Handling closed subscriber group lists

摘要

A core network receives in an uplink message a first list of closed subscriber groups (CSGs) located within one gateway domain to which mobility is possible for a user equipment UE. The core network creates a third list by checking the first list received in the uplink message against a second list which is the UE's allowed CSG list, and sends the third list downlink to at least one of a serving gateway of the UE or a serving access node of the UE. In one embodiment the first list consists of all CSGs within a domain of the respective serving gateway/access node; and in another embodiment it consists of all neighbor closed subscriber group cells of the respective serving gateway/access node which sent the uplink message to the core network. In different embodiments the third list is a whitelist or a blacklist.