A mobility support element (MSC/VLR; SGSN, GGSN) for a cellular radio network
supporting
circuit-switched and packet-switched connections to/from a mobile station (MS).
For each mobile station (MS), there is a set (LSA1, LSA2) of special
cells (C1-C3, C9, C10) providing special service. A
radio control element (BSC1, BSC2) determines whether the mobile
station (MS) is in a special cell. Charging elements (CG, BC) receive charging
information comprising detail items which indicate events which affect charging.
The mobility support element (MSC/VLR; SGSN, GGSN) receives, when it begins to
serve the mobile station, a list (LSA1, LSA2) of the special cells
for the mobile station, and sends the list to the serving radio control element
(BSC1, BSC2). The mobility support element also supports or performs
classification of the detail items into two classes depending on whether or not
the corresponding event occurred while the mobile station was in a special cell.
