Research on Separation of Identifiers and Locators for Next Generation Network System
|School||Shanghai Jiaotong University|
|Course||Electronics and Communication Engineering|
|Keywords||Identity Location Identification Identifier separation Mobility Management LISP Shinap|
Achieve end hosts in the case of mobile and multi-homed seamless handover is the next generation network (NGN) is one of the important goals. In the existing TCP / IP protocol architecture in, IP address as the identity of the host identifier and location identifier dual role. IP address as the identity is bound to the upper application at the same time, and as a location identifier used to determine the packet forwarding path. This dual role attribute for achieving end-host moves, multi-homing and secure communication, etc. bring certain limitations. The key to solve these problems is separate identity and location of the IP address identifies the function to ensure that the network layer protocols and upper layer protocol between independence and transparency. Thus the terminal identifier separation technology in achieving mobility and multi-homing of switch has significant advantages, become a research hotspot in recent years, academia has broad application prospects. This paper identifies the Separation Agreement and mobility management mainly for the following several aspects: First, this paper analyzes three main logo separation agreement: HIP, Shim6, and LISP. They elaborate on the basic idea of ??the design and the main purpose of the communication process. From the protocol security, mobility, multi-homing of support, backward compatibility and other aspects of the deployment of the three protocols difficulty conducted a comprehensive analysis and evaluation. Then this paper, the principle of mobility management mechanisms needed to achieve its objectives, and describes the existing mobility management mechanisms - Mobile IP and its fast switching method. Subsequent analysis identifies the separation agreement in mobility management mechanism on the basis of the characteristics and introduces HIP and Shim6 two protocols for mobility principle and its workflow. Introduction identifier separation agreement, the upper layer protocol binding with the host identity can guarantee when switching upper-layer protocols are not affected. Based on an analysis of existing technologies, we propose a version 1 and 1.5 in LISP implemented on mobile IP switching method - M-LISP, and a detailed description of their workflow. The agreement will end hosts care-of address as the EID, and its access router address as the RLOC. HoA and CoA using HA maintains the mapping between, and use the access router maintains EID and RLOC mapping between, so as to solve the existing problem of LISP version of mobility. By analyzing the characteristics of LISP protocol itself, we further propose a fast handover method - FH-LISP, solve the LISP version 2 and version 3 of the mobile switching problem. FH-LISP protocol eliminates the concept of a home agent, thus saving return routability testing time. And the switching process using the link layer trigger mechanism, to further reduce the handover latency. Performance analysis shows, FH-LISP protocol not only have fewer handover latency, but also reduces the overhead of packet switching process and the required buffer space is also smaller. Switching performance FH-LISP protocol is superior to FMIPv6 protocol, and thus FH-LISP protocol can better support real-time applications. Finally, this paper proposes a new identity and location identifier separation agreement - Shinap. Shinap identity and location to achieve the complete separation of identification and can be well compatible with existing IPv6 network, which can be deployed progressively implement the agreement. Shinap mobile host protocol framework provides a solution to achieve the continuity of communication when the mobile host, and host accessibility after the movement. Shinap protocol supports multi-homed hosts, according to the parties a list of IP addresses to communicate automatically select the appropriate IP address, and the IP address when adding or failure, timely communication on the host being updated to improve the reliability of communication . And an identification of the separation, Shinap protocol for communication security is also improved to some extent.