In-vehicle wireless communication device, roaming list updating system, and method for updating roaming list

An in-vehicle wireless communication device configured to perform wireless communication with a network of a carrier, the network configured to transmit a latest roaming list to the in-vehicle wireless communication device in response to reception of an update request from the in-vehicle wireless communication device, the in-vehicle wireless communication device comprising:

• a wireless communication unit configured to perform wireless communication with the network and receive a roaming list transmitted from the network;
• a storing unit configured to store the roaming list received by the wireless communication unit;
• a control unit configured to:
• cause the storing unit to store the roaming list transmitted from the network when the wireless communication unit receives the roaming list;
• set the roaming list stored in the storing unit to be workable in response to a determination that a predetermined condition is satisfied;
• and
• trace a wireless communication system, which the wireless communication unit is communicable with, using the roaming list, which is set to be workable,
• an updating state storing unit configured to store an updating state, which is in:
• a completed mode in which reception of a latest roaming list, which is transmitted from the network, is successful to an end of the reception, and updating of the roaming list stored in the storing unit is completed;
• or
• a non-completed mode in which reception of the latest roaming list, which is transmitted from the network, is unsuccessful from the beginning of the reception, and the roaming list stored in the storing unit is not updated,
• wherein the control unit is configured to determine the updating state stored in the updating state storing unit when the predetermined condition is satisfied, and the control unit is configured to:
• set the roaming list stored in the storing unit to be workable when determining that the updating state is in the completed mode, and
• cause the wireless communication unit to transmit an update request to the network when determining that the updating state is in the non-completed mode and when a present date and time reaches a predetermined regular date and time.

An in-vehicle wireless communication device configured to perform wireless communication with a network of a carrier, the network configured to transmit a latest roaming list to the in-vehicle wireless communication device in response to reception of an update request from the in-vehicle wireless communication device, the in-vehicle wireless communication device comprising:

• a wireless communication unit configured to perform wireless communication with the network and receive a roaming list transmitted from the network;
• a storing unit configured to store the roaming list received by the wireless communication unit;
• a control unit configured to:
• cause the storing unit to store the roaming list transmitted from the network when the wireless communication unit receives the roaming list;
• set the roaming list stored in the storing unit to be workable in response to a determination that a predetermined condition is satisfied;
• and
• trace a wireless communication system, which the wireless communication means is communicable with, using the roaming list, which is set to be workable,
• wherein the control unit is configured to cause the wireless communication unit to transmit an update request to the network in response to notification of a request for updating a roaming list from a vehicle service center.

A method for updating a roaming list in an in-vehicle wireless communication device via wireless communication with a network of a carrier, the method comprising:

• receiving a latest roaming list from the network;
• storing an updating state, which is in:
• i) a completed mode in which the receiving of the latest roaming list is successful to an end of the receiving;
• or
• ii) a non-completed mode in which reception of the latest roaming list, which is transmitted from the network, is unsuccessful in the course of the reception;
• determining whether the updating state stored is in the completed mode or the non-completed mode in response to a determination that a predetermined condition is satisfied;
• setting the roaming list stored to be workable and tracing a communicable wireless communication system using the roaming list workable when determining that the updating state is in the completed mode;
• and
• transmitting an update request to the network for receiving a latest roaming list from the network when a result of the determining is that the updating state is in the non-completed mode.

A method for updating a roaming list in an in-vehicle wireless communication device via wireless communication with a network of a carrier, the method comprising:

• receiving a latest roaming list from the network;
• storing an updating state, which is in:
• i) a completed mode in which the receiving of the latest roaming list is successful to an end of the receiving;
• or
• ii) a non-completed mode in which reception of the latest roaming list, which is transmitted from the network, is unsuccessful from the beginning of the reception, and the roaming list stored in the storing unit is not updated;
• determining whether the updating state stored is in the completed mode or the non-completed mode in response to a determination that a predetermined condition is satisfied;
• setting the roaming list stored to be workable and tracing a communicable wireless communication system using the roaming list workable when determining that the updating state is in the completed mode;
• and
• transmitting an update request to the network for receiving a latest roaming list from the network when a result of the determining is that the updating state is in the non-completed mode and when a present date and time reaches a predetermined regular date and time.

A method for updating a roaming list in an in-vehicle wireless communication device via wireless communication with a network of a carrier, the method comprising:

• receiving a latest roaming list from the network;
• determining whether a predetermined condition is satisfied;
• setting the roaming list stored to be workable and tracing a communicable wireless communication system using the roaming list workable in response to a determination that a predetermined condition is satisfied;
• and
• transmitting an update request to the network for receiving a latest roaming list from the network in response to notification of a request for updating a roaming list from a vehicle service center.