一种提供高效带宽分配和低延迟的片上通信仲裁方法

提出一种“滑动带宽调整窗口”的仲裁方法，适用于片上网络的路由器、多端口的存储控制器和传统的共享总线。通过该仲裁方法，可以细粒度地设置和动态调整系统的通信带宽分配，从而使系统通信带宽分配和通信延迟维持在合理、稳定且符合系统设计要求的状态。实验表明，相比几种流行的仲裁方法，使用该仲裁方法，实际带宽分配与系统要求之间的差距减少了13％，平均通信延迟减少了37.5％，而且其硬件实现代价对于大中规模的系统芯片是完全可以接受的。

An Arbitration Approach of Efficient Bandwidth Allocation and Low Latency for SoC Communication

A novel arbitration approach for SoC communication is presented.It provides fine-grained bandwidth allocation which is based on dynamically updated records of communication status.The arbiters in NoC routers,multi-port DRAM controllers and shared buses can adopt this approach to improve system performance.This proposed approach is evaluated with a metric called bandwidth shortage,which reflects the closeness of the actual bandwidth allocation to an optimal one.Experimental results reveal that this arbitrati...