Study on hybrid switching mechanism in network on chip

Abstract

Direct Interconnection networks have been employed in network on chip (NoC). Provision of quality of service(QoS) in direct Interconnection networks is a challenging problem and receives much attention recently. Traditional switching mechanisms such as, store and forward, wormhole switching, and virtual cut-through switching cannot meet QoS demands for real-time applications in NoC. To solve such problem, we study a hybrid switching mechanism which can guarantee the quality of service for the real-time applications. The implementation is discussed in details and simulated by OPNET software under various traffic loads. The results show that the hybrid switching can provide good performance for real-time applications compared with that of the traditional single switching mechanism.