학술논문
Unsourced Multiple Access for Heterogeneous Traffic Requirements
Document Type
Conference
Author
Source
2022 56th Asilomar Conference on Signals, Systems, and Computers Signals, Systems, and Computers, 2022 56th Asilomar Conference on. :687-691 Oct, 2022
Subject
Language
ISSN
2576-2303
Abstract
We investigate the coexistence of critical and massive Internet of Things (IoT) services in the context of the unsourced multiple access (UMA) framework, introduced by Polyanskiy (2017). We consider the standard UMA setup in which all users employ a common codebook and the receiver returns an unordered list of codewords. To model the critical IoT service, we assume that the users can also communicate a common alarm message. We further assume that the number of active users in each transmission attempt is random and unknown. We derive a random-coding bound for the Gaussian multiple access channel and demonstrate that orthogonal network slicing enables the two traffic types to coexist with high energy efficiency.