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Method and system for binding rx session to gx session and routing proxy node

A proxy node and routing technology, applied in the field of communication, can solve problems such as the inability to bind Gx sessions and Rx sessions

Active Publication Date: 2018-10-02
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] NAT device deployment brings a problem to the PCC (Policy Control and Charging) architecture, namely, since the IP address in the Gx session is the private network IP address before the NAT device, and the IP address in the Rx session is behind the NAT device The public IP address prevents the Gx session from being bound to the Rx session

Method used

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  • Method and system for binding rx session to gx session and routing proxy node
  • Method and system for binding rx session to gx session and routing proxy node
  • Method and system for binding rx session to gx session and routing proxy node

Examples

Experimental program
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Effect test

Embodiment 1

[0091] Embodiment 1: Home Routed (home route) scenario, AF is in the visited place, see Figure 6 , the binding process between Rx session and Gx session is as follows:

[0092] Step S601, the user Gx session is set up, HDRA records the binding relationship between the GX session (the GX session can be identified with a private network IP address) and the HPCRF;

[0093] Step S602, AF initiates an Rx session request, and inserts NATed-Source-Port in AAR (Authorization Request), which is used to carry the source port address of the connection between the NAT device and AF, and Frame-IP-Address is used to carry the user's IP address after NAT conversion Public IP address, and send AAR to VDRA;

[0094] Step S603, VDRA finds that the AAR carries NATed-Source-Port, and the NAT support switch is turned on, so it initiates a NAT query request (NQR), because VDRA and NAT are not in the same domain, so the NAT device address and NAT translation will not be configured in VDRA Accordi...

Embodiment 2

[0103] Embodiment 2: Home Routed scenario, AF is at home, see Figure 7 , the binding process between Rx session and Gx session is as follows:

[0104] Step S701, the user Gx session is set up, and HDRA records the binding relationship between the GX session (the GX session can be identified with a private network IP address) and the HPCRF;

[0105] Step S702, AF initiates an Rx session request, and inserts NATed-Source-Port in AAR (Authorization Request), which is used to carry the source port address of the connection between the NAT device and AF, and Frame-IP-Address is used to carry the user's IP address after NAT conversion Public IP address, and send AAR to HDRA;

[0106] Step S703, HDRA finds that AAR carries NATed-Source-Port, and the NAT support switch is turned on, so it initiates a NAT query request, because HDRA and NAT are in the same domain, so the NAT device address and NAT-translated user will be configured in HDRA The mapping relationship of the public netw...

Embodiment 3

[0111] Embodiment 3: Home Routed scene, AF is in the third place, see Figure 8 , the binding process between Rx session and Gx session is as follows:

[0112] Step S801, the user Gx session is set up, and HDRA records the binding relationship between the GX session (the GX session can be identified with a private network IP address) and the HPCRF;

[0113] Step S802, AF initiates an Rx session request, and inserts NATed-Source-Port in AAR (Authorization Request), which is used to carry the source port address of the connection between the NAT device and AF, and Frame-IP-Address is used to carry the user's IP address after NAT conversion Public network IP address, and send the AAR to the third DRA;

[0114] Step S803, the third DRA finds that the AAR carries NATed-Source-Port, and the NAT support switch is turned on, so it initiates a NAT query request, because the third DRA and NAT are not in the same domain, so the third DRA will not configure this The mapping relationship...

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Abstract

The invention discloses a method, a system and a route agent node for Rx session and Gx session binding, and relates to the communication field. According to the embodiment of the invention, a DRA receives an Rx interface message sent by an AF; the Rx interface message carries a public network IP address and a source port for the connection between the AF and NAT equipment; if the public network IP address is in the current domain, the DRA queries the NAT equipment corresponding to the public network IP address according to a configured mapping relation between the public network IP address and a NAT equipment address; if the public network IP address is not in the current domain, the NAT equipment corresponding to the public network IP address is queried by a DRA in other domain; then a private network IP address corresponding to the public network IP address and the source port is obtained from the NAT equipment; and a corresponding Gx session is searched according to the private network IP address, and the binding between an Rx session and the Gx session is realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for binding an Rx session and a Gx session, and a routing proxy node. Background technique [0002] With the rapid development of the Internet and mobile Internet, there is a serious shortage of IPV4 addresses, while the development of IPV6 is relatively slow. In order to solve the problem of address shortage in the communication network, many operators deploy NAT (Network Address Translation) devices in the communication network to save address resources. [0003] NAT device deployment brings a problem to the PCC (Policy Control and Charging) architecture, namely, since the IP address in the Gx session is the private network IP address before the NAT device, and the IP address in the Rx session is behind the NAT device The public IP address prevents the Gx session from being bound to the Rx session. Contents of the invention [0004] A technical problem ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/14H04L29/12
Inventor 周伟聂恒毛聪杰赵甡晟夏旭
Owner CHINA TELECOM CORP LTD