All-IPv6 網路與應用(II)

Network applications have undergone explosive
growth following improvements in computer
technologies and the development of the Internet.
An address on the IPv4 protocol is defined using 32
bits, insufficient to support IP network applications.
This issue becomes more complex when the number
of UMTS/GPRS users increases to 10 billion or
more on IP-based applications. The IETF Task
Force defined the IPv6 protocol to solve this
problem. An integrated research project “All-IPv6
Networks and Applications” was established to help
to build an All-IPv6 application environment for the
telecommunications industry. The aim of this
project was to develop advanced technologies and
systems for All-IPv6 networks, including the
handoff scheme, mobility management, multicast
service method, multimedia applications, security,
and QoS guarantee. The developed technologies
will be embedded into the All-IPv6 testbed. The
feasibility of this system will be investigated using
an open service platform. According to the
functional requirements of this project, the research
timeline is divided into three stages (phases).
The first-stage project focuses on the design of
the interworking system and high-quality data
communication services for All-IPv4/IPv6 networks.
Tasks include developing an interworking mechanism
among GPRS, WLAN, IPv4/v6 Router, Core MPLS
Switch and NBEN to support a “seamless
transmission” environment. The GPRS Emulator &
WLAN handoff service analysis, multicast service
planning, media stream control, and the open service
platform interface were performed.
The second-stage project focuses on the design
of All-IPv6 network and the service of highly
efficient multimedia application. We established the
"seamless transmission" environment and the pure
IPv6 network. More achievements we finished,
including the handoff service analyses of UMTS
Emulator between WLAN and GPRS respectively,
the seamless multimedia stream system of dynamic
multicast, and the integration of open service
platform and its APIs.
This work will provide a “highly efficient” and
“high quality” All-IPv6 network and application
environment. More key modules, including an
interworking scheme, a security module, a mobile
agent, and various protocols for improving system
QoS were developed. These modules will then be applied to the All-IPv6 network and applications to
provide responsive information services. We believe
that the results of this research solve outstanding
technical problems in All-IP network establishment,
handoff technology, wireless, mobility and high
quality assurance.