METHOD AND SYSTEM FOR DATA SERVICE IN WCDMA TELECOMMUNICATION SYSTEM

摘要

PURPOSE: A data service method of WCDMA(Wideband Code Division Multiple Access) network and a system are provided to convert a subscriber terminal requesting data service with HSDPA type to data service using DCH of WCDMA network thereby effectively adjusting idle resources for data call setting. CONSTITUTION: A subscriber terminal transmits a RRC(Radio Resource Control) access request message to a RNC(Radio Network Controller)(S210). The RNC requests confirming existence of residual bandwidth for a HSDPA(High Speed Downlink Packet Access) service as a Node-B(S220). If a HSDPA exclusive FA(Frequency Assignment) is able to accept the subscriber terminal, the RNC establishes session for data transmission of the subscriber terminal and HSDPA type(S240,S242). The RNC transmits RRC connection refusal message to the subscriber terminal(S250). The subscriber terminal converts into data transfer mode using the DCH (Dedicated Channel)(S270).