Communicating method and communicating system

A communicating method, comprising steps of:

• providing a command signal to an under-test object, and waiting for receiving a response signal from the under-test object after the command signal is received by the under-test object;
• and
• if the response signal from the under-test object has not received for a predetermined waiting time period, providing the command signal to the under-test object again and adjusting the predetermined waiting time period, wherein there is an exponential relation between the predetermined waiting time period and a number of times the command signal is provided to the under-test object;
• wherein the exponential relation is expressed by a mathematic formula:
• Tn=An-1×T1,
• wherein A is a base, and n is the number of times the command signal is provided to the under-test object, T1 is the predetermined waiting time period after the command signal is provided to the under-test object at the first time, and Tn is the predetermined waiting time period after the command signal is provided to the under-test object at the n-th time.