| 摘要 |
The invention concerns a method of transmitting packets (P1, P2, ..., PN), and a central scheduler (CS) for supporting said method. The packets (P1, P2, ..., PN) are transmitted in corresponding channels (C 1 , C 2 , ..., C N ) via a packet-based network (NET) from a first node (N 1) to a second node (N2). Each of the packets (P1, P2, ..., PN) carries a payload of real-time data. The packets (P1, P2, ..., PN), when arriving at the second node (N2), must wait for respective buffer times until the second node (N2) forwards the real-time data of the packets (P1, P2, ..., PN). A central scheduler (CS) receives data about the number of channels (C 1 , C 2 , ..., C N ) and respective pre-scheduled processing times associated with the channels (C 1 , C 2 , ..., C N ). The central scheduler (CS) analyses the received data and data about a total bandwidth available for the channels (C 1 , C 2 , ..., C N ). Based on a result of said analysis, the central scheduler (CS) establishes a set of target arrival instants (TATA 1 , TATA 2 , ..., TATA N ). The first node (N1) is provided with control messages (211, 212, ..., 21 N) on defined sending instants to change the defined sending instants so that the arrival instants of the assigned packets (P1, P2, ..., PN) meet the target arrival instants (TATA 1 , TATA 2 , ..., TATA N ). |
