METHOD AND SYSTEM FOR PROVIDING RADIO ACCESS BEARER BANDWIDTH CHANGE SERVICE ON WCDMA NETWORK

摘要

The present invention relates to a system and method for providing a radio access bearer bandwidth change service in a WCDMA network.;The present invention provides a method for providing a radio access bearer (RAB) bandwidth change service in a wideband CDMA (WCDMA) network, comprising: (a) a packet switched support node (SGSN); Receiving a Packet Data Protocol (PDP) context change request (Pdify_PDP_Context_Request) message from a mobile communication terminal by a Serving GPRS Support Node (hereinafter referred to as 'SGSN'); (b) transmitting a packet data protocol context update request (Update_PDP_Context_Request) message for bandwidth update of an existing call to a General Gateway Support Node (GGSN); (c) transmitting a RAB Assignment Change Request (Modify_RAB_Assignment_Request) message to a Radio Network Controller (RNC); (d) receiving, from the RNC, a RAB Assignment Change Failure (Modification_RAB_Assignment_Fail) message indicating that the change of the RAB bandwidth has failed; (e) transmitting a packet data protocol context change rejection (Modify_PDP_Context_Reject) message to the mobile communication terminal and transmitting a packet data protocol context update request message to the GGSN; (f) receiving a packet data protocol context release request (Deactivate_PDP_Context_Request) message requesting release of an existing call from a mobile communication terminal; (g) transmitting a packet data protocol context delete request (Delete_PDP_Context_Request) message to the GGSN; And (h) receiving a packet data protocol context setup request (Activate_PDP_Context_Request) message for establishing a new call from the mobile communication terminal.;According to the present invention, after the mobile communication terminal transmits a Packet Data Protocol (PDP) context change request (Modify_PDP_Context_Request) message to a Serving GPRS Support Node (SGSN). When receiving a packet data protocol context change rejection (Modify_PDP_Context_Reject) message from the SGSN, the packet data protocol context release request (Deactivate_PDP_Context_Request) message is sent to release the existing call, and a packet data protocol context change request (Activate_PDP_Context_Request) message is transmitted to send a new call. By changing the radio access bearer (RAB) to the bandwidth required by the mobile communication terminal, the RQ that does not support the RAB bandwidth changing function requires certain QoS (Quality) required by a specific service selected by the mobile communication terminal. of Service It was co-RAB to change the bandwidth (Bandwidth) is a mobile communication device user has the effect that receives a reliable service.;WCDMA, RNC, QoS, RAB, Radio Access Bearer, Bandwidth