... Wideband CDMA Standard for the UTRA FDD Air Interface
7
‘Hot-Spot’ scenarios also require the use of interfrequency handover. In a hot-spot
scenario, a certain cell that serves a high traffic area ...
used by adjacent cells. If deployment of extra carriers is to be confined to the actual
hot spot area, then the possibility of interfrequency handover is necessary.
2.2.5 Adaptive Antenna