erent times in each cell of the same site. Each cell belonging to the same WBTS (WCDMA BTS) should transmit the synchronisation channels with a given offset (T-offset) from each other. If the T- offset is given to all cells and the scrambling codes of a base station belong to the same scrambling code group, there is a gain when detecting P-SCH, but detecting S-SCH in soft handover areas is likely to be unsuccessful. Camping on a Cell When the mobile is on idle mode it is camping on a cell and the network knows the mobile location on a location area/routing area basis. The mobile monitors the PCPICH channel to measure cell quality; the PCCPCH is monitored for BCCH information and PICH for possible paging requests. The target for the mobile in idle mode is to camp on the best possible cell. In addition to measured cell quality, cells are also ranked according to suitability. Parameter Planning Suitable Cell A suitable cell provides a normal service to the UE/user. It belongs to a selected PLMN and allows the UE to camp normally on the cell. The UE can receive system and paging information from the PLMN and can initiate a call setup for outgoing calls or other actions from the UE. A suitable cell meets the cell selection criteria (S-criteria). Acceptable Cell This provides a limited service (emergency calls). An acceptable cell also meets the cell selection criteria. Barred Cell The UE is not allowed to camp on. If a cell is barred the indication is sent in the system information. Reserved Cell The UE is not allowed to camp on. If a cell is reserved the indication is sent in the system information. Cell Reservations and Access Restrictions There are two mechanisms that allow an operator to impose cell reservations or access restrictions: cell status indication and access control. The cell status indication and special reservations are sent on the BCCH system information. The cell status controls cell selection and re-selection; if cell selection is not allowed for a user, not even emergency calls are possible. There