8 Charging requirement

23.1413GPPArchitecture and functional descriptionPresence serviceRelease 17TS

The following charging requirement for presence service is identified. The requirements shall be realized by enhancements of the IMS charging mechanism as specified in TS 32.240 [6] and TS 32.260 [7].

1) Watcher Presence Proxy shall be able to provide the charging information for watcher requests per watcher for presence enquiry or subscription and subsequent notifications.

2) Presentity Proxy shall be able to provide the charging information for updates to presence information per watcher.

3) The Presence Server shall be able to provide the charging information for notifying the watcher of updates to presence information. Presence Server shall be able to provide the charging information for subscription to Watcher Lists and receiving notification of Watcher Information. Presence Server shall be able to provide the charging information for collecting the record of watcher list information per presentity. The Presence Server shall be able to provide the charging information for publishing presence information per presentity.

4) Presence List Server shall be able to provide the charging information for Watcher subscription to Presence Lists and receiving notification of Presence Information.

5) It shall be possible to apply specific tariffs (e.g. zero rating) to the bearer and/or signalling traffic associated with the above presence service "events". Differentiating in the IP Connectivity access network between the signalling traffic related to presence events and signalling traffic related to other IMS SIP communications is not a requirement.

Annex A (informative):
Information flows