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Realization method and system of multi-packet data network connection

A technology of packet data network and implementation method, which is applied in the field of implementation method and system for establishing multi-packet data network connection, can solve problems such as inability to perceive and modify APN, inability to distinguish PDN networks, and inability to realize correct routing of datagrams, so as to achieve correct implementation performance, to ensure the effect of correct routing

Inactive Publication Date: 2010-06-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, for the case where the UE has access network switching but still needs to maintain the PDN connection, there is a problem with the modified APN method. When the UE switches from one access network to another access network, the newly accessed network device cannot Perception modifies the APN, so after the access network handover occurs, these PDN connections cannot be re-established between the UE and the multi-PDN network, so that the PDN network cannot be distinguished, and the correct routing of datagrams between the UE and the PDN network cannot be achieved

Method used

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  • Realization method and system of multi-packet data network connection
  • Realization method and system of multi-packet data network connection
  • Realization method and system of multi-packet data network connection

Examples

Experimental program
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Embodiment 1

[0060] Embodiment 1: UE handover between 3GPP access networks.

[0061] Such as Figure 4 As shown, the UE has established multiple PDN connections with multiple PDN networks through the 3GPP access network (Old MME identifier), that is, multiple default radio bearers have been established between the UE and S-GW1, and between S-GW1 and S-GW1 A PMIP tunnel is established between the P-GWs. At this time, the UE discovers a new 3GPP access network (New MME identifier), and handover needs to occur. The implementation steps are described as follows:

[0062] Step 401: UE initiates an attach request to a new 3GPP access network;

[0063] Step 402: The authentication process is completed between the UE and the new 3GPP access network;

[0064] Step 403: UE needs to initiate multi-PDN connection reestablishment through the new 3GPP access network, and initiate a PDN connection establishment request to New MME, which carries APN, user ID and request type, and the request type is ha...

Embodiment 2

[0075] Embodiment 2: Handover of UE from 3GPP access network to non-3GPP access network

[0076] The UE has established multiple PDN connections with multiple PDN networks through the 3GPP access network (MME identifier). That is, multiple default radio bearers are established between the UE and the Old S-GW, and a PMIP tunnel is established between the Old S-GW and the P-GW. At this time, the UE discovers a trusted non-3GPP access network (trusted non-3GPP access gateway identifier), and handover needs to occur, and the implementation steps are described as follows:

[0077] Step 501: UE initiates an attach request to a non-3GPP access network;

[0078] Step 502: The authentication process is completed between the UE and the non-3GPP access network;

[0079] Step 503: The UE needs to initiate multi-PDN connection reestablishment through the non-3GPP access network, and initiate a PDN connection reestablishment request to the trusted non-3GPP access gateway, and the request ...

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Abstract

The invention provides a realization method of multi-packet data network (PDN) connection, comprising the following steps: when multi PDN connection is reestablished, network equipment stores a PDN connection distinguishing identifier for distinguishing PDN connection into a home subscriber server (HSS); and when an access network is handed off, the network equipment obtains the corresponding PDN connection distinguishing identifier from the HSS to reestablish connection of all the PDN. The realization method and system of the invention can ensure that multi PDN connection can be still reestablished when user equipment undergoes cross access network handoff, and can realize accuracy of data routing.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method and system for establishing multi-packet data network connections. Background technique [0002] The 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) evolved packet system (EPS, Evolved Packet System evolved packet system) is evolved from the evolved UTRAN (E-UTRAN, Evolved Universal Terrestrial Radio Access Network Terrestrial Universal Radio Access Network) Incoming network), MME (Mobility Management Entity, mobile management unit), S-GW (Serving Gateway, service gateway), P-GW is also called PDN GW (Packet DataNetwork Gateway, data network gateway), HSS (Home Subscriber Server, belonging User server), 3GPP AAA (Authentication, Authorization and Accounting, authentication, authorization and accounting) server, PCRF (Policy and Charging Rules Function, policy and charging rule function) and other support nodes. [0003] MME...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/04H04W76/02
Inventor 毛玉欣施晓峰
Owner ZTE CORP
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