System and method in a gprs network for interfacing a base station system with aserving gprs support node

摘要

A system and method in a General Packet Radio Service (GPRS) network for interfacing a Base Station System (BSS) and a Serving GPRS Support Node (SGSN). A protocol stack in the BSS and the SGSN includes a User Datagram Protocol (UDP) layer over an Internet Protocol (IP) layer. Data packets are transmitted between functional entities in the SGSN and the BSS over a connectionless IP network. The protocol stack includes a Base Station System GPRS Protocol (BSSGP) protocol layer that provides radio-related, Quality-of-Service (QoS), and routing information that is required to transmit user data between the BSS and the SGSN. The stack also includes a modified Network Services (NS') layer which is divided into an upper NS'-Network Service Control (NS'-NSC) sub-layer and a lower NS'-Sub-Network Service (NS'-SNS) sub-layer. The NS'-NSC sub-layer maps to the BSSGP layer and manages fictional entities therein. The NS'-SNS sub-layer maps to the UDP and IP layers and provides access to the IP network. A single UDP port is reserved to make the NS layer and the BSSGP layer act as an application over the IP stack.