This is achieved by giving scheduling priority to the least "expensive" data flows in terms of consumed network resources per transferred amount of information.
In the uplink of a spread spectrum cellular system, the carrier-to-interference ratio (CIR) is held constant by the power control for all users.
This will prevent other more efficient data flows, since there is a maximum allowed interference level in the cell, and reduce the throughput.
Consequently, for maximum throughput scheduling, data flows that suffer from high path loss should be considered as the most expensive, also in this case.
In wireless network with fast dynamic channel allocation (DCA), on a packet-by-packet or slot-by-slot basis, a user that is situated in the overlap between the coverage areas of several base stations would cause, or would be affected by, interference to/from nearby cells.