International Workshop on SON

Research Article

An Adaptive Energy Saving Mechanism in LTE-Advanced Relay Systems

  • @INPROCEEDINGS{10.1109/ChinaCom.2012.6417553,
        author={Yue Li and Mugen Peng and Jiamo Jiang and Dong Liang},
        title={An Adaptive Energy Saving Mechanism in LTE-Advanced Relay Systems},
        proceedings={International Workshop on SON},
        keywords={energy saving lte-advanced relay adaptive sleep interval parameter mapping},
  • Yue Li
    Mugen Peng
    Jiamo Jiang
    Dong Liang
    Year: 2012
    An Adaptive Energy Saving Mechanism in LTE-Advanced Relay Systems
    DOI: 10.1109/ChinaCom.2012.6417553
Yue Li1,*, Mugen Peng1, Jiamo Jiang1, Dong Liang1
  • 1: Beijing University of Posts and Telecommunications
*Contact email:


The issue of energy saving (ES) has long been much concerned due to the ever increasing demand for services in advanced networks. To meet the requirements of spectral and energy efficiency improvement, the concept of heterogeneous networks (HetNet) is proposed in long term evolution-advanced (LTE-A) framework. In this work, we study one promising kind of HetNet nodes, the LTE-A relay node (RN), and propose an adaptive energy saving mechanism dedicated for LTE-A relay systems. Generally, since no direct link or interface is available during the dormant period, sleep relays need to receive the reactivation request from the donor enhanced Node B (DeNB) in a constant time interval. In order to save the overall power, the sleep interval of relays can be adjusted adaptively in the proposed mechanism, based on the demand of multi-service and cell load. Then a novel method of parameter mapping between tuning parameters for sleep interval and QoS parameters is introduced. We also discuss the system requirements for implementing the mechanism.