The cdma2000 System for Mobile Communications: 3G Wireless Evolution

Chapter 6 IS-2000 Layer 3 Protocol

The IS-2000 Layer 3 [1], also called the signaling layer, comprises base station and mobile station interoperability procedures and associated signaling that allow the end user to receive service. From a functional standpoint, much of Layer 3 is about call processing, that is, the procedures used to set up, maintain, and release a connection between mobile station and base station. But Layer 3 is also responsible for other key interoperability procedures in the area of mobility management, identification, and security, to list a few. From an architecture standpoint, the signaling layer is modeled in terms of a protocol layer, service access points, and the control and data planes. The protocol layer on the ...