The present invention relates to a method and system of transmissions and
retransmissions of packet data in a communications system, where the
communications system uses switched channels, switching between rates or
channels of different characteristics, and connection control and
management in such a system. Particularly, the invention relates to radio
resource management in a Universal Mobile Telecommunications System,
UMTS, or WCDMA system allowing for use of compatible protocols for
non-switched and switched channels.