Section: 16.15.4.2.1 Assistance Information
Content: In order to enhance the scheduling of uplink resources for XR, the following improvements are introduced: - One additional buffer size table to reduce the quantisation errors in BSR reporting (e.g. for high bit rates): - Whether, for an LCG, the new table can be used in addition to the regular one is configured by the gNB; - When the new table is configured for an LCG, it is used whenever the amount of the buffered data of that LCG is within the range of the new table, otherwise the regular table is used. - Delay Status Report (DSR) of buffered data via a dedicated MAC CE: - Triggered for an LCG when the remaining time before discard of any buffered PDCP SDU goes below a configured threshold (threshold configured per LCG by the gNB); - When triggered for an LCG, reports the amount of data buffered with a remaining time before discard below the configured threshold, together with the shortest remaining time of any PDCP SDU buffered. - Reporting of uplink assistance information (jitter range, burst arrival time, UL data burst periodicity) per QoS flow by the UE via UE Assistance Information.