The Propagation Delay information are (also) available in simple form of Performance counters.
These types of counters are available in pre-set ranges according to each vendor. The ranges vary from 1 Propagation Delay to several 'grouped' Propagation Delay.
For example in Huawei have some TA ranges in GSM, and other PD ranges in WCDMA (Note: Huawei calls these propagation delay counter s as TP instead of PD). For an 'ideal' scenario, we would have counters for 'each' Propagation Delay.