Wireless terminal device and method of controlling the same

A wireless terminal device comprising:

• a first communication unit that is connected to an external device and performs communication with a network side at a first communication speed;
• a second communication unit that is connected to the external device and performs communication with the network side at a second communication speed that is faster than the first communication speed;
• and
• a control unit that reciprocally switches between the first communication unit and the second communication unit,
• wherein the control unit cancels a reception confirmation signal sent from the external device and resends data received from the network side to the external device, in a case of performing the switching from the second communication unit to the first communication unit, and
• wherein the reception confirmation signal indicating that reception of data ended normally.

A method for controlling a wireless terminal device including:

• a first communication unit that is connected to an external device and performs communication with a network side at a first communication speed;
• a second communication unit that is connected to the external device and performs communication with the network side at a second communication speed that is faster than the first communication speed;
• and a control unit that reciprocally switches between the first communication unit and the second communication unit, the method comprising the steps of:
• delaying data received from the network side via the second communication unit by a predetermined time, in a case of the control unit performing switching from the second communication unit to the first communication unit;
• and
• sending the data received from the network side to the external device, after being delayed by a predetermined time in the delaying step.

A method for controlling a wireless terminal device including:

• a first communication unit that is connected to an external device and performs communication with a network side at a first communication speed;
• a second communication unit that is connected to the external device and performs communication with the network side at a second communication speed that is faster than the first communication speed;
• and a control unit that reciprocally switches between the first communication unit and the second communication unit, the method comprising the steps of:
• cancelling a reception confirmation signal sent from the external device ended normally, in a case of the control unit performing switching from the second communication unit to the first communication unit;
• and
• resending the data received from the network side to the external device, and
• wherein the reception confirmation signal indicates that reception of data ended normally.