APPARATUS, METHOD AND COMPUTER PROGRAM TO RESERVE RESOURCES IN COMMUNICATIONS SYSTEM

摘要

A Resource Reservation System includes a Token Generation Unit (TGU) which generates and circulates among nodes of a communications system a Slotted Token (SLT) message having sub-fields to carry identification number for eac h input port in a node and the resource available for each input port. On receiving the message the Resource Control Unit (RCU) in each node can write port identification number, available resource in appropriate sub-fields of the SLT message, and reserve resources in other nodes by adjusting informati on in the sub-field associated with the other nodes.