Inspection Device For Physical Layer Module, Method Thereof, And Communication System Using The Same
An inspection device of a physical layer module connected between a terminal transmitting an Internet Protocol (IP)-packet and a physical layer module, the inspection device including an interface transmitting/receiving the IP-packet; a destination MAC address analyzing unit analyzing a destination MAC address to which the IP-packet transmitted from the interface is to be transmitted; a physical layer-packet/physical layer-frame generator converting the IP-packet and generating a physical layer-frame with a control header and an error-detecting code attached; a physical layer-frame transceiving unit transmitting/receiving a physical layer-frame to/from the physical layer module; and an IP-packet generator receiving a physical layer-frame with a control header and an error-detecting code attached from the physical layer module, determining the physical layer module based on the control header and the error-detecting code, converting the physical layer-frame into an IP-packet, and transmitting the IP-packet to the interface.
1 . An inspection device of a physical layer module connected between a terminal transmitting an Internet Protocol (IP)-packet and a physical layer module, the inspection device comprising;
an interface transmitting/receiving the IP-packet;
a destination MAC address analyzing unit analyzing a destination MAC address to which the IP-packet transmitted from the interface is to be transmitted;
a physical layer-packet/physical layer-frame generator converting the IP-packet and generating a physical layer-frame with a control header and an error-detecting code attached;
a physical layer-frame transceiving unit transmitting/receiving a physical layer-frame to/from the physical layer module; and
an IP-packet generator receiving a physical layer-frame with a control header and an error-detecting code attached from the physical layer module, determining the physical layer module based on the control header and the error-detecting code, converting the physical layer-frame into an IP-packet, and transmitting the IP-packet to the interface.
2 . The inspection device of claim 1 , wherein the inspection device is connected to the terminal through a network.
3 . The inspection device of claim 1 , further comprising a controller initializing the inspection device, setting and storing control information containing a physical layer transmission protocol, and transmitting the physical layer transmission protocol to a physical layer-packet/physical layer-frame generator and the IP-packet generator.
4 . The inspection device of claim 3 , wherein the physical layer-packet/frame generator generates a physical layer-packet to be appropriate to a physical layer by assembling/disassembling the IP-packet based on the control information stored in the controller, and generating the physical layer-frame by attaching the control header and error-detecting code to the physical layer-packet.
5 . The inspection device of claim 1 , wherein the destination MAC address analyzing unit analyzes a MAC address of the IP-packet, and discards the IP-packet when the IP-packet is not expected to be transmitted using a physical layer.
6 . The inspection device of claim 1 , wherein the error-detecting code is a cyclic redundancy check.
7 . A method used by an inspection device connected between a communication terminal and a physical layer module for inspecting the physical layer module, the method comprising:
a) receiving a physical layer-frame containing a control header and an error-detecting code from the physical layer module;
b) inspecting an error in the physical layer module using the error-detecting code;
c) analyzing the physical layer-frame and collecting valid data; and
d) generating an IP-packet based on the collected valid data.
8 . The method of claim 7 , further comprising
1) converting an IP-packet transmitted from the communication terminal, and generating a physical layer-frame with the control header and error-detecting code attached; and
2) transmitting the physical layer-frame through a physical layer.
9 . The method of claim 8 , wherein 1 ) comprises:
generating a physical layer-packet by assembling/disassembling the IP-packet; and
attaching the control header and error-detecting code to the physical layer-packet and generating the physical layer-frame according to a physical layer transmission protocol.
10 . The method of claim 7 , wherein the IP-packet is transmitted/received through a network.
11 . The method of claim 7 , wherein b) further comprises discarding the physical layer-frame when an error is detected in the physical layer module.
12 . A communication system transmitting/receiving data through a physical transmission medium, the communication system comprising:
a terminal transmitting/receiving the data in a form of an Internet Protocol (IP)-packet;
an inspection device converting the IP-packet transmitted from the terminal into a physical layer-frame based on a physical layer transmission protocol, and converting a received physical layer-frame into an IP-packet so as to be transmitted to a terminal; and
a physical layer module transmitting a physical layer-frame transmitted from a physical transmission medium to the inspection device, and transmitting a physical layer-frame generated by the inspection device to the physical transmission medium.
13 . The communication system of claim 12 , wherein the terminal and the inspection device are connected to each other through a network.
14 . The communication system of claim 12 , wherein the inspection device comprises:
an interface transmitting/receiving the IP-packet to/from the terminal;
a destination Medium Access Control (MAC) address analyzing unit analyzing a destination MAC address of an IP-packet transmitted from the interface;
a physical layer-packet/physical layer-frame generator converting the IP-packet and generating a physical layer-frame with a control header and an error-detecting code attached;
a physical layer-frame transceiving unit transmitting/receiving a physical layer-frame to/from the physical layer module; and
an IP-packet generator receiving a physical layer frame with a control header and an error-detecting code attached from the physical layer module, inspecting the physical layer module using the error-detecting code, converting the physical layer-frame into an IP-packet, and transmitting the IP-packet to the interface.
15 . The communication system of claim 14 , wherein:
the inspection device further comprises a controller initializing the inspection device, setting and storing control information containing a physical layer transmission protocol, and transmitting the physical layer transmission protocol to the physical layer-packet/physical layer-frame generator and the IP-packet generator, and
the physical layer-packet/frame generator generates a physical layer-packet to be appropriate to a physical layer by assembling/disassembling the IP-packet based on control information stored in the controller, and generating a physical layer-frame by attaching the control header and error-detecting code to the physical layer-packet.