5.15 Jitter buffer management behaviour

26.1313GPPRelease 18RequirementsTerminal acoustic characteristics for telephonyTS

For MTSI-based speech-only with LTE, NR or WLAN access, a jitter buffer is used in receiving to handle the variation in packet receiver timing (see clause 8 of TS 26.114 [17]).

If the jitter buffer management (JBM) behaviour is evaluated, the following statistics shall be reported for conditions specified in TS 26.132:

– Delay histogram (on a per sentence basis)

– Quality loss histogram (on a per sentence pair basis)

and all measured delay and quality loss values for these conditions shall be reported as a function of measurement time, together with minimum and maximum values.

The relevant test is described in 3GPP TS 26.132.