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How do we get MIB modification notification?

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RRC spec says By acquiring corresponding msg? What is this meaning?

posted Jun 12 by Ankit Mishra

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Hi,
As far as i know, UE doesn't know any notification for MIB change, eNB sends MIB every 40ms, and repeated in every Radio frame. UE keeps on reading. So specifically UE won't get any notification , UE wakes up and read

answer Jun 12 by Sushant Bose
Reading MIB in every 40ms leads to an unwanted process right?suppose if UE is in IDLE then how it wakes up and reads?If UE is in connected mode DRX then how it reads in off duration? As per 331 spec it says, MIB modification will be notified by acquiring correspondence message , so this means MIB will not be read always ?
sorry, i frame my answer again, what i meant is "UE will be in drx cycle, it will not not read MIB always, as that will be redundant and drains UE battery".but as far as i know, UE will not be notified for MIB modification
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