Commun. 6, 3028-3037 (2007) 33. R.J. Luebbers, A Heuristic UTD slope diffraction coefficient for rough lossy wedges. IEEE Trans. Antenn. Propag. 37, 206-211 (1989). https://doi.org/10.1109/8.18707 34. R.J. Luebbers, Comparison of lossy wedge diffraction coefficients with application to mixed path propagation loss prediction. IEEE Trans. Antenn. Propag. 36, 1031-1034 (1998). https:// doi.org/10.1109/8.7210 Chapter 9 Feasibility of LDM to Serve User-IoT Check for updates Pairs in the Future Wireless Network Md Shantanu Islam, Raouf Abozariba, A. Taufiq Asyhari, Mohammad Patwary, and Mohammad Abdul Matin 9.1 Introduction The future wireless system's development is focused on achieving higher capacity and flexibility than the existing systems. The future network should provide seamless services to new types of services such as the internet of things (IoT), enhanced mobile broadband (eMBB) communications, and tactile internet. These services are setting the standards for the long-term evolution of fifth generation (5G) and beyond 5G (B5G) [1]. Multiple technologies have the potential to achieve this seamless connectivity with increased user capacity. Non-orthogonal multiple access (NOMA) is one such potential technology [2, 3]. In this chapter we are exploring the application and feasibility of LDM in future wireless communication to achieve higher network capacity while delivering the required standard of user and IoT communications. We have developed a reliable downlink transmission framework and usage model that can take advantage of the different characteristics of the LDM layers. LDM is a layer division or power-based NOMA which can be configured with diverse power levels (layers) to provide different services using its upper and lower layer [4]. LDM can serve two different services using a single traffic channel (OFDM channel as will be presented later) as both layers can use the available time and frequency slot of M. S. Islam (X) . R. Abozariba . A. T. Asyhari School of Computing and Digital Technology, Birmin