Reconfigurable Intelligent Surface Assisted Internet-of-Things: MAC Design and Optimization

In this paper, we propose a reconfigurable intelligent surface (RIS) assisted medium access control (MAC) protocol, termed RIS-MAC, which is used for uplink traffics and low power communications of a large number of users in Internet-of-Things (IoT) networks. In the proposed RIS-MAC protocol, RIS configuration parameters can be reserved for each user by introducing the negotiation phase before the...