Power Saving Mode (PSM) Part II
Home LTE NB-IoT 5G(NR-NSA) Hi Guys, today we learn more about PSM in Nb-IoT. if you are new at my blog please go through my Power Saving Mode (PSM) Part I for more details. How does PSM actually work? · A UE is PSM enabled only when it sends T3324 timer in Attach/TAU request. · Power Saving Mode configured by providing T3324 active and T3412 extended timers or by configuring "UE requested" timer values. · Network provides two options: accept UE requested values or MME configured values for these timers. · When PSM configuration is enabled in the Network, the MME accepts the use of PSM and a UE requested value of T3324 timer is received in Attach/TAU request. · When PSM is enabled and the Network is configured to accept UE requested values of timers, if T3412 extended timer is not received from the UE along with T3324 in Attach/TAU request, then M