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Method and device for completing network address translation keep-alive by adopting port control protocol

A port control protocol and network address translation technology, applied in network data management, power management, electrical components, etc., can solve the problems of increasing air interface burden, large wireless communication, and consuming user equipment battery life

Inactive Publication Date: 2014-07-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the existing technology has the following problems: frequent keep-alive communications consume the battery life of user equipment during the NAT keep-alive process; lead to a large number of wireless communications and increase the burden on the air interface

Method used

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  • Method and device for completing network address translation keep-alive by adopting port control protocol
  • Method and device for completing network address translation keep-alive by adopting port control protocol
  • Method and device for completing network address translation keep-alive by adopting port control protocol

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Experimental program
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Embodiment 1

[0101] In the first embodiment, the public data network gateway serves as the PCP client and the PCP server to jointly complete the NAT keep-alive. In this embodiment, the P-GW / GGSN is used as the specific network element of the public data network gateway, and the MME / SGSN is used as the specific network element of the control network element. like image 3 As shown, the P-GW or GGSN judges that it needs to perform NAT keep-alive instead of the UE, and the P-GW or GGSN sends a PCP request to the PCP Server, carrying the private network IP address and port of the UE that needs to keep alive. The PCP server periodically sends a keep-alive message to the NAT instead of the UE. Including four implementations.

[0102] Implementation method one

[0103] In the first implementation, the UE sends the internal address and port of the UE to the P-GW / GGSN through the MME / SGSN of the core network, and the P-GW / GGSN receives the message from the UE through the signaling path, which co...

Embodiment 2

[0173] Figure 8 It is a schematic diagram of UE acting as a PCP client and a PCP server to jointly complete NAT keep-alive. As shown in the figure, the UE itself acts as a PCP client and sends a PCP request to the PCP server. There are two ways to route the UE's PCP request to the PCP server: in the first implementation, the UE carries the PCP request message in the PCO of the control signaling message and sends the control signaling message to the P-GW / GGSN, and the P-GW / The GGSN sends the PCP request message to the PCP server; in the second implementation, the UE learns the address of the P-GW / GGSN, sends the PCP request to the P-GW / GGSN, and then the P-GW / GGSN queries and selects a PCP server , routing the PCP request sent by the UE to the PCP server.

[0174] Implementation method one

[0175] The UE carries the PCP request message in the PCO of the control signaling message, and sends the control signaling message carrying the UE's internal address and port to the P-G...

Embodiment 3

[0226] like Figure 11 As shown, when the application server (AF) as the PCP client determines that the UE needs to perform NAT keep-alive, it sends a PCP request carrying the internal address and port of the UE to the Policy and Charging Rules Function (PCRF), and the PCRF sends the PCP request to PCP server. After receiving the PCP request, the PCRF performs the function of PCP Proxy, forwards the PCP request to the PCP server, and the PCP server sends the keep-alive message to the NAT instead of the UE.

[0227] It should be noted that the AF obtains the internal IP and port of the UE, which may be reported by the UE when the UE registers with the network where the AF is located, or obtained by the AF from the P-GW / GGSN through the PCRF query.

[0228] like Figure 12 As shown, the method includes steps 1200 to 1216:

[0229] Step 1200: The UE attaches to the 3GPP network and connects to the core network control network element MME / SGSN serving it. The MME / SGSN selects ...

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Abstract

The invention discloses a method and a device for completing network address translation keep-alive by adopting the port control protocol. A port control protocol (PCP) client is used to acquire an internal address and a port of a user device and send a PCP request carrying the internal address and the port of the user device to a port control protocol (PCP) server, and the PCP server is used to send a keep-alive request carrying the internal address and the port of the user device to a network address translation (NAT) device. According to the invention, the port control protocol (PCP) is adopted, so the communication of the user device and the network on an air interface can be reduced, so that the battery loss of the user device that consumed in the NAT keep-alive process can be reduced.

Description

technical field [0001] The present invention relates to the field of mobile communications, in particular to a method and device for implementing network address translation keep-alive by using port control protocols applied to a 3rd Generation Partnership Project (3GPP) network. Background technique [0002] In order to maintain competitiveness in the communication field, the 3GPP standard working group proposed 3G and 4G 3GPP networks, and proposed the concept of all-IP. The all-IP network is to improve and optimize the previous 3GPP system from the system concept level, including integrating with IP technology, supporting various access systems, and providing users with high-quality and guaranteed comprehensive services on this basis, ensuring that future Competitive for 10 years or more. [0003] An all-IP network first needs an address mechanism with sufficient capacity. Due to the need to support multiple access systems, the address capacity requirements of an all-IP...

Claims

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Application Information

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IPC IPC(8): H04W8/26H04W52/02H04L29/12
CPCH04L61/2553H04L61/256
Inventor 徐绍华李志军谢宝国
Owner ZTE CORP
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