Highway in TDM NoCs

Flexible and Efficient QoS Provisioning in AXI4-Based Network-on-Chip Architecture

“…Both methods focus on improving the resource usage. The best improvement result in [11] is 52% for the Ericsson Radio System (ERS) benchmark, while our approach can increase 93.85% maximally. However, we note that our tests utilized synthetic traffic while [11] used application-oriented benchmarks.…”

“…By the priority scheme, service could be offered to the latency-critical packets, which will influence the system performance on a large scale. In [11], Liu et al proposed a highway-based TDM NoC. It builds a highway with special buffer queues to ideally enhance the throughput and reduce data transfer delay.…”

“…From the perspective of area, additional buffers require more complex selector and buffer management unit. It will either influence the critical path, decreasing the frequency, or prolong the pipeline stage, increasing the transfer latency in the TDM router [11].…”

“…We can compare our proposed conversion method with the TDM highway scheme in [11]. Both methods focus on improving the resource usage.…”

“…Besides, their NoC architectures do not consider the support of QoS scheme which could be required by the AXI4 signal. In terms of QoS provisioning, related works such as [9] [10] [11] [12] only support one or two QoS schemes, which is not enough for the multiple requirements of different processors or devices. For example, CPU is latency critical; GPU requires guaranteed bandwidth and the SATA device only needs best-effort transfer.…”