After getting frustrated with an issue pertaining to the conditions when the Notify Request has to be sent and the info that needs to be sent, I've decided to summarize my understanding (Warning: May not be perfect). Here it is...
Notify Request (NOR) is sent to HSS under following conditions
Notify Request (NOR) is sent to HSS under following conditions
- NOR is sent after modify bearer response is received during Attach procedure.
- Request type is NOT handover
- EPS bearer was successfully established
- Subscription data from HSS indicates that the user is allowed to perform handover to non-3GPP accesses (say, CDMA)
- PDN GW selected by MME differs from what HSS indicated.
- If its GUTI Attach and the GUTI was assigned by a different MME
- If its GUTI attach, GUTI assigned by same MME and the default APN is not the same as first attach and the PGW changes during the attach.
No comments:
Post a Comment