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For UTRAN Long Term Evolution (LTE) systems, inter-cell interference is the most important interference source. Inter-cell interference coordination (IOC) is considered to improve coverage and increase data rate at cell edge. The current consensus of IOC scheme is towards semi-static soft frequency reuse (SFR). Due to the limitation of resource configuration way for semi-statci SFR, problems will...
In this paper, the inter-cell interference coordination (ICIC) is investigated for the downlink transmission in OFDMA-based multi-cellular systems. The utility function is introduced to balance efficiency and fairness. Firstly, the system model is built based on the resource allocation rules of soft frequency reuse (SFR) and the utility-based optimization problem is formulated. Secondly, the problem...
Considering the new feature after introducing the relay nodes (RNs) into the conventional cellular networks and the existing interference coordination techniques, a novel method of interference coordination for cell-edge users in relay enhanced cells (RECs) is proposed in this paper. Firstly, all available frequency resource in each cell is divided into two parts. One part is allocated to users directly...
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