Mobile communication system

摘要

A mobile communication system includes a CSG cell which is accessible by a CSG member, a hybrid cell which is the CSG cell where a non-CSG member is also allowed access at the same time, and a mobile terminal which is subscribed as the CSG member and connected to the CSG cell or the hybrid cell as the CSG member. Even in a case in which a subscription time period has expired, the mobile communication system enables the mobile terminal to continue the connection. When the subscription time period for the CSG member expires, in case of the mobile terminal's connection to the CSG cell, the CSG cell initiates a handover, in case of the mobile terminal's connection to the hybrid cell, the hybrid cell changes treatment for the mobile terminal from treating the mobile terminal as the CSG member to treating the mobile terminal as the non-CSG member.

主权项

1. A mobile communication system including a closed subscriber group (CSG) cell which is accessible by a CSG member, a hybrid cell 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 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 while the mobile terminal is connected to the CSG cell, the message indicating a subscription time period for the CSG member has expired, the message being transmitted from the network side to a base station of the CSG cell and not transferred by the base station of the CSG cell to the mobile terminal, the CSG cell is configured to initiate a handover, the CSG cell is configured to transmit a handover request to a target cell which is a handover destination of the mobile terminal, the CSG cell is configured to transmit a radio resource management (RRC) connection reconfiguration message to the mobile terminal after receiving a handover request acknowledgement from the target cell, the mobile terminal is configured to receive the RRC connection reconfiguration message from the CSG cell, the mobile terminal is configured to transmit an RRC connection configuration complete message to the target cell, 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.