When a mobile station has moved from a network area controlled by a first
radio network controller (RNC) to a network area controlled by a second
RNC, the utilisation of transmission links in the radio access network is
optimized and the transmission delay between the controlling RNC and the
radio interface is minimized by relocating the entities which control the
connections of the mobile station from the first RNC to the second RNC.
Such controlling entities may be, for example, the macrodiversity
combining function, radio resource control block, and associated user
plane entities.
