Patent ID: 7639696

Claim:
A method for identifying user position, comprising: setting a first tag corresponding to each of broadband access devices and a second tag corresponding to each of non-cascading ports in each of the broadband access devices, wherein the first tag and the second tag are employed to identify user positions; and wherein: when a port receiving a message in a broadband access device among the broadband access devices is a cascading port, transferring the message received from the cascading port; and when a port receiving a message in the broadband access device is a non-cascading port, inserting the first tag corresponding to the broadband access device and the second tag corresponding to the non-cascading port into the message received from the non-cascading port, and transferring the message with the inserted first tag and second tag; and when a broadband access server receiving the message carrying the first tag and the second tag from the non-cascading port, identifying, by the broadband access server, user position according to the first tag and the second tag inserted into the message; wherein the broadband access server knows though which broadband access device the user is connected according to the first tag, and through which port of the broadband access device the user is connected according to the second tag.