2DMAC: A Sustainable and Efficient Medium Access Control Mechanism for Future Wireless NoCs
| Autor: | Sidhartha Sankar Rout, Mitali Sinha, Sujay Deb |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ACM Journal on Emerging Technologies in Computing Systems. |
| ISSN: | 1550-4840 1550-4832 |
| Popis: | Wireless Network-on-Chip (WNoC) requires a Medium Access Control (MAC) mechanism for an interference free sharing of the wireless channel. In traditional MAC, a token is circulated among the Wireless Interfaces (WIs) in a Round Robin manner. The WI with the token holds the channel for a fixed number of cycles. However, the channel requirement of the individual WIs dynamically changes over time due to the varying traffic density across the WNoC. Moreover, the conventional WNoCs give equal importance to all the traffic taking the wireless path and transmit them in an oldest-first manner. Nevertheless, the critical data can degrade the system performance to a large extent by delaying the application run-time if not served promptly. We propose 2DMAC, which can change the token arbitration pattern and tune the channel hold time of each WI based on its run-time traffic density and criticality status. Moreover, 2DMAC prioritizes the critical traffic over the non-critical traffic during the wireless data transfer. The proposed mechanism improves the wireless channel utilization by 15.67%, the network throughput by 29.83%, and reduces the critical data latency by 29.77% over the traditional MAC. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|