2-2606691, China Telecom, 3GPP TSG RAN WG2 #135-bis. © China Telecom.