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Content for TS 32.252 Word version: 11.2.0

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4.1 High level WLAN architecture 4.2 WLAN offline charging architecture 4.3 WLAN online charging architecture 5.1 WLAN charging principles 5.2 WLAN offline charging scenarios 5.3 WLAN online charging scenarios 6.1 Data description for WLAN offline charging 6.2 Data description for WLAN online charging 6.3 WLAN Charging specific parameters B.0 Introduction B.1 General B.2 No re-use of policy control in the GGSN

4 Architecture considerations p. 11

4.1 High level WLAN architecture p. 11

4.2 WLAN offline charging architecture p. 16

4.3 WLAN online charging architecture p. 17

5 WLAN charging principles and scenarios p. 18

5.1 WLAN charging principles p. 18

5.1.0 Introduction p. 18

5.1.1 WLAN Direct IP Access charging p. 19

5.1.2 WLAN 3GPP IP Access charging p. 19

5.2 WLAN offline charging scenarios p. 19

5.2.1 Basic principles p. 19

5.2.1.1 Direct IP Access p. 19

5.2.1.2 3GPP IP Access p. 20

5.2.2 Wf message flows p. 21

5.2.2.1 Message Flows - WLAN session when WLAN access network supports accounting p. 21

5.2.2.2 Message Flows - WLAN session when WLAN access network does not support accounting p. 23

5.2.3 WLAN-AN-CDR generation p. 24

5.2.4 WLAN-CDR generation p. 24

5.2.4.1 Triggers for WLAN-CDR charging information collection p. 24

5.2.4.1.1 Triggers for WLAN-CDR Charging Information Addition p. 25

5.2.4.1.2 Triggers for WLAN-CDR closure p. 25

5.2.5 Ga record transfer flows p. 25

5.2.6 Bw CDR file transfer p. 25

5.3 WLAN online charging scenarios p. 26

5.3.1 Basic principles p. 26

5.3.2 Wo message flows p. 28

5.3.2.1 Message Flows - WLAN session were WLAN access network support Diameter Credit Control p. 28

5.3.2.2 Message Flows - WLAN session were WLAN access network support RADIUS/Diameter accounting (version 1) p. 30

5.3.2.3 Message Flows - WLAN session were WLAN access network support RADIUS/Diameter accounting (version 2) p. 32

5.3.2.4 Message Flows - WLAN session were WLAN access network don't support RADIUS/Diameter accounting p. 34

6 Definition of charging information p. 36

6.1 Data description for WLAN offline charging p. 36

6.1.1 Rf message contents p. 36

6.1.1.1 WLAN Direct IP Access Charging message contents p. 36

6.1.1.1.1 Charging Data Request Message p. 36

6.1.1.1.2 Charging Data Response Message p. 36

6.1.2 GTP' message contents p. 37

6.1.3 CDR Description on the Bw Interface p. 37

6.1.3.1 CDR Field Types p. 37

6.1.3.2 CDR Content p. 37

6.1.3.2.1 WLAN Direct IP Access CDR (WLAN-AN-CDR) p. 38

6.1.3.2.2 WLAN 3GPP IP Access charging message contents p. 39

6.2 Data description for WLAN online charging p. 39

6.2.1 Ro message contents p. 39

6.2.1.1 WLAN Direct IP Access Charging message contents p. 39

6.2.1.1.1 Debit/Reserve Unit Request message p. 40

6.2.1.1.2 Debit/Reserve Unit Response message p. 40

6.2.1.2 WLAN 3GPP IP Access Charging message contents p. 41

6.2.1.2.1 Debit/Reserve Unit Request message p. 41

6.2.1.2.2 Debit/Reserve Unit Response message p. 42

6.2.2 Detailed Message Formats p. 42

6.2.2.1 WLAN Direct IP Access Charging message contents p. 42

6.2.2.2 WLAN 3GPP IP Access Charging message contents p. 42

6.3 WLAN Charging specific parameters p. 42

6.3.1 - p. 42

6.3.1.1 WLAN charging information assignment for Service-Information p. 42

6.3.1.2 Definition of WLAN Information p. 43

6.3.2 Formal WLAN charging parameter description p. 43

6.3.2.1 WLAN charging information for CDRs p. 43

6.3.2.2 Definition of the WLAN charging events p. 43

A Bibliography p. 44

B (Normative) Re-using the GGSN charging functions to implement the PDG charging functions p. 46

B.0 Introduction p. 46

B.1 General p. 46

B.2 No re-use of policy control in the GGSN p. 46

B.2.0 Introduction p. 46

B.2.1 Offline charging p. 47

B.2.2 Online charging p. 48

$ Change history p. 49