Broad band switching network

A broad band switching network comprising a plurality of broad band switching nodes and broad band inter-switching-node transmission lines for connecting said broad band switching nodes, the broad band network transmitting information by transmitting a cell which consists of a header and information field, and setting transmission routes upon occurrence of a cell and variable band width of the transmission routes with an intelligent inference mechanism;

• each said broad band switching node comprising:
• a broad band input/output post for inputting said cell from said broad band inter-switching-node transmission lines and outputting said cell to said broad band inter-switching-node transmission lines;
• and
• switching means for demultiplexing said cell inputted through said broad band input/output port and transmitting said cell for multiplexed output to said broad band input/output port;
• wherein when the broad band switching network is started up, the broad band switching network sets transmission routes with a particular band width among the broad band switching nodes;
• and when a call takes place, the broad band switching network executes routing control to set transmission routes and variably set the band width of the transmission routes in inference mechanism by using the transmission routes at the start-up;
• said intelligent inference mechanism comprising:
• a data base which registers data for setting transmission routes upon occurrence of a call and for variably setting the band width of the transmission routes;
• first means for processing the transmission route setting in accordance with the data registered in said data base by using a procedure base;
• second means for inferring the transmission route and the band width setting in accordance with data registered in said data base by using a knowledge base;
• third means for inferring the transmission route and the band width setting in accordance with the data registered in said data base by using a case base;
• fourth means for inferring the transmission route and the band width setting by using a search base;
• and
• fifth means for learning about the transmission route and the band width setting in accordance with the inference results and process results of said second to fourth means and for accordingly updating the data of said data base.

A broad band switching network comprising a plurality of broad band switching nodes, and broad band inter-switching-node transmission lines for connecting said broad band switching nodes, the broad band switching network transmitting information by transmitting a cell which consists of a header and information field;

• said broad band switching node comprising:
• a broad band input/output port for inputting and outputting said cell to and from said broad band inter-switching-node transmission lines;
• and
• switching means for demultiplexing said cell inputted through said broad band input/output port and transmitting said cell for multiplexed output to said broad band input/output port;
• wherein an extension transmission line branches off, a root of the branched-off extension transmission line is connected to said broad band switching node, tips of the branched-off extension line are connected to terminal equipments, information being transmitted bidirectionally between said broad band switching nodes and said terminal equipment with a frame having a cell multiplexing area which is divided into a plurality of time slots for multiplexed transmission of said cell and a window area to which a control signal for transmission control is sent.