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Method for switching 3G gateway to 4G gateway

A 3G network and 4G technology, applied in the field of network communication, can solve the problems of unable to complete handover, PGW can not identify control plane and user plane tunnel information, etc., to protect existing investment, avoid upgrade or elimination, and achieve the effect of good feasibility

Active Publication Date: 2020-04-24
北京长焜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the PGW and GGSN are set separately and the existing technical process is adopted, the PGW cannot identify the control plane and user plane tunnel information of the original user, so the handover cannot be completed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] A switching method from a 3G gateway to a 4G gateway, comprising:

[0052] Step 1: The terminal moves to the coverage area of ​​the 4G network. After the terminal performs wireless measurement, it reports to the radio network controller RNC, and the RNC decides to initiate a handover;

[0053] Step 2: The RNC of the 3G network sends a redirection request to the serving GPRS support node SGSN of the 3G network, carrying target side information;

[0054] Step 3: The 3G network SGSN determines the target mobility management entity MME according to the 4G tracking area information, and forwards the redirection request message to the target 4G network side MME, and the SGSN carries the target 4G base station and user context information;

[0055] Step 4: The new MME sends a session creation request message to the serving gateway SGW after being judged by C1;

[0056] Step 5: The SGW locally creates a bearer user plane tunnel and a control plane tunnel, and then sends a sessio...

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PUM

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Abstract

The invention belongs to the technical field of network communication, in particular to a method for switching from a 3G gateway to a 4G gateway. The method comprises the steps: simulating behaviors of a part of SGSN through a PGW, and modifying a part of 4G core network flow, so as to solve the switching problem from the 3G gateway to the 4G gateway, thereby facilitating the flexible deployment of a mobile network gateway, employing old GGSN equipment to avoid upgrading or elimination of an original GGSN, and protecting existing investment; meanwhile, the routing roundabout caused when a combined gateway is far away from the SGSN or the SGW can be avoided, the consistency of an existing relocation process is not affected as much as possible on the basis of the existing relocation process,and therefore, the good feasibility is achieved.

Description

technical field [0001] The invention belongs to the technical field of network communication, relates to an interoperability process between a 4G core network and a 3G core network, and specifically relates to a switching method from a 3G gateway to a 4G gateway. Background technique [0002] In some remote areas and underdeveloped areas, due to the low utilization rate and the low willingness of operators to invest in 4G, the 3G network will still be the main communication network in these areas. Good support for the interoperability process, but many old GGSN devices cannot be upgraded to PGW through software, or the upgrade cost is high, and the construction of 4G network must be upgraded to support smooth switching from 3G network to 4G network. If GGSN and PGW are not supported For separate network deployment, the existing GGSN may face elimination, and some small operators cannot afford it. To use the old GGSN equipment to support the handover process from 3G to 4G, it...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/12H04W36/38
CPCH04W36/0033H04W36/0077H04W36/38H04W36/0058H04W36/125
Inventor 刘玉宾张全煜潘子一黄瑞华胡永亮汤小丽
Owner 北京长焜科技有限公司