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LTE: What is the use of "paging priority" IE within the S1-AP paging message?

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LTE: What is the use of "paging priority" IE within the S1-AP paging message?
posted May 21, 2014 by Neeraj Mishra

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1 Answer

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MME can associate "paging priority" with a S1-AP paging message for an UE.
When eNodeB receives S1-AP paging messages for a set of UEs, It can prioritize some UEs out of total UEs present. There is limitation of paging records (i.e 16) can be send in one RRC paging message.

So if eNodeB has more than 16 UEs to send page message, it can prioritize them.
Usually MME includes "paging priority" when some high priority data is coming or some bearer creation is on going etc. It is up to operator policy when it want to include "paging priority". It may be based on operation or subscription as well.

answer May 22, 2014 by Vimal Kumar Mishra
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+1 vote

I found two MME UE S1-AP IDs i.e. MME UE S1AP ID (Mandatory) and MME UE S1AP ID 2 (optional).
I got why mandatory one is present but what's use of optional one.

Can someone please explain it ?

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