Patent ID: 9615317
Date: 2017-04-04
CPC Classifications: H04W

Claim:
1. A method for requesting closed subscriber group (CSG) subscription data, the method comprising: determining, by a mobility management element (MME) in response to receiving a first request from a user equipment (UE), whether the MME has previously received from a CSG subscriber server (CSS) a message comprising an indication that the CSS has already stored a first identifier of the MME, and whether the UE has subscribed to a CSG service; sending, by the MME, a second request to the CSS in response to determining that the MME has not previously received the indication and that the UE has subscribed to the CSG service, wherein the second request comprises the first identifier of the MME and a second identifier of the UE and is used for requesting the CSG subscription data of the UE; and receiving, by the MME from the CSS, the indication after the second request is received by the CSS.