SLOT 1 : 09:00-10:30 

09:00-10:00 Keynote Speaker: Prof. Krishna Narayanan, Texas A&M University

                    Title: Re-engineering the Uplink for Next Generation Massive Multiple Access

Abstract: Current wireless infrastructures have been designed to serve human-operated devices, with popular applications such as voice telephony, Internet browsing, navigation, and music/video streaming. Much of the engineering behind existing systems has focused on developing an efficient and high-throughput downlink. Yet, the emergence of machine-type communication (MTC) is forcing a paradigm shift because unattended devices interact with their environments in fundamentally different ways compared to humans. Machine-type communication is characterized by the sporadic and fleeting nature of traffic, short payloads, and large number of transmitting users. Supporting machine-type traffic requires a re-engineering of the physical and medium access control layers in the uplink. I will provide an overview of our recent results on how we can use the 2-step random access channel (RACH)  procedure as a blueprint and enhance it to design massive multiple access schemes for the next generation. We will present an overview of how recent research (from many research groups) has revitalized classical approaches such as slotted ALOHA, interference cancellation, compressed sensing, interleave-division multiple access, and code division multiple access to support machine type communication. 

10:00-10:15 An SCMA-Based Grant-Free Access Scheme Alessandro Mirri, Diego Forlivesi, Lorenzo Valentini, Marco Chiani and Enrico Paolini

10:15-10:30 An Investigation of the Compressed Sensing Phase in Unsourced Multiple Access  Federico Clazzer, Farouk Amri and Marcel Grec

Break 

SLOT 2 : 11:00-12:30

11:00-11:15 Age-optimal Joint Sampling and Transmitting Scheduling for Wireless Sensor Networks with Energy Harvesting Yonghao Ji and Xiaoli Xu

11:15-11:30 Massive Opportunistic Sensing with Limited Collaboration for Age of Information Alessandro Buratto, Leonardo Badia

11:30-11:45 Timeliness Analysis of CSMA/CA with Truncated HARQ in the Finite Blocklength Regime   Zhiwei Bao, Wei Gao, Xiaopeng Yuan, Yulin Hu and Anke Schmeink

11:45-12:00 Towards 6G Data-Oriented Uplink RSMA Systems: Delay-Outage Ratio Analysi  Mehmet Can, Mehmet Ilter, İbrahim Altunbaş, Mikko Valkama  

12:00-12:15 Secrecy Communications for Wireless-Powered Cooperative NOMA Systems: A Power Allocation and Friendly Jamming Approach Yuan Ren, Xu Zhang and Xuewei Zhang, Guangyue Lu 

12:15-12:30 Decentralized Massive Access Random Scheme in User-Centric Cell-free Massive MIMO System Yanfeng Hu, Dongming Wang, Xinjiang Xia, Xiaohu You

 

Chairs: Andrea Munari, Estefanía Recayte

Organizers : Andrea Munari, Estefanía Recayte, Slawomir Stanczak