On Delay-Constrained Transmissions of a Finite Number of Short-Length Packets

In industrial Internet-of-Things (IoT) applications including smart factories, railway/aircraft operating and control systems, so on, it is expected to deliver a bundle of packets with delay constraint. this paper, we study delay-constrained transmissions where user or device send short-length within certain time limit through radio resource blocks shared others. We first derive closed-form expression for (a tight upper-bound on) the probability decoding error when packet transmitted multiple channels (for high diversity gain under fading). Using expression, then performance in terms delivery using notion queuing systems. It shown that derived expressions agree simulation results, which demonstrates those can be used design transmission systems support IoT has delivered short reliability.