Patent ID: 6393024
Filing Date: 2002-05-21
Classification: H04L,H04Q

Abstract:
An asynchronous transfer mode (ATM) switch network with an expansible optical ring comprising:an ATM switch network that constructs a three-dimensional ring with an extensibility by forming a closed loop composed of a vertical ring, a horizontal ring and an expansible ring by using the 4Ã—4 ATM unit switch elements, and makes a group switch node by grouping the 4Ã—4 ATM unit switch elements forming the vertical ring and the horizontal ring wherein the group switch node receives a first data having a low-speed small capacity and a second data having a high-speed large capacity by an Input/Output (I/O) operation of a switch network, and matches the first data having low-speed small capacity with the second data having high-speed large capacity; two wavelength division demultiplexers having channels that are bisected by two optical lines wherein the second data having high-speed large capacity is input to each 4Ã—4 ATM unit switch element via the two wavelength division multiplexers and wherein an output signal of each 4Ã—4 ATM unit switch element passes through a wavelength division multiplexer in response to the bisected channel and wherein the group switch node receives data for matching the second data having high-speed large capacity by the I/O operation of the switch network, and matches the data; two optical lines through which the second data having high-speed large capacity is output to each 4Ã—4 ATM unit switch element and wherein the second data is also output to the wavelength division demultiplexer, and wherein a plurality of the ATM switch networks being composed of group switch nodes having a high-speed large capacity data matching circuit interconnect wavelength division I/O terminals of the switch node by using wavelength division multiplexing optical lines, and thus have an extensibility of a large capacity.