Tuesday, November 10, 2009

Paging in UMTS (Connected Mode)

*In URA_PCH and CeLL_PCH states, paging request triggers state change

- When Paging Type1 message is received by UE in Connected mode, it does the below thing

If ( IE Paging Originator = CN ) in Paging Message
if (State is IDLE)
{
Compare "CN UE Identity" with its allocated. For each match forward Identity and Paging Cause to Upper Layers
}
if (state is Connected Mode)
Ifnore the Paging Message


If ( IE Paging Originator = UTRAN)
if (state = IDLE Mode)
Ignore;
if (State = Connected Mode)
UE Enters CeLL_Fach state and performs Cell Update procedure with cause as PagingResponse

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