Automated Uplink Power Control Optimization in LTE-Advanced Relay Networks
Relaying is standardized in 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE)-Advanced Release 10 as a promising cost-efficient enhancement to existing radio access networks. Relay deployments promise to alleviate the limitations of conventional macrocell-only networks such as poor indoor penetration and coverage holes. However, to fully exploit the benefits of relaying, Power Control (PC) in the uplink should be readdressed. In this context, PC optimization should jointly be performed on all links, i.e., on the Donor-evolved Node B (DeNB)-Relay Node (RN), the DeNB-user Equipment (UE) link, and the RN - UE link. This ensures proper management of interference in the network besides attaining a receiver dynamic range which ensures the orthogonality of the Single-Carrier Frequency-Division Multiple Access (SC-FDMA) system.