Understand TTI bundling

Specs & Protocol Testing
1

Hi Experts.
Does anyone have a good reference or explanation to understand TTI bundling?

2

You’ll get enough info from here:

3

Hi @Saurabh63 , thanks
i have one question, TTI bundling to enable/disable this decision is taken by eNB(RRC) or UE(RRC) ?
i read it but got this doubt. it says "The decision to enable/disable TTI bundling would be taken by RRM based on the Path-loss and PHR reports received from enodeB L2 "
But i think PHR is sent by UE, so how UE(RRC) will know it has to enable TTI bundling

4

To enable or disable TTI bundling, decision is taken by enb based upon PL and PHR reports sent by UE.

TTI bundling is IE from mac_main config which is sent inside Radio resource config dedicated so message may be RRC connection setup or RRC connection reconfiguration or re-establishment.

5

Typo on that website