WE CLAIM:
1. A mobile communication system including a closed subscriber group (CSG) cell (1)
which is accessible by a CSG member, a hybrid cell (3) which is the CSG cell where a non-
closed subscriber group (non-CSG) member is also allowed access at the same time, and a
mobile terminal (A, B) which is subscribed as the CSG member and connected to the CSG
cell or the hybrid cell as the CSG member, wherein
triggered by reception at a base station of the CSG cell of a message from a network side (MME or HSS) while the mobile terminal is connected to the CSG cell, the message indicating a subscription time period for the CSG member has expired, the CSG cell is configured to initiate a handover, and
triggered by reception at a base station of the hybrid cell of the message from the network side while the mobile terminal is connected to the hybrid cell, the hybrid cell is configured to change treatment for the mobile terminal from treating the mobile terminal as the CSG member to treating the mobile terminal as the non-CSG member.
2. A base station that covers a closed subscriber group (CSG) cell (1) which is accessible
by a CSG member, wherein
triggered by reception at the base station of the CSG cell of a message from a network side (MME or HSS) while a mobile terminal (A, B) is connected to the CSG cell, the message indicating a subscription time period for the CSG member has expired, the base station is configured to initiate a handover.
3. A base station that covers a hybrid cell (3) which is a closed subscriber group (CSG)
cell (1) where a non-closed subscriber group (non-CSG) member is also allowed access at the
same time, wherein
triggered by reception at the base station of the hybrid cell of a message from a network side (MME or HSS) while a mobile terminal (A, B) is connected to the hybrid cell, the message indicating a subscription time period for the CSG member has expired, the base station is configured to change treatment for the mobile terminal from treating the mobile terminal as the CSG member to treating the mobile terminal as the non-CSG member.