Router, method for controlling router, and computer program

摘要

In a bus system including a bus master, a first bus, and a second bus to connect them together, this router is arranged on the second bus to relay packets. The bus master outputs packets including information about at least one of (N+1) predetermined types of quality requirements. The second bus transmits packets designating at most N types of quality requirements. An exemplary router controls sending of the packets, with respect to at most N types of buffers that classify and store the packets by reference to the quality requirement type information and the packets stored in the buffers, so that the packets are sent in the descending order of their level of the quality requirement. The router controls sending schedule of the traffic flows by sensing a difference between the (N+1) different types of quality requirements.

主权项

1. A router to be provided for a bus system in order to relay packets, the bus system comprising: at least one bus master; a first bus; and a second bus which connects the at least one bus master and the first bus together and on which the router is arranged,
wherein the at least one bus master outputs packets including information about at least one of (N +1) predetermined types of quality requirements, where N is a positive integer, the second bus transmits packets designating at most N types of quality requirements, the router comprises: an input port configured to receive the packets including the information about the quality requirements; a buffer section including at most N different types of buffers to classify and store the packets by reference to the information about the types of quality requirements which is included in the packets received; a buffer allocating section configured to determine, according to the type of the given quality requirement, in which of a destination router's buffers of the at most N different types the packets need to be stored if a bus type changes at the destination router; and a sending control section configured to control sending the packets by scheduling sending order of the packets so that the packets that are stored in the buffer section are sent in the descending order of their level of the quality requirement, and the router controls sending schedule of traffic flows by sensing a difference between the (N +1) different types of quality requirements.