If my question is valid then what could be the reason for HSS initiated UE detach procedure and which message is sent by HSS to MME to get triggered detach procedure ?
HSS can initiate detach procedure when users Subscription is removed known as subscriber withdrawal.
It proceeds with this call flow where HSS triggers cancel location request to MME.
Source :- 23.401 5.3.8.4
Hi, I heard that starting from some of 3gpp releases MME can not send detach to eNB during receives "cancell location" from HSS. Is it true? In which release it was described first?
Aleksei
Does Mme also sends Purge(PUR) to HSS before sending delete session request to SGW when MME receives detach request from enodeb side ? It would be great if you give your valuable suggestion ?
In what all scenarios, this procedure gets executed ? And why this procedure need to be executed ?
