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Optimized communication method of mobile node in proxy mobile IPv6 (Internet Protocol Version 6) domain and communication node in mobile IPv6 domain

A technology of mobile nodes and communication nodes, applied in the field of communication, can solve the problems of long transmission delay, blocking, and increasing the burden of LMA.

Inactive Publication Date: 2011-08-17
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a transmission scheme is obviously not optimal, which will lead to longer transmission delays, and it is easier to increase the burden on the LMA and cause congestion

Method used

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  • Optimized communication method of mobile node in proxy mobile IPv6 (Internet Protocol Version 6) domain and communication node in mobile IPv6 domain
  • Optimized communication method of mobile node in proxy mobile IPv6 (Internet Protocol Version 6) domain and communication node in mobile IPv6 domain
  • Optimized communication method of mobile node in proxy mobile IPv6 (Internet Protocol Version 6) domain and communication node in mobile IPv6 domain

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Embodiment Construction

[0032] The invention provides an optimized communication method for PMIPv6 nodes and MIPv6 nodes. The basic idea is: learn from the routing optimization process in MIPv6, and establish an optimized routing path between MAG and CN, so that MAG can directly communicate with CN instead of MN.

[0033] Provide a specific example of the present invention below, and combine Figure 8 Specific embodiments of the present invention will be described in detail.

[0034] 1. The example topology is as follows: Figure 8 As shown, the address of CN is cec0:0:0:1::1 / 64, the address of LMA is aec0:0:0:1::1 / 64, and the address of MAG is bec0:0:0:1: :1 / 64. The MAG has a local routing function, that is, the value of the local routing flag is 1.

[0035] After the MN is connected to the MAG, it sends an RA request to the MAG according to the regulations in PMIPv6. The MAG sends a PBU to the LMA. The LMA replies with a PBA message and allocates an HNP to the MN. After receiving the PBA, the M...

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Abstract

The invention relates to a routing optimization method of communication between a mobile node in a PMIPv6 (Proxy Mobile IPV6 (Internet Protocol Version 6)) domain and a communication node in a MIPv6 (Mobile IPv6). The routing optimization method is realized by expanding functions of an MAG (Mobile Access Gateway) so that the MAG can support a BU / BA (Binding Update / Binding Acknowledgement) message, a HoTi / HoT message and a CoTI / CoT message in the MIPv6. The MAG has a local routing function; when receiving data messages from an MN (Mobile Node), the MAG can look up a routing table; if a corresponding table entry is looked up, the table entry forwards the data messages; and if the corresponding table entry is not looked up, a routing optimization process is started. The routing optimization process comprises the steps: the MAG sends an LRI (Local Routing initialization) message to an LMA (Local Mobility Anchor) and receives an LRA (Local Routing Acknowledgement) message replied by the LMA; the MAG starts an RRP (Return Routability Procedure); and the MAG sends the BU message to an CN (Communication node) and receives a BA message replied by the CN. After the optimization process is finished, the MAG can establish a new routing table entry so that the MAG can be directly communicated with the CN.

Description

technical field [0001] The invention relates to the field of communication, in particular to an optimized communication method for proxying a mobile node in the mobile IPv6 domain and a communication node in the mobile IPv6 domain. Background technique [0002] At present, the IETF has promulgated RFC3775 (MIPv6), a solution for carrying mobile communications over an IPv6 network. According to the regulations in MIPv6, a mobile node (MN) can directly communicate with a correspondent node (CN). When the location of the MN changes, the MN needs to complete the update process, which includes three stages: 1. The MN first sends a Binding Update message (BU) to the Home Agent (HA), and receives a Binding Confirmation message from the HA ( BA); 2. MN starts the RRP process, sends HoTI and CoTI messages to CN, and receives HoT and CoT messages from CN, wherein HoTI / HoT messages are forwarded by HA; 3. MN sends BU messages to CN, and receives messages from CN BA news. [0003] Ob...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L29/08H04L12/56H04L45/74
Inventor 马争鸣王波涛张飞王琳王可张荀张武梁东桓
Owner SUN YAT SEN UNIV
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