Patent ID: 8805366

Claim:
A base station apparatus connected to a mobile station apparatus, the base station comprising: a releasing unit configured to release a connection to the mobile station apparatus being connected, and a transmitting unit configured to transmit, to the mobile station apparatus, a connection release message instructing release of the connection, the message including cell information for causing the mobile station apparatus to start an initial access procedure for another preferable cell, wherein the cell information includes cell ID information and frequency information for specifying the preferable cell, broadcast information applied to the preferable cell detected by performing cell search, and preamble information used for the initial access procedure on the preferable cell, and wherein the broadcast information includes access restriction information, in a case where the access restriction information indicates an access restriction associated with Closed Subscriber Group (CSG) cell, and the CSG cell is configured to restrict the access of the mobile station apparatus that are not being registered.