直接看英文的比較不會(huì)被迷惑。

The CELL_FACH state is characterized by:
•No dedicated physical channel is allocated to the UE.
•The UE continuously monitors a FACH in downlink.
•The UE is assigned a default common or shared transport channel in the uplink (e.g. RACH or CPCH) that it can use anytime according to the access procedure for that transport channel.
•No Soft or Hard Handover might be initiated.
•UTRAN knows the position of the UE on the cell level according to the cell where the UE last made a cell update.
•The UE performs Cell Updates, but no URA updates.
In the CELL_FACH sub state, the UE performs the following actions:
•Listens to all FACHs in the cell
•Listens to the BCH transport channel of the serving cell for the decoding of system information messages
•Initiates a cell update procedure on cell change of another UTRA cell
•Uses C-RNTI assigned in the current cell as the UE identity on common transport channels except for when a new cell is selected
•Transmits uplink control signals and small data packets on the RACH
•In FDD mode, transmits uplink control signals and larger data packets on CPCH when resources are allocated to the cell and UE is assigned use of those CPCH resources


The CELL_PCH state is characterized by:
•No dedicated physical channel is allocated to the UE
•UE selects a PCH with the algorithm and uses DRX for monitoring the selected PCH via an associated PICH
•DCCHs/DTCHs are configured but cannot be used
•No Soft or Hard Handover might be initiated.
•No uplink activity is possible (state change to Cell_FACH is needed)
•The UE performs Cell Updates, but no URA updates.
•Position of the UE is known by UTRAN on the cell level according to the cell where the UE last made a cell update in the CELL_FACH state
•The UE sends Measurement Reports to RNC according to the RNC setup.
In the CELL_PCH state the UE performs the following actions:
•Monitor the paging occasions according to the DRX cycle and receive paging information on the PCH
•Listens to the BCH transport channel of the serving cell for the decoding of system information messages
•Initiates a cell update procedure on cell change




The URA_PCH state is characterized by:
•No dedicated channel is allocated to the UE
•UE selects a PCH with an algorithm and uses DRX for monitoring the selected PCH via an associated PICH
•UE monitors Downlink PICH/PCH (Paging must be detected to change into RRC connected mode)
•No uplink activity is possible
•DCCHs/DTCHs are configured but cannot be used
•No uplink activity is possible (state change to Cell_FACH is needed)
•Location of the UE is known on the UTRAN Registration area level according to the URA assigned to the UE during the last URA update in CELL_FACH state
In the URA_PCH state the UE performs the following actions:
•Monitors the paging occasions according to the DRX cycle and receive paging information on the PCH
•Listens to the BCH transport channel of the serving cell for the decoding of system information messages
•Initiates a URA updating procedure on URA change