DYNAMIC INTER-CELL INTERFERENCE COORDINATION AND DYNAMIC RESOURCE ALLOCATION SCHEDULING SCHEMES FOR INTER-CELL INTERFERENCE MITIGATION IN 3GPP LTE

초록

In 3GPP long term evolution (LTE), the system performance is severely hampered by the inter-cell interference (ICI) due to the frequency reuse. For this reason, 3GPP LTE is currently studying some policies to mitigate the ICI. In this paper, to mitigate the ICI and maintain the data rate of the cell edge MSs, we propose two schemes in the 3GPP LTE downlink. The first scheme is a dynamic inter-cell interference coordination (ICIC) scheme exploiting not only the interference information like RBs experiencing a high interference of the evolved NodeBs (eNBs) but also the QoS information such as the available RBs, data rate, outage of the eNBs exchanged through the X2 interface in 3GPP LTE. The second scheme is a dynamic resource allocation (DRA) scheduling scheme called the modified PF scheme. The simulation results show that the two proposed schemes play an important role in increasing greatly the data rate per MS at the cell edge without much loss of data rate per MS in the whole cell.

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