Integrated routing and channel arbitration in overlaid mesh WiNoC

Unequal RF nodes are properly deployed to improve network performance of wireless network-on-chip benefited from the greatly reduced network diameter, forming the so called overlaid mesh WiNoC. However traffic can be severely congested at big nodes which serves as the access points to long links. To optimize system performance, a cross-layer design solution is delivered which integrates a dynamic routing selection scheme and a handshaking based multi-channel arbitration method. In dynamic routing, the routing decision is dynamically selected in a way that temporarily detours the routing path when a default overlaid routing path gets congested. Integrated seamlessly with the routing scheme, a multi-channel assignment and arbitration scheme is developed to enhance bandwidth usage and reduce contention overhead. Our simulation studies highlight the optimization effectiveness and performance impact of the cross-layer approach over the layered design.