Dwell Time: The time period for which a particular call is maintained/sustained in a cellular region is known as “Dwell time”. There are many factors available that influences the ‘Dwell time’ parameter, they are

1. Interference
2. Propagation
3. The distance/range between the base station and the subscriber.

Cell Dragging:  It is kind of practical problem when a call is in progress in cellular region. The hand offs threshold level and radio coverage parameters are the parameters are the main factors that has to be taken care to avoid “cell dragging”.

Cell dragging may result from pedestrian user which will provide strong signal to Base Station(BS) when there is Line of Sight (LOS) path between base station and subscriber and as the user moves away from base station the average signal strength will slowly decay and as the user goes far from base station (beyond the radio coverage of cell), the signal received at base station will be still above the hand off threshold level. Hence hand off will not be initiated and finally there will be traffic management problem and potential interference generated resulting in Cell dragging problem.