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1. (WO2010078968) LOCATION-BASED CHARGING
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CLAIMS:

1 . A method comprising: obtaining passive location data for a mobile communication device; comparing the passive location data with one or more special tariff areas; and determining whether or not the mobile communication device is within at least one of said one or more special tariff areas.

2. A method as claimed in claim 1 , further comprising receiving a request from a requesting module to determine whether the mobile communication device is within one or more of the one or more special tariff areas.

3. A method as claimed in claim 2, further comprising returning at least some of the passive location data for the mobile communication device to the requesting module.

4. A method as claimed in claim 2 or claim 3, further comprising returning an indication to the requesting module of whether the mobile communication device is within said one or more of the one or more special tariff areas.

5. A method as claimed in any preceding claim, wherein in the event that the mobile communication device is deemed to be a candidate for being within a special tariff area, the step of determining whether or not the mobile communication device is within at least one of said one or more special tariff areas includes using an active location module to determine a location for the mobile communication device.

6. A method as claimed in any preceding claim, wherein, in the event that available passive location data is unable to provide an adequate location for the mobile communication device, the step of determining whether or not the mobile communication device is within at least one of said one or more special tariff areas includes using an active location module to determine a location for the mobile communication device.

7. A method as claimed in any preceding claim, further comprising receiving passive location data for one or more mobile communication devices from a mobile communication network as a background process.

8. A method as claimed in claim 7, further comprising filtering said received passive location data and storing said filtered data.

9. A method as claimed in claim 8, wherein filtering said received passive location data includes filtering the data on the basis of an identity of the mobile communication device.

10. A method as claimed in claim 8 or claim 9, wherein filtering said received passive location data includes filtering the data on the basis of a location of the mobile communication device.

1 1 . An apparatus comprising: an input for receiving a request to determine whether a mobile communication device is within one or more special tariff areas; a controller adapted to obtain passive location data for the mobile communication device; and a comparator for comparing the passive location data with one or more special tariff areas.

12. An apparatus as claimed in claim 1 1 , further comprising an output for providing an indication regarding whether or not the mobile communication device is within at least one of said one or more special tariff areas.

13. An apparatus as claimed in claim 1 1 or claim 12, wherein the passive location data is obtained from a passive data collector.

14. An apparatus as claimed in claim 13, further comprising the passive data collector.

15. An apparatus as claimed in any one of claims 1 1 to 14, further comprising a filter for filtering uploaded passive location data.

16. An apparatus as claimed in any one of claims 1 1 to 15, further comprising a charging module.

17. A computer program product comprising: means for obtaining passive location data for a mobile communication device; means for comparing the passive location data with one or more special tariff areas; and means for determining whether or not the mobile communication device is within at least one of said one or more special tariff areas.