A.8 Use case of UpPTS interference

32.4053GPPPerformance Management (PM)Performance measurementsRelease 17Telecommunication managementTSUniversal Terrestrial Radio Access Network (UTRAN)

When many NodeBs cover a large area, one NodeBs UpPTS may receive interference from another far nodeB transmission signal for the transmission delay. If the UpPTS interference is too strong, UE can not access network. The solution of interference coordination is determined by the ratio of the number of UpPTS interference that is larger than threshold to the total number of it. So it is necessary to define UpPTS interference measurement.

According to network optimization experience, measurement granularity is 1dB, it is enough to do probability distribution to determine extending coverage or GPS synchronization problem.