A new superframe scheme to reduce delay in IEEE 802.15.4

The key features of low-rate wireless personal area networks (LRWPAN) are the low data rate, low cost, and low power consumption. LR-WPAN is very useful in many applications such as detection, remote control, tracking, and monitoring. In particular, the data delay is very important in detection and remote control in WPAN. In this paper, we propose a superframe structure for LR-WPAN to reduce the delay to transfer data from the source to the destination. Our scheme can reduce overall mean data delay of between any pair of devices by reducing waiting time of data generated during inactive period.