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Message sending method, device, system, and CGN device

A technology for sending messages and devices, applied in the field of communications, and can solve the problem that public network devices cannot access private network devices.

Inactive Publication Date: 2019-01-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a message sending method, device, system, and CGN equipment to at least solve the problem in the related art that the public network equipment cannot access the private network equipment under the home gateway under the DS-Lite environment

Method used

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  • Message sending method, device, system, and CGN device
  • Message sending method, device, system, and CGN device
  • Message sending method, device, system, and CGN device

Examples

Experimental program
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Embodiment 1

[0047] The embodiment of this application can run on figure 1 In the shown network networking, figure 1 is a schematic diagram of network networking provided according to an embodiment of the present invention, such as figure 1 As shown, the network networking includes: downlink equipment (that is, private network equipment), CPE (a kind of home gateway), CGN equipment, and public network terminals (that is, public network equipment); wherein, the downlink equipment is downlink On the CPE, the downlink device interacts with the CPE through the IPv4 network, the CPE and the CGN device interact through the IPv6 link, and the CGN device interacts with the public network terminal through the IPv4 link.

[0048] In this embodiment, a message sending method running on the above-mentioned network networking is provided, figure 2 is a flow chart of a message sending method according to an embodiment of the present invention, such as figure 2 As shown, the process includes the fol...

Embodiment 2

[0066] In this embodiment, a device for sending a message is also provided, which is used to implement the above embodiments and preferred implementation modes, and what has already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0067] image 3 is a structural block diagram of a message sending device according to an embodiment of the present invention, such as image 3 As shown, the device includes:

[0068] The receiving module 32 is configured to receive a request message sent by a public network device; wherein, the request message carries the following information: destination IP address, destination port information, and the public network IP address of ...

Embodiment 3

[0080] The embodiment of the present invention also provides a carrier-level network address translation CGN device, Figure 4 is a structural block diagram of a CGN device provided according to an embodiment of the present invention, such as Figure 4 As shown, the CGN equipment includes:

[0081] The processor 42 is configured to receive a request message sent by a public network device; wherein, the request message carries the following information: destination IP address, destination port information, and the public network IP address of the public network device; determine the public network IP address according to the public network IP address; The private network IP address of the private network device and the port information of the private network device that the network device needs to access; replace the destination IP address in the request message with the private network IP address of the private network device, and replace the destination port information with ...

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Abstract

The present invention provides a message sending method, a message sending device, a message sending system, and a CGN device. The method includes the following steps that: a request message sent by apublic network device is received, wherein the request message carries a destination IP address, the port information of a destination, and the public network IP address of the public network device;the private network IP address of a private network device to be accessed by the public network device and the port information of the private network device are determined according to the public network IP address; the destination IP address in the request message is replaced with the private network IP address of the private network device, the port information of the destination is replaced with the port information of the private network device, so that a first message is obtained; and the first message is sent to a home gateway which the private network device is plugged in. With the message sending method, the message sending device, the message sending system, and the CGN device of the invention adopted, a problem that the public network device cannot access the private network device under the home gateway in a DS-Lite environment in the prior art can be solved, and the traversal of the public network device to the private network device is realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a message sending method, device, system, and CGN equipment. Background technique [0002] The biggest problem with Internet Protocol version 4 (IPv4 for short) is that network address resources are limited, which seriously restricts the application and development of the Internet. The sixth version of the Internet Protocol (Internet Protocol version 6, referred to as IPv6) came into being. IPv6 can not only solve the problem of the number of network address resources, but also solve the obstacles for various access devices to connect to the Internet. However, due to the incompatibility between IPv6 and IPv4, in the current IPv4-dominated network environment, the smooth transition from IPv4 to IPv6 becomes the key to the success of IPv6. Generally speaking, there are many standards for IPv6 transition, and there are several Ten types, among which dual-stack and tunnel technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/28
CPCH04L12/2834H04L45/741H04L61/2517H04L61/2592
Inventor 尹小康韩文周冬平
Owner ZTE CORP
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