Multicast Resource Allocation with Opportunistic Scheduling in LTE Networks

Abstract

Long Term Evolution (LTE) and beyond networks offer high bitrates with low latencies which makes them the best choice to handle the growing demand on multicast mobile services such as video streaming, and news broadcasting. In Conventional Multicast Scheme (CMS), the gain of multicast is exploited by transmitting data to all users simultaneously using the rate of Worst Channel Gain (WCG), which wastes network resources. In this paper, to better balance the tradeoff between the multicast gain and multiuser diversity, we propose a mechanism to select a threshold to split users into two subgroups and exploits the Opportunistic Multicast Scheme (OMS) to transmit the data. Simulation results show that the proposed mechanism improves the multicast performance in terms of increased throughput, decreased delay and Packet Loss Ratio (PLR) compared to existing mechanisms from the literature.

A Joint Modulation-Coding Scheme and Resource Allocation in LTE Uplink

“…The PS is a crucial factor that allows the maximization of the LTE system performance [5] through optimal resource allocation. Several studies have divided the PS into two steps [6], [7]: 1) a time-domain packet scheduler (TDPS) that selects a subset of active users based on their priority and service quality (QoS), 2) a frequency-domain packet scheduler (FDPS) that allocates physically PRBs to each user in each transmission time interval (TTI) with onemillisecond duration [8].…”