Abstract：In Long Term Evolution (LTE) heterogeneous networks, the gap between the power of Macro base station and Pico base station makes some users access to Macrocell even if they are closer to Picocell. Under this circumstance, Picocell may suffer severe uplink interference which could not be accurately identified under current schemes. Range Expansion (RE) could mitigate the uplink interference problem. However, it may bring new downlink interference at the same time. This paper proposes an Uplink Interference Identification and Coordination scheme based on Range Expansion (UIICRE) with theoretical analysis. UIICRE could identify the uplink interference sources and their interference strength, and then coordinate the interference according to the identification results. Simulation results show that UIICRE could promote UE’s uplink SINR under the condition that its downlink SINR would not be severely affected.
李林, 洪佩琳, 薛开平, 唐浩. 基于小区覆盖增强技术的Macro-Pico异构网络上行干扰识别与干扰协调机制[J]. 电子与信息学报, 2012, 34(12): 2823-2829.
Li Lin, Hong Pei-Lin, Xue Kai-Ping, Tang Hao. Uplink Interference Identification and Coordination Scheme Based on Range Expansion in Macro-Pico Heterogeneous Networks. , 2012, 34(12): 2823-2829.
2012, Vol. 34 
