There are three situations in which there are multiple rrus in a cell:

1, when the capacity of multiple rrus is added, the total number of carrier frequencies is equal to the sum of the total number of each rru, which mainly solves the problem of coverage area capacity;

2. In the case of location group, one is the main RRU, and other RRUs are equivalent to his copies, or the repeater source is the main RRU, which mainly solves the situation of small capacity but requires wide coverage or special areas;

3. A mixture of the above two situations.