RFC 3574 (rfc3574) - Page 2 of 12
Transition Scenarios for 3GPP Networks
Alternative Format: Original Text Document
RFC 3574 Transition Scenarios for 3GPP Networks August 2003 1. Introduction This document describes the transition scenarios in 3GPP packet data networks that might come up in the deployment phase of IPv6. The main purpose of this document is to identify and to document those scenarios for further discussion and study them in the v6ops working group. Just a brief overview of the 3GPP packet data network, GPRS, is given to help the reader to better understand the transition scenarios. A better overview of the 3GPP specified GPRS can be found for example from [6]. The GPRS architecture is defined in [1]. 2. Scope of the Document The scope is to describe the possible transition scenarios in the 3GPP defined GPRS network where a UE connects to, or is contacted from, the Internet or another UE. The document describes scenarios with and without the usage of the SIP-based (Session Initiation Protocol [5]) IP Multimedia Core Network Subsystem (IMS). The 3GPP releases 1999, 4, and 5 are considered as the basis. Out of scope are scenarios inside the GPRS network, i.e., on the different interfaces of the GPRS network. This document neither changes 3GPP specifications, nor proposes changes to the current specifications. In addition, the possible transition scenarios are described. The solutions will be documented in a separate document. All the possible scenarios are listed here. Further analysis may show that some of the scenarios are not actually relevant in this context. 3. Brief Description of the 3GPP Network Environment This section describes the most important concepts of the 3GPP environment for understanding the transition scenarios. The first part of the description gives a brief overview to the GPRS network as such. The second part concentrates on the IP Multimedia Core Network Subsystem (IMS). Soininen Informational
