Basic self-routing unit and method for building its half-cleaners, sorters, network concentrators and multicast switching network

A basic self-routing unit for multicast, comprising:

• two input ports comprising a first input port and a second input port;
• and
• two output ports comprising a first output port and a second output port;
• wherein:
• an input signal of the input ports comprises a route signal and data attribute and data content;
• the route signal comprises an algebraic lattice structure and comprises a bicast signal, a unicast signal and an idle signal;
• when the route signals of the two input ports are the bicast signal and the idle signal respectively, the input port whose route signal is the bicast signal is connected with the first output port and the second output port, the output route signal value of the first output port is a Boolean product of the two input route signals, and the output route signal value of the second output port is a Boolean sum of the two input route signals.