Goodput Maximization in Slotted ALOHA Networks Operating with Finite Blocklength Codes

Abstract

In this work, we consider an Internet of Things (IoT) system where slotted ALOHA is applied to handle the random access process of multiple IoT users. We leverage recent advances in the performance characterization in the finite blocklength (FBL) regime, and study the goodput and reliability performance of the network. In particular, we characterize the tradeoff between the transmission error due to FBL, the collision error influenced by FBL and user number, and the goodput. Following the characterization, an optimal system design is provided aiming at maximizing the goodput via choosing the optimal blocklength and determining the optimal number of users sharing the frequency resource of interests.

Authors 5

1. Qinwei He
   Affiliation as printed

   Global Energy Interconnection Research Institute Europe GmbH, Germany

2. Katrin Gartenmeister Aachen ISEK Research Area/Lab

   RWTH Aachen University

   Affiliation as printed

   ISEK Research Area/Lab, RWTH Aachen University, Germany

3. Yao Lin Zhu Aachen ISEK Research Area/Lab

   RWTH Aachen University

   Affiliation as printed

   ISEK Research Area/Lab, RWTH Aachen University, Germany

4. Yulin Hu

   Wuhan University

   Affiliation as printed

   School of Electronic Information, Wuhan University, China

5. Anke Schmeink Aachen ISEK Research Area/Lab

   RWTH Aachen University

   Affiliation as printed

   ISEK Research Area/Lab, RWTH Aachen University, Germany