Wireless Oom

Page can be originated
1. UTRAN
or
2. CN
If the UE is in idle mode, then CN will originate the page.
If the UE is in Cell_PCH or URA_PCH, then UTRAN will originate the page.

The existence of RRC connection
In idle mode, there is no RRC connection.

I heard that there is no much difference between idle and Cell_PCH from UE perspective.
In idle, UE is located within registration area.
In Cell_PCH, UE’s location is known in cell level.
Then, what about URA_PCH?
In URA_PCH, UE’s location is known in registration area level.
Then, is it true that there is no difference between idle and URA_PCH ?
It [...]