CTDMA: Color-aware TDMA Network System For Low latency and High Throughput in Dense D2D Wireless Network

Abstract

The usage of IoT devices is rapidly growing recently and it raises the challenge of supporting a dynamic network of dense IoT devices with low latency and high throughput. Among the network multiple access protocols, Time Division Multiple Access(TDMA) is most suitable for this scene for its time efficiency and easy implementation. However, TDMA protocols typically perform poorly when confronted with the merging collision problem incurred especially in dynamic networks. Inspired by the coloring mechanism and spatial reuse introduced by 802.11ax, we created a cluster-based TDMA network system that can predict incoming collisions and avoid the collisions by rescheduling or extending the frame length before they actually happen. It can achieve zero-collision TDMA networks with optimal frame length and thus enhances the overall throughput and latency.