Network: Interworking Specifications (T37)

Abstract

3GPP specifies how interworking with non-3GPP IP access networks (such as WiMAX ASNs) shall take place. Within the 3GPP Release 7 set of specifications, interworking with WLAN networks is specified in [TS23.234] and
5 [T33.234] for security.

In this document WiMAX-3GPP interworking is specified based on the I-WLAN architecture described in [TS23.234] and [T33.234] by 3GPP. The solution covers both Direct IP access and 3GPP IP access scenarios.

This solution does not modify [TS23.234] and [TS33.234] in any way, but builds on top of it by providing missing interworking functionality from the WiMAX perspective, within the WiMAX CSN. The motivation for this is to make available an interworking solution in the time frame of the WiMAX Stage 2/3 Release 1.0.0 architecture as well as the 3GPP Release 7 timeframe that is focused on Direct IP access and 3GPP IP access scenarios.

It is understood that for future releases, a more advanced and integrated 1 interworking solution between WiMAX networks and 3GPP networks is under development as part of the 3GPP SAE (system architecture 3 evolution) effort. The interworking solution specified in this document does not limit such future architectures. The Table of Contents for the WiMAX Forum™ Network Architecture: WiMAX - 3GPP Interworking specification is below.

Table of Contents

1. Interworking with 3GPP
  1.1 Introduction and Scope
  1.2 Control Plane Protocols and Procedures
  1.3 Reference Point Mapping and Security

Scope

3GPP specifies how interworking with non-3GPP IP access networks (such as WiMAX ASNs) shall take place. Within the 3GPP Release 7 set of specifications, interworking with WLAN networks is specified in [TS23.234] and [T33.234] for security, where the following interworking scenarios are distinguished:

Scope

In the spirit of Stage 2, this document specifies the loosely coupled method of interworking between WiMAX® systems and cdma2000®1
systems. This architecture is applicable to an operator that owns both access technologies and provisions its users with a dual mode device (dual radios) that can connect to the core network through any one of the two technologies.

Abstract

3GPP Technical Specification 23.402 [4] specifies the stage 2 service description for providing IP connectivity using non-3GPP IP accesses (e.g. WLAN, WiMAX, HRPD etc.) to the 3GPP EPS. TS 23.402 [4] covers both roaming and non-roaming scenarios and covers all aspects related to the usage of non-3GPP IP accesses, including mobility between 3GPP and non-3GPP accesses, policy control and charging, and authentication. This document specifies Stage 2 & 3 specifications for interworking between Mobile WiMAX® and Release-8 3GPP Evolved Packet System (EPS). The purpose of this document is to identify the requirements and impacts to the WiMAX network for interworking with 3GPP EPS and not to duplicate the content of TS 23.402 [4].
This specification assumes that the mobile terminal can operate in dual-radio mode i.e. both radios can transmit and receive simultaneously. Single-Radio operation will be covered in separate specification. This specification also assumes dual mode mobile terminal is connected to common 3GPP Core (EPC) via WiMAX ASN. Scenario where dual mode mobile terminal is connected to common WiMAX Core (CSN) via 3GPP access is not supported.

Table of Contents

1. Introduction and Document Scope
2. Abbreviations and Definitions
3. References
4. General Requirements and Principles
5. Interworking Network Reference Model
6. PDN-GW Selection
7. Access Network Discovery and Selection
8. Initial Attach to 3GPP EPC via WiMAX® ASN
9. Detach Procedure
10. Authentication and Security
11. IP Address Allocation
12. IP Mobility Mode Selection
13. Handover
14. Resource Deactivation Procedures
15. Policy and Charging Control
16. MS/UE implications
17. AAA implications
18. Accounting implications

Abstract

This document specifies Stage 2 and Stage 3 specifications for Single Radio interworking from Non-WiMAX 2 Access Networks to mobile WiMAX® Access Networks. It covers the various interworking aspects such as 3 authentication and authorization, handover, etc. for the Single Radio MS1.The Single Radio handover solution from WiMAX to 3GPP2/Wi-Fi® networks is defined in other specifications.

Table of Contents

1. Document Scope
2. Abbreviations and Definitions
3. References
4. Requirements and Principles
5. Single Radio Interworking Architecture Reference Model
6. Single Radio Inter-RAT Handover Procedures
7. Message Format

Appendix A: Access Specific Aspects