Method for deploying subnet mobile in separation mechanism mobility management system

Abstract

The invention relates to a method for deploying subnet mobile in a separation mechanism mobility management system. The method comprises the following steps of expanding a separation mechanism mobility management system, expanding the functions of AGW (access gateway), CGW (control gateway) and DGW (data gateway) in the system, and modifying the signaling interacted between entities to support the subnet mobile. In order to support preamble proxy, a DHCP (dynamic host configuration protocol) relay proxy is deployed on the AGW, a DHCP server is deployed on the CGW, and a mobile router (MR) is used as a DHCP client, so that the preamble can be allocated for an MNN (mobile network node) through correct interaction by the AGW and the DHCP relay proxy. According to the method provided by the invention, the mobility management network based on the separation mechanism is combined with the subnet mobile, so that the communication under the condition that the MR carriers an LFN (local fixed node) is realized; the DHCPv6 preamble proxy is supported, the preamble is allocated for the LFN by using dynamic address allocation, thus, the utilization of the address is increased, and the configuration of client TCP / IP (transmission control protocol / Internet protocol) is greatly simplified.

Description

technical field [0001] The invention relates to a method for deploying subnet mobility in a split mechanism mobility management system. Background technique [0002] With the rapid growth of Wi-Fi handheld terminals and the increasing demand for Internet access, NEMO technology that can manage a group of nodes has attracted much attention. In order to support NEMO, RFC3963 standardizes the basic NEMO support protocol (NEMO-BSP), but this agreement supports NEMO in MIPv6. With the emergence of PMIPv6 based on network management, IETF MEXT and IETF NETEXT working groups have also proposed some drafts for NEMO support in PMIPv6. [0003] The patent application (Application No.: 201110152731) proposes a new mobility management protocol, called the separation mechanism mobility management system, which has good functions, performance and scalability, but does not support subnet mobility. [0004] 1.2 Prior art related to the present invention one [0005] The network model of ...

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Problems solved by technology

[0025] In the situation described in this draft, LMA not only needs to process control signaling but also forward data packets. When LMA fails, it will lead to paralysis of the network, that is, poor reliability

Similarly, this prefix proxy scheme is also based on the PMIPv6 protocol, which has the inherent defect of IP address ambiguity

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