Data transmission method and system and core network gateway during switching of heterogeneous IP network

A data transmission method and core network gateway technology, applied in the field of communication, can solve problems such as packet loss, save storage space and reduce packet loss rate.

Active Publication Date: 2008-07-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The embodiment of the present invention provides two data transmission methods when switching between heterogeneous IP networks, so as to solve the packet loss problem existing in the prior art when switching between heterogeneous IP networks

Method used

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  • Data transmission method and system and core network gateway during switching of heterogeneous IP network
  • Data transmission method and system and core network gateway during switching of heterogeneous IP network
  • Data transmission method and system and core network gateway during switching of heterogeneous IP network

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Experimental program
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Embodiment 1

[0073] This embodiment describes the process of UE handover from UTRAN or Evolved RAN to non-3GPP access system (MIP protocol is used between non-3GPP access system and SAE Anchor for communication). Since handover from Evolved RAN to non-3GPP access system The process of switching from UTRAN to non-3GPP access system is similar to the process of switching from UTRAN to non-3GPP access system. In the following, only the switching process of the former will be described. In the following process, the switching process of the latter will be replaced by replacing MME / UPE with SGSN.

[0074] see Figure 6 , which is a schematic diagram of the network handover process in the first embodiment of the present invention. The UE transmits service data through the UE-MME / UPE-SAE Anchor path. During the handover process of the UE from the Evolved RAN to the non-3GPP access system, the UE's The specific steps of the business data transmission process include:

[0075] 1~3. The UE detects ...

Embodiment 2

[0090] This embodiment describes the process of switching UE from UTRAN or Evolved RAN to non-3GPP access system (MOBIKE protocol is used between non-3GPP access system and SAE Anchor to communicate), due to switching from Evolved RAN to non-3GPP access system The process of switching from UTRAN to non-3GPP access system is similar to the process of switching from UTRAN to non-3GPP access system. In the following, only the switching process of the former will be described. In the following process, the switching process of the latter will be replaced by replacing MME / UPE with SGSN.

[0091] see Figure 7 , which is a schematic diagram of the network handover process in the second embodiment of the present invention. The UE transmits service data through the UE-MME / UPE-SAE Anchor path. During the handover process of the UE from the Evolved RAN to the non-3GPP access system, the UE's The specific steps of the business data transmission process include:

[0092] 1~3. The UE dete...

Embodiment 3

[0110] This embodiment describes the process of switching UE from a non-3GPP access system (MOBIKE protocol is used between the non-3GPP access system and SAEAnchor to communicate) to UTRAN or Evolved RAN. The process is similar to the process of handover to UTRAN, and only the former handover process will be described below. In the following process, the latter handover process will be replaced by replacing MME / UPE with SGSN.

[0111] see Figure 8 , is a schematic diagram of the network switching process of the third embodiment of the present invention. When the UE accesses the non-3GPP system, it follows the routing path: UE——non 3GPP gateway——SAE Anchor to transmit service data, and the UE switches from the non-3GPP access system to the In the process of Evolved RAN, the specific steps of the UE service data transmission process include:

[0112] 1. The UE decides to switch, and initiates the process of updating the IPSec tunnel. The UE sends an informational request mes...

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Abstract

The invention discloses a method for data transmitting data when a heterogeneity IP network is switched, a heterogeneity IP network system and a core network gateway. The core network gateway is used as different anchor point accessed to the system for the heterogeneity IP network. When the user terminal starts a switching in the heterogeneity IP network, the source network is used for sending a instruction information of retaining business to the core network gateway; the core network gateway carries out a caching to the sent business data of the user terminal according to the instruction information; after the switching is completed, the user terminal sends instruction information of canceling the detainment to the core network gateway through the target network; the core network gateway sends the cached business data to the user terminal according to the instruction information. By adopting the invention, when an activated state user terminal switches between the heterogeneity IP networks, a packet loss rate can be reduced and the switching relay also can be reduced.

Description

technical field [0001] The invention relates to the field of communication, in particular to a data transmission method during switching of a heterogeneous IP network, a heterogeneous IP network system and a core network gateway. Background technique [0002] The 3GPP system includes a radio access network (Radio Access Network, RAN) and a core network, wherein the radio access network is used to handle all wireless-related functions, and the core network handles all voice calls and data connections in the system, and realizes communication with external The switching and routing functions of the network. The core network is logically divided into a circuit switched domain (Circuit Switched Domain, CS) and a packet switched domain (Packet Switched Domain, PS). [0003] see figure 1 , is a schematic diagram of the PS part of the 3GPP packet domain. [0004] Such as figure 1 As shown, the main network elements in the PS core network of 3GPP include SGSN (Serving GPRS Suppo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04Q7/38
Inventor 闫文俊刘丽娜王珊珊肖晓玲
Owner HUAWEI TECH CO LTD
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