TS 26.247: Inconsistencies in the naming of keys for "QoE for Progressive Download and DASH"

[dsilhavy]

Description

TS 26.247 Section 10 defines "QoE for Progressive Download and DASH". During the implementation of the metrics defined in Section 10.2 we found a few inconsistencies between the definition of the keys in the respective tables and the definition of the keys in the XSD schemas. In the following I am listing our findings. My reference is 3GPP TS 26.247 V19.1.0 (2026-03).

10.2.4 Average Throughput

Problem	Definition in Table 27	Definition in Listing 10.6.2-1
Camel Case	numbytes	numBytes
Camel Case	activitytime	activityTime
Camel Case	inactivitytype	inactivityType

10.2.7 Playlist

Problem	Definition in Table 30	Definition in Listing 10.6.2-1
Camel Case	starttype	startType
Camel Case	representationid	representationId
Camel Case	subreplevel	subrepLevel
Camel Case	playbackspeed	playbackSpeed
Camel Case	stopreason	stopReason
Camel Case and name cut off	stopreasonoth	stopReasonOther
Camel Case	inactivitytype	subrepLevel

10.2.8 MPD information

Problem	Definition in Table 31	Definition in Listing 10.6.2-1
Camel Case	representationid	representationId
Camel Case	subreplevel	subrepLevel
The description is missing the frameRate attribute defined in Listing 10.6.2-1	Mpdinfo	Mpdinfo

10.2.10 Device information

Listing 10.6.2-2: "Additional QoE metrics XML schema" defines the schema for DeviceInformationEntryType twice.