 not always predictable. Reconfigurations are typically triggered as part of dynamic ICIC to bring a balance between the cell edge user throughput experience VS. spectral efficiency. As part of dynamic ICIC, there are resource negotiations between the two eNodeBs via the X2 link as well. Though it is not as simple to implement the dynamic ICIC, it is more efficient and practical, as the cell sizes and the user distribution pattern in any network are not uniform. CHAPTER 2 SELF-ORGANIZING NETWORKS IN LTE DEPLOYMENT Some of the key aspects that should be considered when designing and implementing ICIC with fractional frequency reuse mechanism are: Implementing fractional frequency reuse. In the downlink, the fractional frequency reuse (FFR) scheme can be based on a preferred list of red, blue, greens (RBGs; color scheme). For each sector, its edge band consists of a subset of PRBs listed earlier in the list, and its center band consists of the remaining PRBs in the list. The common control channels of given sector are assigned edge PRBs to the maximum extent possible to avoid overlapping with edge PRBs of neighboring sectors. Further, it could be made flexible by allowing the operator to configure the number of PRBs that are reserved for cell edge and cell center. Cell edge UE identification. Considering the fact that the fractional frequency reuse design revolves around the PRB allocation for UEs ranged at different distances from the ENodeB, it becomes important that the UEs are classified as cell edge or cell center as accurately as possible for optimized results. There can be different mechanisms used by different vendors to indentify the UE as a cell edge user. One of the most popular methods to determine or classify the UE as a cell edge user is based on the UE reported RSRP or RSRQ. Typically, there would be a configurable threshold value that can be set per the operator's requirement. When the reported or average RSRQ or RSRP value from the UE goes below the threshold value, the UE can be classified as a ce