NAT conversion method and system based on mobile internet

A technology of mobile Internet and conversion method, applied in the field of mobile communication, can solve the problems such as the inability to meet the growth rate of the number of Internet users of telecommunication operators, insufficient use of IPv4 addresses, and duplication of user access IP addresses, etc., and achieve high-speed IP address and port conversion. , The effect of efficient packet offloading processing mechanism

Active Publication Date: 2016-12-28
JINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current network of telecom operators, in order to solve the problem of insufficient IPv4 addresses when a large group of mobile communication terminal users access the Internet, IP address translation is used to realize the sharing of public network IP addresses, but this leads to a large number of mobile Internet platforms. User access IP addresses are duplicated, which makes it more difficult to identify users. In addition, in order to improve the performance of telecom operators' IP address translation, most of them currently use independent multi-core CPUs for processing, and the main processing CPU unit performs splitting and distribution. However, At present, this processing method cannot meet the growth rate of the number of Internet users of telecom operators.

Method used

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  • NAT conversion method and system based on mobile internet
  • NAT conversion method and system based on mobile internet
  • NAT conversion method and system based on mobile internet

Examples

Experimental program
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Effect test

Embodiment 1

[0055] like figure 1 As shown, this embodiment provides a NAT conversion method based on the mobile Internet, which is realized by using a hybrid NAT mapping of static IP address mapping and dynamic port mapping, including calling NAT at the IP layer egress, calling NAT at the IP layer ingress, and resource release and recovery;

[0056] like figure 2 As shown, the details of invoking NAT at the egress of the IP layer are as follows:

[0057] 1) transmit the packet encapsulated with the internal local IP address as the source IP address and the external local IP address as the destination IP address to the NAT router;

[0058] 2) The NAT router checks whether the routing table has a routing table entry that contains the IP address of the data packet, and if so, checks whether the data packet is an access data packet sent from the internal network to the external network, if it is performed in step 3), otherwise it is performed in step 4); if none, the packet is discarded; ...

Embodiment 2

[0073] This embodiment provides a kind of NAT conversion system based on mobile Internet, and described system adopts the hybrid NAT mapping of static IP address mapping and dynamic port mapping to realize, and comprises the NAT calling module at the exit of IP layer, the NAT calling module and resources at the entrance of IP layer Release and recovery module; the NAT call module at the exit of the IP layer includes a first data packet transmission unit, a first routing table entry inspection unit, a first NAT table entry inspection unit, a first data packet IP address judgment unit and an identification data flow and generating a log recording unit; the NAT calling module at the entrance of the IP layer includes a second data packet transmission unit, a second routing table item checking unit, a second NAT table item checking unit and a second data packet IP address judging unit, wherein:

[0074] The first data packet transmission unit is used to transmit the data packet enca...

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Abstract

The invention discloses an NAT method and system based on the mobile Internet. The method is achieved through mixed NAT mapping of mapping of a static IP address and mapping of a dynamic port. The method includes the steps that NAT is called at the exit of an IP layer and NAT is called at the entrance of the IP layer; NAT is called at the exit of the IP layer to transmit a data package to an NAT router; whether a routing table entry comprising the destination IP address of the data package exists or not is checked; whether an NAT table entry comprising an interior local IP address and an interior global IP address exists in an NAT address mapping table of a resource pool or not is checked; NAT is called at the entrance of the IP layer to transmit the data package to the NAT router; whether the routing table entry comprising the destination IP address of the data package exists or not is checked; whether a HASH table entry comprising an interior global IP address and an interior local IP address exists in the NAT address mapping table of the resource pool or not is checked. The NAT method and system based on the mobile Internet can easily identify a mobile communication terminal user and can perform user access source tracing and analysis.

Description

technical field [0001] The invention relates to a NAT conversion method and system, in particular to a mobile Internet-based NAT conversion method and system. It belongs to the field of mobile communication. Background technique [0002] With the rapid development of the mobile Internet, a door to the Internet world has been opened for mobile communication terminal users. The mobile Internet combines the convenience of mobile communication and the rich content of the Internet, and has become a cross-field of the integrated development of the communication industry and the Internet industry. Has a huge market prospect. However, due to the fundamental difference between the mobile communication network and the Internet in terms of user identification, the identity identification in the mobile communication network is a mobile phone number, and the identification identification in the Internet is an IP address. Due to the large number of mobile communication terminal users, In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04W8/26
Inventor 郑力明
Owner JINAN UNIVERSITY
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