A.4 Charging Characteristics in MME

32.2513GPPCharging managementPacket Switched (PS) domain chargingRelease 17Telecommunication managementTS

The MME applies the subscription specific Charging Characteristics, or, if not supplied, it shall apply a pre-configured default behaviour for generation of SMS CDRs.

Upon activation of a IP-CAN session, the MME forwards the Charging Characteristics to the S-GW according to the following rules:

– if Charging Characteristics were received from the HLR/HSS, then they shall be sent as provided by the HLR/HSS, regardless of the home, visiting, or roaming case according to the following rules:

– if Charging Characteristics for the PDN connection (e.g. APN) are present in the subscription information they shall be forwarded;

– if no Charging Characteristics are present for the PDN connection (e.g. APN) but subscription related Charging Characteristics are present, they shall be forwarded.

– if no Charging Characteristics were received from the HLR/HSS, then the MME does not forward any Charging Characteristics to the S-GW.

If no charging characteristics were received from the HLR/HSS or from another MME or SGSN, then MME does not provide any charging characteristics to any MME or SGSN in mobility cases.

If charging characteristics were received from HLR/HSS, but not for all the IP-CAN bearers, then MME does not provide any charging characteristics to any MME or SGSN in mobility cases occuring through GTPv1.