A pipeline-based matching scheduling approach for input-buffered switches relaxes the timing constraint for arbitration with matching schemes, such as CRRD and CMSD. In the new approach, arbitration may operate in a pipelined manner. Each sub-scheduler is allowed to take more than one time slot for its...http://www.google.com/patents/USRE42600?utm_source=gb-gplus-sharePatent USRE42600 - Scheduling the dispatch of cells in non-empty virtual output queues of multistage switches using a pipelined arbitration scheme