Research achievements on the new generation Internet architecture and protocols
Science China Information Sciences
Despite the great success achieved by the Internet, it has been facing increasingly severe technical challenges that include address exhaustion, low-level network security and trustworthiness, weak quality-ofservice control capability, limited bandwidth, and poor support toward mobility. In this paper we summarize the principal challenges facing the current Internet, introduce the research status of the future Internet, analyze the principal design goals of the new generation Internet
... methods and models of the present Internet architecture, introduce the research achievements made under the new generation Internet architecture in detail, and propose our next-step research priorities and perspectives in the face of an increasing number of innovative Internet applications. toward developing the new generation Internet: IPv6 was officially released in 1995. Besides its massive address space, IPv6 can provide worthwhile solutions toward the current technical challenges in security, high performance transmission, QoS control, mobility and other aspects. During these years, considerable progress has been globally made in the core technologies and standards for the new generation Internet, as well as in building large-scale trial networks, and in other aspects. People have become increasingly aware of the importance, complexity, and difficulty involved in developing the new generation Internet, and there is a general consensus among different countries that developing the new generation Internet is an important part in developing future information technology. In 2009, eight units including the Tsinghua University, National University of Defense Technology, Beijing University of Posts and Telecommunications, etc., shared the National "973" Program called "The Basic Research on the Internet Architecture and its Protocols "This project summarized the key scientific issues involved in the architecture of the new generation Internet based on the achievements of the previous National "973" Program called "Theoretical Research on New Generation Internet Architecture" With the trends in the evolution from IPv4 to IPv6, the former project aims toward addressing key scientific issues in the IPv6 environment and focus on the following five: (1) Scalability and evolvability of the Internet architecture; (2) Dependability and convergence of large-scale routing; (3) Efficient network transmission of massive data; (4) Real-time delivery in heterogeneous connectionless networks; (5) Crossdomain autonomous network management. After nearly five years of investigations, a number of important research achievements regarding the exploration of fundamental architectural and key technologies of the new generation Internet, as well as experimental validation, application, and industrialization, have been made in this project. It is worth mentioning that several IETF standards and ideas winning national awards were developed during this period. Till now, we have submitted nearly 20 IETF draft standards: 2 of them is going to be approved as a Request for Comments (RFC) and 6 of them are going to be approved as working group drafts. Moreover, the research involving source validations has garnered the first-class Award of Technology Invention authorized by the Chinese Ministry of Education in 2012. IPv4/IPv6 tunneling techniques have obtained the first-class Science and Technology Award issued by the China Institute of Communications. The remainder of this paper is organized as follows. First we summarize the principal challenges facing the current Internet and introduce the pivotal progress achieved in the new generation Internet research throughout the world. Then we analyze the principal design goals of the new generation Internet and present evaluation methods and models. Thereafter, we introduce the research achievements made under the "Basic Research on the Internet Architecture and its Protocols" project. In the last part, our nextstep research priorities and perspectives have been proposed in the face of the new situations arising with the increasing number of innovative Internet applications.