1. TSG-SA Working Group 2 (Architecture) #03TSGS2#3 S299096

2. Nynashamn, 15 - 19 March 1999

3. Title:Iu interface Control Plane based on SCCP/IP protocol stack.

4. 1 Introduction

5. 2 Comparison of the proposals 2.1 SCCP over ATM based architecture 2.2 TCP/IP over ATM based architecture 2.3 SCCP over IP based architecture

6. 3 Signalling Transport Bearer Requirements 3.1 Addressing 3.2 Flexibility 3.3 Common Approach for the Signalling Transport Layer 3.4 Address Format

8. TABLE 1 ADDRESS LENGTH COMPARISON

9. 4 Lower Layer Protocols based on SCCP/IP for the Control Plane on the Iu interface 4.1 Radio Access Network APPLICATION Part (RANAP) 4.2 SCCP layer 4.3 SCCP Adaptation Layer 4.4 IP Layer 4.5 Service Specific Connection Oriented Protocol (SS COP) Layer 4.6 ATM Adaptation Layer 4.7 ATM Layer

10. 5 GSM – UMTS INTERWORKING 5.1 SCCP/IP based protocol stack interworking 5.2 TCP/IP based protocol stack interworking

11. 6 CONCLUSION