A method for providing roaming status information for service control in a packet data based mobile communication network including one or more terminal devices. An inputoutput circuit is formed over the semiconductor substrate, a grounding wiring and a power supply wiring pass over the inputoutput circuit, and a conductive layer for a bonding pad is formed thereover. Cooling air from a root supply cavity flows up through the plurality of suction side cooling channels to provide near wall cooling for the blade, then discharges into a cooling air collector cavity formed between the pressure and suction side walls. While supplying power to the temperature-changing device, the catheter is threaded along the guidewire up to the treatment site in the flexible state of the catheter. The apparatus and method provides an arming unit which releases armed weapons with zero retention force; and it which releases unarmed weapons even in the event of a release system failure.