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Wideband code division multiple access (WCDMA) core network and WCDMA core network-based switching method

A core network, handover process technology, applied in wireless communication, electrical components, etc., can solve problems such as no proposal and circuitous routing

Active Publication Date: 2013-01-16
昆山创智汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0067] However, in the prior art, there is no corresponding implementation plan for how to support the separation of the identity and location of the terminal during the handover process of the WCDMA system and avoid circuitous routing.

Method used

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  • Wideband code division multiple access (WCDMA) core network and WCDMA core network-based switching method
  • Wideband code division multiple access (WCDMA) core network and WCDMA core network-based switching method
  • Wideband code division multiple access (WCDMA) core network and WCDMA core network-based switching method

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Experimental program
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Embodiment 1

[0228] Embodiment 1 and Embodiment 2 are aimed at the scenario where the GGSN does not change, the peer information of the terminal is maintained in the SGSN, and the former SGSN needs to transmit the peer information of the switched-out terminal to the new SGSN during the relocation process. If the peer information is maintained at the GGSN, the relocation process is the same as that of the prior art without any change.

[0229] The following mainly describes the improvements made on the original system to realize handover without a fixed anchor point, including related functions and processes.

[0230] In this paper, when a certain network element is described as the original side network element to handle the terminal handover, the terminal is called the cut-out terminal; when a certain network element is described as the target side network element to handle the terminal handover, the terminal is called the cut-in terminal . In this paper, the network element accessed by ...

Embodiment 2

[0243] The WCDMA core network architecture based on this embodiment may be any one of the above three architectures, and the GGSN remains unchanged during the relocation process. The SGSN stores peer information of the terminal. The former SGSN transmits the peer information of the terminal through a message such as a "relocation request message" sent to the new SGSN through the relocation preparation process.

[0244] Such as Figure 9 As shown, the joint hard handover of the PS domain and the relocation process of the terminal across the SGSN in this embodiment include:

[0245] Step 901: The source RNC decides to initiate a handover procedure, same as step 301;

[0246] Step 902: the source RNC sends a relocation request to the former SGSN, same as step 302;

[0247] Step 903: The former SGSN sends a forwarding relocation request message to the new SGSN, and the message carries the original parameter information and the peer information of the terminal maintained by the ...

Embodiment 3

[0253] The architecture of the WCDMA core network based on this embodiment is the above-mentioned architecture 1 and architecture 3. During the relocation process, the GGSN changes, and the RID of the registered terminal is updated from the SGSN to the ILR, and the peer information of the terminal is maintained and saved. Cut into side pass.

[0254] Such as Figure 10 As shown, the joint hard handover of the PS domain and the relocation process of the terminal across SGSN and GGSN in this embodiment include:

[0255] Steps 1001-1003: same as steps 301-303;

[0256] Step 1004: The new SGSN receives the relocation request message. If a new GGSN is selected, it interacts with the new GGSN to establish the terminal's PDP bearer and transmits the terminal's AID to the new GGSN. The new GGSN allocates a new RID for the terminal , storing the mapping information between the terminal AID and the new RID, and sending the new RID to the new SGSN as carried in the PDP bearer establish...

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Abstract

A handover method based on a Wideband Code Division Multiple Access (WCDMA) core network and a WCDMA core network are provided in the present invention. The method includes that: during a terminal handover process which involves Service Radio Network Subsystem (SRNS) relocation between Serving GPRS Support Nodes (SGSNs), if a new SGSN selects a new Gateway GPRS Support Node (GGSN), Packet Data Protocol (PDP) bearer between the new SGSN and the new GGSN are established for the terminal, and a terminal Access Identity (AID) is sent to the new GGSN; the new GGSN allocates a new Routing Identity (RID) for the terminal, and stores the mapping relationship between the new RID and the terminal AID; the new GGSN or the new SGSN sends an RID register request to an Identity and Location Register (ILR) that the terminal belongs to, the request carries the new RID, and the ILR that the terminal belongs to, updates the stored RID of the terminal; When the handover is completed, the bearer related with the terminal and between the ex-SGSN and the ex-GGSN is released, and the terminal connects with the external packet data network via the new SGSN and the new GGSN. The present invention can take fully advantage of the existing relocation process, has no impact on the consistency of the existing relocation process, and has better feasibility.

Description

technical field [0001] The invention relates to a WCDMA core network in the field of mobile communication and a switching method based on the WCDMA core network. Background technique [0002] The existing WCDMA system is currently an important system and method for realizing service access based on the wireless WCDMA technology. Its core network architecture is as follows Figure 1a shown. Including network elements such as Serving GPRS Node (SGSN), Gateway GPRS Node (GGSN) and Home User Subscription Register. In this paper, Home Location Register (HLR) in 2G and Home Subscriber Server (HSS) in 3G are collectively referred to as Home User Subscription Register , represented by HLR / HSS. [0003] SGSN is a basic component network element of the GPRS network, and is a new network element device introduced in the GSM network to provide GPRS services. Its main function is to forward the input / output IP packets for the MSs in the service area of ​​the SGSN. [0004] GGSN provi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/12
CPCH04W36/12H04W36/125
Inventor 王志海吴强符涛
Owner 昆山创智汇知识产权运营有限公司
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