The Interference Control use case focuses on **reducing the impact of the transmission** on neighbour cells. In LTE, all cells reuse the same carrier frequencies. While an User Equipment is near the station of the serving cell, the received power of this cell will be higher than the received power of the neighbour cells using the same carrier frequency. Problems arise when the User Equipment is on the edge of two or more coverage areas. The received power from neighbour cells will be higher and the interference it causes will be considerable. This would be called Downlink **inter-cell interference.** ![[Pasted image 20230215181418.png]] At the same time, the UE can cause interference to the neighbour cell, as it also sends information to all the other cells apart from the serving one. In this case, the UE would be causing **Uplink inter-cell interference**. On the cell edge, the interference is higher. ![[Pasted image 20230215181609.png]] The Interference Control has to take into account both scenarios and **reduce the interference to increase the capacity and quality of service** of the users. ## Opportunities: Optimisation of **Spectrum Allocation** / Optimization of Power Settings. Eg. regulate the transmitted power according to the channel quality indicator (CQI) received from the user. The CQI is computed based on the SINR from the received interference. Eg. an optimization module that improves sectorization, antenna angle selection and spectrum allocation. After that, a second module, called power allocation module, finds the best relation between capacity and interference . #telco