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Ura Ura

The document describes the different radio resource control (RRC) states in UTRA connected mode including CELL_DCH, CELL_FACH, CELL_PCH, and URA_PCH. It provides definitions for each state, describing characteristics like whether a dedicated physical channel is allocated, what transport channels can be used, and what level of location information is known for the UE. The URA_PCH state is specifically characterized by no dedicated channel being allocated, the UE monitoring a PCH via DRX, no uplink activity, and the UE location being known at the UTRAN registration area level.

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86 views4 pages

Ura Ura

The document describes the different radio resource control (RRC) states in UTRA connected mode including CELL_DCH, CELL_FACH, CELL_PCH, and URA_PCH. It provides definitions for each state, describing characteristics like whether a dedicated physical channel is allocated, what transport channels can be used, and what level of location information is known for the UE. The URA_PCH state is specifically characterized by no dedicated channel being allocated, the UE monitoring a PCH via DRX, no uplink activity, and the UE location being known at the UTRAN registration area level.

Uploaded by

debraj230
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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URA

State diagram
State diagram

Picture below shows the RRC states in UTRA RRC Connected Mode, including transitions between UTRA RRC 
connected mode and GSM connected mode for CS domain services, and between UTRA RRC connected mode and 
GSM/GPRS
GSM/GPRS packet modes for PS domain services. It also shows the transitions between Idle Mode and UTRA RRC 
k d f PS d i i I l h h ii b Idl M d d UTRA RRC
Connected Mode and furthermore the transitions within UTRA RRC connected mode. 
Definition of states
Definition of states
CELL_DCH state is characterised by:
A dedicated physical channel is allocated to the UE in uplink and downlink.
The UE is known on cell level according to its current active set.
Dedicated transport channels, downlink and uplink (TDD) shared transport channels, and a combination of these transport 
channels can be used by the UE.

CELL_FACH state is characterised by:


No dedicated physical channel is allocated to the UE
No dedicated physical channel is allocated to the UE.
The UE continuously monitors a FACH in the downlink.
The UE is assigned a default common or shared transport channel in the uplink (e.g. RACH) that it can use anytime according to
the access procedure for that transport channel. 
The position of the UE is known by UTRAN on cell level according to the cell where the UE last made a cell update.
In TDD mode, one or several USCH or DSCH transport channels may have been established.
, p y

CELL_PCH state is characterised by:


No dedicated physical channel is allocated to the UE.
The UE selects a PCH with the algorithm, and uses DRX for monitoring the selected PCH via an associated PICH.
No uplink activity is possible.
The position of the UE is known by UTRAN on cell level according to the cell where the UE last made a cell update in CELL_FACH
state.

URA_PCH State is characterised by:


No dedicated channel is allocated to the UE.
The UE selects a PCH with the algorithm and uses DRX for monitoring the selected PCH via an associated PICH
The UE selects a PCH with the algorithm, and uses DRX for monitoring the selected PCH via an associated PICH.
No uplink activity is possible.
The location of the UE is known on UTRAN Registration area level according to the URA assigned to the UE during the last URA 
update in CELL_FACH state.
Suggested Values
Suggested Values
Could be from 0 to 65535.
Per URA ID contains max 75 cells.

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