TSG-SA Working Group 1 (Services) meeting #6 TSGS1#6(99)917
San Diego USA 29th Nov. to 3rd Dec. 1999
Title: New services and IPv6
Related to: R00 Ad Hoc
The new services created in the Release 2000 All-IP option will create a need for enhanced use of the IETF defined Internet Protocols. Among these requirements are the need for increased number of Internet Protocol (IP) addresses, security, mobility, and Quality of Service. These issues are especially interesting for the new services identified for the R00 All-IP option. Among others, the services include the functionalities that handle Multimedia sessions over IP.
2IP version 4
The IP version 4 has limitations. The most significant and restrictive limitation is the number of possible IP addresses. This limits the number of possible Internet nodes in the global Internet network. The explosion in the number of nodes in the Internet through for instance the necessity of having an IP address per terminal in the UMTS network would exhaust the available public IP addresses quite soon. Among other limitations, the lack of sufficient security and Quality of Service make the IPv4 unfeasible in the long run.
3IP version 6
The version 6 of the Internet Protocol could be the solution for the UMTS IP services. It has a sufficient address space for the UMTS. In addition, in built security, mobility, and enhanced quality of service add value to the next generation of the Internet protocol. These and other features of the IPv6 make the protocol future proof for long term solutions.
The UMTS and GPRS shall require great numbers of IP addresses. Thus, the IP address space shall exhaust in the future. In addition, the UMTS requirements for security in the Internet services and in the new UMTS services located in public IP networks are much higher that the requirements for the traditional Internet services. The Quality of Service is an issue that is far more important in the UMTS networks than it has been in the Internet until now.
The IP version 6 encompasses the security and mobility already in the protocol. In addition, it includes better integration with the Quality of Service protocols. These features can be added as external protocols to the IP version 4. Thus, the level of integration of such attributes in the IPv4 is not as high as it is in the IPv6. In addition, the extended address space in the IP version 6 make it more applicable for the mobile use. The IPv4 address space shall run out in the near future. Hence, sooner or later the IP based services of UMTS have to be converted to IPv6. Thus, the IP version 6 is the only future proof possibility for the UMTS's IP based services in the Release 2000.
The proposal is that the S1 would consider IPv6 as the basis of the IP based services (like multimedia calls) in the Release 2000.