Can anyone please explain these two terms in LTE in our network its defined under GERANNFREQGROUP properties. (Huawei Vendor with 2G and LTE NW)

its defined values are mentioned as CellReselPriority=3 and ConnFreqPriority =8 .

should be the same or different.

Queris : 

1.CellReselPriority and ConnFreqPriority : what does they mean.

2. Values should be same or different.