| 摘要 |
During communication by a mobile device 10, when a communication feasibility determining unit 216 of an SGSN 20 determines, based on a remaining communication volume, that the communication by the mobile device 10 cannot be continued, an access point information extracting unit 201 extracts APN information regarding an APN with an unused remaining communication volume and reports the extracted APN information to the mobile device. An access point information acquiring unit 104 of the mobile device 10 acquires APN information regarding the APN with an unused remaining communication volume. When communication is next initiated, the APN information regarding the APN with an unused remaining communication volume is transmitted to the SGSN 20 to perform communication. |
