Can PSM timers be dynamically set?


  • “T3324” is the timer for the PSM Activity Timer (how long the Idle Mode lasts before PSM mode is started). This value is currently set to 30 seconds default in Germany. The UE may request a value, but currently this is overwritten by the network default. This behavior will change in the future.

    “T3412” is the timer for the Long Periodic TAU (how long the UE can stay ATTACHed before the packet core releases the session. This value is currently set to 310 hours default in Germany. The UE may request a value, but currently this is overwritten by the network default. This behavior will change in the future.

    Both as dynamic PSM AT and dynamic LP-TAU will allow to retain the values proposed by UE. Both features are scheduled to be introduced in part of the Deutsche Telekom’s footprint in H1/2019.


 

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