Apparatus and method for accessing network

A network access method which is performed by a network access device connected to a control server through a network and connected to at least one end point through a cable, wherein the network access device comprises a processor and at least one domain master connected to each end point, the method comprising:

• pairing between the domain master and the end point, and registering the result;
• reporting the registration to the processor by the domain master;
• reporting the registration to the control server through the network by the processor;
• receiving a channel estimation request from the control server through the network to the processor and transmitting it to the domain master from the processor;
• performing channel estimation between the domain master and the end point;
• and
• reporting the channel estimation from the domain master to the processor and transmitting the reported channel estimation to the control server through the network by the processor,
• wherein the control server estimates resource provisioning based on the channel estimation and transmits the result to the processor, and the processor provisions the domain master and the end point based on the resource provisioning, and
• wherein the control server requests channel re-estimation when a signal-to-noise ratio for the channel estimation is greater than a threshold value and estimates resource provisioning based on the re-received channel estimation.