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)
if (State = Connected Mode)
UE Enters CeLL_Fach state and performs Cell Update procedure with cause as PagingResponse

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