Signal transceiving method, signal transceiver utilizing the signal transceiving method, network connection method and network device utilizing the network connection method

A network connecting method applied to a network device, comprising:

• adjusting to approximate a value of a clock frequency of a signal to be transmitted from the network device to a value of a clock frequency of a received signal;
• performing an echo cancellation operation;
• computing a distance between a first certification code transmitted by the network device and a second certification code received by the network device;
• and
• stopping the echo cancellation operation when the distance is smaller than a threshold value.

A signal transceiver, comprising:

• a transmitting frequency-tracking circuit, arranged for adjusting to approximate a value of a clock frequency of a signal to be transmitted from the signal transceiver to a value of a clock frequency of a received signal;
• an echo canceller, arranged for performing an echo cancellation operation;
• a comparator, arranged for computing a distance between a first certification code transmitted by the network device and a second certification code received by the network device;
• and
• a control unit, arranged for stopping the echo cancellation operation when the distance is smaller than a threshold value.

A network device, comprises:

• a transmitting frequency-tracking circuit, arranged for adjusting to approximate a value of a clock frequency of a signal to be transmitted from the network device to a value of a clock frequency of a received signal;
• an echo canceller, arranged for performing an echo cancellation operation;
• a comparator, arranged for computing a distance between a first certification code transmitted by the network device and a second certification code received by the network device;
• and
• a control unit, arranged for making the echo canceller stop the echo cancellation operation when the distance is smaller than a threshold value.