F.2 HSS behaviour

29.3283GPPIP Multimedia (IM) Subsystem Sh interfaceRelease 18Signalling flows and message contentsTS

The HSS requests traffic reduction from the AS when the HSS is in an overload situation, including OC-OLR AVP in answer commands as described in IETF RFC 7683 [36].

The HSS identifies that it is in an overload situation by implementation specific means. For example, the HSS may take into account the traffic over the Sh interfaces or other interfaces, the level of usage of internal resources (CPU, memory), the access to external resources, etc.

The HSS determines the specific contents of OC-OLR AVP in overload reports and the HSS decides when to send OC-OLR AVPs by implementation specific means.