LTE: How TAU procedure can differ for different eNodeBs/cells of a tracking area ?

Question

I know tracking area list is provided by MME to UE to track UE in idle mode. I want to know what is the purpose of having different kind of tracking area type like "consecutive tracking area codes belonging to one plmn" , "non-consecutive tracking area codes belong to one PLMN".

Answer 1

Tracking area procedure not only may differ for different eNodeB but also for different UEs coming to same eNodeB.
This procedure is totally dependent on vendor implementation and operator requirements.

For example:
If network is interested in UE mobility pattern then in that case each UE may have different patterns of movement.
Based on the analysis, network can prepare a suitable list of tracking area list for a particular. Here, suitable means "how to maintain trade-off between TAU and paging procedure".

Hope, I answered your query.